Surnames of Irish Origin

4,666 surnames found of Irish origin

Okeeffe
The surname O'Keeffe is of Irish origin and is derived from the Gaelic name "Ó Caoimh," meaning "descendant of Caoimh." Caoimh is a personal name that translates to "gentle" or "kind." The O'Keeffe......
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Okelley
The surname Okelley is of Irish origin and is derived from the Gaelic name Ó Ceallaigh, meaning "descendant of Ceallach." Ceallach is a personal name derived from the word "ceall," which means "chu......
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Okelly
The surname Okelly is of Irish origin and is derived from the Gaelic name Ó Ceallaigh, meaning "descendant of Ceallach." Ceallach is a personal name derived from the word "ceall," which means "chur......
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Olan
The surname Olan is of Irish origin and is derived from the Gaelic name Ó Dubhláin, meaning "descendant of Dubhlán." The name Dubhlán is composed of the elements "dubh," meaning "black" or "dark," ......
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Olaughlin
The surname Olaughlin is of Irish origin and is derived from the Gaelic name Ó Lachtnáin, meaning "descendant of Lachtnán." The personal name Lachtnán is derived from the word "lachtna," which mean......
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Oleary
The surname O'Leary is of Irish origin and is derived from the Gaelic name Ó Laoghaire, meaning "descendant of Laoghaire." Laoghaire was a personal name that originated from the Old Irish word "lae......
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Olinn
The surname Olinn is of Irish origin and is derived from the Gaelic name Ó Luain, meaning "descendant of Luan." The name Luan itself is derived from the word "luan," which means "warrior" or "champ......
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Ollom
The surname Ollom is of Scottish origin and is derived from the Gaelic name "Mac Gille Chaluim," meaning "son of the servant of St. Columba." It is a patronymic surname, indicating that it was orig......
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Oloughlin
The surname O'Loughlin is of Irish origin and is derived from the Gaelic name Ó Lachtnáin, meaning "descendant of Lachtnán." The personal name Lachtnán is derived from the word "lachtna," which mea......
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Olwell
The surname Olwell is of Irish origin and is derived from the Gaelic name Ó hAilghe, meaning "descendant of Ailghe." The name Ailghe itself is believed to be derived from the word "ail," meaning "r......
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Surnames of Irish Origin

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