Family name Guillet (Guillet 
) , in the entire world, is a common last name. The family name Guillet is characteristic of France, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Canada. Measured by absolute frequency, it most frequently occurs in France, the United States, and Switzerland. Very seldom, Guillet is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Guillet | Switzerland, France, Canada, United States, Argentina |
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charles guillet BE (b. 1575) |
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| georges guillet de saint-george French actor, FR (b. 1624) |
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| mathurin guillet CA (b. 1628) |
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| jeanne guillet (b. 1652) |
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| marie elisabeth guillet 22 Aug 1694 Batiscan, Québec - 16 Dec 1783 Verchéres, Québec (b. 1694) |
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| paul guillet (b. 1750) |
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| urbain guillet (1764-1817), FR (b. 1764) |
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| benoît guillet (b. 1759) |
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| jean françois guillet French painter, FR (b. 1772) |
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| pierre-joseph guillet FR (b. 1765) |
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| charles guillet French magistrate, FR (b. 1776) |
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adolphe guillet dit tourangeau Canadian politician, CA (b. 1831) |
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| louis guillet Canadian politician, CA (b. 1788) |
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george guillet Canadian politician, CA (b. 1840) |
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| valère guillet Canadian politician, CA (b. 1796) |
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