Victory was for some time on the side of the Moors. The Castilians were defeated at Ecija in 1275, and their leader, the Viceroy Don Nunez de Lara, was killed in battle, as was also Don Sancho, Infante of Aragon and Archbishop of Toledo, after the rout of his army at Martos, near Jaen, on the 21st of October, 1275; and the victorious Yusuf ravaged Christian Spain to the very gates of Seville. In the next year, 1276, the Castilian armies were again twice defeated, in February at Alcoy and in the following July at Lucena. To add to their troubles, King James of Aragon died at Valencia in 1276. Sancho of Castile sought to depose his father Alfonso, at Valladolid. All was in confusion among the Christians; and had it not been for the defection of Yusuf of Morocco, the tide of fortune might have turned in favor of Islam. As it was, the African monarch not only abandoned his cousin of Granada, but he was actually persuaded to send one hundred thousand ducats to his Christian rival at Seville in 1280. The value of this assistance was soon felt. Tarifa was taken in 1292, and the progress of the Moor was checked forever in Southern Spain. Mohammed II. died in 1302, and was succeeded by his son, Mohammed III., who was usually considered by the Moslem historians to have been the ablest monarch of his house. But he reigned for only seven years, and he was unable to defend Gibraltar from the assaults of his Christian rivals. From this time the court of Granada became a sort of city of refuge for the disaffected lords and princes of Castile, who sometimes, but rarely, prevailed upon their Moslem hosts to assist them in expeditions into Christian Spain, but who were always welcomed with true Arab hospitality at the Moslem capital. To record their various intrigues would be a vain and unpleasing task. The general course of history was hardly affected by passing alliances. The Christian pressed on--with ever-increasing territory behind him--on his road to the southern sea. In 1319, Abdul Walid or Ismail I. of Granada defeated and slew Don Pedro and Don Juan, Infantes of Castile, at a place near Granada, still known as the Sierra de los Infantes. But no important consequences followed the victory. In the reign of Yusuf (1333-54) was fought the great battle of the Salado (1340), when the Christians, under Alfonso XI., were completely successful; and the capitulation of Algeciras three years later deprived the Moslems of an important harbor and seaport. Day by day--almost hour by hour--the Christians encroached upon Granada, even while cultivating the political friendship and accepting the private hospitality of the Moslem. Their treacherous intervention reached its climax in 1362, when Peter the Cruel decoyed the King Abu Said, under his royal safe-conduct, to the palace at Seville, and slew him with his own hand.