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Cognomen Crosier (Crux , Crosier ) , all over the world, is quite a rare last name. The family name Crosier is habitual in Isle of Man, where it is quite a rare surname, El Salvador, and the Dominican Republic, where it is a rare surname. In absolute terms, it is the most numerous in the United States, the United Kingdom, and Canada. Very seldom, Crosier is the forename as well as the last name.