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Cognomen Fillon (Fillon
, 菲永
, フィヨン
) , all around the world, is quite a common surname. The last name Fillon is habitual in France, where it is quite a rare surname, Bahrain, where it is a rare surname, and Argentina. Not in comparison with a country's population, it is the most numerous in France, Argentina, and Philippines. Very seldom, Fillon is the forename as well as the last name.