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Cognomen Delvaux (Delvaux , Дельво ) , throughout the world, is quite a common surname. The family name Delvaux is characteristic of Western Europe, particularly Belgium, where it is quite a common surname, Luxembourg, and France, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Belgium, France, and the United States. Much less frequently, Delvaux is the forename as well as the last name.