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Cognomen Ermen (Ermen , Ермен , Эрмен ) , around the globe, is quite a rare family name. The cognomen Ermen is characteristic of Belgium, where it is quite a rare surname, Nicaragua, and Honduras, where it is a rare surname. Measured by absolute frequency, it is commonest in Turkey, Belgium, and Netherlands. Likewise, Ermen is the forename as well as the last name.