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Cognomen Ruch (Ruch , 鲁赫 , Руч ) , all around the world, is a common family name. The last name Ruch is characteristic of Switzerland, where it is quite a common surname, Guatemala, where it is quite a rare surname, and Germany. In absolute terms, it is the most numerous in the United States, Germany, and Switzerland. Very seldom, Ruch is the forename as well as the last name.