Afonso III, or Affonso (Archaic Portuguese), Alfonso or Alphonso or Alphonsus, the Bolognian, the fifth King of Portugal and the first to use the title King of Portugal and the Algarve, since 1249. He was the second son of King Afonso II of Portugal and his wife, Urraca, princess of Castile; he succeeded his brother, King Sancho II of Portugal, who was removed from the throne, on 4 January 1248.
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