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Family name Douce (Douce , Dolz , Doux ) , in the world, is a common surname. The cognomen Douce is characteristic of Mauritius, where it is quite a common surname, France, where it is quite a rare surname, and Cameroon. Not in comparison with a country's population, it most frequently occurs in France, Spain, and Algeria. Likewise, Douce is the forename as well as the last name.