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Family name Demena (Demena
) , around the world, is quite a rare cognomen. The last name Demena is habitual in Ethiopia, where it is quite a rare surname, Angola, where it is a rare surname, and Portugal, where it is a very rare surname. Measured by absolute frequency, the name is most common in Ethiopia, Angola, and Indonesia. More prevalently, Demena is the forename as well as the last name.