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Dempsey is a surname of Irish origin.
Irish clans are traditional kinship groups sharing a common surname and heritage and existing in a lineage-based society, originating prior to the 17th century. A clan included the chief and his patrilineal relatives; however, Irish clans also included unrelated clients of the chief.
Horan is a surname that originated in County Galway, Ireland, and from there spread into County Mayo. According to historian C. Thomas Cairney, the O'Horans were one of the chiefly families of the Uí Mháine who in turn were a tribe of the Dumnonii or Laigin who were the third wave of Celts to settle in Ireland during the first century BC.
Dinneen is an Irish surname. The family was famous for having supplied generations of court poets to their overlords in the ancient kingdom of Corcu Loígde. According to historian C. Thomas Cairney, the O'Dinneens were a chiefly family of the Corca Laoghdne who in turn came from the Erainn tribe who were the second wave of Celts who settled in Ireland from 500 to 100 BC. The Uí Duinnín were then hereditary historians to the MacCarthy Mór.
Heffernan is an Irish surname derived from the Gaelic Ó hIfearnáin, which comes from the byname Ifearnán literally meaning 'little demon' or more metaphorically 'daredevil'. Heffernan gives rise to alternatives such as Heffernon and Hefferan. The name sometimes contains the O' prefix. According to historian C. Thomas Cairney, the O'Heffermans were the chiefly family of the Uaithni who were a tribe of the Erainn who were the second wave of Celts to settle in Ireland between about 500 and 100 BC.
Mac Conmara is an Irish surname of a family of County Clare in Ireland. According to historian C. Thomas Cairney, the MacNamaras were one of the chiefly families of the Dal gCais or Dalcassians who were a tribe of the Erainn who were the second wave of Celts to settle in Ireland between about 500 and 100 BC.
O’Riordan is a surname of Irish origin. According to historian C. Thomas Cairney, the O'Riordans were one of the chiefly families of the Éile tribe who in turn came from the Dumnonii or Laigin who were the third wave of Celts to settle in Ireland during the first century BC.
O'Flanagan is an Irish surname.
O'Casey is a common variation of the Gaelic cathasaigh, meaning vigilant or watchful, with the added anglicized prefix O' of the Gaelic Ó, meaning grandson or descendant. At least six different septs used this name, primarily in the Counties of Cork and Dublin.
O'Hea may refer to:
The O'Grady family, also styled O'Grady of Kilballyowen, is one of Ireland's noble families and surviving Chiefs of the Name. Their title is The O'Grady in English and Ó Gráda in Irish.
The O'Byrne family is an Irish clann that descend from Bran mac Máelmórda, King of Leinster, of the Uí Faelain of the Uí Dúnlainge. Before the Norman invasion of Ireland they began to colonise south Wicklow. There are many famous people with this Irish last name. This includes Anna O’Byrne, an Australian singer and actress, and Anna Marie O’Byrne, an American model.
Ó Gadhra or O'Gara is an Irish surname which originated in the kingdom of Luighne Connacht. Variants include Garry, Geary, Gerry, and Guiry.
Ó hÍceadha is a surname of Irish origin. According to historian C. Thomas Cairney, the O'Hickeys were one of the chiefly families of the Dal gCais or Dalcassians who were a tribe of the Erainn who were the second wave of Celts to settle in Ireland between about 500 and 100 BC.
Ó Meadhra is a Gaelic-Irish surname. According to historian C. Thomas Cairney, the O'Mearas were one of the chiefly families of the Dal gCais or Dalcassians who were a tribe of the Erainn who were the second wave of Celts to settle in Ireland between about 500 and 100 BC.
Ó Maoilriain is an Irish Gaelic clan based in what is today County Tipperary and County Limerick. The clan claims descent from Cathair Mór of the Laighin, but they first appear in the historical record in the 15th century in the kingdom of Thomond. John O'Donovan claims they are distinct from the Ryan clan which ruled Uí Dróna in what is today County Carlow.
Hennessey is an Irish surname, being the anglicised form of Ó hAonghusa. Families of this name were found in Kingdom of Uí Failghe and Kingdom of Desmond. Notable people with the surname include:
The surname O'Loughlin is an Anglicised form of the Irish Ó Lochlainn meaning "descendant of Lochlann". According to historian C. Thomas Cairney, the O'Loughlins were a chiefly family of the Corco Modhruadh tribe who in turn came from the Erainn tribe who were the second wave of Celts to settle in Ireland from about 500 to 100 BC.
O'Kelly is an Irish surname and the name of a number of distinct sept families in Ireland. The most prominent of these is the O'Kelly sept who were the chiefly family of the Uí Maine in Connacht. Another sept is that of the kingdom of Brega, descended from the Uí Néill. A more minor sept of O'Kelly was that descended from the Uí Máil; this sept is referred to in Irish as the Uí Ceallaig Cualann, in reference to the region of their origin, Cualu.
Holohan is a surname of Irish Gaelic origin, from the Irish uallach meaning "proud".
References
- ↑ Cairney, C. Thomas (1989). Clans and Families of Ireland and Scotland. Jefferson, North Carolina, United States, and London: McFarland & Company. pp. 61–64. ISBN 0899503624.
- ↑ Cairney (1989). pp. 78-83.
- "Irish Ancestors/ Surnames". irishtimes.com. Retrieved 16 January 2014.
- "Irish Family Names - Hennessy". irelandseye.com. Retrieved 16 January 2014.
- "Hennessy Coat of Arms / Hennessy Family Crest". 4crests.com. Retrieved 16 January 2014.
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