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Last name Peyer (Peyer , 派尔 , Пеер ) , in the world, is quite a rare cognomen. The cognomen Peyer is characteristic of Western Europe, particularly Monaco, where it is quite a common surname, Switzerland, and Austria, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Switzerland, the United States, and Germany. Much less frequently, Peyer is the forename as well as the last name.