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Family name Guion (Guion , 盖恩 , Guionista) , around the globe, is quite a rare surname. The surname Guion is habitual in France, where it is quite a rare surname, Luxembourg, and Philippines. Not in comparison with a country's population, the name is most common in France, Philippines, and the United States. Very seldom, Guion is the forename as well as the last name.