Cognomen Buchanan (Buchanan 
, ביוקנן 
, Бьюкенен) , all around the world, is a common family name. The last name Buchanan is characteristic of Saint Kitts and Nevis, where it is a common surname, Jamaica, where it is quite a common surname, and Guam (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Canada.
| VARIANT | COUNTRY |
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| Buchanan | Australia, Jamaica, Canada, United States, United Kingdom |
| ביוקנן | Israel |
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george buchanan Scottish historian and humanist scholar; (1506-1582), GB (b. 1506) |
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| margaret buchanan Peerage person ID=700863 (b. 1534) |
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| david buchanan Scottish author (b. 1595) |
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| robert buchanan (born 1658) (b. 1658) |
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| andrew buchanan Scottish merchant and lord provost of Glasgow; 1690-1759 (b. 1690) |
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| barbara buchanan (born 1695) (b. 1695) |
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| james buchanan Scottish merchant (1696-1758) (b. 1696) |
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john buchanan American frontiersman (1759-1832), US (b. 1759) |
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| dugald buchanan Scottish poet (1716-1768), helped translate the New Testament into Scottish Gaelic, GB (b. 1716) |
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claudius buchanan British theologian, GB (b. 1766) |
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| john buchanan (1716-1802) (b. 1716) |
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| john buchanan (b. 1710) |
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| james buchanan of drumpellier Glasgow slave trader (b. 1726) |
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| patrick buchanan (b. 1717) |
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james buchanan president of the United States from 1857 to 1861, US (b. 1791) |
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