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Last name 吉鲁 (吉鲁 , Giroud , Giroux ) , in all the world, is a common cognomen. The last name 吉鲁 is habitual in Canada, where it is quite a common surname, France, and Switzerland. Measured by absolute frequency, it is the most numerous in France, Canada, and the United States. Very seldom, 吉鲁 is the forename as well as the last name.