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Cognomen Gerona (Gerona , Реувен , Gerunda ) , across the world, is a common surname. The cognomen Gerona is habitual in Philippines, where it is quite a common surname, United Arab Emirates, where it is quite a rare surname, and Uruguay. In absolute terms, it most frequently occurs in Philippines, Spain, and the United States. Very seldom, Gerona is the forename as well as the last name.