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Cognomen D'Aquin (D'Aquin , ダカン) , worldwide, is a rare surname. The cognomen D'Aquin is habitual in Cameroon, where it is a rare surname, Chile, and France, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Cameroon, the United States, and Chile. Very seldom, D'Aquin is the forename as well as the last name.