Sancho II
During the late 10th century, Almanzor, the ruler of Al Andalus, frequently led raids against the Christian kingdoms, and attacked the Pamplonese lands on at least nine occasions. In 966, clashes between the Islamic factions and the Kingdom resulted in the loss of Calahorra and the valley of the river Cidacos. Sancho II, while allied with Castilian militias, suffered a grave defeat in the Battle of Torrevicente. Sancho II was forced to hand over one of his daughters and one of his sons as tokens of peace. After the death of Sancho II and during the reign of García Sánchez II, Pamplona was attacked by the Caliphate on several occasions, being completely destroyed in 999, the King himself killed during a raid in the year 1000.