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Last name Crosnier (Crosnier
) , around the world, is quite a rare surname. The cognomen Crosnier is characteristic of Western Europe, particularly France, where it is quite a rare surname, Belgium, where it is a rare surname, and Switzerland, where it is a very rare surname. Measured by absolute frequency, it is commonest in France, Belgium, and the United States. Very seldom, Crosnier is the forename as well as the last name.