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Cognomen Khamphaen (Khamphaen
) , all over the world, is a very rare family name. The surname Khamphaen is characteristic of Singapore, where it is a rare surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Khamphaen is the forename as well as the last name.
Saowalak, Kriangkrai, Phommathet, Thanatchaya, and Krittiyaporn