Question: Where did Alfonso Xi Of Castile's father die?
Answer: Jaén

During the "Cortes" of Valladolid of 1312, he promoted the reform of the administration of justice, and that of all areas of administration, while attempting to strengthen the royal authority to the detriment of the nobility. He died in Jaén on 7 September 1312 aged 26, and his mortal remains are now in the Royal Collegiate Church of Saint Hippolytus.