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Cognomen Berlay (Berlay ) , worldwide, is a very rare last name. The last name Berlay is characteristic of Latin America and the Caribbean, particularly Argentina, where it is a rare surname, Mexico, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Argentina, Mexico, and the United States. Also, Berlay is the forename as well as the last name.