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This article needs to be re-written. It's both confusing and profoundly misleading since the statement as it relates to Paiva having assumed the surname Afonso is true, but he and Joao Afonso de Aveiro were NOT the same person, based on the preponderance of the historical evidence. While it's possible both descended from a common ancestor, they are different people who lived during the same age. I have researched this and could offer a more reasoned interpretation of the story, with footnotes, but am unfamiliar with the labyrinthine editing procedures demanded by Wikipedia. If someone could offer assistance in the form of guidance, I would help.