Surnames of Gaelic Origin

8,379 surnames found of Gaelic origin

Oran
The surname Oran is of Irish origin and is derived from the Gaelic name "Ó Odhráin," meaning "descendant of Odhrán." Odhrán is a personal name derived from the word "odhar," which translates to "du......
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Oregan
The surname Oregan is of Irish origin and is derived from the Gaelic name Ó Riagáin, meaning "descendant of Riagán." Riagán is a personal name derived from the word "riag," which means "impulse" or......
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Oreilley
The surname Oreilley is of Irish origin and is derived from the Gaelic name Ó Raghallaigh, meaning "descendant of Raghallach." The name Raghallach itself is believed to have originated from the wor......
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Oreilly
The surname O'Reilly is of Irish origin and is derived from the Gaelic name Ó Raghallaigh, meaning "descendant of Raghallach." The name Raghallach itself is believed to come from the word "ragh," m......
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Orians
The surname Orians is of English origin and is derived from the personal name "Orian," which itself is a variant of the name "Orrin." The name Orrin is believed to have originated from the Gaelic n......
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Oriel
The surname Oriel is of Irish origin and is derived from the Gaelic name Ó hIoráin, meaning "descendant of Iorán." The name Iorán is believed to be a diminutive form of the personal name Ior, which......
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Orielly
The surname O'Reilly is of Irish origin and is derived from the Gaelic name "Ó Raghallaigh," meaning "descendant of Raghallach." The name Raghallach itself is believed to be derived from the elemen......
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Oriley
The surname O'Riley is of Irish origin and is derived from the Gaelic name Ó Raghallaigh, meaning "descendant of Raghallach." The name Raghallach itself is believed to have originated from the Old ......
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Oriordan
The surname O'Riordan is of Irish origin and is derived from the Gaelic name Ó Riordáin, meaning "descendant of Riordán." The name Riordán itself is a personal name derived from the Old Norse name ......
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Ormon
The surname Ormon is of Irish origin and is derived from the Gaelic name "Ó Ruadháin," meaning "descendant of Ruadhán." The personal name Ruadhán is derived from the word "ruadh," which means "red-......
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Surnames of Gaelic Origin

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