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Family name 川越 (Kawagoe , 川越 ) , throughout the world, is a rare cognomen. The cognomen 川越 is characteristic of Japan, where it is a rare surname, Brazil, and Singapore, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Brazil, Japan, and China. Also, 川越 is the forename as well as the last name.