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Family name Brilian (Brilian , Brillant ) , in the world, is quite a common surname. The family name Brilian is habitual in Reunion, where it is quite a common surname, France, where it is quite a rare surname, and Cameroon. In absolute terms, it most frequently occurs in Indonesia, France, and the Democratic Republic of the Congo. Likewise, Brilian is the forename as well as the last name.