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Last name Gaille (Gaille ) , around the world, is a rare cognomen. The cognomen Gaille is characteristic of Switzerland, where it is quite a rare surname, France, where it is a rare surname, and Greece, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Switzerland, France, and the United States. Likewise, Gaille is the forename as well as the last name.