Another rallying-point of the Reconquest was Aragón; the other two, Navarre and Catalonia, were placed by the circumstances of their origin in peculiar relations with France. The Basques on either side of the Western Pyrenees dissatisfied with Frankish rule, rebelled on several occasions. At Roncevaux they annihilated the forces of Charlemagne, and in 824 another victory secured the independence of the Basques of Pamplona. The names and dates of their kings, or chieftains, are very uncertain until we come to Sancho II, Abarca. He abdicated in favour of his son, García II, the Trembler, in whose time the Leónese and Navarrese together were routed at Valdejunquera. Sancho III, the Great, was one of the monarchs who most influenced Spanish history; he was eventually King of Navarre, Castile, Aragón, and Sobrarbe. At his death (1035) he divided his kingdoms, giving Navarre to his eldest son García, Castile, with the title of King, to Fernando, Aragón to Ramiro, and Sobrarbe to Gonzálo. This fashion of regarding the various states as patrimonial possessions – an idea borrowed from French feudalism, and previously unknown in the Spanish kingdoms – was introduced at this time; it resulted in the numerous divisions which led to so many wars and which long formed an obstacle to the unity of the Reconquest in the West.