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Last name Mangual (Manus , Mangual ) , in all the world, is a common surname. The cognomen Mangual is characteristic of Puerto Rico, where it is quite a common surname, Oman, where it is quite a rare surname, and Ireland. Measured by absolute frequency, it is commonest in Bangladesh, the United States, and India. Much less frequently, Mangual is the forename as well as the last name.