When the infants of Aragón, fortified in the castle of Montánchez, rebelled against the Crown in 1429, after several attempts to reclaim it, it was Álvaro de Luna who finally recovered it for King John II. When it became the scene of the Beltraneja conflict, Alfonso de Monroy, Master of Alcántara, took control of the castle, and after a long siege that lasted for years, the Crown was not able to recover it until the peace treaty was signed in 1477.