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Cognomen Salau (Salau , Салау ) , throughout the world, is a common last name. The surname Salau is habitual in British Virgin Islands, where it is quite a common surname, Nigeria, and Lesotho, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Nigeria, Niger, and Brazil. Likewise, Salau is the forename as well as the last name.