Surnames of Irish Origin

4,666 surnames found of Irish origin

Fitzsimon
The surname Fitzsimon is of Irish origin and is derived from the Gaelic name Mac Síomóin, meaning "son of Síomón." The name Síomón is the Irish form of the name Simon, which is ultimately derived f......
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Fitzsimonds
The surname Fitzsimonds is of Irish origin and is derived from the Gaelic name Mac Síomóin, meaning "son of Síomón." The prefix "Fitz" is a Norman term meaning "son of," which was often used to den......
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Fitzsimons
The surname Fitzsimons is of Irish origin and is derived from the Gaelic name Mac Síomóin, meaning "son of Síomón." The prefix "Fitz" is a Norman term meaning "son of," which was often used to deno......
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Flahart
The surname Flahart is of Irish origin and is derived from the Gaelic name Ó Flaithheartaigh, which means "descendant of Flaithheartach." The name Flaithheartach is composed of the elements "flaith......
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Flaharty
The surname Flaharty is of Irish origin and is derived from the Gaelic name Ó Flaithbheartaigh, meaning "bright ruler" or "prince of princes." It is a patronymic surname, indicating descent from a ......
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Flahaven
The surname Flahaven is of Irish origin and is derived from the Gaelic name Ó Flaitheamháin, meaning "descendant of Flaitheamhán." Flaitheamhán is a personal name derived from the word "flaith," wh......
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Flaherty
The surname Flaherty is of Irish origin and is derived from the Gaelic name Ó Flaithbheartaigh, meaning "bright ruler" or "prince of princes." It is a patronymic surname, indicating descent from a ......
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Flahive
The surname Flahive is of Irish origin and is derived from the Gaelic name Ó Flaithimh, meaning "descendant of Flaithimh." The name Flaithimh itself is derived from the Gaelic word "flaith," which ......
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Flairty
The surname Flairty is of Irish origin and is derived from the Gaelic name Ó Flaithbheartaigh, which means "bright ruler" or "prince of princes." It is a patronymic surname, indicating descent from......
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Flanagan
The surname 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," which......
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Surnames of Irish Origin

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