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Family name Бертье (Berthier , Бертье ) , all around the world, is a common surname. The family name Бертье is characteristic of Saint Lucia, where it is quite a common surname, Guadeloupe, and France. Measured by absolute frequency, it is the most numerous in France, Brazil, and Benin. Much less frequently, Бертье is the forename as well as the last name.