Clans who wish to apply to be included in the Register of Clans should register online here
Clans not included on the Register of Clans have not registered/renewed their membership for the current year. We await contact from these clans and individuals who are interested in organising a clan.
Clans are listed according to the most common English version of the surname followed by the original Irish version. Please note that individual Clan Societies may differ in the spelling variations they use in English and Irish and that where appropriate we have used the original prefix of O' and Mac but these are not always used with every variant of each Clan name or can sometimes be used differently e.g. Mc, Mac, Mag, M' etc.
Historically, the Cartys, often spelt as Carthy, or Ó Carthaigh in Irish, were recorded as being a dynasty of the Clann Cathail group of families in North Roscommon. The name derived from a king of Connaught called Cathail, who died in 735. The Ua Carthaigh were recorded as chief poets of Connaught under the famous O’Conor kings from 1067 to 1131. A later branch of the Clan established themselves as canons of the Premonstratensian monastery in Lough Key, Boyle from 1428 to 1517. A poet, Aodh Ollbhar Ua Carthaigh was also recorded in the mid-15th century, in Uí Maine territory (South Roscommon/East Galway). As centuries passed, the Clan spread out to surrounding counties in Connaught and the midlands. Today, the heaviest concentration of the name still exists in County Roscommon. Another separate unrelated clan of Cartys exist in Wexford. Carty is often confused with McCarthy from Munster but again is unrelated. Famous Cartys from County Roscommon include Brian Carthy, RTE sports presenter and Jack Carty, Connaught Rugby player.
Facebook: https://www.facebook.com/groups/792111524159104
E-mail: tcarty@live.ie
Contact: Mr Thomas Carty, Rosmeen, Ballintober, Castlerea, Co.Roscommon.
CONTACT: Bartle Ó Conghaile, Ballynaxos, Dunganstown, Brittas Bay West, Co Wicklow.
EMAIL: bartconnollyseanad@gmail.com
E-Mail: bishop.giffin@gmail.com
Contact: The Right Reverend Robert Todd Giffin, "Ceann Fine" 24019 Seven Winds, San Antonio, TX 78258-7266, USA
Contact: Karen Fitzpatrick Hall, 12375 Wallace Pike, Bristol, Virginia, USA 24202
Website: www.fitzpatrickclan.org
E-mail: karidancer@aol.com
Website: www.fitzpatrickclan.org
E-mail: admin@fitzpatrickclan.org
Contact: Dr Mike Fitzpatrick, 731 South Titirangi Rd, Auckland 0604, New Zealand
Website: www.fitzpatrickclan.org
E-mail: ian@fitzpatrickclan.org
Contact: Ian Fitzpatrick, Chaffey’s Locks, Ontario, Canada KOG 1E0
The Hacketts (of Norman origin) settled in Leinster in the 12th Century in Kildare, Kilkenny, Dublin, Wicklow and Carlow.
Contact: Cav. Uilliam Ó hAicéad GCEG. MSt.J. FSAScot. BB.
Address: 10a Lefroy Street Coatbridge North Lanarkshire ML51PN Scotland
Website: http://haicead.wix.com/clan-ohaicead-
Email: haicead@aol.com
(O) Hoban Clan Ó hÚbáin, a branch of the Cenél Eoghain who settled in Co. Mayo.
From the 17th century a branch of the Hobans had settled in Co. Kilkenny.
Email: denisparnell@sympatico.ca
Contact: Baron Denis A. Hoban, 1930 Lawerance Ave West, Toronto Ontario, M9N-1H2, Canada.
The Joyces are a family who are believed to have come to Ireland from Wales around the end of the twelfth century. They became hibernicized and by the sixteenth century had acquired much land in West Connacht in a mountainous area generally referred to as Joyce Country. They are recognized as having been one of the fourteen Tribes of Galway.
Website: www.tribejoyce.com/
Email: laurie.joyce@outlook.com
Contact: Mr. Laurie Joyce, 16 Pickerel Ave, Clyde North, VIC 3978, Australia
Based on recent Y-DNA evidence and traditional genealogical evidence, there are Joyce lineages from Ulster who claim Scottish descent. Arriving from Banff, Scotland during the early 18th century, some of these lines include Thomas Joass (Joyce) (1683-1725) of County Down, Ireland, George Joyce (1767-1807) of Ireland, and William Joyce (b. 1814) of County Armagh, Ireland. Today, many of their documented descendants live in the US and Canada.
Contact: Mr. David Joyce
Email: djoyce2889@gmail.com
Website: https://www.clanjoyceofulster.com/
Facebook Group: Clan Joyce of Ulster
The Mac Cabes (Clann Cába) were a strong Gallowglass Clan who first appear in the Irish Annals in 1358 and who, by 1424, were recognised as Constables of the two Breffneys (Cavan and Leitrim), Fermanagh and Oriel (Monaghan)
Email: brianfrancis.mccabe@gmail.com
Contact: Mr. Brian McCabe, Ivy Cottage, Johnstown, Naas, County Kildare, Ireland.
This clan orignates in Thomond but later was found in Cork. Up to the end of the 16th century the English version of the name was MacCruttin. In the census of 1659 in Counties Cork, Kerry and Limerick similar sounding names such as Mac Curatine and O' Curataine were treated as synonymous although they are not the same clan.
Website: www.curtin.org
Email: curtinclan@gmail.com
Contact: Mr. Dan Curtin, 45 Bishop Nelson Road, Valatie, NY US 12184, phone 518-758-9480.
The McGarvey Mac Gairbhith Septs Association currently represents the following Clans:
Ó Gairbhith of Donegal,
Mac Gairbhith of Armagh,
Garvey,
Ó Gairbhith.
Contact: Mayor Jamie McGarvey, 42, River St., Parry Sound, Ontario, Canada. P2A 2T6.
Website: www.mcgarveyseptsofulster.com
Email: Jamie McGarvey - jg1mcgarvey@gmail.com
Mac Ginley Clan Mag Fhionnghaile is a Donegal Clan claiming descent from one who was "fair" or "valour".
Website: www.mcginleyclan.org
Email: eolas@mcginleyclan.org
Ginnell [Westmeath]; Ginnelly [Mayo].
Contact: Proinsias Mag Fhionnghaile, Teonraigh, Béal Átha Seanaidh, Tír Chonaill, Éire.
The McGrath Clan were co-arbs of the ancient pilgrimage islands (Saints Island and Station Island) known as Saint Patrick's Purgatory of Lough Derg, Co. Donegal. The territory under the control of the McGraths was known as Termondavog, after the local saint, and covered a large area of the modern counties of south east Donegal, west Tyrone and north west Fermanagh. Incorporating Termonmagrath (the sancutuary of the McGraths) and the neighbouring Termonamongan. The territory included the modern town of Pettigo and the townland of Aghnahoo Glebe where the McGrath Castle is located and the townland of Carrickmagrath (the rock of the McGraths) near Ballybofey, Co. Donegal, a possible inauguration site of the McGrath Chiefs.
The lands were held by the Clan McGrath since at least the early 13th Century, when they Annals first mention the death of the Co-rab of Lough Derg, the Mac Craith of the Termon in 1290. The Termon created a buffer between the lands of the Gaelic Lords O’Donnell of Donegal (Tyrconnell) to the west, O’Neill of Tyrone to the east and Maguire of Fermanagh to the south. The Termon was protected under Irish Brehon law and fell under the physical protection of the Clan McGrath, as did the Benedictine monastery located on Saint’s Island within the Lough.
Contact: Mr. Seán Alexander McGrath
Email: info@clanmcgrath.org
Website: www.clanmcgrath.org Facebook: www.facebook.com/clanmcgrath
Contact: Kathleen Blanchard
Email: kathb78@gmail.com
Mac Kenna Clan Mac Cionaoith a branch of the Southern Uí Néill settled in County Monaghan where they were Lords of Truath.
Contact: Siobhan McKenna McQuillan, Clossagh Beg, Rockcorry, Co. Monaghan - Secretary
Email: clannmckenna@gmail.com OR siobhanmcquillan777@hotmail.com
Website: www.clannmckenna.ie
Mc Laughlin of Donegal – Mac Lochlainn Dún na nGall are a senior branch of the Northern Uí Néill and a leading sept of Tirconnell who's seat was originally at Inishowen .
Email: conormclaughlin@mailbox.org
Contact: Conor Brian McLaughlin, Fanaghan, Inver, Co. Donegal.
Mac Mullen Mac Maoláin is a common surname in Ireland with more than one clan of the name.
Website: www.macmaolain.com
Email: laighinmc@gmail.com or mcmull1xx@yahoo.com
Contact: Col. Lyn David McMullen, 21-125 Cabernet Drive Okanagan Falls, BC, Canada V0H1R3.
Mac Shane Mac Seáin is equivalent to Johnson. In Ulster and Louth the Mac Shanes are a cadet branch of the O'Neills.
Website: www.clanmcshane.org
Contact name: Jameson Johnson McShane
Address: Waldburg Strasse 45, 71032 Boblingen, Germany
Email: clanmcshane@yahoo.co.uk
Contact: Donough TheMcGillycudddy
Email: mcgillycuddy01@gmail.com
Email: FranklinMalpass@hotmail.com
Contact: Franklin Malpass, 212 N. Stout St. Randleman, NC 27317
Website: http://clanmalpass.com
The Official newsletter of Clan Malpass is THE MALPASS MESSENGER, and will be forwarded [the Dec. edition of the Clan Malpass Newsletter] upon Request.
Apart from the Website the following social media are available
Twitter: @ClanMalpass
Facebook: https://www.facebook.com/clann.malpass.1/
Linked in: https://www.linkedin.com/in/clan-malpass-987ba31b9/
The Mannion Clan descend from Mainnín son of Flannabra, a tenth-century king of the Sogain people who dwelt in modern-day East Galway in medieval times. Mainnín was a direct descendant of an Ulster prince called Sogan Sálbuide son of Fiacha Araide, the 37th king of Ulster. Fiacha Araide and his descendants, the Dál nAraide, are depicted by the medieval Irish genealogists as having belonged to the Cruthin, an early band of settlers deemed to have reached Ireland about 600 BC.
The origin legend of the Sogain of East Galway informs us that their progenitor Sogan Sálbuide migrated from Ulster to Connacht, where the legendary Queen Medb granted him an extensive territory between the Clare river and the Suck, where he and his followers settled. This was the ancient tuath or kingdom of Sogan, over which the Ó Mainnín Clan ruled as kings and later as chiefs until the end of the Gaelic era in the seventeenth century.
The Ó Mainnín surname first appears in the Irish annals in 1135, when ‘Ó Mainnín, king of Sogan’ was slain at the battle of Áenach Máenmaige to the east of Loughrea. The tomb of the last known chief of the name of the Mannion Clan, John son of Melaghlin, can be seen in the impressive ruins of Kilconnell Abbey near Ballinasloe, where it is marked by an inscribed graveslab dated 1648.
Website: www.mannionclan.org
Email: joe@mannionclan.org
Contact: Dr. Joe Mannion, Bolag, Woodford, Co. Galway.
DNA project: in progress
E-mail: kmonaghan100@gmail.com
Contact: Kevin Monaghan, Beaghbeg, Caherlistrane Co Galway, Ireland
A clan located in the Co. Clare district of Thomand in north Munster.
Email: nemulqueen@gmail.com
Contact: Mr. Niall Mulqueen, 49 Silchester Park, Glenageary, Co.Dublin
E-mail: chrisanolan3@gmail.com
Contact: Christopher A Nolan III, 67 Commons Road, Clermont, New York, 12526 USA
Facebook: https://www.facebook.com/groups/1314731821884826
Wesite: https://nolanfamilies.org/
(O’) Boylan Clan of Darty – Ó Baoighealláin
The Boylans are a sept of Darty (County Monaghan). Before being subdued by the MacMahons of Oriel they were influential from Fermanagh to Louth.
Website: http://www.boylan.de/
Email: peter@boylan.de
Contact: Mr. Peter Boylan, Jagdweg 37, 90562 Heroldsberg, Germany.
The O'Brosnan's are a small but significant clan originating in a place called Brosna in County Kerry. In fact, the name in Irish Ó Brosnacháin means "a son of the descendent from Brosna". Brosnan is one of a handful of locational surnames found in Ireland.
Contact: Mr. Paul Brosnan, Uisneach, New Road. Greystones, Co. Wicklow.
Email: brosnan01@gmail.com
Clan website: www.obrosnanclan.ie
O'Byrne Ó Broin is a foremost clan in east Leinster, prominent in Irish history, especially in the resistance to English conquest.
Contact: Dr. Emmett O'Byrne, Hon Chief, O'Byrne Solicitors, Office C25, Wicklow Enterprise Centre, The
Murrough, Wicklow Town, Co Wicklow.
Email: emmettobyrne@gmail.com
Website: www.clanobyrne.com
O'Carroll Oriel Ó Cearbhaill Oirialla is an important clan who anciently ruled the Kingdom of Oriel (Co. Louth and Co. Monaghan).
Chief: Dr. Vincent J. O Carroll Oriel.
Website: www.carrolloforiel.com
E-mail: ocarrolloriel@eircom.net
Contact: Dr Vincent J H O Carroll Oriel, Fairfield House, off Newbridge Avenue, Sandymount, Dublin 4.
A Clan originating in the territory of the Dál gCais before migrating to Corca Baiscin in what is now County Clare.
Contact: Gearóid Ó Ceallaigh, Bromehill House, Kilrush, County Clare
Email: info@oceallaigh.ie
Email: oclearyclan@gmail.com
Contact: Mr. Fergus Cleary, 5 Main Street, Belleek, Co. Fermanagh BT93 3FY
Contact: Jean Baptiste Lagnie
Email : ebocolmain@gmail.com or lagnie127@aol.com
Clan website: https://www.facebook.com/irishcolemans/
O'Crowley Ó Cruadhlaoich derive their name from the Irish for hard (cruadh) hero (laoch). The clan originate in Moylurg in Connacht but migrated to West Cork where they became a leading clan.
Contact: Kate O'Reilly
Website: www.crowleyclan.com
Email: oreillycrowley@gmail.com
DNA Project in progress
O'Dea Ó Deághaidh Dísert is a Dalcassian clan based around their main seat at Dysert (Co. Clare). O'Dea is a name associated almost exclusively with the County Clare and the areas such as Limerick City and North Tipperary which immediately adjoin it. It is not a common name anywhere and even in County Clare is not numerous outside the part of the county where it originated. This is indicated by the place names Tully O'Dea and Dysert O'Dea, the site of a famous battle in 1318. The head of the clan was chief of a considerable territory comprising much of the Barony of Inchiquin.
Website: www.odeaclan.org
e-mail: shanej.odea@gmail.com
Contact: Mr. Shane O’Dea 45, Carysfort Park, Blackrock, Co. Dublin.
O'Donnell of Tyrconnell – Ó Domhnaill Tír Chonaill is the ruling clan of the ancient Kingdom of Tyrconnell who reigned until the completion of the English Conquest of Ireland in 1601. The clan's seat today remains focused mostly around County Donegal (with prominent branches in the Diaspora) but originally the Kingdom of Tyrconnell included all of Donegal and parts of Sligo, Leitrim, Fermanagh Tyrone and Southern Derry. The main seat of the clan's chiefly family is Donegal Castle.
Chief of the Name: Rev. Fr. Hugh O'Donnell, OFM, KM.
Tanaist: S.E. Don Hugo O'Donnell y Duque de Estrada, KM, Duke of Tetuan.
Website: https://clanodonnell.wordpress.com/clann-association/
Email: infoodonnellclanassociation@gmail.com
Contact: John O'Donnell, Kilmacrennan, Donegal.
O'Driscoll Ó hEidersceoil is an Anglicized form of the Gaelic Ó hEidirsceóil which is has the meaning of "diplomat" or "interpreter." The clan were based in Corcu Laídge where they were Kings.
Website: www.odriscoll.ie
Email1: tom@bushesbar.com
Contact: Mrs Marion (O'Driscoll)Bushe, Bushes Bar, Baltimore, West Cork, Ireland
yDNA Project Administrator: Susan Barretta, FCGS
Contact Email: driscolldna@pobox.com
Websites:
http://www.driscoll.dnagen.org
http://www.familytreedna.com/groups/driscoll
O'Farrell Ó Fearghail means "man of valour". This clan were numerous and important in Annaly and had their chief seat at Longfordm which was known as Longphort Uí Fhearghail (O'Farrell's fort).
Website: www.farrellclanireland.com
Email: johncfarrell@eircom.net
Contact: Ballymacormack Longford Co Longford
Flanagan is the name of at least five distinct and unrelated Irish Clans.
Flanagan of TuathRatha (Fermanagh)
Flanagan of Clann Chathail (Roscommon)
Flanagan of Comair and Teffia (Westmeath)
Flanagan of Cinel Arga (Offaly)
All of the above Clans are represented by the Flanagan Clans Society
Contact details:
Address: Granuaile O'Flanagan,55 Soi Ladphra 35, Baan Supar Apt, Room 405, Chan Kasem, Chatuchak, Bangkok, Thailand 10900
Email: granuaile1954@yahoo.com
Website: http://clanflanagan.org
See separate listing for Flanagan of Upperthird (Waterford).
O'Gara Ó Gadhra means descendant of Gadhra' (an old Irish personal name, perhaps from gadhar, a dog, mastiff); the name of a Connacht family, of the same stock as the O'Haras of Leyney. Both families are descended from Lugh, son of Cormac Gaileng, and had from him the common clan-name of Luighne. When the two families separated, about the end of the tenth century, they divided this territory between them, the O'Haras taking the northern, or Sligo, portion, and the O'Garas the southern, in Co. Mayo. The O'Garas were then styled lords of Sliabh Lugha, but after the English invasion of Connacht they were driven out of this territory and forced to seek a new settlement. This they acquired in the district anciently known as Greagraidhe, and now as the barony of Coolavin, in Co. Sligo, from which in later times they were known as lords of Coolavin.
Website: www.ogara.org
Email: cuppanagh@gmail.com
Contact: Mrs. Maura O'Gara-O'Riordan, 3 Cherry Park, Newcastle, Galway City, Ireland.
DNA Project in progress.
O'Higgins Ó hUigin is a clan which claims descent from Cenél Fiachach a branch of the Southern Uí Néill. The Clan were initially settled in the ancient Kingdoms of Brega and Mide before a branch migrated in the 12th century to Connacht. Principal seats were established in Westmeath at Kilbeg and in Sligo at Dooghorne, Monteige, and Ballynary.
Patron: Karl O'Higgins, The O'Higgins of Ballynary.
Website: www.ohigginsofireland.com
Email: karl.ohiggins@hotmail.co.uk
DNA project in progress.
O'Hosey, Husey Ó hEaodhusa were an important bardic family attached to the Maguires of Fermanagh.
Website: www.clanhosey.org
Email: hoseyclan@aol.com
Contact: Mr. Robert B. Hosey, 5757 Bermuda Drive, Walbridge Ohio 43465, U.S.A. DNA project in progress.
O'Lafferty Ó Laithbheartaigh are a clan of Ulster described in the Annals of the Four Masters as the "Tanists of Tyrone".
Website: www.clanlafferty.org
Email: jamie.richey@icloud.com
Contact: Jamie Lafferty Richey 544 Windy Road Mount Juliet, TN 37122
O'Lalor (Lawlor) Ó Leathlobhair are one of the "Seven Septs of Leix" who's seat was at the Rock of Dunamase.
Website: www.oleathlobhair.com
Email: carmodys@gmail.com
Contact: Mary Carmody, Rossleighan, Portlaoise, Co Laois.
Contact: John Moore: Honorary Clan Chieftain,
Email: jmoore_dub@yahoo.co.uk
6 Rochfort Park,Ballyowen Lane, Lucan, Co. Dublin, K78 T220, Ireland
The historical territory of the Uí Mhórdha (O'Moores) was primarily in Leix, now Co. Laois. There is an Irish language genealogy of the family written in the mid-17th century and is printed in the journal Analecta Hibernica (1951), no 18, p.140 [under pedigree no.1839) by a member of the genealogical-chronicler family, Ó Cléirigh. It is clear from this genealogy and other references (See 'The Midland Septs of the Pale' by F.R. Montgomery Hitchcock, 1908, pp 151) that the late medieval territory of the Uí Mhórdha stretched across Laois and Offaly, with the former sometimes referred to in 16th century English official correspondence as 'O'Moore's Country'. They were allied to the midland O'Conors and were displaced by the plantations of the midlands in the 1560s. They were present at the infamous massacre of Mullaghmast in 1578 which was perpetrated by English colonists during the plantation of Queens County (now Co. Laois). The 'Laigis' or Laigse were the early medieval population group who gave their name to Leix/Laois (previously Queens County), and they are often called 'secht Laigse Lagen' - the 'seven Laigse of Leinster'. They were a powerful group and in the medieval period their chief lineage was the Uí Mhórdha/O'Moores. The family still held some position in the aftermath of the Cromwellian confiscations of the 1650s for we see that they are recorded as landowners in Laois, as recorded in the 1659 Census of Ireland (ed. Seamus Pender).
O'Mulvihill means 'devotee of St. Michael' and originates in Connacht where they were an important clan. The name has also evolved over the years to Mitchell.
Email: mulvihillvoice@hotmail.com
Contact: Mary Ann Mulvihill-Decker
(O) Neill Ó Néill is a surname that is numerous throughout Ireland especially in Tyrone and Antrim. The Association of O'Neill Clans was established in 2007 and represents the following O'Neill Clans:
O'Neill of Tyrone
O'Neill of Fews
O'Neill of Clandaboy
O'Neill of Leinster i.e Carlow
O'Neill of Munster i.e. Decies and Thomond.
Website: www.oneillclans.com
Email: sean@oneill.ie
Contact: The Association of O’Neill Clans,
c/o Seán O’Neill, Clifton, 48 Castle Ave., Clontarf, Dublin 3, Ireland.
O'Sullivan Ó Súieabháin originated in South Tipperary before they were forced Westward during the Anglo-Norman invasion where they became one of the leading clans of Munster Eoghanacht. There are a number of sub branches represented by the clan association including:
O'Sullivan Mór
O'Sullivan Beare
O'Sullivan MacCragh
Mac Fineen Duff (extinct)
The cadet clan of MacGillycuddy of Reeks evolved into a separate clan and are listed separately on the Register of Clans.
Website: https://www.facebook.com/groups/osullivanclan
Email: patron@osullivanclan.com
O'Tierney Ó Tighearnaigh derived from the Gaelic word tighearnach meaning “lord” or “lordly”. Tighearnach, sometimes spelt Tigernaich or Tigernach or even Tignarach was a popular given name in ancient Ireland. The O'Tierney Clans Society was formed in 1990 to represent the following main septs of the name:
O'Tierney Chiefs of Farney (Armagh)
O'Tierney Chiefs and Lords of Ceara (Mayo)
O'Tierney Kings of Bréaga
Fearran O'Tierney (Tipperary)
O'Tierney of Corcu Modruad (Clare)
Website: http://tierneyclans.weebly.com/
Email: anotighearnaigh@gmail.com
Contact: Mr. Cathaoir Ó Tighearnaigh, Naomh Antoine, 53 Árd Aoibhinn, Athenry, County Galway, Ireland.
DNA Project in progress.
Clan Poole, a cadet branch and descendants of Mag Uidhir (Mcguire's of Co Waterford and Fermanagh). Mag Uidhir also a cadet branch of their Parent house Clan Conla. There are Baptismal records of the Poole's in Ireland from the 17th century.
Contact: Mr. Darren Poole, 39 Bird Street Ince Wigan, WN22AZ, Lancashire, England
Email: contact@clanpoole.org
Email: mj.livermore@bigpond.com
Website: a work in progress
Contact: Mellissa Livermore (nee Redfern) 26 Riddell St. Molong 2866, NSW Australia
The Roche Clan were a Norman family who settled in Ireland Munster and Wexford.
Contact: Sir David Roche Bt
Address: 20 Lancaster Mews, London, W2 3QE, England.
Email: sdr@rocheclan.org
Website: www.rocheclan.org