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Cognomen جلاس (Glass , Jallas , Glasse ) , across the world, is a common family name. The family name جلاس is habitual in Guernsey, where it is quite a common surname, New Zealand, and the United States. In absolute terms, the name is most common in the United States, the United Kingdom, and Germany. Very seldom, جلاس is the forename as well as the last name.