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Cognomen Lason (Lason , ละสอน ) , globally, is quite a rare family name. The family name Lason is habitual in Iceland, where it is quite a rare surname, Poland, and Thailand, where it is a rare surname. Not in comparison with a country's population, it is commonest in Poland, Thailand, and the United States. More frequently, Lason is the forename as well as the last name.