AU$293.03
 Casserly, Costelloe, Mac Coistealbh, Mac Costello, Nangle.   The Costello name, and its variations, are of Anglo Norman origins, and have an interesting history. The original name of the clan was deAngulo, or Nangle, and it...
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Coghlan, Cohalan, MacCochláin, MacCoughlan, O' Cochláin.   The two main septs of the name Coughlan are to be found as MacCoughlan in County Offaly and O’ Coughlan of County Cork. Both names are derived from...
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O' Cróinin, Cronin.   The name Cronin is from a diminutive cron meaning ‘swarthy’ or ‘yellow’. The origin of this family name lies in Cork, particularly the West of the County, where place names such as Cooscronin and...
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O' Crowley, O' Cruadhlaoich.   The sept of O’ Crowley began as an offshoot of the McDermott’s in County Roscommon. Branches settled in Dunmanway in County Cork – and are still much identified with that area. Another small...
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This name may be of Gaelic or Norman origin. In Gaelic, Ó Cuillin comes from the word “Cuileann” meaning ‘holly-tree’. The name originated in south-east Leinster, and remains strong there until this day. The Norman name can...
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Coningham, Conyngham, Counihan, Cunnigan, Ó Cuinneagáin.   Cuinneagán comes from the Scots’ Gaelic word “Cuinneag” which means ‘milk-pail’, and was brought to Ireland by Scottish...
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Corran, Corrin, Curran, Currane, Currans, Curreen, Curren, Kirrane, O’ Corren, O’ Corrin, O’ Currane, Ó Corráin.   The Curran name, and its variations, are...
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Mac Isog, MacIosog.   The name Cusack is originally derived from a place in Guienne in France and was first Anglicised as de Cussac, it was introduced into Ireland following the Norman invasion of 1172. Nowadays the name is common in Meath,...
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Dailey, Daily, Daley, Dally, Dawley, O’ Daly, Ó Dálaigh.  The name Daly comes from the Gaelic word “Dálach”, which means ‘one who is present at assemblies’. This word...
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De l’aunaie, Ó Dubhshláine.   The surname Delaney, and its variations, are the Anglicisation of two different surnames, the Gaelic Ó Dubhshláine, and De l’aunaie of Norman origins. The Norman name means...
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O' Dempsey, O Diomasaigh.   The name Dempsey comes from the Irish ‘diomasach’ meaning proud. The O’ Dempsey families were a powerful sept in Counties Laois and Offaly. The families were consistently pro-English in the time of...
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The name Dillon can be of Norman or Irish origins. It is the Anglicisation of the Norman de Leon, and also of the Gaelic Ó Duilleáin. The Dillons have always played a prominent part in Irish history. The family once owned so much land in...
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Docherty, Dorrity, Dougharty, Dougherty, O’ Docherty, O’ Dogherty, Ó Dochartaigh.   The Doghertys originated in Co. Donegal, and their name is one of the oldest hereditary surnames in Ireland today...
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Doolan, Dowlan, Dowlin, Dowling, O’ Dolan, O’ Dowlane, Ó Dubhláin.   The name Dolan is first found in Leinster where they are believed to be descended from Eochaidh, King of Leinster, and...
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Ó Donnnghaile comes from the personal name Donnáil, which is composed of the words “donn” meaning ‘brown’, and “gal” meaning ‘bravery’. The Donnellys are descended from Donnáil O’...
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Dowell, Doyelle, Doyley, McDowell, Ó Dubhghaill.   The Doyles are of Norse origins, and this fact is backed up by the fact that the name is most common in the south east of the country in counties Wicklow, Wexford and...
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Doohey, Dowey, Dowie, Duffey, Duffie, Duhig, O’ Duffy, Ó Dubhthaigh   The name Duffy is an Anglicisation of the Irish Ó Dubhthaigh, from the Gaelic “Dubhthach” meaning ‘the dark one’. There were originally...
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Don, Donn, Donne, Dunn, O’ Doyne, Ó Duinn.   Dunne is a very numerous name and comes from the Gaelic “Donn” meaning ‘brown’. The name was used to describe somebody of swarthy complexion...
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Keegan, Mac Aodhagáin, Mac Egan.   This name originated in the Uí Máine sept territory of Roscommon and east Galway, where the Mac Aodhagáin were hereditary lawyers and judges to the ruling families. Mac...
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Farrely, Frawley, O’ Farrell, O’ Farrely, O’ Ferrall, Ó Fearghaíl.   The modern Farrells, and variations on the name, are descended from the sept of Ó Fearghaíl which was located...