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Cognomen Wansa (วรรษา , Wansa , Ванса ) , throughout the world, is quite a rare last name. The cognomen Wansa is characteristic of Lebanon, where it is quite a rare surname, Sri Lanka, where it is a rare surname, and Kuwait. Measured by absolute frequency, it is commonest in Lebanon, Indonesia, and Sri Lanka. Also, Wansa is the forename as well as the last name.