Surnames of Irish Origin

4,666 surnames found of Irish origin

Omeara
The surname Omeara is of Irish origin and is derived from the Gaelic name Ó Meadhra, meaning "descendant of Meadhair," with Meadhair being a personal name of uncertain meaning. The name is predomin......
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Omera
The surname Omera is of Irish origin and is derived from the Gaelic name Ó Míodhair, meaning "descendant of Míodhair." The name Míodhair is believed to be derived from the word "miodh" which means ......
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Omey
The surname Omey is of Irish origin and is derived from the Gaelic name "Ó Méith," meaning "descendant of Méith." The name Méith is believed to have been a personal name of uncertain origin. The su......
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Oneail
The surname O'Neil is of Irish origin and is derived from the Gaelic name "Ó Néill," meaning "descendant of Niall." Niall is an ancient Irish personal name that translates to "champion" or "cloud."......
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Oneal
The surname Oneal is of Irish origin and is derived from the Gaelic name "Ó Néill," meaning "descendant of Niall." Niall is an ancient Irish personal name that is believed to mean "champion" or "cl......
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Oneale
The surname O'Neal, also spelled O'Neil or O'Neill, is of Irish origin and is derived from the Gaelic name Ó Néill, meaning "descendant of Niall." Niall is an ancient Irish personal name that means......
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Oneall
The surname Oneall is of Irish origin and is derived from the Gaelic name Ó Néill, meaning "descendant of Niall." Niall is an ancient Irish personal name that is believed to have meant "champion" o......
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Oneel
The surname Oneel is of Irish origin and is derived from the Gaelic name Ó Néill, meaning "descendant of Niall." Niall is an ancient Irish personal name that is believed to have meant "champion" or......
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Oneil
The surname O'Neil is of Irish origin and is derived from the Gaelic name "Ó Néill," meaning "descendant of Niall." Niall is an ancient Irish personal name that translates to "champion" or "cloud."......
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Oneill
The surname O'Neill is of Irish origin and is derived from the Gaelic name "Ó Néill," meaning "descendant of Niall." Niall is an ancient Irish personal name that translates to "champion" or "cloud.......
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Surnames of Irish Origin

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