Last name Colhoun (Colhoun 
) , around the world, is quite a rare cognomen. The cognomen Colhoun is habitual in Ireland, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and New Zealand. Not in comparison with a country's population, it most frequently occurs in the United Kingdom, the United States, and Ireland.
| VARIANT | COUNTRY |
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| Colhoun | United Kingdom, Australia, Ireland, United States, Canada |
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john e. colhoun American politician (1749-1802), US (b. 1749) |
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| william macdowall colhoun British Member of Parliament (1740–1821) (b. 1740) |
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| samuel colhoun (b. 1787) |
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| edmund colhoun United States Navy admiral, US (b. 1821) |
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| mabel colhoun photographer, teacher and archaeologist (b. 1905) |
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| john colhoun British botanist and plant pathologist (1913-2002), GB (b. 1913) |
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| ossie colhoun Irish cricketer, IE (b. 1938) |
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| william colhoun Peerage person ID=17917 |
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| robert colhoun graduate of NZ Drama School in 1981 |
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| frances colhoun (died 1818) |
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| robert colhoun Peerage person ID=325174 |
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| annie colhoun (died 1956) |
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| florence colhoun Peerage person ID=382946 |
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| robert george colhoun Peerage person ID=382945 |
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| kendrew colhoun researcher |
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