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Last name Эрш (Hersch , Эрш ) , across the world, is quite a rare family name. The cognomen Эрш is habitual in Israel, where it is quite a rare surname, Uruguay, where it is a rare surname, and Australia. Not in comparison with a country's population, the name is most common in the United States, Israel, and Germany. Much less frequently, Эрш is the forename as well as the last name.