Surname Defoor (Defoor 
) , worldwide, is quite a rare family name. The cognomen Defoor is characteristic of Belgium, where it is quite a rare surname, the United States, where it is a rare surname, and France.
| VARIANT | COUNTRY |
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| Defoor | Canada, Belgium, China, United States, France |
| martin defoor American murder victim (1805-1879) (b. 1805) |
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| joe defoor American tennis player (b. 1963) |
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| mikalyn t defoor researcher |
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| timothy defoor American politician |
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