War of the Two Pedros

The War of the Two Peters (Spanish: La Guerra de los Dos Pedros, Catalan: Guerra dels dos Peres), also known as the Castilian–Aragonese War of 1356–1369, was fought from 1356 to 1369 between the crowns of Castile and Aragon. The conflict was a struggle between two claimants to the throne of Castile, Peter of Castile and Peter IV of Aragon.