Hired mercenaries orignating from Scotland. The gaelic word cába
meaning a cap or a hood reflected their style of headdress. The
MacCabes are a numerous family and predominate in the Cavan area.
A county Cork family and different from Cadogan which has Welsh
Can also be found with the Mac attached. It is common in Donegal
and to a lesser degree in Fermanagh.
Related to the Maguires of Fermanagh. Fairly numerous also in counties
Cavan and Monaghan.
Rarely seen in any other part of Ireland except south-west Cork.
Largely confined to north Monaghan. Is a variant of the MacTeague
name from Tyrone.
Meaning mighty in battle, popular in west Cork and parts of Kerry.
A clan which is found in many parts of the country, including Galway
and Clare but also in Cavan and Donegal plus Tipperary.
Originated in England but now common in parts of Ulster, including
Cavan, Armagh and Tyrone - also Meath.
Thought to have been called after Ceallacháin, 10th century
King of Munster. The clan gives its name to Clare village, OCallaghans
Mills. Very numerous in Cork and neighbouring counties.
Unconnected with the town of the same name in Co. Kilkenny. Instead
it is a name most associated with Ulster, more particularly the
counties of Monaghan and Armagh.
One-time chief servants of the powerful MacCarthys of Cork. Another
branch of the family later settled in Galway but, to this day, are
most numerous in the Rebel County and neighbouring Kerry.
Very much associated with the northern counties of Donegal, Tyrone
and Derry. Centuries ago were mercenary soldiers in the employ most
of the Donegal ODonnells.
Very much identified with the Ulster-Scots people of Co. Antrim.
Is not seen anywhere else outside of the north-east of Ireland.
Despite the names association with Scotland, the Campbell
clans in Tyrone and Donegal are predominantly Irish in origin. A
common name in Ulster generally. Also Dublin.
Not unconnected with the surname champion as both are derived from
the french word for combatant as in battle. Most common in the midlands,
especially after the plantation of Laois and Offaly in the seventeenth
Found principally in Ulster, especially Tyrone and Armagh.
Confined almost exclusively to Ulster. Appears in various forms.
A common name in Ulster, especially in county Armagh.
Some of English origin but in some places related to the midland
name Cunneen. See Leitrim.
An old English family in Ireland since the twelfth century. See
Kilkenny and Cork.
From west Cork, sometimes called County
South Ulster around Monaghan and Armagh. Often Carragher.
Cairbre means charioteer, different septs. See Ballymacarbry in
Of Norman origin, long connected with Tipperary, Cork, Carlow and
Very common throughout, especially in western counties. Connected
to McCary, Crean, Currane, Keary, Kerins, Kerrane and Kierghry.
Of English and Irish origin. English family settled in Wexford and
Irish version is popular in Westmeath area.
A form of Carolan found in Donegal and Tyrone.
An old Thomand name found in Limerick and Clare.
Common throughout, especially in western seaboard counties like
Mayo and Clare. Also Meath. In Ulster often MacKearney.
An east Cavan - north Meath sept.
Often from MacAteer
Very popular in Donegal. An anglicised form of Carry, MacElhar,
Kerrane and Mulcair.
Found in Clare - Limerick area.
Very common. Various septs, the most important of which are from
the Laois, Offaly, Kilkenny area. Also Louth and south Ulster.
Related to the ONeills and found in Monaghan and Tyrone.
Popular in north Meath area.
Son of Art and a great Down name.
Of English origin.
One of the great Irish families and most common in the south west
Sometimes Scottish, others related to Mulhartagh and MacCaugherty
Often Carthy and found in Connacht, Wexford and Meath.
A south Ulster family. See Monaghan.
Numerous unrelated septs. Popular in Cork, Kerry, Mayo, Longford,
Roscommon and Westmeath.
Sometimes with the O. Popular enough in Laois, Tipperary and Waterford.
Comes from the Kerry name Kissane and mostly found in Cork.
Of Norse origin, found in Derry and Tyrone.
Found in Roscommon, Leitrim and Longford.
Of Norman origin and found in Meath.
A north midlands name.
A Fermanagh family who acted as physicians to the powerful Maguires.
See Derry nowadays.
Found in the Tipperary-Offaly area.
Often spelt MacCahey and a familiar name in Tyrone.
Related to McCall, also to MacCahill coming from the Irish MacCathmhaoil.
Found mainly in Ulster.
See MacAuley. Two different branches. One around the midlands and
the other more numerous in the north west.
An English settler family and connected to such local names as Caffrey
and Gaffney. Also MacCaul and common in Mayo.
Found in Derry and Tyrone.
An Antrim form of MacEvanny
See the more numerous Kavanagh.
A well known Waterford family.
Also Chivers. Arrived with the Normans and found mostly in Leinster.
OClabaigh means wide mounted and found in Roscommon.
See MacLafferty and mostly a Donegal name.
Meaning Laitheamh, the Irish word for ruler and fairly common in
Offaly and south Westmeath areas.
Two prominent branches. One in Clare who were attached to the OBriens
and the other in the north midland area of Roscommon and Leitrim.
An English name but most Clarkes are native Irish. Sometimes an
anglicised version of OClery.
A well known Laois-Offaly sept.
Or MacLean, of Scottish origin and common enough in the Derry, Antrim
and Dublin areas.
Or Clare in Meath, from the Norman De Cleir. See Kilkenny and Wexford.
Mac A leary in Sligo and most common in Ulster counties.
An old English name found in Ulster and Dublin areas.
Scottish origin who settled in Ulster.
Meaning clerk and a fairly popular name in Monaghan.
Or Cleary was a great Galway sept who migrated and are now mostly
found in Munster.
Often anglicised as Clifford and found in its original form in Tyrone
Or Clynch, of English origin and found in Meath-Dublin.
Another Scottish name associated with Antrim and Derry.
Or MacClinton which originated in Donegal and Fermanagh. Clinton
itself is of Norman origin.
Found in Roscommon.
Originates from Connemara.
From Ballycloghessy in Clare. Still attached to this area. See also
Often Clooney or McLoonie in Donegal. See Wexford.
An old Down-Armagh family.
Common enough in parts of Antrim.
Connected to the OKanes. Found in Derry and other neighbouring
parts of Ulster.
Another famous Scottish clan which arrived in Ireland during plantation
times. See Antrim.
Came from Scotland but ironically probably arrived there from Antrim-Derry
areas. Connected to MacAteer.
Connected to MacCluskey and found in Derry and Armagh.
See Cody. Found mostly in Kilkenny area.
Related to Kehilly and found in Cork
Arrived with the Plantation of Ulster. See Dublin.
Established in Laois, Offaly and Kildare area during the seventeenth
Popular enough in north Louth. In some cases from the Irish MacConboirne.
Scottish origin but often connected to Corcoran.
An old English family who settled in Wexford. Still mostly associated
with the Model County.
Related to the Coynes in Connacht, the Cowans in east Ulster and
Three main groupings. The two most numerous originate in west Cork
and along the border lines of Galway and Roscommon. Also a Bardic
family in Westmeath.
From the Norman de Cogan who settled in Cork and where they are
still numerous. Sometimes changed to Gogan or Goggins. Related to
A north Connacht sept who migrated to Cavan where they became known
An English name seen in Wexford and Offaly.
Found in Cavan and Meath and connected to Goldrick.
Connected to McCaul but Cole is also an English name which arrived
in Fermanagh-Cavan during Ulster Plantation times.
Found in Wexford
Two main branches, one in Derry-Tyrone, the other around the Offaly
Usually of Viking origin and fairly plentiful in Donegal.
Found in Mayo and Sligo.
Originates along the Mayo and Galway borderline.
Claims its identity to the Roscommon-Galway area.
An English name but most Irish Colemans arrived from the name OColman.
Connected to the Cork Cliffords.
An English name but very common in Meath and also in parts of Wexford
Found in the Oriel and sometimes anglicised to MacQuillan or MacCullen.
An English name but in Ireland it is generally the anglicised version
of OCoileáin. Very popular in Cork and neighbouring
parts of Limerick.
Mostly found in Limerick.
Related to MacCullagh, Coloe can be found in Meath and Westmeath.
Mostly an Ulster name but Colum is found around the Longford area.
A Scottish family and now common enough in the north east. Connected
A close relation of the Kerrigans of Galway and Mayo. Also Kerin.
An English family tracing its roots back to 1210 in Ireland. Found
mainly in Kilkenny.
Connected to Coomey, Comey can be found in Cavan, Meath. Also in
MacCumascaigh, meaning confuser. Found in Monaghan, and along the
From OComáin in Munster and Ó Cuimín
in Connacht. Sometimes called Commons in Wexford and Cummins in
Came with the Normans. Rare but found in Wexford and Louth.
A Donegal name, often changed to Cunningham
A branch of the Scottish clan Robertson.
Originated in east Cavan and associated with the townland of Munterconnacht.
Meaning yellow hound. related to Conway and found in Sligo-Roscommon
OConcheanainn means fairheaded hound and is found in Mayo
Popular enough in Cork and neighbouring counties.
Often spelt Conran and comes from the Laois-Offaly area.
An Offaly name, sometimes related to Connolly.
Meaning man from Connacht, found in north Louth area as Conachy.
A popular Connacht name, originally from Mayo-Sligo area and more
recently in Roscommon.
A Connemara name. Related to Nealy and Corneely.
Usually MacDhomhnaill and not McConaill meaning son of Daniel not
Connell. Very popular in east Ulster and north midlands.
A great Kerry family and now one of the most numerous names in Ireland.
Often used without the O further north.
Mostly seen in Connacht and related to Conlon and Conlan. Also Quinlan
Related to Connaughton.
Popular along the Cork and Limerick border.
Two strong assemblies of Connollys. In Galway where it is often
spelt Connelly and in Monaghan.
An Oriel name and has still strong links to its homeland of Monaghan,
south Armagh and north Louth.
Son of Connor and an Ulster name.
One of the great clans of Ireland. A number of distinct septs. In
Connacht (one of this branch was the last High King of Ireland),
in Offaly, where the letter O is often omitted, in Kerry and in
north Clare. Often called Connors.
Seen around west Clare.
Also Connoe. Nowadays probably known as Conway. Once very popular
in west Cork.
An Offaly-Laois name sometimes changed to Conroy.
Mostly associated with Connacht and especially Galway. Related to
Conree, Conary and Conry.
A branch of the OBriens and found in Clare.
Associated with south Derry.
A south Armagh name which branched into other Oriel areas of Down
An anglicised form of several Irish names. MacConnmhaigh in Thomand,
MacConmidhe in Tyrone, OConnbhuidhe in Sligo and OConnmhacháin
in Mayo. Conway itself is numerous in Offaly and Laois.
A French family in Kerry-Limerick area. Sometimes used by the OConnors.
Another Oriel clan.
Found mainly in Kilkenny, also Monaghan.
Three different origins. Mostly Scottish in Ulster, English in Leinster
but the MacDhabhocs, a branch of the Burkes in Galway were anglicised
to read MacCooge.
Meaning devotee of St Comhghal and found in Donegal. Sometimes changed
Connected to Colley, MacCawley and Cowley.
Also to the north Clare-south Galway name Kilcooley.
Originated in Sligo, nowadays found in Offaly and north Tipperary.
One of the leading Irish names. Most popular in Clare, Galway and
An influential family who landed on our shores five hundred years
back. Associated with Laois and Cavan (Cootehill).
See Louth and Meath.
Or Corbett which is English. Corbane comes from Ó Corbáin
in Munster or Ó Cairbin in Connacht.
Or Corbett which is English. Corbane comes from Ó Corbáin
in Munster or Ó Cairbin in Connacht.
Sometimes Corby and found in the south midlands of Laois, Offaly
Originating around Slieve Bloom area. Still popular in Offaly and
Chases the family roots back to Fermanagh.
Found in Clare. Disputed English or Spanish origin.
Comes from the Donegal-Sligo-Mayo area.
Found in Tyrone. Related to Corry.
Usually linked to Wexford.
Or Corkhill and associated with Donegal-Derry.
MacCoirleasa and mainly found in Galway.
Changed from Curley and associated with Sligo-Mayo area.
Spelt McCormick in Ulster. Meaning son of Cormac, it is very popular
in Westmeath. The spelling MacCormac is usually of Scottish origin.
Linked to MacCormack. Maps Clare, Roscommon and Galway. Also Down.
Different opinions to origin. Found in north west Ulster. See Tyrone
Connected to Corrigan. Associated with the Shannon Estuary areas
of Kerry and Clare.
Related to the Maguires of Fermanagh. Still linked to this area.
See also Curry, Corrie and Corr. Another branch of the Maguires.
Common in Tyrone.
An old west Monaghan family.
No connection to the Macs. Linked to Cosker in south Leinster. Again
found in Monaghan.
Or Cush. Meaning MacCoise (leg). McCosh is found in Antrim. while
Cush can be seen in east Tyrone and Armagh.
Strange for a Mac to have Norman origins. Gave their name to the
barony of Costello in east Mayo. Still popular in this area. See
On record along Cork and Waterford border.
Related to the Fitzpatricks. See Laois and Kilkenny.
MacCoiter. An old Irish family with a Viking meaning name which
remains numerous in Cork.
Viking connections and linked to Sligo.
An English family long associated with the south east. Ref Ballycotton
A Scottish name found in Down
A leading clan in west Offaly. Still numerous in the Faithful County.
Usually titled Coughlan or Coghlan. Cork remains the homeland.
Found in Down, Derry area. See Colter.
Sometimes linked to Cunningham or Coonan. A Kerry name.
Leading Norman John De Courcy arrived in Ireland in 1177. Prominent
in west Cork where the name still remains sometimes without the
De, often Coursey.
An Oriel name, fairly numerous in the north east.
Norman but sometimes the anglicised version of Cournane and MacCourt.
Originally Kilkenny, now Cork.
Popular in Ulster where it has links to MacCoan, Coyne, MacKeown
Also Cowhey. Connected to Coffey and found in Cork.
One of the tribes of Kilkenny. Often of English origin. See Meath
A variant of MacAuley in Donegal.
Anglicised from MacQuilly and popular in Roscommon area.
An anglicised form of MacAodh (son of Hugh). Mainly found in Derry
MacGiolla Chomhgaill (devotee of St Comgal). Popular in counties
Donegal, Tyrone and Monaghan.
OCadhain meaning wild goose. Connected to Kyne and Kilcoyne.
Numerous in Mayo. Also in Meath and Westmeath.
Connected to MacNaughton and found in Antrim and Derry.
An influential family who arrived from Wales.
Linked to MacCrohan in Kerry and OCreaghan in Mayo.
From the Scottish word crag and very numerous in Ulster.
Often MacCranny, also Crany and Creaney. Down and Armagh names.
As the town of the same name suggests from east Galway.
Somtimes English but more often from the Galway OCrabhain.
Found here and in Roscommon. Also north Louth. Linked to Creavan.
An Ulster name.
Usually titled Crawley and found in Armagh, Down and Louth.
A Scottish name common in Ulster.
Originating in Raphoe, Co. Donegal. Linked to MacConready in Derry.
Found in Clare-Limerick area. Connected to the ONeills.
See also Creaghan and Crehan. Meaning OCroidheáin (heart).
A Donegal sept with links in Sligo. Crehan is popular in Clare-Galway
See Craven, or Creavin.
Or Creedon and associated with Cork.
A variant of MacRuaidhri meaning MacRory and found in Tyrone and
A wing of the powerful MacGuinness clan and found in the Oriel counties,
Fairly widespread often spelt Creegan in Connacht.
Associated with Roscommon
Scottish but sometimes linked to Creaghan and Crehan.
A branch of the MacCarthys and found mostly in Kerry. Often spelt
Linked to Crinion and also counties Kilkenny and Laois.
Found in the north midland counties of Westmeath, Roscommon and
Longford. Also Crinnigan.
A Mayo name.
Linked to Fermanagh, sometimes titled Clifford.
An Oriel family. Possibly related to Crawley. See Down.
Popular in Meath.
Found in east Galway.
English and although family originally settled in Connacht, nowadays
found mostly in Leinster area.
Related to the OSullivans. A west Kerry sept based on the
Connected to Crilly in Oriel counties and Crowley further south.
Or Crombie. Recorded around Newry area. Scottish origin but sometimes
OCromy in Armagh.
An English name seen in parts of east Meath.
A variant of Cronin in Tipperary.
Claims that it is from OCrónmhacháin around
the Youghal area of east Cork.
Or Cronley, recorded in the Offaly area.
From Crón which means brown or dark. An erenagh family from
Gougane Barra on the Cork-Kerry border who have spread their wings
into neighbouring areas of Munster.
Connected to Leitrim.
Sometimes Crosby. An English name but also an anglicisation of MacCrossan.
Seen in Meath.
Once from along Laois-Offaly border but nowadays most popular in
the northern counties like Donegal. Usually spelt Crossan.
Originally a Limerick-Clare sept which migrated to Waterford area.
A variant of Crohan.
Related to MacEnroe and found in Cavan. See also Clare.
OCruadhlaoich, meaning hard (cruadh) while laoch is hero.
A well known Cork name.
Also Croan and found in Roscommon.
MacRodáin is a Donegal name since changed to Rudden in Cavan.
Or Cromley is found in Donegal and Derry.
Has Donegal connections.
Connected to Crean in Roscommon.
Cuidigtheach means helper and Cuddy is a popular Laois-Kilkenny
Linked to MacLoo and MacHugh in Fermanagh and Donegal.
Of different origins. Probably English.
Found in Clare.
An anglicisation of OCathaláin in Limerick. Or Cohalan
Linked to Cullen.
Mac Con Uladh is the hound of Ulster. Spelling MacCulloch is usually
Found in Monaghan but sometimes as MacQuillan or MacCollin.
A very popular name in Wexford, Kilkenny and Carlow.
Both Mac and O and associated with the south east.
Linked to Quilligan and Colgan. Map see Clare also Cavan.
Originally from south west Cork, it is spelt Cullinane in Clare
From codladh (sleep) and a Kerry-west Cork name.
On record in the north east.
A branch of the ORourkes found in Longford-Leitrim area. Sometimes
anglicised to Gray.
Or Conney. Found in Donegal where it is sometimes changed to Quinn.
A Mayo family, sometimes changed to Rabbit in Galway.
Originated in Clare-Limerick and midlands. Still found in Westmeath-Offaly
area and again sometimes changed to Rabbit.
Both Mac and O and a Galway name.
From MacCondarbh (black hound). Associated with Kinniff, MacNiff,
Cudda, MacAdoo, MacEndoo or MacAniff. See Donegal.
From a Scottish family who settled in Donegal and used as an anglicised
version for many Irish names.
See Offaly. The Os are linked to Mayo.
Linked to the Ulster version Turley, Curley is associated with Mayo,
Galway and Roscommon.
Often changed to Courtney. See Kerry.
Originally Tipperary and Waterford. Numerous variants. Linked to
Maddens in Galway. Popular enough in Kerry.
Connected to MacCorry.
Often used with the prefix O and mostly associated with Cork and
An English name common enough in Meath.
A Norman family but Cusack in Clare is of different origin and comes
from the Irish MacIosóg. On record in Cavan.
From Tyrone, linked to Costello and changed to Cosgrave in Monaghan.
Related to Cussen and found in south eastern counties.
From OCosnacháin (defender). Found in Antrim area.
Sometimes without prefix Mac further south they are a branch of
the MacGuires of Breffni.
Found in Galway.
Of Norman extraction sometimes changes to Cousins.
A branch of the Scottish clan MacDonald and found in Ulster.