Surnames of Irish Origin

4,666 surnames found of Irish origin

Odriscoll
The surname O'Driscoll is of Irish origin and is derived from the Gaelic name "Ó hEidirsceóil," meaning "descendant of the messenger." It is a patronymic surname, indicating that it was originally ......
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Odwyer
The surname O'Dwyer is of Irish origin and is derived from the Gaelic name "Ó Dubhuir," meaning "descendant of Dubhuir." The name Dubhuir itself is a combination of the Gaelic words "dubh," meaning......
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Ofallon
The surname O'Fallon is of Irish origin and is derived from the Gaelic name Ó Fallamhain, meaning "descendant of Fallamhan." Fallamhan is believed to be a personal name derived from the word "falla......
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Ofarrell
The surname Ofarrell is of Irish origin and is derived from the Gaelic name Ó Fearghail, which means "man of valor" or "man of courage." It is a patronymic surname, indicating descent from a male a......
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Oferrall
The surname Oferrall is of Irish origin and is derived from the Gaelic name Ó Fearghail, meaning "descendant of Fearghal." Fearghal is a personal name that combines the elements "fear," meaning "ma......
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Oferrell
The surname O'Ferrell is of Irish origin and is derived from the Gaelic name "Ó Fearghail," meaning "man of valor" or "man of courage." The prefix "Ó" indicates "descendant of," while "Fearghail" i......
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Oflaherty
The surname O'Flaherty is of Irish origin and is derived from the Gaelic name Ó Flaithbheartaigh, meaning "descendant of Flaithbheartach." The name Flaithbheartach itself is composed of the element......
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Oflanagan
The surname O'Flanagan is of Irish origin and is derived from the Gaelic name Ó Flannagáin, meaning "descendant of Flannagán." Flannagán is a personal name derived from the Gaelic word "flann," whi......
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Oflynn
The surname O'Flynn is of Irish origin and is derived from the Gaelic name Ó Floinn, meaning "descendant of Flann." Flann is an ancient Irish personal name that translates to "red" or "ruddy." The ......
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Ogara
The surname Ogara is of Irish origin and is derived from the Gaelic word "Ó Gadhra," meaning "descendant of Gadhar." Gadhar is an old personal name that translates to "hound" or "dog." The surname ......
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Surnames of Irish Origin

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