Surnames of Irish Origin

4,666 surnames found of Irish origin

Treanor
The surname Treanor is of Irish origin and is derived from the Gaelic name Ó Treanair, meaning "descendant of Treanair." The name Treanair itself is believed to be derived from the word "trean," wh......
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Trehy
The surname Trehy is of Irish origin and is derived from the Gaelic name Ó Treasaigh, meaning "descendant of Treasach." Treasach is a personal name derived from the word "treas," which means "warli......
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Trench
The surname Trench is of English and Irish origin. It is derived from the Old French word "trencher," meaning "to cut," and was originally used as an occupational name for someone who dug trenches ......
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Trolan
The surname Trolan is of Irish origin and is derived from the Gaelic name Ó Troláin, meaning "descendant of Trolán." The name Trolán itself is believed to be a diminutive form of the personal name ......
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Troy
The surname Troy is of Irish origin and is derived from the Gaelic name "Ó Troighthigh," meaning "descendant of Troightheach." The name Troightheach is believed to be derived from the word "troigh,......
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Truskey
The surname Truskey is of Irish origin and is derived from the Gaelic name "Ó Troscáin," meaning "descendant of Troscán." Troscán is a personal name of uncertain meaning, but it is believed to have......
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Tryan
The surname Tryan is of Irish origin and is derived from the Gaelic name Ó Treasaigh, meaning "descendant of Treasach." Treasach is a personal name derived from the word "treasach," which translate......
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Tubridy
The surname Tubridy is of Irish origin and is derived from the Gaelic name "Ó Tuirbhirte," meaning "descendant of Tuirbhirte." The name Tuirbhirte itself is believed to be a personal name derived f......
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Tuffy
The surname Tuffy is of Irish origin and is derived from the Gaelic name "Ó Tuaththaigh," meaning "descendant of Tuathach." The name Tuathach is believed to be derived from the word "tuath," which ......
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Tuite
The surname Tuite is of Irish origin and is derived from the Gaelic name "Ó Tuite," meaning "descendant of Tuite." The name Tuite is believed to have originated from the personal name "Tuite," whic......
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Surnames of Irish Origin

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