115 Celtic Boy Names That Walk the Line Between Myth and Modern Cool (With Meanings & Origins)

There is a wildness in Celtic masculine names that no other European naming tradition quite captures. It is the wildness of a language family that spread from the Atlantic seaboard to the steppes of Anatolia before the Roman legions pushed it to the western edges of the world, a language family that survived in the rain-soaked islands and peninsulas where Rome’s reach grew thin and where the people who spoke Gaelic and Welsh and Breton and Cornish maintained a cultural tradition so specific and so complete that it produced the most complex mythological literature of medieval Europe while the rest of the continent was still assembling its narratives.

Celtic masculine names come from the oldest stratum of European naming tradition that is still in living use. Where Latin names carry the authority of a civilization that built roads and aqueducts, Celtic names carry the authority of a civilization that built something less visible and considerably more durable, a mythological understanding of the relationship between the human world and the otherworld that understands those two domains as separated by the thinnest possible membrane, where the hero who walks into the sea walks into another kingdom rather than simply drowning, where the salmon in the pool carries all the wisdom in the world, where the shape of a name can carry a whole cosmology.

The Celtic naming tradition draws from several distinct linguistic branches. The Goidelic branch, comprising Irish, Scottish Gaelic, and Manx, produced names of extraordinary phonetic complexity whose spellings are simultaneously the most misleading in the European tradition, nothing looks like it sounds, and the most internally logical, each sound governed by rules of extraordinary consistency. The Brythonic branch, comprising Welsh, Cornish, and Breton, produced names of different but equally distinctive beauty whose compound structure carries a different set of mythological and natural world associations. And the broader Continental Celtic tradition preserved in place names and inscriptions produced a third vocabulary of names whose meanings can sometimes be recovered and whose sounds carry the specific music of a language spoken by people who lived in the forests of Gaul and the hill forts of Britain before the Roman world arrived to change everything.

Whether you are drawn to the legendary authority of Cú Chulainn’s tradition, the bardic grace of the Welsh mythological cycle, the Arthurian romance that Celtic storytelling gave the world, or simply the specific phonetic beauty of names that have been shaped by Atlantic weather and the specific consonant shifts of the Celtic languages, this collection gives you 115 of the most powerful, most beautiful, and most completely compelling Celtic masculine names in the tradition. Popularity rankings are based on the most recent Social Security Administration (SSA) data.

Quick Note on Popularity: Names ranked above 1000 on the SSA database are considered truly rare and unique. Names closer to 1 are among the most popular in the United States today.

Irish Mythological Names

Cormac

• Origin: Irish Gaelic
• Meaning: Charioteer, son of the chariot
• Popularity: >1000

The name of Cormac Mac Airt, the legendary High King of Ireland who governed from Tara during what was remembered as the golden age of Irish civilization, who lost his eye and his throne by pronouncing an unjust judgment and regained both by pronouncing a just one, Cormac carrying the charioteer tradition in a name of extraordinary mythological authority that belongs to a boy whose life will be characterized by the quality of his judgments.

Fionn

• Origin: Irish Gaelic
• Meaning: Fair, white, bright
• Popularity: >1000

The leader of the Fianna, the legendary warrior band of Ireland, who gained all the wisdom in the world by accidentally tasting the Salmon of Knowledge while cooking it for his teacher, and whose love for the young Gráinne and her elopement with Diarmuid is the Irish tradition’s defining story of passion overriding every other loyalty, Fionn carrying the brightness and fairness tradition in a name of complete mythological authority.

Oisín

• Origin: Irish Gaelic
• Meaning: Little deer, fawn
• Popularity: >1000

The son of Fionn Mac Cumhaill and the deer goddess Sadhbh, the greatest poet of the Fianna who traveled to Tír na nÓg with Niamh of the Golden Hair and returned to find three hundred years had passed and everyone he knew was dust, Oisín carrying the fawn tradition in a name of extraordinary poetic and temporal depth whose bearer was simultaneously the greatest living warrior and the last living connection to a world that had already disappeared.

Cú Chulainn

• Origin: Irish Gaelic
• Meaning: Hound of Culann
• Popularity: >1000

The greatest hero of the Ulster Cycle whose birth name Sétanta was replaced when he killed the great hound of the smith Culann and offered to take its place as guardian until a new dog could be trained, Cú Chulainn carrying the hound tradition in a compound name whose origin story is simultaneously about the acceptance of consequences, the creation of identity through action, and the understanding that a name earned through a decisive moment is worth more than a name simply given.

Sétanta

• Origin: Irish Gaelic
• Meaning: Possibly from the ancient tribe name, wayward path
• Popularity: >1000

The birth name of Cú Chulainn before he became the hound’s replacement, Sétanta carries the pre-heroic tradition in a name that belongs to the boy before he became legendary, the original identity that was superseded by the name earned through the defining act, belonging to a boy whose early name carries the promise of what the defining moment will eventually produce.

Lugh

• Origin: Irish Gaelic
• Meaning: Shining, bright, the shining one
• Popularity: >1000

The god of light and craftsmanship who came to the court of the Tuatha Dé Danann and was refused entry until he had demonstrated mastery of every skill they possessed, who killed his grandfather Balor of the Evil Eye at the Battle of Mag Tuired, and whose harvest festival Lughnasadh is still celebrated at the start of August, Lugh carrying the shining tradition in a name of complete divine luminous authority.

Bran

• Origin: Irish/Welsh Gaelic
• Meaning: Raven
• Popularity: >1000

The name carried by both the Irish King Bran Mac Febail who sailed to the Land of Women across the western ocean and the Welsh King Bran the Blessed whose cauldron could restore the dead to life, the raven being one of the most sacred birds in Celtic tradition and whose name became synonymous with the mythological journey across the boundary between this world and the other.

Conall

• Origin: Irish Gaelic
• Meaning: Strong wolf, powerful hound
• Popularity: >1000

Conall Cearnach, the Ulster warrior who was Cú Chulainn’s foster brother and sworn companion and who avenged his death by killing every king in Connacht, carries the strong wolf or powerful hound tradition in a name of considerable warrior authority whose bearer’s defining quality was the absolute loyalty that expressed itself as absolute ferocity when that loyalty was violated.

Fergus

• Origin: Irish Gaelic
• Meaning: Man of strength, vigorous man
• Popularity: >1000

Fergus Mac Róich, the former king of Ulster who went into exile in Connacht rather than participate in the treacherous killing of the Sons of Uisneach, who was one of the greatest warriors in Irish mythology, and whose sword Caladbolg was said to be capable of cutting the tops off hills, Fergus carrying the masculine strength tradition in a name of considerable mythological and martial authority.

Diarmuid

• Origin: Irish Gaelic
• Meaning: Without enemy, free from envy
• Popularity: >1000

The most beautiful man in Ireland who had a love spot on his forehead that made any woman who saw it fall hopelessly in love with him, whose elopement with Gráinne on the eve of her marriage to Fionn and their years of pursuit across Ireland constitute one of the great love stories of Celtic mythology, Diarmuid carrying the without-enemy tradition in a name whose bearer was loved by everyone except the one person who mattered most.

Cian

• Origin: Irish Gaelic
• Meaning: Ancient, enduring, long-lasting
• Popularity: >1000

The father of Lugh who was killed by the sons of Tuireann and whose death required them to undergo the impossible tasks that eventually led to their own destruction, Cian carrying the ancient and enduring tradition in a name of extraordinary temporal depth that belongs to the most ancient stratum of Irish divine mythology.

Ronan

• Origin: Irish Gaelic
• Meaning: Little seal, seal-like
• Popularity: #720

The little seal name that carries the selkie tradition of the Irish and Scottish coastal mythology, where the seals were understood as beings who could shed their skins and take human form, Ronan belonging to the tradition of names that honor the boundary between the human world and the natural world and the beings who move between them.

Caolán

• Origin: Irish Gaelic
• Meaning: Slender warrior, slender and fair
• Popularity: >1000

Named for the slender or narrow quality in the Irish warrior tradition where a specific type of tall, lean warrior was distinguished from the broader, more heavily built fighter, Caolán carries the slender-warrior tradition in a name of considerable phonetic elegance that has been anglicized as Kelan or Keelan in the diaspora tradition.

Eoghan

• Origin: Irish Gaelic
• Meaning: Born of the yew tree, young warrior
• Popularity: >1000

Named for the yew tree in the Irish sacred botanical tradition, the yew being simultaneously the tree of death and immortality in the Celtic world and the tree from which the long bows of the warrior tradition were made, Eoghan carrying the yew-born tradition in a name of considerable Irish authority pronounced approximately Owen in the anglicized form.

Tadhg

• Origin: Irish Gaelic
• Meaning: Poet, philosopher, storyteller
• Popularity: >1000

Named for the poet-philosopher in the Irish bardic tradition where the function of the storyteller was simultaneously creative, political, and sacred, Tadhg pronounced approximately Tige or Teig carries the poet-philosopher tradition in a name that belongs to the most powerful non-warrior role in the Gaelic Irish social system.

Welsh and Arthurian Names

Emrys

• Origin: Welsh
• Meaning: Immortal, divine, undying
• Popularity: >1000

The name given to the young Merlin when he revealed to Vortigern’s court that the foundation of the fortress kept collapsing because of the two dragons fighting in the pool beneath it, Emrys carrying the immortal tradition in a name that belongs to the prophetic dimension of the Arthurian mythological tradition, the boy who sees what no one else can see and whose sight changes the course of kingdoms.

Taliesin

• Origin: Welsh
• Meaning: Shining brow, radiant forehead
• Popularity: >1000

The greatest of the Welsh bards who was said to have drunk three drops from the cauldron of Ceridwen and gained all the wisdom and poetry in the world, who could transform himself into any form and who eventually transformed himself into a grain of wheat, was eaten by Ceridwen, and was reborn as the most gifted poet in history, Taliesin carrying the shining brow tradition in a name that belongs to the Welsh understanding of poetic inspiration as a cosmic gift given through supernatural transformation.

Caradoc

• Origin: Welsh/Brythonic
• Meaning: Beloved, amiable
• Popularity: >1000

The British king who led the resistance against the Roman invasion and whose capture and subsequent speech to Emperor Claudius in Rome was so eloquent that Claudius granted him his freedom, Caradoc carrying the beloved tradition in a name of considerable Romano-British historical authority and extraordinary personal dignity.

Brychan

• Origin: Welsh
• Meaning: Speckled, freckled
• Popularity: >1000

The legendary Welsh king who was said to have had twenty-four or more children all of whom became saints, establishing the most comprehensive family of holiness in the Welsh hagiographic tradition, Brychan carrying the speckled tradition in a name whose bearer’s legacy was measured in the number of holy people his family produced rather than in the number of battles he won.

Gwydion

• Origin: Welsh
• Meaning: Born of trees, god-born
• Popularity: >1000

The great magician of the Fourth Branch of the Mabinogi who created a woman out of flowers and who tricked the Lord of the Underworld out of his pigs in a scheme so elaborate it required three disguises and three days, Gwydion carrying the divine-born or tree-born tradition in a name of extraordinary Welsh mythological depth.

Llywelyn

• Origin: Welsh
• Meaning: Leader’s image, lion-like
• Popularity: >1000

The name of two great Princes of Wales, Llywelyn the Great and Llywelyn the Last, the last native Prince of Wales whose death in 1282 ended the independent Welsh princely tradition, Llywelyn carrying the lion-like or leader’s image tradition in a name of extraordinary Welsh national and historical authority.

Geraint

• Origin: Welsh
• Meaning: Old man, elder
• Popularity: >1000

The Arthurian knight whose story of love, jealousy, and eventual reconciliation with his wife Enid is one of the Welsh Arthurian tradition’s most complete explorations of what the relationship between courage and trust actually requires, Geraint carrying the elder tradition in a name of considerable Welsh literary authority.

Peredur

• Origin: Welsh
• Meaning: Steel spear, hard spear
• Popularity: >1000

The Welsh precursor to Percival whose naive arrival at Arthur’s court and eventual quest for the Grail constitutes the Welsh Arthurian tradition’s most extended exploration of innocence as a form of spiritual perception, Peredur carrying the steel-spear tradition in a name that belongs to someone who achieves through directness what the more sophisticated knights achieve through cunning.

Owain

• Origin: Welsh
• Meaning: Young warrior, well-born
• Popularity: >1000

The Arthurian knight whose story involves a magic spring, a black knight, and a lion whose life he saves and who then accompanies him everywhere as a symbol of the grateful natural world recognizing and serving genuine nobility, Owain carrying the young-warrior tradition in a name of considerable Welsh literary and historical authority.

Macsen

• Origin: Welsh
• Meaning: Son of the great one, from Maximus
• Popularity: >1000

The Welsh form of the Roman emperor Magnus Maximus who is preserved in Welsh tradition as Macsen Wledig and whose dream of a beautiful woman in a golden city led him to discover Britain, Macsen carrying the Roman imperial tradition through the specific lens of the Welsh mythological understanding of Rome as a world connected to rather than separate from the Celtic one.

Cadoc

• Origin: Welsh
• Meaning: Battle, warlike
• Popularity: >1000

The Welsh saint whose monastery at Llancarfan was one of the great centers of early Welsh Christianity and learning, Cadoc carrying the battle tradition in a name whose bearer’s fighting was conducted with manuscripts and prayer rather than with swords, belonging to the specifically Celtic Christian tradition where the monastic life was understood as a different kind of warrior calling.

Manawydan

• Origin: Welsh
• Meaning: From Manawyddan, of the sea
• Popularity: >1000

The Welsh god of the sea whose Third Branch in the Mabinogi is one of the most psychologically subtle stories in medieval Welsh literature, Manawydan carrying the maritime tradition in a name of extraordinary mythological depth whose bearer was distinguished more by patience and practical wisdom than by the more obviously spectacular qualities of his mythological peers.

Pryderi

• Origin: Welsh
• Meaning: Care, trouble, anxiety
• Popularity: >1000

The central figure of all four Branches of the Mabinogi whose name means anxiety and whose life from birth to death was characterized by a series of losses and recoveries that constitute the Welsh mythological tradition’s most sustained meditation on the relationship between fate and personal agency, Pryderi carrying the care tradition in a name of extraordinary narrative authority.

Arawn

• Origin: Welsh
• Meaning: Greatly feared, perhaps of silver
• Popularity: >1000

The King of Annwn, the Welsh Otherworld, who exchanged places with the hero Pwyll for a year and whose friendship with Pwyll established the most important alliance in Welsh mythology between the mortal and immortal worlds, Arawn carrying the feared tradition in a name of complete otherworldly authority.

Caswallawn

• Origin: Welsh/Brythonic
• Meaning: Lover of war, battle-lover
• Popularity: >1000

The British king who appears in the Mabinogi and who represents the specifically Brythonic warrior tradition, Caswallawn carrying the war-lover tradition in a name of considerable linguistic antiquity that preserves the early Brythonic phonetic system in a form rarely encountered in contemporary naming.

Scottish Gaelic Names

Alasdair

• Origin: Scottish Gaelic
• Meaning: Defender of men, from Alexander
• Popularity: >1000

The Scottish Gaelic form of Alexander that carries the Greek defender tradition in the specifically Scottish phonetic system, Alasdair belonging to the Scottish Highland naming culture that transformed every classical and biblical name it adopted into something that sounds as though it grew from the Scottish soil rather than arriving from Greece or Rome.

Callum

• Origin: Scottish Gaelic
• Meaning: Dove, from Columba
• Popularity: #609

The Scottish form of Columba, the dove, that carries the tradition of the great Irish monk who founded the monastery of Iona and evangelized Scotland, Callum belonging to the specifically Scottish devotional tradition of names honoring the saint whose island monastery was simultaneously the most important center of early Scottish Christianity and the most beautiful expression of the Celtic church’s understanding that holiness and natural beauty occupied the same sacred space.

Ruaraidh

• Origin: Scottish Gaelic
• Meaning: Red king, russet warrior
• Popularity: >1000

The Scottish Gaelic form of the Norse Rory through the Gaelic tradition that carries the red king or russet warrior tradition in a name whose phonetic complexity, pronounced approximately Roo-ree, is characteristic of the Scottish Gaelic system where the relationship between spelling and sound is governed by rules of considerable internal consistency and complete external surprise.

Tormod

• Origin: Scottish Gaelic
• Meaning: Thunder mind, from Norman
• Popularity: >1000

The Scottish Gaelic form of Norman that carries the thunder-mind tradition through the Gaelic phonetic transformation of a Norse place-name, Tormod belonging to the Scottish island and Highland tradition of names that arrived from one linguistic tradition and were so completely transformed by the Gaelic phonetic system that their origin became secondary to their achieved Scottish identity.

Fearchar

• Origin: Scottish Gaelic
• Meaning: Dear man, the dear one
• Popularity: >1000

Named for the dear man in the Scottish Gaelic affectionate tradition, Fearchar belongs to the Scottish Highland naming culture as a name of considerable warmth whose phonetic construction is entirely characteristic of the Gaelic sound system, pronounced approximately Farr-akhar with the guttural CH of the Scottish tradition.

Teàrlach

• Origin: Scottish Gaelic
• Meaning: Manly, from Charles
• Popularity: >1000

The Scottish Gaelic form of Charles that carries the Germanic free-man tradition through the specific Scottish phonetic transformation system, Teàrlach pronounced approximately Char-lach belonging to the tradition that associated this name with Bonnie Prince Charlie, the Young Pretender whose failed Jacobite rising in 1745 was the last serious attempt to restore the Stuart dynasty.

Uilleam

• Origin: Scottish Gaelic
• Meaning: Resolute protector, from William
• Popularity: >1000

The Scottish Gaelic form of William that carries the Germanic resolute-protector tradition through the Gaelic phonetic system, Uilleam pronounced approximately Ull-em belonging to the tradition of Scottish Highland naming that created from every European given name something that sounded as though it had always been Gaelic.

Seumas

• Origin: Scottish Gaelic
• Meaning: Supplanter, from James
• Popularity: >1000

The Scottish Gaelic form of James that carries the Hebrew supplanter tradition through the Gaelic phonetic transformation, Seumas pronounced approximately Shay-mas belonging to the tradition most deeply associated with the Stuart monarchs, James being the name of multiple Scottish and British kings and the name inseparable from the Jacobite cause.

Coinneach

• Origin: Scottish Gaelic
• Meaning: Handsome, fair, bright
• Popularity: >1000

Named for the handsome and bright tradition in Scottish Gaelic, Coinneach pronounced approximately Ko-nyakh is the name of one of Scotland’s most beloved local saints, Kenneth of Aghaboe, and carries the brightness tradition in a form of considerable Scottish phonetic complexity.

Lachlann

• Origin: Scottish Gaelic
• Meaning: Land of the lochs, from Norway
• Popularity: >1000

Named for the land of the lochs or for Norway in the Scottish Gaelic tradition where the Norse settlers were referred to as people from the land of lochs, Lachlann carries the Norwegian-loch heritage in a name that connects the Scottish Highland tradition to the Norse settlement of the Western Isles.

Dòmhnall

• Origin: Scottish Gaelic
• Meaning: World ruler, from Donald
• Popularity: >1000

The Scottish Gaelic form of Donald that carries the Old Slavic world-ruler tradition through the specifically Scottish Gaelic orthographic system, Dòmhnall pronounced approximately Doh-null belonging to the tradition of Scottish Highland clan naming where Donald was the most beloved of all given names and the MacDonalds were the most powerful of all clans.

Iomhar

• Origin: Scottish Gaelic
• Meaning: Bow warrior, from Ivar
• Popularity: >1000

The Scottish Gaelic form of the Norse Ivar that carries the bow-warrior tradition in a name of considerable phonetic transformation, Iomhar pronounced approximately Ee-var belonging to the Scottish-Norse heritage of the Western Isles where the two traditions were so thoroughly intermingled that names moved freely between them.

Nature and Landscape Names

Ardal

• Origin: Irish Gaelic
• Meaning: High valor, bear valor
• Popularity: >1000

Named for the high valor in the Irish compound naming tradition that combines ard, high, with gal, valor or battle fury, Ardal carries the elevated-courage tradition in a name of considerable warmth that belongs to the Irish tradition of names that understood valor as a quality that comes from elevation rather than simply from martial training.

Colm

• Origin: Irish Gaelic
• Meaning: Dove
• Popularity: >1000

The Irish form of Columba that carries the dove tradition in a name of complete compressed Irish warmth, Colm belonging to the tradition of the great saint Columba of Iona and the broader Irish Christian tradition where the dove was simultaneously the symbol of the Holy Spirit and the symbol of the peaceful character that was considered the most complete expression of Christian virtue.

Calder

• Origin: Scottish Gaelic
• Meaning: Hard water, rough stream
• Popularity: >1000

Named for the hard or rough stream in the Scottish Gaelic hydrological naming tradition, Calder carries the powerful flowing water tradition in a name of considerable topographical warmth that belongs to the characteristically Scottish understanding of watercourses as fundamental features of the landscape worth preserving in personal names.

Glen

• Origin: Scottish Gaelic
• Meaning: Valley, narrow valley
• Popularity: >1000

The Scottish Gaelic word for the narrow mountain valley that is one of the most characteristic features of the Highland landscape, Glen carries the valley tradition in a name of complete landscape simplicity that has crossed from its original Gaelic usage into the general English-speaking naming tradition.

Craig

• Origin: Scottish Gaelic
• Meaning: Rock, crag
• Popularity: >1000

The Scottish Gaelic word for the rocky crag that is one of the most characteristic features of the Highland and Border landscapes, Craig carries the rock tradition in a name of complete geological authority that has traveled from its Gaelic origin into one of the most familiar masculine names in the English-speaking world.

Brendan

• Origin: Irish Gaelic
• Meaning: Prince, from Bréanainn
• Popularity: #477

The name of the Irish monk who sailed across the Atlantic in a currach boat looking for the Land of Promise and whose Navigation is one of the most extraordinary voyage narratives in medieval literature, Brendan carrying the prince tradition in a name that belongs to someone who understands that the most important journeys are the ones whose destination cannot be found on any map.

Caolan

• Origin: Irish Gaelic
• Meaning: Slender, narrow, pure
• Popularity: >1000

Named for the slender and pure in the Irish descriptive tradition, Caolan carries both the physical and the moral dimensions of slenderness in a name of considerable phonetic elegance that belongs to the Irish tradition of names that find in the specifically physical description a route to the moral quality it suggests.

Lorcan

• Origin: Irish Gaelic
• Meaning: Little fierce one, silent warrior
• Popularity: >1000

Named for the fierce silent one in the Irish warrior diminutive tradition, Lorcan was the birth name of St. Lawrence O’Toole, the Archbishop of Dublin who negotiated between the Irish and the Normans during the invasion, carrying the fierce-silence tradition in a name of considerable Irish religious and political authority.

Saoirse

• Origin: Irish Gaelic
• Meaning: Freedom, liberty
• Popularity: >1000

While primarily used as a feminine name, Saoirse has been used as a masculine name in certain Irish contexts and carries the most politically and philosophically charged concept in the Irish tradition, freedom being the quality for which generations of Irish people fought and which their names carried as permanent declarations of what they valued most.

Dara

• Origin: Irish Gaelic
• Meaning: Oak tree, fruitful
• Popularity: >1000

Named for the oak tree in the Irish sacred botanical tradition, the oak being simultaneously the most sacred tree of the druids and the tree associated with endurance, Dara carries the oak tradition in a name of warm, accessible Irish simplicity that works comfortably in English-speaking contexts.

Cormack

• Origin: Irish Gaelic
• Meaning: Charioteer, son of the chariot
• Popularity: >1000

The anglicized form of Cormac that carries the charioteer tradition in a form of slightly greater accessibility to English speakers, Cormack belonging to the tradition of Irish names that crossed into English-speaking communities without losing their essential Irish character.

Killian

• Origin: Irish Gaelic
• Meaning: Little church, bright-headed
• Popularity: #343

Named for the little church in the Irish diminutive tradition, Killian was the name of the Irish missionary who evangelized parts of Germany and whose feast day is still celebrated in Würzburg, Killian carrying the church tradition in a name of contemporary warmth that has crossed from its Irish ecclesiastical origins into the broader English-speaking naming culture.

Warrior and Strength Names

Cuchulain

• Origin: Irish Gaelic
• Meaning: Hound of Culann
• Popularity: >1000

The anglicized form of Cú Chulainn that carries the legendary Ulster hero’s name in a more accessible form, Cuchulain belonging to the tradition of Irish mythological names adopted by families who want the full mythological authority without the most extreme phonetic complexity of the original Gaelic form.

Drustan

• Origin: Brythonic/Celtic
• Meaning: Tumult, noise, din
• Popularity: >1000

The Brythonic original from which the name Tristan derived, Drustan carries the tumult and din tradition in the most ancient available form of one of the great names in the Arthurian and romance tradition, belonging to the Celtic warrior culture that understood the noise of battle as a quality worth preserving in a family name.

Bevan

• Origin: Welsh
• Meaning: Son of Evan, son of young warrior
• Popularity: >1000

The Welsh patronymic form that carries the young warrior tradition in a name of warm, accessible Welsh phonetic character, Bevan belonging to the Welsh naming tradition of patronymics used as given names and carrying the young-warrior compound in a form of considerable contemporary accessibility.

Tristan

• Origin: Celtic/Welsh
• Meaning: Tumult, din, noise of battle
• Popularity: #193

The romance hero whose doomed love for Isolde is one of the defining narratives of medieval European literature, Tristan carrying the battle-noise tradition in a name that the troubadour tradition transformed from a warrior designation into the most complete expression of romantic love as a force that overrides every other loyalty, belonging to a boy whose name announces the specific quality of passionate intensity.

Breccan

• Origin: Irish Gaelic
• Meaning: Speckled, freckled
• Popularity: >1000

Named for the speckled or freckled in the Irish descriptive tradition, Breccan carries the color-pattern tradition in a name of considerable phonetic warmth whose bearer is someone distinguished by the specific character that shows up in the texture of what is visible rather than in its simple color.

Eamon

• Origin: Irish Gaelic
• Meaning: Rich guardian, wealthy protector
• Popularity: >1000

The Irish form of Edmund that carries the wealthy guardian tradition in a specifically Irish phonetic form, Eamon pronounced approximately Ay-mun belonging to the Irish tradition of Anglo-Saxon names transformed by the Irish phonetic system and to the national tradition through Éamon de Valera whose long political career shaped the Irish state.

Ciarán

• Origin: Irish Gaelic
• Meaning: Dark one, little dark one
• Popularity: >1000

Named for the dark one in the Irish color-description tradition, Ciarán was the name of two of the twelve apostles of Ireland including the founder of the monastery of Clonmacnoise, carrying the dark tradition in a name whose bearer’s darkness was understood as the darkness of the monk’s robe rather than any moral quality.

Finnbar

• Origin: Irish Gaelic
• Meaning: Fair head, white peak
• Popularity: >1000

The compound of fionn, fair or bright, and barr, head or peak, Finnbar carries the bright-summit tradition in a name that belongs to the patron saint of Cork whose monastery at Gougane Barra was one of the most beautiful early Christian sites in Munster.

Ailill

• Origin: Irish Gaelic
• Meaning: Elf, spirit
• Popularity: >1000

The name of the King of Connacht who married Queen Méabh of Connacht and whose dispute with his wife about who had the greater wealth led directly to the Táin Bó Cúailnge, the great cattle raid that is the central narrative of the Ulster Cycle, Ailill carrying the spirit-elf tradition in a name that belongs to someone whose most consequential acts were performed in response to a domestic argument that became a civilization’s defining mythological conflict.

Donagh

• Origin: Irish Gaelic
• Meaning: Brown warrior, dark fighter
• Popularity: >1000

Named for the brown warrior in the Irish descriptive compound tradition, Donagh carries the dark-fighter tradition in a name of considerable Irish warmth that was particularly popular in the Munster tradition and whose bearer is someone of a specifically serious and determined quality of commitment to whatever they are engaged in.

Ruadhán

• Origin: Irish Gaelic
• Meaning: Red-haired, little red one
• Popularity: >1000

Named for the red-haired in the Irish color-description diminutive tradition, Ruadhán carries the red tradition in a form of considerable phonetic warmth and was the name of one of the twelve apostles of Ireland whose fasting against a king who had violated the laws of sanctuary was one of the most dramatic exercises of spiritual authority in the early Irish church.

Séamus

• Origin: Irish Gaelic
• Meaning: Supplanter, from James
• Popularity: >1000

The Irish Gaelic form of James that carries the Hebrew supplanter tradition through the specifically Irish phonetic system, Séamus pronounced approximately Shay-mus belonging to the Irish Catholic tradition of James as one of the apostolic names and to the literary tradition through Séamus Heaney whose Nobel Prize-winning poetry made this form of the name synonymous with the highest achievement in Irish literary culture.

Royal and Noble Names

Conchobar

• Origin: Irish Gaelic
• Meaning: Lover of hounds, hound-helper
• Popularity: >1000

The King of Ulster in the Ulster Cycle whose court at Emain Macha was the setting for the greatest Irish heroic narratives and whose tragic love for Deirdre ended in her death and the exile of the Sons of Uisneach, Conchobar carrying the hound-lover tradition in a name of extraordinary Irish mythological authority pronounced approximately Ko-nuh-khor.

Eithne

• Origin: Irish Gaelic
• Meaning: Kernel, essence, the essential one
• Popularity: >1000

While primarily feminine, Eithne has occasionally been used in masculine contexts in Irish tradition, carrying the kernel or essence tradition that understands the named person as the concentrated essential quality of their family or people.

Niall

• Origin: Irish Gaelic
• Meaning: Champion, cloud, passionate
• Popularity: >1000

Named for the champion in the Irish warrior tradition, Niall of the Nine Hostages was the legendary High King from whom the Uí Néill dynasty claimed descent and whose exploits across Ireland and Britain established the template for Irish High Kingship, Niall carrying the champion tradition in a name of extraordinary dynastic authority.

Ailbe

• Origin: Irish Gaelic
• Meaning: White, bright
• Popularity: >1000

Named for the white or bright in the Irish color tradition, Ailbe was the patron saint of Munster whose cult predated Patrick’s arrival and who represents the oldest stratum of Irish Christian naming, carrying the brightness tradition in a name of considerable antiquity and phonetic elegance.

Énda

• Origin: Irish Gaelic
• Meaning: Bird-like, of birds
• Popularity: >1000

Named for the bird in the Irish avian naming tradition, Énda was the founder of the monastery of Aran Mór whose community became the training ground for the greatest generation of Irish monks, Colmcille and Ciarán of Clonmacnoise among them, carrying the bird tradition in a name that belongs to someone who understands freedom and height as the defining qualities of the spiritual life.

Uisneach

• Origin: Irish Gaelic
• Meaning: From Uisneach, the sacred center
• Popularity: >1000

Named for the sacred hill at the center of Ireland where the five provinces met and where the Bealtaine fires were lit, Uisneach carries the geographical and cosmological tradition of the Celtic understanding of the center as the most sacred of all locations, the point where the entire world converges.

Breandán

• Origin: Irish Gaelic
• Meaning: Prince, from Bréanainn
• Popularity: >1000

The Irish form of Brendan that preserves the full Irish orthographic tradition including the accent, Breandán belonging to the navigator saint’s tradition in a form of complete Irish linguistic authority.

Connell

• Origin: Irish Gaelic
• Meaning: Strong wolf, powerful companion
• Popularity: >1000

The anglicized form of Conall that carries the strong wolf tradition in a form of greater accessibility, Connell belonging to the Irish tradition and to the national memory through Daniel O’Connell the Liberator whose campaign for Catholic emancipation was the most successful Irish political movement of the 19th century.

Tiernan

• Origin: Irish Gaelic
• Meaning: Little lord, noble one
• Popularity: >1000

Named for the little lord in the Irish noble diminutive tradition, Tiernan carries the aristocratic designation in its most warmly accessible form, belonging to the Irish tradition of names that use the diminutive suffix to create something simultaneously smaller in form and larger in affectionate weight than the formal version.

Rónán

• Origin: Irish Gaelic
• Meaning: Little seal
• Popularity: >1000

The full accented form of Ronan that preserves the Irish orthographic tradition, Rónán carrying the little seal tradition in a form of complete Irish linguistic authority that belongs to both the selkie mythology of the western seaboard and the historical tradition of the king of Leinster whose tragic conflict with his son became one of the most harrowing narratives in early Irish literature.

Short and Modern Celtic Names

Finn

• Origin: Irish Gaelic
• Meaning: Fair, bright, white
• Popularity: #172

The compressed anglicized form of Fionn that carries the legendary leader’s brightness tradition in a name of warm, contemporary accessibility, Finn belonging to a generation of parents who want the full mythological authority of the Fenian tradition in a form short enough to wear as easily as a well-fitted jacket.

Cian

• Origin: Irish Gaelic
• Meaning: Ancient, long-lasting
• Popularity: >1000

The ancient one in its most direct Irish form, Cian carries the temporal depth tradition in four letters of complete Irish authority, belonging to a boy whose name announces before anything else that he carries something considerably older than his current age.

Bran

• Origin: Irish/Welsh
• Meaning: Raven
• Popularity: >1000

The raven in its most direct Celtic form that carries the mythological authority of both the Irish and Welsh raven traditions in a single syllable of complete avian power, Bran belonging to a boy whose name announces the intelligence, the adaptability, and the specific connection to the boundary between the mortal and immortal worlds that the raven represented throughout the Celtic tradition.

Oran

• Origin: Irish/Scottish Gaelic
• Meaning: Little pale green one, song
• Popularity: >1000

Named for the pale green or alternatively for the song in the Irish and Scottish Gaelic traditions, Oran was the companion of Columba who was buried alive on Iona so that the monastery’s foundation would be secure, carrying the color-song tradition in a name of considerable warmth and martyrological depth.

Cael

• Origin: Irish Gaelic
• Meaning: Slender, narrow
• Popularity: >1000

Named for the slender quality in the Irish warrior tradition, Cael was one of the Fianna whose love for the woman Créide and his death in battle led to a poem of extraordinary grief that is considered one of the finest examples of early Irish nature poetry, carrying the slender tradition in a name whose bearer’s story demonstrates that the most beautiful natural descriptions often emerge from the experience of loss.

Lir

• Origin: Irish Gaelic
• Meaning: Sea, the sea deity
• Popularity: >1000

The Irish sea god whose children were transformed into swans by their jealous stepmother and who spent nine hundred years on the waters of Ireland until the coming of Christianity released them, Lir carrying the sea-divinity tradition in a name of extraordinary mythological warmth whose bearer’s defining relationship is to the water that surrounds everything.

Mac

• Origin: Irish/Scottish Gaelic
• Meaning: Son of
• Popularity: >1000

The most fundamental element of Celtic patronymic naming used occasionally as a standalone given name, Mac carries the son-of tradition in its most compressed form, belonging to the naming culture that understood ancestry as the most important piece of information about any person.

Art

• Origin: Irish Gaelic
• Meaning: Bear, noble
• Popularity: >1000

The Irish word for bear and noble that was used as a given name with the same frequency and for the same reasons that Arthurian came to mean kingly, Art carries the bear tradition in a name of complete Irish simplicity that belongs to Art Mac Murchú and to the High King Art Mac Conn and to the broader tradition of the bear as the supreme symbol of nobility and natural authority.

Bres

• Origin: Irish Gaelic
• Meaning: Beauty, handsome
• Popularity: >1000

Named for the beautiful in the Irish aesthetic naming tradition, Bres was the High King of the Tuatha Dé Danann who was deposed for his lack of hospitality, demonstrating the Irish mythological understanding that beauty without generosity was not genuine beauty at all.

Neas

• Origin: Irish Gaelic
• Meaning: Warrior, champion
• Popularity: >1000

Named for the warrior or champion in the Irish warrior tradition, Neas was the mother of Conchobar Mac Nessa whose name means son of Nessa, Neas carrying the warrior tradition in a form of considerable Irish phonetic authority.

Rare and Ancient Names

Vercingetorix

• Origin: Gaulish Celtic
• Meaning: Great king of warriors, king over warriors
• Popularity: >1000

The Gaulish chieftain who led the most serious Celtic resistance against Julius Caesar’s conquest of Gaul and whose surrender at Alesia in 52 BCE marked the effective end of Celtic political independence in what is now France, Vercingetorix carrying the warrior-king compound tradition in a name of extraordinary length and extraordinary historical weight.

Ambiorix

• Origin: Gaulish Celtic
• Meaning: King of the surrounding territory, lord of the encircled land
• Popularity: >1000

The chieftain of the Eburones tribe who destroyed an entire Roman legion through a combination of deception and ambush and who was never captured by Caesar despite years of pursuit, Ambiorix carrying the encircled-king tradition in a name of considerable Gaulish Celtic authority.

Dumnorix

• Origin: Gaulish Celtic
• Meaning: King of the world, world-king
• Popularity: >1000

The Aeduan nobleman who was one of the most powerful men in Gaul before Caesar and whose execution when he tried to escape from Caesar’s custody was the most politically consequential killing in the Gallic Wars after Vercingetorix’s capture, Dumnorix carrying the world-king tradition in a name of extraordinary Continental Celtic authority.

Togodumnus

• Origin: Brythonic Celtic
• Meaning: Lord of the deep valley
• Popularity: >1000

The British king who fought against Claudius’s invasion of Britain in 43 CE and whose brother Caratacus continued the resistance after his death, Togodumnus carrying the deep-valley-lord tradition in a name of considerable British historical depth.

Prasutagus

• Origin: Brythonic Celtic
• Meaning: Wise, judicious
• Popularity: >1000

The king of the Iceni whose death and the subsequent Roman mistreatment of his widow Boudicca and daughters led to the most serious British revolt against Roman rule, Prasutagus carrying the wise-judgment tradition in a name of considerable British historical authority.

Adminius

• Origin: Brythonic Celtic
• Meaning: Lord of the territory, the magnanimous
• Popularity: >1000

The British prince who fled to Rome and whose appeal to Caligula was used as the pretext for a farcical mock-invasion of Britain, Adminius carrying the magnanimous-lord tradition in a name of considerable historical irony.

Cassivellaunus

• Origin: Brythonic Celtic
• Meaning: Battle-chief, war lord
• Popularity: >1000

The British chief who coordinated the resistance against Caesar’s second expedition to Britain in 54 BCE and whose use of chariot warfare and guerrilla tactics made him the most difficult opponent Caesar encountered, Cassivellaunus carrying the battle-chief tradition in a name of considerable linguistic antiquity.

Manannán

• Origin: Irish Gaelic
• Meaning: Son of the sea, sea-born
• Popularity: >1000

The Irish sea god and ruler of the Land of the Young who drove across the waves in a chariot and whose cloak of mists could conceal entire islands from those not meant to find them, Manannán carrying the sea-born tradition in a name of extraordinary Irish maritime mythological authority.

Núadu

• Origin: Irish Gaelic
• Meaning: Acquiring, getting, gaining
• Popularity: >1000

The King of the Tuatha Dé Danann who lost his arm in battle and was made a silver replacement by the divine craftsman, who had to abdicate because a king with a physical imperfection could not rule in the Irish tradition, and who eventually had his original arm restored and his kingship returned, Núadu carrying the acquiring tradition in a name whose bearer’s story is the most complete available exploration of the relationship between physical wholeness and sovereignty.

Donn

• Origin: Irish Gaelic
• Meaning: Dark, brown, lord of the dead
• Popularity: >1000

The Irish god of the dead whose house was a rock off the southwest coast of Ireland where the souls of the dead gathered before moving on, Donn carrying the dark-lord tradition in a name that belongs to the Irish understanding of death not as a catastrophe but as a journey to a specific geographical location presided over by a specific divine being.

Elcmar

• Origin: Irish Gaelic
• Meaning: The envious, the possessive
• Popularity: >1000

The foster father of Aengus Óg whose displacement by the god of love is one of the Irish mythological tradition’s most complete explorations of the relationship between legitimate possession and genuine belonging, Elcmar carrying the possessive tradition in a name that belongs to someone whose relationship to what they value is characterized by holding rather than by giving.

Mog Ruith

• Origin: Irish Gaelic
• Meaning: Slave of the wheel, devotee of the sun
• Popularity: >1000

The blind druid of Munster whose magical powers were the most terrifying in the Irish mythological tradition and whose origins were traced to a student of Simon Magus, Mog Ruith carrying the sun-wheel devotion tradition in a name of extraordinary druidic and mythological authority.

Fachtna

• Origin: Irish Gaelic
• Meaning: Hostile, malicious, the malevolent one
• Popularity: >1000

Named for the hostile quality in the Irish warrior naming tradition where apparently negative qualities were understood as warrior epithets celebrating ferocity, Fachtna was the father of Conchobar Mac Nessa and carries the name of the specific quality that a warrior’s opponents would most completely dread encountering.

Tigernach

• Origin: Irish Gaelic
• Meaning: Lord-like, kingly
• Popularity: >1000

Named for the lord-like or kingly quality in the Irish noble naming tradition, Tigernach was the name of an important early Irish annalist whose chronicle preserved the most complete account of early Irish history available, carrying the kingly tradition in a name whose most important bearer was a scholar rather than a warrior.

Cellach

• Origin: Irish Gaelic
• Meaning: Bright-headed, strife
• Popularity: >1000

Named for the bright-headed or alternatively for strife in the Irish naming tradition, Cellach was the name of multiple early Irish kings and saints whose names carry the characteristic Irish ambiguity between a physical description and a quality of character that might look negative in one context and admirable in another.

Frequently Asked Questions

Q: Why are Celtic names so difficult to pronounce from their spelling?

A: The Celtic languages, particularly the Goidelic branch comprising Irish, Scottish Gaelic, and Manx, follow phonetic rules that are internally consistent but dramatically different from the English phonetic system. Irish spelling is based on the lenition and eclipsis systems of the Gaelic languages where the initial sound of a word changes depending on what precedes it and where certain letter combinations produce sounds that have no direct English equivalent. The combination MH, for example, produces a W sound in Irish. BH produces a V or W sound. GH is often silent or produces a very soft guttural. Once these rules are learned, Irish spelling becomes entirely logical, but from an English-reading perspective the relationship between the written and spoken forms appears arbitrary. The best approach is to listen to native speakers of Irish or Scottish Gaelic pronouncing the names you are considering.

Q: What is the difference between Irish, Scottish Gaelic, and Welsh Celtic names?

A: Irish and Scottish Gaelic are both Goidelic languages, meaning they share a common ancestor and many naming conventions, though they diverged significantly after the Irish settlement of Scotland in the early medieval period. Irish names tend to have a characteristic softness in their consonant mutations, while Scottish Gaelic names often have a slightly harder quality. Welsh is a Brythonic language, more closely related to Cornish and Breton than to Irish or Scottish Gaelic, and Welsh names follow completely different phonetic conventions. The double L of Welsh names, as in Llywelyn and Llew, represents a sound that has no equivalent in any other European language. Celtic names from the Continental tradition, the Gaulish names like Vercingetorix and Ambiorix, follow yet another phonetic system that scholars have reconstructed from inscriptions.

Q: Which Celtic boy names work best in English-speaking contexts?

A: Names like Finn, Cian, Ronan, Brendan, Killian, Tristan, Callum, Craig, and Glen have been fully naturalized into English-speaking contexts while retaining their Celtic character. Names like Cormac, Lorcan, Tadhg, and Diarmuid work well in communities familiar with Irish names while requiring some active carrying in broader contexts. The fully Gaelic forms like Fionn, Cú Chulainn, Conchobar, and Tigernach carry their mythological authority most completely but require the most active management in anglophone environments, which many families find a worthwhile trade.

Q: Are Arthurian names Celtic or medieval French?

A: The Arthurian tradition is fundamentally Celtic in its origins but was extensively developed and transformed by medieval French romance writers. Names like Tristan, Percival, and Lancelot arrived in their familiar forms through the French romance tradition, but their roots are in the earlier Welsh and Brythonic Celtic traditions. Tristan derives from the Brythonic Drustan. Percival is the French rendering of the Welsh Peredur. Lancelot has no certain Celtic etymology. The most authentically Celtic Arthurian names are the Welsh ones, Owain, Geraint, Peredur, and Caradoc, which appear in the Welsh Arthurian tradition before the French romances transformed and elaborated the Arthurian mythology into the form most familiar today.

Q: How do the Celtic languages handle the masculine and feminine distinctions in naming?

A: The Celtic languages are grammatically gendered but handle masculine and feminine naming somewhat differently from the Romance languages. In Irish, the Ó and Mac patronymic prefixes indicate male descent while the Ní and Mac with different vowel mutations indicate female descent from the same ancestor. In Welsh, the prefix map or mab, son of, in the full form and ap or ab in the contracted form indicates male patronymic descent while ferch indicates female descent. The name itself, however, does not always change by gender in the Celtic traditions in the way that Latin names change their endings. Some Celtic names are used for both males and females, and the gendering conventions are more fluid than in the Roman naming tradition.

Conclusion

Celtic masculine names carry within them the evidence of the oldest continuous mythological tradition in Western Europe, a tradition that never stopped understanding the world as populated by forces that were simultaneously natural and divine, where the salmon in the river carried all the world’s wisdom, where the raven was the messenger between the living and the dead, where the hero who sailed west was not simply sailing toward the horizon but toward a different kind of reality altogether. They carry the sound of languages shaped by Atlantic weather and mountain acoustics, languages that were pushed to the edge of the world and survived there, that were beaten out of children for generations and returned, that were threatened with extinction in every century and refused to become extinct, that are spoken today by communities whose insistence on maintaining them is itself an act of cultural courage that the names they speak carry within them. When you give a boy a Celtic name, you give him a connection to the oldest living mythological tradition in Europe, a connection to landscapes of extraordinary natural beauty, and a connection to the specific quality of people who understand that the most important things cannot be seen with the ordinary eyes and that the line between this world and the other world is thinner than anyone who has not grown up speaking a Celtic language will ever quite believe. Which name is your favorite? I would love to hear in the comments below!