A Sligo sept often changed to Conway or Convey. Related to OHara.
An important Derry-Tyrone family prior to the Ulster Plantation.
Still numerous in this part of Ulster.
Found in Cavan and north Meath. Sometimes anglicised to Tighe.
A well known Wexford family.
Not connected to the above. Rather MacCavanna, Keaveney or Keevan.
Scottish and thus north eastern counties. However, sometimes a
close relation of the Irish MacHugh.
Originating in Laois and linked to then OMoores of that
county. Nowadays a Galway name.
An Ulster name, with many different relatives like MacCague or
Or Keelaghan and Kelaghan. An Oriel name where it has often become
Callaghan. See also Westmeath-Offaly area.
Or Keeley. An anglicised version of a number of Irish families.
Like OCaolloidhe meaning Quelly, OCadhla (Kiely) or
OCeile, a Meath-Louth family where the name still remains
A Scottish name found in Derry and Donegal. However the anglicisation
of Muckian in Monaghan.
A west Clare family.
A popular south Munster name. See Cork, Kerry, Waterford. Linked
to Kane, Keaney or Keany, which is seen in north Cavan, Leitrim
With the Mac usually an Ulster name.
Carney in Clare and Mayo. One branch O Catharnaigh were a leading
Meath family where the name was often anglicised to Fox. The head
of their branch was nicknamed so.
Found in Wicklow.
A Monaghan name.
Or Keery. Related to the ONeills and anglicised to Carey
in the north midlands.
An Anglo Norman family who intermingled well and became known
as Céitinn. Fairly widespread.
Found in large numbers in Connacht counties. Connected to Keevanagh.
Seen in Clare and Galway.
A branch of the Scottish clan MacDonald and found in Ulster.
Or Keadian. Linked to MacCadden. Seen in Roscommon.
In Donegal as Kee. An anglicised form of MacAoidh. Bearers in
the north east would usually be of Scottish extraction and linked
From caomh which means gentle. A very popular Cork name. Originally
east Cork and producing kings of Munster, the clan were pushed
back to the western edges of Cork.
Appears in a number of different areas most notably the north
eastern Connacht counties of Roscommon, Leitrim. Also Longford
A Clare name.
Seen in Meath and Monaghan.
On record in Westmeath, Offaly and Meath.
Or Kinahan. In Ulster associated with Cunningham while Keenahan
itself belongs to west Offaly.
A Fermanagh family who worked for the Maguires. In the midland
counties of Offaly, Galway and Westmeath, it comes from Kinahan.
Seen in east Clare and adjoining parts of Tipperary and Offaly.
Or Kevane as it is spelt in Kerry. A Cork-Kerry name often changed
to Kavanagh. Another sept settled in Sligo-north Mayo area.
MacIomhair in Irish and a Viking name. Seen in large numbers in
Derry and neighbouring counties of Tyrone and Armagh.
Or Keagney, a Tyrone-Fermanagh name.
Very much a Cork name, often changed to Coakley.
Or Keher. Recorded in Tipperary and Roscommon.
Or Keogh. Three different branches, south Tipperary, south Roscommon
and in the Wicklow-Wexford area where Kehoe is quite common.
An east Galway family often changed to Kerrigan.
From Galway. Anglicised to read Kehery and Keaghry which in turn
mostly became Carey.
An east Galway name connected to the Ulster Mac Keague.
Or Kiersey. Norman and found in Waterford.
Seen mostly in north eastern counties. Connected to MacKillan
A Louth name.
Originally from the Clare area but following migration are now
based in Cork-Kerry sector.
English families who settled in north Meath and east Cavan.
No connection to any of the towns of this name. Seen mostly in
From OCeallaigh. A great Galway name but quite common in
other parts. Second most numerous name in Ireland.
A Donegal sept.
English and mostly recorded in Dublin and Belfast.
Seen in Louth.
Norman origin and with prefix Mac in Ulster. Connected to such
as Kenrick and Condrick.
A Clare-Galway name.
Or Kennealy. Numerous enough in north Kerry and west Limerick.
Welsh origins and nowadays associated with Cork.
Or Kinnarney. A form of MacInerney found in the Offaly area.
Found in north Tipperary.
Associated with the ONeills and north Monaghan is their
homeland. Spread to most sectors of the country.
A long connection with Ardee in Louth. Linked to Kinnane and the
Sometimes Scottish who themselves were of Irish extraction. However,
the vast majority of the sept first came to prominence in east
Clare, moving to other parts of Munster and further afield.
South Munster, linked to Quinnelly, Kinnealy and Connelly.
The vast majority of this clan are from the east Galway-Roscommon
An English family who arrived 700 years past. See Sligo area.
English but sometimes the anglicised form of MacCoinín
(Cunneen). Also connected to Kenning and Keenan.
Scottish and found in north eastern corner.
A Cavan, north Meath name.
Or Kohane. A west Cork-east Kerry name.
Or Keown. Various branches and numerous variants and synonyms.
See Connacht counties of Galway, Mayo and Sligo. Also north Louth.
Or Kirby. Mostly the latter and from ciar which means black or
dark brown. Can be seen in southern counties of Kilkenny, Waterford,
Cork and Limerick. Also Mayo.
Connected to Kirwan in Laois-Kilkenny area.
Or Kerins and Kieran. Again from the Irish ciar (black or dark
brown). Often anglicised Kearns. Common in Louth-Monaghan border
area. Also in Mayo, Sligo, Fermanagh and east Cork.
Seen in Armagh and north Louth. Connected to Curley and Carley.
A variant of Carolan and seen in Derry, Donegal and Tyrone.
From cearnach which means victorious. See Armagh and Antrim.
A variant of Kiernan which crops up in south Ulster areas of Cavan,
Fermanagh, Monaghan and Armagh.
Popular in northern counties. Mostly Scottish but sometimes meaning
the same as Carr and Kerin in Donegal.
Or Kirrane. On record in western seaboard counties of Mayo and
From OCiaragáin. Ciar means black or dark brown.
A Mayo-north Galway sept.
Seen in Kerry. Connected to Healy. Spelt Kierse in Clare.
A west Clare name.
Norse. See Dublin and Louth.
Or Kitterick. Viking extraction. Seen in Armagh, Down areas.
A Monaghan, Armagh, north Louth family.
English but sometimes used for the Irish MacKee.
Usually linked to Down and Antrim.
English and glorified by the exploits of Mullinahones CJ Kickham.
Connected to Duane. See Cork.
Linked to such as Quilty and Keelty. Mostly found in west Munster
i.e. Limerick and Clare.
Locations include Waterford, Tipperary and Limerick.
Frequently with the Mac. A popular Cavan, Leitrim clan. Same as
MacTiernan. From the Irish MacThighearnáin. Tighearna means
Or Kiggan. On record in Galway.
MacGiolla Bhain. Bán means white. Usually associated with
Sligo and north Mayo.
From MacGiolla Bhrighde or a devotee of St Brigids. A Roscommon,
north Galway, Mayo name. Connected to Mac Bride.
Seen in Sligo.
Usually identified with Sligo and north Roscommon.
A Roscommon clan nowadays often changed to Cline or Clynes.
Meaning devotee of St. Comon. An east Galway south Roscommon name.
On record in Clare and Galway. Sometimes changed to Cooley.
A Sligo, Mayo and Galway sept and often shortened to Coyne.
Spelt so in Sligo. In Mayo Kilgallen is quite popular.
Found in Clare.
Anglicised to such as MacElduff, MacIlduff, Gilduff and Duff.
A Sligo family, sometimes changed to Dunn.
Or Kilfeather. From MacGiolla Pheadaoir which means a devotee
of St. Peter. A Sligo name.
Another Sligo name. Connected to Gannon.
A Donegal sept.
Or Killikelly. Connected to the OFlahertys. Sometimes changed
to Kelly. See Galway.
Nothing to do with town of same name. Seen in Galway and linked
to Donegal clans MacElhinney and MacIlhenny.
A Derry name. Connected to Gilkie, and the southern Kielty and
Or Kellahy. A rare midland name seen where counties Tipperary,
Offaly and Galway meet.
A Mayo sept from where it migrated to Galway and Offaly.
Originally a Gallowglass family hired by the ODonnells.
Found in Armagh, Monaghan and north Louth.
A Sligo sept connected to the ODonnells.
A Clare-Galway version of Killeen. Became Killion in Roscommon
A rare Westmeath name.
Galway is its homeland.
A branch of the Scottish MacDonalds and popular in Antrim.
Like a number commencing with Kil, a Sligo family. Spread to Roscommon
where it is often spelt Gilloran.
From the Scottish MacKelloch and seen in Ulster.
A west Clare name.
A Mayo family.
A branch of the Tyrone ONeills. In the northern sector it
remained Gilmartin. Found in the Connacht counties of Mayo, Sligo,
Roscommon and Galway.
A Sligo form of Gilmore.
Found in Offaly.
A form of Fitzpatrick seen in Ulster.
Another Sligo sept.
Seen in Sligo and Roscommon.
Or Kinagan and Kinningham. Seen in Louth and south Ulster.
Scottish and subsequently on record in northern counties, especially
Antrim and Derry.
Seen in Wicklow and Wexford.
Linked to the ONeills. Mostly changed to Connellan. See
Westmeath and Meath.
English but usually the anglicisation of such as Conroy, Conry,
Conree, MacAree, MacKeary, MacKinn or Gilroy.
An English family who settled in west Cork and where the name
has become numerous.
Or Kinlay. Usually Scottish but occasionally from the Irish MacAlee.
Scottish and often spelt Kinlough.
Seen in north Tipperary and south Offaly.
A north Tipperary name. Related to Quinane, Guinane and Ginnane.
An Offaly version of McInerney.
Seen in Clare.
Or Kinneavy. A Galway name, nowadays often changed to Forde. Kinnawe
is linked to McKenna in Kerry.
In Ulster of Scottish extraction, further south the anglicisation
of such as MacInnire and MacEnir.
Sometimes Scottish from the Mac Kinnon and Mac Kenzies clans but
mostly an Irish sept who can trace their origins back to the Tyrone-Fermanagh
A great north Wexford family who use neither the prefix O or Mac.
Scottish and Ulster.
Or Kirke. In northern counties of British extraction. In Munster
it comes from Quirke.
One of the Tribes of Galway. From O Ciardubhaín, ciar dubh
A Kerry, Cork name but changed to Cashman in the latter.
Clare holders of the name were originally Ó Ceit.
Norse origin and linked to MacKetterick and MacKetrick. Seen in
north eastern counties.
Found in north western counties of Sligo and Leitrim.
Both Irish and Scottish origin. See south Armagh, south Down area.
A Scottish family who arrived in Derry during the Plantation.
Seen in Connacht, related to Coyne.