Cognomen Doussain (Doussain 
) , all over the world, is a rare family name. The surname Doussain is habitual in France, where it is a rare surname, Germany, where it is an extremely rare surname, and Brazil.
| VARIANT | COUNTRY |
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| Doussain | Germany, France, Brazil |
| jean-jacques doussain French politician, FR (b. 1753) |
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| jean-andré doussain Roman Catholic bishop (b. 1756) |
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| jean-jacques doussain FR (b. 1753) |
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gustave doussain French politician, FR (b. 1872) |
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jean-marc doussain French rugby union player, FR (b. 1991) |
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| jean doussain French politician, FR (b. 1959) |
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Marc, Patrick, Thierry, Marilyne, Caroline, Bertrand, Raphaël, Laurence, Isabelle, Christian, Christine, Catherine, Guillaume, Jean-Marc, Veronique, Stéphanie, Jean Hugues, Francielle, Chantal, Jean-Hugues, Anthony, Jordan, Coco, Jean, Elie, Eric, Yves, Annie, Cathy, Kenny, David, Julie, Teddy, Willy, Wendy, Marcel, Adrien, Charly, Pierre, Xavier, and Marie-Dominique