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Cognomen וירט (Wirth , Viret , וירט ) , all around the world, is a common family name. The cognomen וירט is characteristic of Liechtenstein, where it is quite a common surname, Switzerland, and Malta (explore the name in all countries). Measured by absolute frequency, it is commonest in Germany, the United States, and Switzerland. Very seldom, וירט is the forename as well as the last name.