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Cognomen Kons (Kons , 康斯 ) , in all the world, is quite a rare family name. The cognomen Kons is characteristic of Estonia, where it is quite a rare surname, Luxembourg, and Latvia, where it is a rare surname. Not in comparison with a country's population, it is commonest in Brazil, Germany, and the United States. Much less frequently, Kons is the forename as well as the last name.