Last name Folly (Folly 
, Folie 
) , globally, is quite a common surname. The surname Folly is characteristic of Sub-Saharan Africa, particularly Togo, where it is quite a common surname, Benin, where it is quite a rare surname, and Ghana. In absolute terms, it is the most numerous in Togo, Brazil, and Ghana. Likewise, Folly is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Folly | Brazil, France, Benin, Ghana, Togo |
| Folie | Italy, France, Nigeria, Ghana, Ethiopia |
Fol, Holgar, Фолли, Фоллы, and เขลากระโทก
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jean folly Swiss politician (1810-1854), CH (b. 1810) |
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| jules folly Swiss engineer (1846-1906), CH (b. 1846) |
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| folly van dam Dutch football player, NL (b. 1945) |
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| folly bah thibault journalist (b. 1950) |
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| jean-christophe folly French actor, FR (b. 1953) |
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| anne-laure folly documentary filmmaker, TG (b. 1954) |
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| martin h. folly (b. 1957) |
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| messan folly researcher (ORCID 0000-0002-8316-6430) |
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| walter sydney dutra folly researcher |
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| arran j folly researcher |
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| william h. folly United States Army Medal of Honor recipient, US |
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| manuella folly Brazilian herpetologist, BR |
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| yoann folly Togolese footballer, FR (b. 1985) |
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| henrique folly |
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| evelize folly |
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