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Surname Breu (Broo
, Breu
, Brouet
) , in all the world, is a common cognomen. The last name Breu is characteristic of Saint Lucia, where it is quite a common surname, Switzerland, and Germany, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in Germany, Indonesia, and France. Much less frequently, Breu is the forename as well as the last name.