Valencia capitulated to Aragonese rule on 28 September 1238, following an extensive campaign that included the Siege of Burriana and the decisive Battle of the Puig, where the Aragonese commander, Bernat Guillem I d'Entença, who was also the king's cousin, died from wounds received in action. Chroniclers say James used gunpowder in the siege of Museros castle.
Valencia capitulated to Aragonese rule on 28 September 1238, following an extensive campaign that included the Siege of Burriana and. the decisive Battle of the Puig, where the Aragonese commander, Bernat Guillem I d'Entença, who was also the king's cousin, died from wounds received in action Chroniclers say James used gunpowder in the siege of Museros castle.