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Surname Schwann (شوان , Schwann , 施旺 ) , globally, is quite a rare cognomen. The last name Schwann is habitual in Iraq, where it is quite a rare surname, Austria, where it is a rare surname, and Germany. Measured by absolute frequency, it is the most numerous in Iraq, Germany, and Brazil. More frequently, Schwann is the forename as well as the last name.