Surnames of Gaelic Origin

8,379 surnames found of Gaelic origin

Cosgrove
The surname Cosgrove is of Irish origin and is derived from the Gaelic name Mac Coscraigh, meaning "son of Coscrach." The name Coscrach is believed to have originated from the Gaelic word "cos," me......
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Cosh
The surname Cosh is of Scottish origin and is derived from the Gaelic word "cos," meaning "foot." It is believed to have originated as a nickname for someone with a distinctive or peculiar foot, or......
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Coshatt
The surname Coshatt is of Scottish origin and is derived from the Gaelic name Mac Oisdealbhaigh, meaning "son of Oisdealbhach." The name Oisdealbhach is composed of the elements "os," meaning "deer......
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Cosker
The surname Cosker is of Scottish origin and is derived from the Gaelic word "cosgar," meaning "victorious" or "triumphant." It is a descriptive surname that likely originated as a nickname for som......
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Coskey
The surname Coskey is of Irish origin and is derived from the Gaelic name Mac Oisdealbhaigh, meaning "son of Oisdealbhach." The name Oisdealbhach is composed of the elements "os," meaning "deer," a......
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Cossar
The surname Cossar is of Scottish origin and is derived from the Gaelic word "cosair," meaning "pirate" or "corsair." It is believed to have been a nickname given to someone who displayed character......
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Costello
The surname Costello is of Irish origin and is derived from the Gaelic name "Mac Oisdealbhaigh," meaning "son of Oisdealbhach." The name Oisdealbhach is composed of the elements "os," meaning "deer......
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Costelloe
The surname Costelloe is of Irish origin and is derived from the Gaelic name "Mac Oisdealbhaigh," meaning "son of Oisdealbhach." The name Oisdealbhach itself is believed to be derived from the Old ......
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Costigan
The surname Costigan is of Irish origin and is derived from the Gaelic name "Mac Oisdealbhaigh," meaning "son of Oisdealbhach." The name Oisdealbhach is composed of the elements "os," meaning "deer......
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Costine
The surname Costine is of Irish origin and is derived from the Gaelic name Mac Oistin, meaning "son of Austin." The name Austin itself is derived from the Latin name Augustinus, meaning "venerable"......
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Surnames of Gaelic Origin

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