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Family name Roberton (Roberton ) , in all the world, is quite a rare cognomen. The cognomen Roberton is characteristic of Isle of Man, where it is quite a rare surname, New Zealand, and Australia, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in the United Kingdom, the United States, and France. Very seldom, Roberton is the forename as well as the last name.