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Last name Wangen (万根 , Wangen , 晚根 ) , in the world, is quite a rare cognomen. The family name Wangen is habitual in Norway, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and Belgium, where it is a rare surname. Measured by absolute frequency, it is commonest in China, Norway, and the United States. More prevalently, Wangen is the forename as well as the last name.