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Cognomen Eidem (يديم , Eidem ) , around the globe, is quite a rare family name. The cognomen Eidem is characteristic of Northern Europe, particularly Norway, where it is quite a common surname, Sweden, where it is quite a rare surname, and Denmark, where it is a rare surname. In absolute terms, it is the most numerous in Norway, the United States, and Sweden. Very seldom, Eidem is the forename as well as the last name.