Aragonese troops support Alfonso de la Cerda's claim to the Castilian throne by invading.

Aragonese troops, led by King James II, crossed into Castile in a bid to support Alfonso de la Cerda's claim to the throne. Alfonso de la Cerda was the grandson of King Alfonso X of Castile and had a legitimate but contested right to the crown. The invasion marked a significant moment in Spanish history as it sparked the War of the Two Peters, a conflict that lasted for several years and resulted in significant political and territorial changes. The war was fought between the forces loyal to Alfonso de la Cerda and those supporting Ferdinand IV, who was the incumbent King of Castile. It ultimately ended in a decisive victory for Ferdinand IV, solidifying his rule over Castile and weakening Aragon's influence in the region. This momentous event highlights the complex dynamics of medieval Spanish politics and the struggle for power that characterized the period. #WaroftheTwoPeters #SpanishMonarchy #MedievalSpain