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Surname Graven (Graf , Graven , Grav ) , around the world, is a widespread last name. The surname Graven is characteristic of Western Europe, particularly Switzerland, where it is a common surname, Liechtenstein, and Austria (explore the name in all countries). In absolute terms, it most frequently occurs in Germany, Switzerland, and the United States. Much less frequently, Graven is the forename as well as the last name.