The following is a list of Irish clans that can be sourced from modern published sources.

Unlike Scottish clans which are defined by surnames recognized by Scottish law of the Court of the Lord Lyon, there is no definitive authority on which surnames are regarded as Irish clans.[1]

Clans of Ireland organization

Map showing principal Irish surnames at the commencement of the 17th century

Clans of Ireland is a modern organization that was started in 1989 and has eligibility criteria for surnames to be included on their register of Irish clans. This includes that the family or clan can trace their ancestry back to before 1691 which is generally considered to mark the end of the clan based lineage system in Ireland. There can be more than one clan with the same surname if of a different ancestry.[2] Clans of Ireland lists the following clans on their Register of Clans, some of whom have their own clan societies or associations:[3]

LangSyne Publishers

LangSyne Publishers, who are based in Kilbarrack, Dublin, Ireland, have published individual books on the following Irish clan surnames and their histories: Barry, Boyle, Brady, Brennan, Burke, Byrne, Callaghan, Carroll, Casey, Cassidy, Clancy, Collins, Connolly, Coyle, Daly, Devlin, Doherty, Donnelly, Donovan, Doran, Doyle, Duffy, Dunne, Farrell, Fitzgerald, Fitzpatrick, Flaherty, Flanagan, Flynn, Foley, Gallagher, Griffin, Healy, Higgins, Hogan, Joyce, Kane, Kavanagh, Kelly, Kennedy, Kenny, Lynch, Maguire, Malone, McCarthy, McCormick, McDermott, McGrath, McGuigan, McKenna, McLoughlin, McMahon, McManus, McNamara, Moore, Moran, Mullan, Murphy, Nolan, O'Brien, O'Dowd, O'Dwyer, O'Grady, O'Halloran, O'Hara, O'Keeffe, O'Leary, O'Neill, O'Rourke, O'Shea, O'Connor, Quinn, Reagan, Reilly, Rooney, Ryan, Sheehan, Sheridan, Sullivan, Sweeney, Traynor, Walsh, Ward, Whelan.[4]

John Grenham (1993)

John Grenham in his 1993 book, Clans and Families of Ireland: The Heritage and Heraldry of Irish Clans and Families, lists the following Irish clan surnames and gives at least a paragraph of information for each: Aherne, Allen, Armstrong, Barrett, Barry, Beatty, Bell, Boyd, Boyle, Bradley, Brady, Breen, Brennan, Browne, Buckley, Burke, Burns, Butler, Byrne, Cahill, Campbell, Carroll, Casey, Cassidy, Clancy, Clarke, Cleary, Coleman, Collins, Conlon, Connolly, Conway, Corcoran, Costello, Coughlan, Craig, Cronin, Crowley, Cullen, Cunningham, Curran, Daly, Delaney, Dempsey, Dillon, Doherty, Dolan, Donnelly, Doran, Dowd, Dowling, Doyle, Driscoll, Duffy, Duggan, Dunne, Dwyer, Egan, Fahy, Farrell, Ferguson, Finnegan, Fitzgerald, Fitzpatrick, Flaherty, Flanagan, Fleming, Flynn, Foley, Ford, Fox, Gallagher, Gorman, Graham, Greene, Griffin, Hall, Hamilton, Hayes, Healy, Hegarty, Hennessy, Henry, Hickey, Higgins, Hogan, Hughes, Hurley, Johnston, Jones, Joyce, Kane, Kavanagh, Keane, Kearney, Keating, Kelleher, Kelly, Kennedy, Kenny, Keogh, Kerr, Kiely, King, Leary, Lee, Lenehan, Lennon, Long, Lynch, Lyons, MacAuley, MacBride, MacCabe, McCann, MacCarthy, MacCormack, MacCullagh, MacDermot, MacDonagh, MacDonald, MacDonnell, MacEvoy, MacGillcuddy, MacGovern, MacGowan, MacGrath, MacGuiness, MacHugh, MacKenna, MacKean, MacLoughlin, MacMahon, MacManus, MacNally, MacNamara, Madden, MacGee, Maguire, Maher, Malone, Martin, Meehan, Molloy, Moloney, Monaghan, Mooney, Moore, Moran, Morgan, Moraiarty, Morris, Mullan, Mulligan, Murphy, Murray, Nolan, O'Brien, O'Callaghan, O'Connell, O'Connor, O'Donnell, O'Donoghue, O'Donovan, O'Grady, O'Hara, O'Keefe, O'Mahony, O'Neill, O'Rourke, O'Shea, O'Sullivan, O'Toole, Patterson, Power, Quigley, Quinn, Redmond, Regan, Reid, Reilly, Riordan, Robinson, Roche, Rogers, Rooney, Ryan, Scott, Sheehan, Sheridan, Smith, Stewart, Sweeney, Tobin, Wallace, Walsh, Whelan, White, Woods.[5]

See also


  1. ^ Leerssen, Joep (2008). "The 'The': Clan Chiefs in Modern Ireland". The Irish Review (Cork) (38): 111 and 115. JSTOR 29736378.
  2. ^ "Registering an Irish Clan - Registration Criteria". Retrieved September 16, 2023.
  3. ^ "Register of Clans". Retrieved September 16, 2023.
  4. ^ "Irish Books". Retrieved September 16, 2023.
  5. ^ Grenham, John (1993). Clans and Families of Ireland: The Heritage and Heraldry of Irish Clans and Families. Gill and Macmillan Publishers. pp. 78–183. ISBN 0717120325.