Page "Treaty of Alcáçovas" Paragraph 11

After Henry ’ s IV death ( 1474 ), the Castilian crown was disputed between the half sister of the king, Isabella I of Castile, married with Prince Ferdinand II of Aragon, and the king ’ s daughter, Juana de Trastámara, popularly known as la Beltraneja-because her father was alleged to be Beltrán de La Cueva.