Surname Guinness (Guinness 
, 金氏 
, גינס 
) , worldwide, is quite a rare cognomen. The last name Guinness is characteristic of Ireland, where it is quite a common surname, Trinidad and Tobago, where it is quite a rare surname, and New Zealand, where it is a rare surname. In absolute terms, it is commonest in Ireland, the United Kingdom, and the United States. Very seldom, Guinness is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Guinness | Australia, Ireland, United Kingdom, United States, Indonesia |
| 金氏 | China |
| גינס | Israel |
Magennis, Maginnis, Maguiness, Mcguinness, and جينيس
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arthur guinness Irish brewer and the founder of the Guinness brewery business and family (1725–1803), IE (b. 1725) |
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| richard guinness Peerage person ID=301393 (b. 1690) |
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arthur hart guinness Irish brewer, banker, politician and flour miller (1768–1855), IE (b. 1768) |
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| samuel guinness (died 1795) (b. 1727) |
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benjamin guinness British politician (1798-1868), IE (b. 1798) |
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| richard guinness Irish barrister (b. 1755) |
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| mary guinness (born 1759) (b. 1759) |
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| samuel guinness (1761-1826) (b. 1761) |
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| elizabeth guinness (1763-1847) (b. 1763) |
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| hosea guinness (1765-1841) (b. 1765) |
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| edward guinness (1772-1833) (b. 1772) |
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| olivia guinness (born 1775) (b. 1775) |
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| benjamin guinness (1777-1836) (b. 1777) |
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| william lunell guinness (1779-1842) (b. 1779) |
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fanny grattan guinness (1835–1910), evangelist and trainer of missionaries, GB (b. 1831) |
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