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Cognomen Геллис (Gellis , Gellys , Guellis ) , all over the world, is a rare family name. The family name Геллис is characteristic of France, where it is a rare surname, the United States, and Switzerland, where it is a very rare surname. Measured by absolute frequency, it is commonest in the United States, France, and Brazil. Very seldom, Геллис is the forename as well as the last name.