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Family name Filson (Filson , Фильсон ) , around the world, is quite a rare surname. The cognomen Filson is characteristic of Ghana, where it is quite a rare surname, the United States, where it is a rare surname, and Angola. Not in comparison with a country's population, it is the most numerous in the United States, Ghana, and the United Kingdom. Much less frequently, Filson is the forename as well as the last name.