Cognomen Coyet (Coyet 
) , all around the world, is a rare surname. The cognomen Coyet is characteristic of Sweden, where it is a rare surname, Belgium, where it is a very rare surname, and France. Very seldom, Coyet is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Coyet | Belgium, France, Sweden, United States |
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frederick coyett Swedish noble who served as a Dutch colonial administrator, SE (b. 1615) |
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| anna giliesdotter coyet SE (b. 1585) |
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| peter julius coyet Swedish diplomat, SE (b. 1618) |
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sten coyet Swedish politician, SE (b. 1688) |
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| wilhelm julius coyet Swedish judge, SE (b. 1647) |
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| baltzar fredrik coyet Dutch colonial governor, NL (b. 1650) |
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maria elisabeth coyet wife of Jacob Ludvig Maclean, SE (b. 1716) |
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| elisabeth coyet (b. 1661) |
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| gustaf wilhelm coyet SE (b. 1678) |
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| axel julius coyet wife of Hedvig Charlotta Cronhielm, SE (b. 1692) |
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| fredrik julius coyet (b. 1684) |
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carl fredrik coyet Swedish military personnel, SE (b. 1768) |
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| vilhelmina eleonora coyet Swedish noble, SE (b. 1719) |
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| henric gideon coyet Swedish politician, SE (b. 1725) |
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gustaf august coyet SE (b. 1809) |
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