The Siege of Bayonne was launched Process_start by Alfonso the Battler , King of Aragon and Navarre , apparently against the Duke of Aquitaine , William X , and lasted Process_end from October 1130 to October 1131 .

Urraca 's second , childless marriage Forming_relationships was to Alfonso the Battler .

With the death of Urraca , Alfonso VII , her son by an earlier marriage Forming_relationships , succeeded to her position as primary rival of Alfonso the Battler for the rule of these two kingdoms .

In besieging Besieging Bayonne , Alfonso the Battler was perhaps hoping to persuade the Count of Toulouse to switch Change allegiance to him and aid Assistance him in his war in Castile .

The former records how Pedro González de Lara , after he was captured Conquering by Alfonso VII for his part in the rebellion , joined Becoming_a_member the siege of Bayonne `` in order to bring him [ Alfonso the Battler ] back to Castile '' ( `` ut reducere eum in Castellam '' ) because he wanted `` to wage war in Castile '' ( `` facere bellum in Castella '' ) , that is , continue the revolt .

The siege dragged on Change_event_time , however , and during his year-long absence from Spain , Alfonso the Battler lost Earnings_and_losses Castrojeriz and the other places he held Defending in Castile west of the Sierra de la Demanda to Alfonso VII .