Cognomen Deweer (Deweer 
) , across the world, is quite a rare family name. The surname Deweer is habitual in Belgium, where it is quite a rare surname, Madagascar, and France, where it is a rare surname.
| VARIANT | COUNTRY |
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| Deweer | France, United States, United Kingdom, Belgium, Madagascar |
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roger deweer Belgian athletics competitor, BE (b. 1932) |
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| jean-pierre deweer Belgian politician (1923-2013), BE (b. 1923) |
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jochen deweer Belgian bicycle racer, BE (b. 1991) |
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| koen deweer director of Konekt, BE |
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| augusta deweer Righteous Among the Nations, BE |
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| gommaire deweer BE |
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| marina deweer BE |
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| françois deweer |
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| dries deweer BE (b. 1986) |
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Mr, Paul, Roos, Rudi, Rudy, Dirk, Greg, Grã, Lien, Lies, Joel, Jean, Tuur, Eddy, Eric, Emma, Hugo, Yoko, Yves, Maria, Marie, Serge, Koen, Stijn, Bram, Bart, Ms, Jo, Mik, Ann, Ben, Kim, Rã, Leo, Luc, Jan, Tim, Eva, Wim, Zoe, Marc, Maud, Sven, Anne, Arne, Auke, Axel, Bert, and Alain