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Cognomen Bilana (Bilana ) , around the globe, is a rare surname. The family name Bilana is characteristic of Sub-Saharan Africa, particularly Cameroon, where it is quite a rare surname, South Africa, where it is a rare surname, and Nigeria, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Cameroon, South Africa, and India. Much less frequently, Bilana is the forename as well as the last name.