The co-operation of Christian and Moor continued to the last. In 1270, when Alfonso X had rendered himself unpopular by releasing Portugal from vassalage to Leon, his brother, the Infante Felipe and a number of the more powerful ricosomes conspired against him. Their first thought was to obtain an alliance with Abu Jusuf, King of Morocco, who gladly promised them assistance. The prelates of Castile fanned the flame, hoping in the confusion to gain enlarged privileges. Felipe and his confederates renounced allegiance to Alfonso, in accordance with the fuero, and betook themselves to Granada, committing frightful devastations by the way. Everything promised a disastrous war with the Moors of both sides of the straits, when, through the intervention of Queen Violante, concessions were made to the rebellious nobles and peace was restored.[157] So when, in 1282, Sancho IV revolted against his father and was supported by all the cities except Seville and by all the ricosomes save the Master of Calatrava, and was recognized by the Kings of Granada, Portugal, Aragon and Navarre, Alfonso X in his destitution sent his crown to Abu Jusuf and asked for a loan on it as a pledge. The chivalrous Moslem at once sent him 60,000 doblas and followed this by coming with a large force of horse and foot, whereupon Sancho entered into alliance with Granada and a war ensued with Christians and Moors on both sides, till the death of Alfonso settled the question of the succession.[158] In 1324, Don Juan Manuel was Adelantado de la Frontera; conceiving some cause of quarrel with his cousin, Alfonso XI, he at once entered into an alliance with Granada, then at war with Castile, and in 1333 his turbulence rendered Alfonso unable to prevent the capture of Gibraltar or to recover it when he made the attempt.[159] Pedro the Cruel, in 1366 and again in 1368, had Moorish troops to aid him in his struggles with Henry of Trastamara. In the latter year the King of Granada came to his aid with a force of 87,000 men, and, in the final battle at Montiel, Pedro had 1500 Moorish horsemen in his army.[160] One of the complaints formulated against Henry IV, in 1464, was that he was accompanied by a force of Moors who committed outrages upon Christians.[161]