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Cognomen Enn (Un , Enn , エン ) , in all the world, is a common family name. The cognomen Enn is characteristic of Macao, where it is a common surname, Malaysia, where it is quite a common surname, and Albania, where it is quite a rare surname. In absolute terms, it most frequently occurs in Malaysia, Indonesia, and Macao. Also, Enn is the forename as well as the last name.