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Cognomen Блю (Blu , Bleu , Blew ) , all around the world, is a common surname. The surname Блю is characteristic of Guernsey, where it is quite a common surname, Algeria, and Ivory Coast, where it is quite a rare surname. In absolute terms, the name is most common in Algeria, Ethiopia, and Myanmar. Very seldom, Блю is the forename as well as the last name.