Cognomen Fitzgibbon (Fitzgibbon 
) , all around the world, is quite a common surname. The family name Fitzgibbon is characteristic of New Zealand, where it is quite a common surname, Ireland, and Belize. In absolute terms, the name is most common in the United States, New Zealand, and Ireland.
| VARIANT | COUNTRY |
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| Fitzgibbon | United Kingdom, Ireland, Australia, New Zealand, United States |
| edmund fitzgibbon Irish nobleman of the FitzGerald dynasty (b. 1550) |
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| margaret fitzgibbon (1602-1666) (b. 1602) |
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john fitzgibbon, 1st earl of clare Irish politician, IE (b. 1748) |
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| philip fitzgibbon (b. 1711) |
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james fitzgibbon British Army officer, IE (b. 1780) |
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| elizabeth fitzgibbon British aristocrat (1736-1807) (b. 1736) |
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| eleanor fitzgibbon (born 1738) (b. 1738) |
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john fitzgibbon, 2nd earl of clare British noble (b. 1792) |
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richard fitzgibbon British Member of Parliament (1793-1864), GB (b. 1793) |
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abraham fitzgibbon engineer (1823-1887), IE (b. 1823) |
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| lady isabella mary anne fitzgibbon (born 1787) (b. 1787) |
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gerald fitzgibbon Irish barrister and judge (b. 1837) |
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| lady louisa fitzgibbon (born 1790) (b. 1790) |
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| gerald fitzgibbon Irish writer and lawyer (b. 1793) |
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| lady isabella fitzgibbon (1795-1795) (b. 1795) |
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