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Cognomen Saydon (Saydon ) , in the entire world, is a rare last name. The surname Saydon is characteristic of Malta, where it is quite a common surname, Israel, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Malta, the United Kingdom, and Turkey. Very seldom, Saydon is the forename as well as the last name.