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Last name Lubian (Lubian , Lubián , Лубьян ) , throughout the world, is quite a rare cognomen. The cognomen Lubian is habitual in Paraguay, where it is quite a rare surname, Italy, where it is a rare surname, and Spain. Measured by absolute frequency, it most frequently occurs in Brazil, Philippines, and Paraguay. Also, Lubian is the forename as well as the last name.