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Cognomen Gangbo (刚波 , Gangbo ) , in all the world, is a rare last name. The cognomen Gangbo is characteristic of Benin, where it is quite a rare surname, France, where it is a very rare surname, and China. Not in comparison with a country's population, it most frequently occurs in Benin, China, and Nigeria. More prevalently, Gangbo is the forename as well as the last name.