Pressured by these dangers, he proposed vassalage to Castile, sending his son as an emissary to Burgos.
[3] The treaty was signed in April 1243 at the Sanctuary of Cortes in the Castilian town of Alcaraz,[4] in the context of internal instability within the Hudid Emirate of Murcia following the death of Ibn Hud al-Mutawakkil in 1238.
Lorca and Mula were conquered in 1244,[6] while Cartagena fell to Alfonso in the spring of 1245,[7] with naval assistance from a fleet from the Cantabrian coast.
[8] Christians became a majority within the city as immigrants came from all parts of Iberia with Muslims confined to the suburb of Arrixaca.
The Mudéjar revolt of 1264-1266 in the Kingdom of Murcia effectively nullified any obligations that King Alfonso X "the Wise" had to honor the treaty's terms.