request permission from James I, taken from
The Cantigas de Santa María After his false start at uniting Aragon with the
Kingdom of Navarre through a scheme of mutual adoption, James turned to the south and the
Balearic Islands in the
Mediterranean Sea. On 5 September 1229, the troops from Aragon, consisting of 155 ships, 1,500 horsemen and 15,000 soldiers, set sail from Tarragona, Salou, and Cambrils, in southern Catalonia, to conquer Majorca from
Abu Yahya, the semi-independent Almohad governor of the island. Although a group of Aragonese knights took part in the campaign because of their obligations to the king, the
conquest of Majorca was mainly a Catalan undertaking, and Catalans would later make up the majority of Majorca's settlers. James conquered
Majorca on 31 December 1229, and
Menorca (1232) and
Ibiza (1235) were later acquired during the reconquest.
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. During his remaining two decades after Corbeil, James warred with the
Moors in
Murcia, on behalf of his son-in-law
Alfonso X of Castile. On 26 March 1244, the two monarchs signed the
Treaty of Almizra to establish their zones of expansion into
Andalusia so as to prevent squabbling between them. Specifically, it defined the borders of the newly created
Kingdom of Valencia. James signed it on that date, but Alfonso did not affirm it until much later. According to the treaty, all lands south of a line from
Biar to
Villajoyosa through
Busot were reserved for Castile. ==Crusade of 1269==