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Surname ตรีวรรณ (ตรีวรรณ , Treewan , Threerawan ) , in all the world, is a very rare cognomen. The last name ตรีวรรณ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ตรีวรรณ is the forename as well as the last name.