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Family name Doyen (Decem , Doyen , 道恩 ) , in the world, is quite a common cognomen. The last name Doyen is habitual in Western Europe, particularly Belgium, where it is quite a common surname, France, where it is quite a rare surname, and Luxembourg. In absolute terms, it most frequently occurs in France, Belgium, and the United States. Likewise, Doyen is the forename as well as the last name.