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Cognomen Folie (Folly , Folie , Folye ) , throughout the world, is quite a common last name. The surname Folie is habitual in Sub-Saharan Africa, particularly Togo, where it is quite a common surname, Benin, where it is quite a rare surname, and Ghana. Measured by absolute frequency, it is commonest in Togo, Brazil, and Ghana. Also, Folie is the forename as well as the last name.