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Family name Klaes (Klaes
) , across the world, is quite a rare cognomen. The surname Klaes is characteristic of Western Europe, particularly Germany, where it is quite a rare surname, Luxembourg, and Belgium, where it is a rare surname. In absolute terms, the name is most common in Germany, the United States, and France. Much less frequently, Klaes is the forename as well as the last name.