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Surname Guelmer (Guelmer , Гельмер ) , throughout the world, is a rare family name. The last name Guelmer is habitual in Kazakhstan, where it is a rare surname, Belarus, where it is a very rare surname, and Kyrgyzstan. In absolute terms, it is the most numerous in Kazakhstan, Russia, and Belarus. Also, Guelmer is the forename as well as the last name.