Cognomen Debay (Debay 
) , globally, is quite a rare family name. The family name Debay is habitual in Paraguay, where it is quite a rare surname, Belgium, and France. Not in comparison with a country's population, this name is the most popular in France, Ethiopia, and Paraguay. Also, Debay is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Debay | Paraguay, Ethiopia, Belgium, United States, France |
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auguste-hyacinthe debay sculptor (1804-1865), FR (b. 1804) |
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| jean-baptiste joseph debay sculptor from France, FR (b. 1802) |
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| august hyacinthe debay French artist (1804-1865) (b. 1804) |
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| auguste debay (b. 1802) |
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| victor debay FR (b. 1861) |
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yves debay French-Belgian publisher, editor and journalist (1954-2013), FR (b. 1954) |
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lucie debay Belgian actress, FR (b. 1985) |
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| charlotte mollet debay (b. 1960) |
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