Irish Clan Name Generator

Historical Irish septs and kindreds, plus original clans

Real-World Names & CulturesPart of: guild, clan and faction generatorsPart of: real-world name generators1,000 names

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Generate Irish clan names: early kindreds such as Uí Néill, Cenél Conaill and Dál gCais, Gaelic septs and their branches (O'Neills of Clandeboye, MacCarthy Reagh of Carbery), gallowglass and Gaelicised Norman houses, plus original clans for fiction, each with an English gloss.

About Irish clan names

An Irish clan was a kin group named for an ancestor rather than a place. The oldest names put a collective word in front of the founder's name: Uí (descendants, as in Uí Néill, the descendants of Niall), Cenél (kindred), Clann (children), Síl (seed) and Dál (share or division). Some name whole peoples: the Ulaid, the Laigin, the Múscraige. Once surnames took hold, the leading families became the septs known today in English spelling: O'Brien, MacCarthy, O'Neill. Their branches were told apart by a territory (the O'Neills of Clandeboye) or by an epithet such as Mór (great), Óg (young), Roe (red) or Reagh (brindled).

This list has 1,000 names. Most are historical: early kindreds and peoples in Irish spelling, Gaelic septs and their branches, the gallowglass families who came from western Scotland as hired soldiers (MacSweeney, MacDonnell, MacCabe), and Norman houses, many of which took on Gaelic ways, such as the Burkes of Clanricarde.

Every entry with an English gloss in parentheses, such as Clann na bhFiach (Clan of the Ravens), is an original clan made for fiction, not a historical one. The originals join a collective word such as Clann, Muintir or Síol to an animal, a landscape or a craft. A historical name here is no guide to ancestry: unrelated families often share a surname.

How to choose Irish clan names

  • Pick the period first. An early medieval setting wants the Uí, Cenél and Dál forms (Uí Fidgenti, Cenél nEógain); a story set between about 1200 and 1600 wants surname septs and branches (O'Rourkes of West Breifne, MacSweeney Fanad).
  • Name a branch the historical way: keep the sept name and add a territory or an epithet, as in O'Briens of Ara or O'Driscoll Óg, instead of making up a new surname.
  • Copy an Irish name whole. The extra letters in Dál gCais, Cenél nEógain and Clann Cholmáin are grammar, not typos, and a name rebuilt from parts usually comes out wrong.
  • For an invented clan, start from a glossed original such as Síol na Stoirme (Seed of the Storm). Real kindred names carry real history, and readers who know it will expect your story to match.
  • In running text most entries take 'the': the Uí Maine, the Déisi Muman, the O'Neills of the Fews.

Frequently asked questions

What is the difference between a clan, a sept and a kindred?

Sept is the usual English word for an Irish family group that shared a surname, an ancestor and a chief, like the O'Dohertys of Inishowen. Kindred or dynasty is used for the older and larger groups, such as Cenél Conaill or the Eóganachta, from which many septs descended. Clan comes from the Irish clann, children, and this generator uses it loosely for all of them.

Which names in the list are historical and which are invented?

Entries with an English gloss in parentheses are original, for example Clann an Cheo (Clan of the Mist) and Muintir na nOileán (People of the Islands). Entries without a gloss come from the historical record, such as Uí Maine, Dál Fiatach, O'Connor Don and the Fitzgeralds of Desmond, or in a few cases from early Irish legend and origin tales, such as the Fir Bolg and Clann Baíscne. An original name can still happen to match a real place or family, and any historical name is worth confirming in a reference work before you use it for research.

Does the generator give tartans, crests or mottoes?

No. The list is names only. Clan tartans are a Scottish tradition, and the historical Irish clans did not have them.

Can I use these names for a novel, a guild or a tabletop campaign?

Yes. The historical names suit historical fiction and family-history flavor, and branch names like MacDermots of Moylurg show how a sept was tied to its land. For a made-up setting, the glossed originals keep your story clear of a real family's history.

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All 1,000 Irish clan names

This is the complete list the generator above draws its random batches from, sorted A to Z and grouped by first letter.

Plain text, one name per line.

A: 6 names

  • Áes Gréine
  • Airgíalla
  • Airthir
  • Araid Cliach
  • Araid Tíre
  • Athys of Galway

B: 21 names

  • Barnewalls of Trimlestown
  • Barretts of Ballincollig
  • Barretts of Tirawley
  • Barry Mór of Barrymore
  • Barry Óg of Kinalea
  • Barry Roe of Ibane
  • Benntraige
  • Berminghams of Athenry
  • Berminghams of Carbury
  • Blakes of Menlo

B, continued

  • Bodkins of Galway
  • Bregmaine
  • Brownes of Galway
  • Burkes of Castleconnell
  • Burkes of Clanricarde
  • Butlers of Cahir
  • Butlers of Dunboyne
  • Butlers of Kilcash
  • Butlers of Mountgarret
  • Butlers of Ormond
  • Butlers of Paulstown

C: 404 names

  • Caenraige
  • Cairpre Dromma Cliab
  • Cairpre Gabra
  • Calraige
  • Calraige Locha Gile
  • Cantillons of Ballyheigue
  • Cantwells of Moycarkey
  • Cenél Áeda na hEchtge
  • Cenél Coirpri
  • Cenél Conaill
  • Cenél Dobtha
  • Cenél Dúngaile
  • Cenél Fagartaig
  • Cenél Feradaig

C, continued

  • Cenél Fergusa
  • Cenél Fermaic
  • Cenél Fiachach
  • Cenél Guaire
  • Cenél Lóegairi
  • Cenél Luacháin
  • Cenél Lugdach
  • Cenél Maic Ercae
  • Cenél Maine
  • Cenél mBéce
  • Cenél mBinnig
  • Cenél mBógaine
  • Cenél Moain
  • Cenél nÁeda
  • Cenél nArdgail

C, continued

  • Cenél nÉndai
  • Cenél nEógain
  • Cenél Tigernaig
  • Cianachta
  • Cianachta Breg
  • Cianachta Glinne Geimin
  • Ciarraige Aí
  • Ciarraige Cuirche
  • Ciarraige Locha na nÁirne
  • Ciarraige Luachra
  • Clan Fox of Teffia
  • Clan Kavanagh
  • Clan Kinsella
  • Clan MacArdle
  • Clan MacAteer

C, continued

  • Clan MacAuley
  • Clan MacAuliffe
  • Clan MacBrady
  • Clan MacBrannan
  • Clan MacBride
  • Clan MacBrody
  • Clan MacCabe
  • Clan MacCafferty
  • Clan MacCaffrey
  • Clan MacCann
  • Clan MacCarron
  • Clan MacCartan
  • Clan MacCarthy
  • Clan MacCawell
  • Clan MacClancy

C, continued

  • Clan MacCloskey
  • Clan MacCoghlan
  • Clan MacColgan
  • Clan MacConroy
  • Clan MacConsidine
  • Clan MacCotter
  • Clan MacCrohan
  • Clan MacCrossan
  • Clan MacCurtin
  • Clan MacDarcy
  • Clan MacDermot
  • Clan MacDevitt
  • Clan MacDonagh
  • Clan MacDunlevy
  • Clan MacEgan

C, continued

  • Clan MacElroy
  • Clan MacEnchroe
  • Clan MacEniry
  • Clan MacEntaggart
  • Clan MacEvoy
  • Clan MacFadden
  • Clan MacFirbis
  • Clan MacGarry
  • Clan MacGeoghegan
  • Clan MacGeraghty
  • Clan MacGettigan
  • Clan MacGilligan
  • Clan MacGillycuddy
  • Clan MacGilmore
  • Clan MacGilpatrick

C, continued

  • Clan MacGinley
  • Clan MacGonigle
  • Clan MacGorman
  • Clan MacGovern
  • Clan MacGowan
  • Clan MacGrath
  • Clan MacGuinness
  • Clan MacHale
  • Clan MacHugh
  • Clan MacInerney
  • Clan MacKenna
  • Clan MacKeogh
  • Clan MacLoughlin
  • Clan MacMahon
  • Clan MacManus

C, continued

  • Clan MacMenamin
  • Clan MacMurrough
  • Clan MacNamara
  • Clan MacNamee
  • Clan MacNulty
  • Clan MacParland
  • Clan MacRannall
  • Clan MacRoarty
  • Clan MacShanley
  • Clan MacTiernan
  • Clan MacTully
  • Clan MacWard
  • Clan Maguire
  • Clan O'Beirne
  • Clan O'Boyle

C, continued

  • Clan O'Brennan
  • Clan O'Breslin
  • Clan O'Bric
  • Clan O'Brien
  • Clan O'Brollaghan
  • Clan O'Byrne
  • Clan O'Cahan
  • Clan O'Cahill
  • Clan O'Callaghan
  • Clan O'Cannon
  • Clan O'Carolan
  • Clan O'Carroll
  • Clan O'Cassidy
  • Clan O'Clery
  • Clan O'Coffey

C, continued

  • Clan O'Collins
  • Clan O'Concannon
  • Clan O'Connell
  • Clan O'Connolly
  • Clan O'Connor
  • Clan O'Corrigan
  • Clan O'Cronin
  • Clan O'Crowley
  • Clan O'Cullen
  • Clan O'Daly
  • Clan O'Davoren
  • Clan O'Dea
  • Clan O'Deery
  • Clan O'Dempsey
  • Clan O'Devlin

C, continued

  • Clan O'Dinneen
  • Clan O'Doherty
  • Clan O'Donnell
  • Clan O'Donnelly
  • Clan O'Donoghue
  • Clan O'Donovan
  • Clan O'Doran
  • Clan O'Dowd
  • Clan O'Dowling
  • Clan O'Driscoll
  • Clan O'Duffy
  • Clan O'Dugan
  • Clan O'Duigenan
  • Clan O'Dunne
  • Clan O'Dwyer

C, continued

  • Clan O'Fallon
  • Clan O'Falvey
  • Clan O'Farrell
  • Clan O'Farrelly
  • Clan O'Feeney
  • Clan O'Finn
  • Clan O'Flaherty
  • Clan O'Flanagan
  • Clan O'Flannery
  • Clan O'Flynn
  • Clan O'Fogarty
  • Clan O'Foley
  • Clan O'Friel
  • Clan O'Gallagher
  • Clan O'Gara

C, continued

  • Clan O'Garvey
  • Clan O'Gorman
  • Clan O'Gormley
  • Clan O'Grady
  • Clan O'Hagan
  • Clan O'Halloran
  • Clan O'Hamill
  • Clan O'Hanlon
  • Clan O'Hanly
  • Clan O'Hanrahan
  • Clan O'Hara
  • Clan O'Harkin
  • Clan O'Hart
  • Clan O'Hartigan
  • Clan O'Hea

C, continued

  • Clan O'Healy
  • Clan O'Heaney
  • Clan O'Heffernan
  • Clan O'Hegarty
  • Clan O'Hehir
  • Clan O'Herlihy
  • Clan O'Heyne
  • Clan O'Hickey
  • Clan O'Higgins
  • Clan O'Hoey
  • Clan O'Hogan
  • Clan O'Horan
  • Clan O'Hurley
  • Clan O'Hussey
  • Clan O'Kearney

C, continued

  • Clan O'Keeffe
  • Clan O'Keenan
  • Clan O'Kelleher
  • Clan O'Kelly
  • Clan O'Kennedy
  • Clan O'Kinealy
  • Clan O'Kirwan
  • Clan O'Lalor
  • Clan O'Larkin
  • Clan O'Laverty
  • Clan O'Leary
  • Clan O'Lee
  • Clan O'Lennon
  • Clan O'Liddy
  • Clan O'Lonergan

C, continued

  • Clan O'Long
  • Clan O'Loughlin
  • Clan O'Loughran
  • Clan O'Luinin
  • Clan O'Lynch
  • Clan O'Lynn
  • Clan O'Madden
  • Clan O'Mahony
  • Clan O'Malley
  • Clan O'Mannion
  • Clan O'Meagher
  • Clan O'Meara
  • Clan O'Melaghlin
  • Clan O'Mellan
  • Clan O'Molloy

C, continued

  • Clan O'Monaghan
  • Clan O'More
  • Clan O'Moriarty
  • Clan O'Morrison
  • Clan O'Mulconry
  • Clan O'Muldoon
  • Clan O'Muldory
  • Clan O'Mulholland
  • Clan O'Mullally
  • Clan O'Mullan
  • Clan O'Mulrennan
  • Clan O'Mulryan
  • Clan O'Mulvey
  • Clan O'Naughton
  • Clan O'Neill

C, continued

  • Clan O'Neylan
  • Clan O'Nolan
  • Clan O'Phelan
  • Clan O'Quin
  • Clan O'Rafferty
  • Clan O'Regan
  • Clan O'Reilly
  • Clan O'Riordan
  • Clan O'Rogan
  • Clan O'Rourke
  • Clan O'Ryan
  • Clan O'Scanlan
  • Clan O'Scully
  • Clan O'Shaughnessy
  • Clan O'Shea

C, continued

  • Clan O'Sheridan
  • Clan O'Shiel
  • Clan O'Spillane
  • Clan O'Sullivan
  • Clan O'Tierney
  • Clan O'Toole
  • Clann Amhlaoibh
  • Clann an Airgid (Clan of the Silver)
  • Clann an Átha Rua (Clan of the Red Ford)
  • Clann an Bhádóra (Clan of the Boatman)
  • Clann an Chaorthainn (Clan of the Rowan)
  • Clann an Cheo (Clan of the Mist)
  • Clann an Chlaímh (Clan of the Sword)
  • Clann an Chnoic Aird (Clan of the High Hill)
  • Clann an Chruitire (Clan of the Harper)

C, continued

  • Clann an Chuain (Clan of the Harbor)
  • Clann an Chuilinn (Clan of the Holly)
  • Clann an Draoi (Clan of the Druid)
  • Clann an Dúin Bháin (Clan of the White Fort)
  • Clann an Easa (Clan of the Waterfall)
  • Clann an Fhiaigh Dhuibh (Clan of the Black Raven)
  • Clann an Fhile (Clan of the Poet)
  • Clann an Fhraoigh (Clan of the Heather)
  • Clann an Ghleanna Ghlais (Clan of the Green Glen)
  • Clann an Iarainn (Clan of the Iron)
  • Clann an Iúir (Clan of the Yew)
  • Clann an Locha Dhuibh (Clan of the Black Lake)
  • Clann an Mharcaigh (Clan of the Rider)
  • Clann an Óir (Clan of the Gold)
  • Clann an Tobair (Clan of the Well)

C, continued

  • Clann an tSealgaire (Clan of the Hunter)
  • Clann an tSléibhe Mhóir (Clan of the Great Mountain)
  • Clann an tSneachta (Clan of the Snow)
  • Clann Aodha Buidhe
  • Clann Baíscne
  • Clann Bhreasail
  • Clann Bhriain Ruaidh
  • Clann Chana
  • Clann Chaoich
  • Clann Chathail
  • Clann Cheallaigh
  • Clann Chearnaigh
  • Clann Chéin
  • Clann Cholgain
  • Clann Cholla

C, continued

  • Clann Cholmáin
  • Clann Cholmáin Bicc
  • Clann Chonchobhair
  • Clann Chonnmaig
  • Clann Choscraig
  • Clann Chraith
  • Clann Chuiléin
  • Clann Dálaigh
  • Clann Diarmata
  • Clann Domhnaill
  • Clann Domhnaill Ruaidh
  • Clann Fheorais
  • Clann Fhergaile
  • Clann Fhiamhain
  • Clann Ghiobúin

C, continued

  • Clann Máelruanaid
  • Clann Mhaicne Eoghain
  • Clann Mhaoilughra
  • Clann Mhathghamhna
  • Clann Mhuircheartaigh
  • Clann Mhuiris
  • Clann Morna
  • Clann Murchada
  • Clann na Beithe (Clan of the Birch)
  • Clann na bhFaolchon (Clan of the Wolves)
  • Clann na bhFiach (Clan of the Ravens)
  • Clann na Carraige Léithe (Clan of the Gray Rock)
  • Clann na Ceárta (Clan of the Forge)
  • Clann na Coille Duibhe (Clan of the Black Wood)
  • Clann na Cruite (Clan of the Harp)

C, continued

  • Clann na Darach (Clan of the Oak)
  • Clann na dTonn (Clan of the Waves)
  • Clann na dTorc (Clan of the Boars)
  • Clann na Gaoithe Aniar (Clan of the West Wind)
  • Clann na gCloch Liath (Clan of the Gray Stones)
  • Clann na gCon (Clan of the Hounds)
  • Clann na gCorr (Clan of the Herons)
  • Clann na gCrann (Clan of the Trees)
  • Clann na gCuradh (Clan of the Champions)
  • Clann na Gealaí (Clan of the Moon)
  • Clann na Gréine (Clan of the Sun)
  • Clann na hAbhann Móire (Clan of the Great River)
  • Clann na Laoch (Clan of the Heroes)
  • Clann na Long (Clan of the Ships)
  • Clann na Mara Móire (Clan of the Great Sea)

C, continued

  • Clann na mBeann (Clan of the Peaks)
  • Clann na mBradán (Clan of the Salmon)
  • Clann na mBroc (Clan of the Badgers)
  • Clann na Móna (Clan of the Moor)
  • Clann na nDamh (Clan of the Stags)
  • Clann na nDobhrán (Clan of the Otters)
  • Clann na nEach (Clan of the Steeds)
  • Clann na nEalaí (Clan of the Swans)
  • Clann na nGleann (Clan of the Glens)
  • Clann na nIolar (Clan of the Eagles)
  • Clann na Réaltaí (Clan of the Stars)
  • Clann na Seabhac (Clan of the Hawks)
  • Clann na Sionnach (Clan of the Foxes)
  • Clann na Sleá (Clan of the Spear)
  • Clann na Trá Báine (Clan of the White Strand)

C, continued

  • Clann Sínaich
  • Clann Taidg
  • Clann Taidhg Ruaidh
  • Clann Taidhg Uí Bhriain
  • Clann Tomaltaig
  • Clann tSíthigh
  • Clann tSuibhne
  • Clann Uadach
  • Clann Uilliam
  • Clanna Dedad
  • Clanna Rudraige
  • Conaille Muirthemne
  • Condons of Cloghleagh
  • Conmaicne
  • Conmaicne Cúile Tolad

C, continued

  • Conmaicne Dúna Móir
  • Conmaicne Mara
  • Conmaicne Réin
  • Connachta
  • Corcu Achlann
  • Corcu Baiscind
  • Corcu Duibne
  • Corcu Fir Trí
  • Corcu Loígde
  • Corcu Mogha
  • Corcu Mruad
  • Corcu Óchae
  • Corcu Roíde
  • Cruthin
  • Cuircne

D: 28 names

  • Dál Birn
  • Dál Coirpri Arad
  • Dál Cormaic
  • Dál Cuinn
  • Dál Fiatach
  • Dál gCais
  • Dál mBuain
  • Dál mBuinne
  • Dál Messin Corb
  • Dál nAraidi
  • Dál Riata
  • Dál Sailni
  • Daltons of Rathconrath
  • Dartraige

D, continued

  • Dartraige Coininnsi
  • De Courcys of Kinsale
  • Deanes of Galway
  • Déisi Becc
  • Déisi Breg
  • Déisi Muman
  • Déisi Tuaiscirt
  • Delbna
  • Delbna Bec
  • Delbna Bethra
  • Delbna Mór
  • Delbna Nuadat
  • Delbna Tíre Dá Locha
  • Dillons of Kilkenny West

E: 13 names

  • Éile
  • Éile Deiscirt
  • Éile Tuaiscirt
  • Eóganacht Áine
  • Eóganacht Airthir Chliach
  • Eóganacht Chaisil
  • Eóganacht Glendamnach
  • Eóganacht Locha Léin
  • Eóganacht Ninussa
  • Eóganacht Raithlind
  • Eóganachta
  • Érainn
  • Eustaces of Baltinglass

F: 45 names

  • Ferriters of Ballyferriter
  • Fir an Átha (Men of the Ford)
  • Fir an Chlaímh Ghil (Men of the Bright Sword)
  • Fir an Chósta (Men of the Coast)
  • Fir an Ghleanna Mhóir (Men of the Great Glen)
  • Fir an Oileáin Ghlais (Men of the Green Island)
  • Fir an tSléibhe (Men of the Mountain)
  • Fir Arda Ciannachta
  • Fir Bile
  • Fir Bolg
  • Fir Breg
  • Fir Chell
  • Fir Chraíbe
  • Fir Chúl
  • Fir Domnann

F, continued

  • Fir Fernmaige
  • Fir Lí
  • Fir Luirg
  • Fir Maige Féne
  • Fir Manach
  • Fir na Coille (Men of the Wood)
  • Fir na gCapall (Men of the Horses)
  • Fir na hOíche (Men of the Night)
  • Fir na Long Dubh (Men of the Black Ships)
  • Fir na Mara Thiar (Men of the Western Sea)
  • Fir na nGort (Men of the Fields)
  • Fir na Sciath (Men of the Shields)
  • Fir Rois
  • Fir Tethba
  • Fir Thulach

F, continued

  • Fir Umaill
  • Fitzgeralds of Cloyne
  • Fitzgeralds of Desmond
  • Fitzgeralds of Glin
  • Fitzgeralds of Imokilly
  • Fitzgeralds of Kildare
  • Fitzgeralds of Rahinnane
  • Fitzgeralds of the Decies
  • Fitzmaurices of Lixnaw
  • Flemings of Slane
  • Fortuatha Laigen
  • Fothairt
  • Fothairt Fea
  • Fothairt in Chairn
  • Frenches of Monivea

G: 14 names

  • Gabhal Raghnaill
  • Gailenga
  • Gailenga Becca
  • Gailenga Móra
  • Gallowglass MacCabes of Oriel
  • Gallowglass MacDonnells of Leinster
  • Gallowglass MacDonnells of Tyrone
  • Gallowglass MacDowells of Roscommon
  • Gallowglass MacRorys of Connacht
  • Gallowglass MacSheehys of Munster
  • Gallowglass MacSweeneys of Tyrconnell
  • Gamanraige
  • Graces of Courtstown
  • Grecraige

H: 1 name

  • Hodnetts of Courtmacsherry

J: 1 name

  • Joyces of Joyce Country

K: 5 names

  • Kavanaghs of Borris
  • Kavanaghs of Clonmullen
  • Kavanaghs of Garryhill
  • Kavanaghs of Idrone
  • Kirwans of Cregg

L: 13 names

  • Lacys of Ballingarry
  • Laigin
  • Laigin Desgabair
  • Laigin Tuathgabair
  • Loígis
  • Loígis Réta
  • Lucht an Bhóthair (Folk of the Road)
  • Lucht an Cheoil (Folk of the Music)
  • Lucht na Faire (Folk of the Watch)
  • Lucht na Seilge (Folk of the Hunt)
  • Luigne
  • Lynches of Galway
  • Lynotts of Tirawley

M: 124 names

  • MacAuliffes of Duhallow
  • MacBrannans of Corcaghlan
  • MacCabes of Breifne
  • MacCanns of Clanbrassil
  • MacCartans of Kinelarty
  • MacCarthy Mór
  • MacCarthy Reagh of Carbery
  • MacCarthys of Coshmaing
  • MacCarthys of Drishane
  • MacCarthys of Duhallow
  • MacCarthys of Muskerry
  • MacCawells of Kinel Farry
  • MacClancys of Dartry

M, continued

  • MacClancys of Knockfinn
  • MacCoghlans of Delvin Eathra
  • MacConroys of Gnomore
  • MacCostellos of Sliabh Lugha
  • MacDavid Burkes of Clanconway
  • MacDermot Gall
  • MacDermot Roe
  • MacDermots of Coolavin
  • MacDermots of Moylurg
  • MacDevitts of Inishowen
  • MacDonaghs of Corran
  • MacDonaghs of Tirerrill
  • MacDonnells of Dunluce
  • MacDonnells of Mayo

M, continued

  • MacDonnells of the Glens
  • MacDunlevys of Ulidia
  • MacEgans of Duniry
  • MacEgans of Redwood
  • MacElligotts of Ballymacelligott
  • MacEoin Bissetts of the Glens
  • MacFineen Duff
  • MacFirbises of Lecan
  • MacGeoghegans of Kineleagh
  • MacGeraghtys of Muintir Roduibh
  • MacGibbons of Mayo
  • MacGillycuddy of the Reeks
  • MacGilpatricks of Upper Ossory
  • MacGormans of Ibrickan

M, continued

  • MacGoverns of Tullyhaw
  • MacGraths of Termon Magrath
  • MacGraths of Thomond
  • MacGuinnesses of Iveagh
  • MacHubert Burkes of Isertkelly
  • MacJordans of Gallen
  • MacKennas of Truagh
  • MacKeoghs of Moyfinn
  • MacLoughlins of Inishowen
  • MacMahons of Carrigaholt
  • MacMahons of Clonderalaw
  • MacMahons of Corcabaskin
  • MacMahons of Dartry
  • MacMahons of Farney

M, continued

  • MacMahons of Oriel
  • MacManuses of Senad
  • MacManuses of Tir Tuathail
  • MacNamara Fionn
  • MacNamara Reagh
  • MacNamaras of Tulla
  • MacPhilbins of Mayo
  • MacQuillans of the Route
  • MacRannalls of Muintir Eolais
  • MacRedmond Burkes
  • MacRoartys of Ballymagroarty
  • MacSweeney Banagh
  • MacSweeney Doe

M, continued

  • MacSweeney Fanad
  • MacSweeneys of Connacht
  • MacSweeneys of Muskerry
  • MacTiernans of Tullyhunco
  • MacWalter Burkes
  • MacWards of Lettermacaward
  • MacWilliam Burkes of Mayo
  • Magawleys of Calry
  • Maguires of Fermanagh
  • Maguires of Tempo
  • Martins of Ross
  • Masraige
  • Medraige
  • Mugdorna

M, continued

  • Mugdorna Breg
  • Mugdorna Maigen
  • Muintir an Bhealaigh (People of the Pass)
  • Muintir an Chaisil (People of the Stone Fort)
  • Muintir an Chladaigh (People of the Shore)
  • Muintir an Chósta Thiar (People of the West Coast)
  • Muintir an Deiscirt (People of the South)
  • Muintir an Droichid (People of the Bridge)
  • Muintir an Ghleanna Dhuibh (People of the Black Glen)
  • Muintir an Ghoirt (People of the Tilled Field)
  • Muintir an Iarthair (People of the West)
  • Muintir an Leasa (People of the Ringfort)
  • Muintir an Mhuilinn (People of the Mill)
  • Muintir an Oirthir (People of the East)

M, continued

  • Muintir an Tuaiscirt (People of the North)
  • Muintir Anghaile
  • Muintir Bháire
  • Muintir Bhirn
  • Muintir Chionaoith
  • Muintir Eolais
  • Muintir Ghiollagáin
  • Muintir Ifearnáin
  • Muintir Luinigh
  • Muintir Mhaoil Shionna
  • Muintir Mhaoilmhórdha
  • Muintir Mhurchadha
  • Muintir na Carraige Báine (People of the White Rock)
  • Muintir na Cille (People of the Church)

M, continued

  • Muintir na Cluana (People of the Meadow)
  • Muintir na Coille Móire (People of the Great Wood)
  • Muintir na hAbhann Duibhe (People of the Black River)
  • Muintir na nOileán (People of the Islands)
  • Muintir na Sléibhte (People of the Mountains)
  • Muintir Pheodacháin
  • Muintir Roduibh
  • Muintir Thadhgáin
  • Múscraige
  • Múscraige Breogain
  • Múscraige Mittaine
  • Múscraige Tíre
  • Múscraige Treithirne
  • Múscraige Trí Maige

N: 3 names

  • Nagles of Monanimy
  • Northern Uí Néill
  • Nugents of Delvin

O: 166 names

  • O'Beirnes of Tir Briuin
  • O'Boyles of Boylagh
  • O'Breens of Brawny
  • O'Brennans of Idough
  • O'Breslins of Fanad
  • O'Brics of the Decies
  • O'Briens of Aherlow
  • O'Briens of Ara
  • O'Briens of Carrigogunnell
  • O'Briens of Comeragh
  • O'Briens of Coonagh
  • O'Briens of Dromoland
  • O'Briens of Ennistymon

O, continued

  • O'Briens of Inchiquin
  • O'Briens of Leamaneh
  • O'Briens of Thomond
  • O'Byrnes of Crioch Branach
  • O'Byrnes of Newrath
  • O'Byrnes of Ranelagh
  • O'Cahans of Keenaght
  • O'Callaghans of Clonmeen
  • O'Cannons of Tyrconnell
  • O'Carrolls of Ely
  • O'Carrolls of Oriel
  • O'Caseys of Saithne
  • O'Clerys of Kilbarron
  • O'Concannons of Kiltullagh

O, continued

  • O'Connells of Derrynane
  • O'Connor Don
  • O'Connor Faly
  • O'Connor Kerry
  • O'Connor Roe
  • O'Connors of Corcomroe
  • O'Connors of Glengiven
  • O'Connors of Sligo
  • O'Crowleys of Kilshallow
  • O'Daly Carbery
  • O'Daly Fionn
  • O'Dalys of Finnyvara
  • O'Davorens of Cahermacnaghten
  • O'Deas of Dysert

O, continued

  • O'Dempseys of Clanmalier
  • O'Devlins of Munterdevlin
  • O'Dohertys of Ardmire
  • O'Dohertys of Inishowen
  • O'Donnellans of Ballydonnellan
  • O'Donnells of Tyrconnell
  • O'Donnellys of Ballydonnelly
  • O'Donoghue Mór
  • O'Donoghue of the Glens
  • O'Donovans of Clancahill
  • O'Donovans of Clanloughlin
  • O'Dooleys of Fertullagh
  • O'Dowds of Tireragh
  • O'Driscoll Mór

O, continued

  • O'Driscoll Óg
  • O'Driscolls of Baltimore
  • O'Driscolls of Cape Clear
  • O'Driscolls of Castlehaven
  • O'Driscolls of Collymore
  • O'Duigenans of Kilronan
  • O'Dunnes of Iregan
  • O'Dwyers of Kilnamanagh
  • O'Fallons of Clann Uadach
  • O'Falveys of Corkaguiny
  • O'Farrell Bane
  • O'Farrell Boy
  • O'Farrells of Annaly
  • O'Farrellys of Drumlane

O, continued

  • O'Finaghtys of Clanconway
  • O'Flahertys of Aughnanure
  • O'Flahertys of Ballynahinch
  • O'Flahertys of Bunowen
  • O'Flahertys of Iar Connacht
  • O'Flahertys of Moycullen
  • O'Flahertys of Renvyle
  • O'Flanagans of Toorah
  • O'Flynns of Sil Maelruain
  • O'Fogartys of Eliogarty
  • O'Friels of Kilmacrenan
  • O'Gallaghers of Tirhugh
  • O'Garas of Coolavin
  • O'Gormleys of Kinel Moen

O, continued

  • O'Gradys of Kilballyowen
  • O'Gradys of Tuamgraney
  • O'Hagans of Tullyhogue
  • O'Hallorans of Clann Fhergaile
  • O'Hanlons of Orior
  • O'Hanlys of Doohy Hanly
  • O'Hara Boy
  • O'Hara Reagh
  • O'Haras of Leyny
  • O'Haras of the Route
  • O'Harts of Grange
  • O'Hehirs of Hy Cormaic
  • O'Hennessys of Clann Cholgain

O, continued

  • O'Heynes of Kinvara
  • O'Hogans of Ardcrony
  • O'Hurleys of Knocklong
  • O'Keeffes of Duhallow
  • O'Kellys of Aughrim
  • O'Kellys of Breagh
  • O'Kellys of Gallagh
  • O'Kellys of Hy Many
  • O'Kellys of Mullaghmore
  • O'Kellys of Screen
  • O'Kennedy Don
  • O'Kennedy Fionn
  • O'Kennedy Roe
  • O'Kennedys of Ormond

O, continued

  • O'Lalors of Disert
  • O'Laverys of Moira
  • O'Learys of Iveleary
  • O'Loughlins of Burren
  • O'Lynns of Hy Tuirtre
  • O'Maddens of Silanchia
  • O'Mahony Carbery
  • O'Mahony Fionn
  • O'Mahonys of Ivagha
  • O'Mahonys of Kinelmeaky
  • O'Mahonys of Rosbrin
  • O'Malleys of Belclare
  • O'Malleys of Clare Island
  • O'Malleys of Murrisk

O, continued

  • O'Malleys of the Owles
  • O'Malones of Ballynahown
  • O'Mannions of Sodhan
  • O'Meaghers of Ikerrin
  • O'Mearas of Toomevara
  • O'Melaghlins of Meath
  • O'Molloys of Fircall
  • O'Morans of Ardnaree
  • O'Morchoes of Oulartleigh
  • O'Mores of Leix
  • O'Mulconrys of Ardkyle
  • O'Muldoons of Lurg
  • O'Mullallys of Tullynadaly
  • O'Mullans of Keenaght

O, continued

  • O'Mulryans of Owney
  • O'Naughtons of the Faes
  • O'Neills of Clandeboye
  • O'Neills of Kinard
  • O'Neills of Lower Clandeboye
  • O'Neills of the Feevagh
  • O'Neills of the Fews
  • O'Neills of Tyrone
  • O'Neills of Upper Clandeboye
  • O'Nolans of Forth
  • O'Phelans of the Decies
  • O'Quinns of Rathcline
  • O'Quins of Inchiquin
  • O'Reillys of East Breifne

O, continued

  • O'Rourkes of West Breifne
  • O'Ryans of Idrone
  • O'Shaughnessys of Gort
  • O'Sheas of Iveragh
  • O'Sullivan Beare
  • O'Sullivan Maol
  • O'Sullivan Mór
  • O'Sullivans of Ardea
  • O'Sullivans of Cappanacush
  • O'Tooles of Castlekevin
  • O'Tooles of Fercullen
  • O'Tooles of Imaal
  • Orbraige
  • Osraige

P: 10 names

  • Partraige
  • Partraige Cera
  • Plunketts of Dunsany
  • Pobal Bhriain
  • Pobal Uí Chaoimh
  • Pobal Uí Cheallacháin
  • Powers of Curraghmore
  • Powers of Dunhill
  • Prendergasts of Newcastle
  • Purcells of Loughmoe

R: 2 names

  • Roches of Fermoy
  • Russells of Lecale

S: 49 names

  • Saithne
  • Sarsfields of Lucan
  • Savages of the Ards
  • Síl Cathail
  • Síl Cellaig
  • Síl Chormaic
  • Síl Cuinn
  • Síl Lugdach meic Ítha
  • Síl Máeluidir
  • Síl mBrain
  • Síl Mella
  • Síl Muiredaig

S, continued

  • Síl nÁedo Sláine
  • Síl nAnmchada
  • Síl nDaimíni
  • Síl nÉbir
  • Síl nÉremóin
  • Síl nÍr
  • Síol an Bhradáin (Seed of the Salmon)
  • Síol an Fhathaigh (Seed of the Giant)
  • Síol an Fhiaigh (Seed of the Raven)
  • Síol an Iolair (Seed of the Eagle)
  • Síol an Laoich (Seed of the Hero)
  • Síol an Leoin (Seed of the Lion)

S, continued

  • Síol an Mhairnéalaigh (Seed of the Mariner)
  • Síol an Tairbh (Seed of the Bull)
  • Síol Aodha
  • Síol Éalaigh
  • Síol na Banríona (Seed of the Queen)
  • Síol na Mara (Seed of the Sea)
  • Síol na Stoirme (Seed of the Storm)
  • Síol na Tine (Seed of the Fire)
  • Skerretts of Galway
  • Sliocht Airt
  • Sliocht an Bhreithimh (Line of the Judge)
  • Sliocht an Chlaímh Bhriste (Line of the Broken Sword)

S, continued

  • Sliocht an Ghaiscígh (Line of the Warrior)
  • Sliocht an Mhadra Rua (Line of the Fox)
  • Sliocht an Mhaoir (Line of the Steward)
  • Sliocht an Taoisigh (Line of the Chieftain)
  • Sliocht an tSeabhaic (Line of the Hawk)
  • Sliocht an tSeanchaí (Line of the Storyteller)
  • Sliocht Diarmada Láimhdheirg
  • Sliocht Énrí Aimhréidh
  • Sliocht na Mná Sí (Line of the Fairy Woman)
  • Sliocht Ulick
  • Sogain
  • Southern Uí Néill
  • Stauntons of Carra

T: 12 names

  • Talbots of Malahide
  • Teallach Dúnchadha
  • Teallach Eachach
  • Tethbae
  • The Four Tribes of Tara
  • The Fourteen Tribes of Galway
  • The Seven Septs of Leix
  • Tradraige
  • Trí Comainn
  • Trí Tuatha
  • Tuites of Sonnagh
  • Tyrrells of Fertullagh

U: 81 names

  • Uaithni
  • Uaithni Cliach
  • Uaithni Tíre
  • Uí Ailello
  • Uí Ainmire
  • Uí Amalgada
  • Uí Bairrche
  • Uí Bairrche Tíre
  • Uí Bercháin
  • Uí Blathmaic
  • Uí Bloid
  • Uí Bresail
  • Uí Bresail Macha

U, continued

  • Uí Briúin
  • Uí Briúin Aí
  • Uí Briúin Bréifne
  • Uí Briúin Cualann
  • Uí Briúin na Sinna
  • Uí Briúin Seóla
  • Uí Briúin Umaill
  • Uí Buide
  • Uí Chairín
  • Uí Chairpri Áebda
  • Uí Chaisín
  • Uí Chéithig
  • Uí Chellaig Cualann
  • Uí Chennselaig

U, continued

  • Uí Chernaig
  • Uí Chonaill Gabra
  • Uí Chonaing
  • Uí Chormaic
  • Uí Chremthainn
  • Uí Chrimthainn Áin
  • Uí Chuanach
  • Uí Dega
  • Uí Derco Chéin
  • Uí Diarmata
  • Uí Dróna
  • Uí Duach
  • Uí Dúnchada

U, continued

  • Uí Dúnlainge
  • Uí Echach Arda
  • Uí Echach Cobo
  • Uí Echach Muman
  • Uí Enechglaiss
  • Uí Fáeláin
  • Uí Failge
  • Uí Fairchelláin
  • Uí Felmeda
  • Uí Felmeda Thes
  • Uí Felmeda Thuaid
  • Uí Fiachrach
  • Uí Fiachrach Aidne
  • Uí Fiachrach Arda Sratha

U, continued

  • Uí Fiachrach Muaide
  • Uí Fidgenti
  • Uí Fothaid
  • Uí Gabla
  • Uí Garrchon
  • Uí Liatháin
  • Uí Luigdech
  • Uí Máil
  • Uí Maine
  • Uí Meic Caille
  • Uí Meic Cairthinn
  • Uí Meic Uais
  • Uí Meic Uais Breg

U, continued

  • Uí Meic Uais Midi
  • Uí Méith
  • Uí Méith Macha
  • Uí Méith Mara
  • Uí Muiredaig
  • Uí Néill
  • Uí Nialláin
  • Uí Riagáin
  • Uí Rónghaile
  • Uí Segáin
  • Uí Thairdelbaig
  • Uí Théig
  • Uí Thuirtri
  • Ulaid

W: 2 names

  • Walshes of the Mountain
  • Whites of Dufferin