The kingdom of Aragon dates from the will of Sancho the Great of Navarre in 1035. The new state was almost insignificantly small at the outset, but, by inheritances, wars with the Moslems, and the peaceful incorporation of Navarre in 1076, it already included a large portion of north central Spain by the close of the eleventh century. The era of great conquests began with Alfonso I “the Battler” (1104-1134), the same king whose marriage with Urraca of Castile had resulted so unfavorably. Better fortune awaited him on the Moslem frontier. In 1118 he captured Saragossa, an event as important in Aragon as was the acquisition of Toledo a few years before in Castile. He carried his campaigns as far south, even, as Murcia and Andalusia, but the principal result of these invasions was that he brought back ten thousand Mozárabes to settle his newly-won conquests. Having no sons he tried to leave his realm to two military orders, but this arrangement did not prove agreeable to his subjects. The nobles of Navarre elected a king of their own, withdrawing from the union with Aragon, while those of Aragon chose a brother of Alfonso, named Ramiro, who at the time of his election was a monk. The reign of Ramiro II “the Monk” (1134-1137) was exceptionally important for Spain, without any particular merit accruing therefor to the king. The pope freed him from his vows and he married. From this marriage there was born a daughter, Petronilla. Ramiro espoused her to Ramón Berenguer IV of Barcelona, and soon abdicated, returning to his monastery. Petronilla’s son, Ramón Berenguer, who presently changed his name to the Aragonese-sounding Alfonso, was the first to rule in his own right over Aragon and Catalonia in what came to be called the kingdom of Aragon, although Catalonia was always the more important part. [Sidenote: The act of vassalage to the pope and the French conquests in Aragonese dominions of southern France.]