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Cognomen Quesnay (Quesnay , Кенэ , كيناي) , in the world, is a rare family name. The cognomen Quesnay is habitual in Peru, where it is a rare surname, France, and the United Kingdom, where it is a very rare surname. Measured by absolute frequency, it is commonest in France, Peru, and the United States. Likewise, Quesnay is the forename as well as the last name.