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Cognomen Liberge (Liberge ) , globally, is quite a rare surname. The cognomen Liberge is habitual in France, where it is quite a rare surname, Canada, where it is a rare surname, and New Zealand, where it is a very rare surname. Measured by absolute frequency, it is commonest in France, the United States, and Canada. Much less frequently, Liberge is the forename as well as the last name.