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Cognomen Kefas (Kefas ) , globally, is a common family name. The last name Kefas is habitual in Sub-Saharan Africa, particularly Namibia, where it is quite a common surname, Nigeria, where it is quite a rare surname, and Botswana. Measured by absolute frequency, it is the most numerous in Nigeria, Indonesia, and Namibia. Also, Kefas is the forename as well as the last name.