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Cognomen Gillon (吉伦 , 吉隆
, Gillon
) , in the world, is quite a common surname. The family name Gillon is habitual in Western Europe, particularly Belgium, where it is quite a rare surname, Switzerland, and France. In absolute terms, it is the most numerous in France, the United States, and the United Kingdom. Very seldom, Gillon is the forename as well as the last name.