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Cognomen Dantonio (D'Antonio , Dantonio ) , in all the world, is a common family name. The surname Dantonio is habitual in San Marino, where it is quite a common surname, Italy, and Luxembourg, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Italy, the United States, and Argentina. Much less frequently, Dantonio is the forename as well as the last name.