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Last name Seweryn (Seweryn , סברין , Северин ) , in the entire world, is a common cognomen. The family name Seweryn is habitual in Eastern Europe, particularly Poland, where it is quite a common surname, Belarus, and Ukraine, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Eastern Europe, particularly Poland, Russia, and Ukraine. Likewise, Seweryn is the forename as well as the last name.