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Cognomen Connon (康农 , Connon , 康侬) , across the world, is quite a rare last name. The cognomen Connon is characteristic of Isle of Man, where it is quite a rare surname, Ireland, and New Zealand. Not in comparison with a country's population, the name is most common in the United Kingdom, the United States, and Ireland. Much less frequently, Connon is the forename as well as the last name.