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Cognomen Shaefer (Shaefer , شايفر) , in the entire world, is a rare family name. The cognomen Shaefer is habitual in Switzerland, where it is a rare surname, the United States, and Georgia, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in the United States, Switzerland, and the United Kingdom. Much less frequently, Shaefer is the forename as well as the last name.