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Surname Gregh (Gregh , Греш ) , in the world, is a rare family name. The cognomen Gregh is characteristic of Ukraine, where it is a rare surname, Nicaragua, where it is a very rare surname, and France, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Ukraine, France, and Russia. Much less frequently, Gregh is the forename as well as the last name.