Banu Qasi
At the beginning of the 9th century, the strategic importance of Tudela as a site on the river Ebro was enhanced by historical and political circumstances. It became the base of the Muwallad Banu Qasi family, local magnates converted to Islam that managed to stay independent of the emirs, establishing an on-off alliance and close ties with the Kings of Pamplona over the next century. With the power of the Banu Qasi fading at the onset of the 10th century, the town fell under the influence of the rising Caliphate of Córdoba and had to come up against a more aggressive policy on the part of the new dynasty ruling in Pamplona, the Ximenes, who had set up close ties with their neighbouring Christian kingdoms.