Wali of al - Andalus born date unknown, and died at the battle of Poitiers October 17, 733. His Government was developed in two periods, the first, which lasted barely a year in 721 and the second from the 730 until the date of his death.
Very few data regarding his first Government, which took place in the year 721 after happen to Al - Samh Ibn Malik al-Jawlaniare known. The only obligation that these early Governors had was the maintenance of the established order in the interior of the peninsula and progress towards the conquest of new territories was therefore frequent to undertake annual raids into the Kingdom of the Franks. After his deposition, Abd al - Rahman ibn Abdallah was succeeded by Ambasa ibn Sohaym Al - Kalbi.
The second mandate of Abd al - Rahman ibn Abdallah, was initiated in the year 730 date that succeeded Muhammad ibn Abd Allah al - Ashjai. It seems that their instructions in terms of domestic and foreign policy remained similar to those of his previous Government. It therefore dealt with the maintenance of peace on the peninsula and tried to expand the conquered territories.
In 732, Abd al - Rahman ibn Abdallah concentrated his army in the vicinity of the city of Pamplona. There after carrying out a detailed study of the previous campaigns undertaken against Gaul, he decided that the attack was directed against the Gascony, the Potou and Touraine. After crossing the Pyrenees through Roncesvalles pass went to Bordeaux, where he defeated Eudes, Duke of Aquitaine; After this first victory and encouraged by the rapid triumph went his way, starting the plundering of the rich churches and monasteries in its path. While Abd al - Rahman ibn Abdallah achieved significant wealth, Odo asked Carlos Martel, which in recent years had made great progress in the reconstruction of Frank Gaul and enjoyed great military prestige, to try to stop the advance of Muslim armies towards Tours. Carlos Martel came before that failed the city, but the army of Abd al - Rahman ibn Abdallah had not yet arrived in the area, far from waiting for the armed confrontation, the founder of the Carolingian dynasty, came in search of the Muslim army. Both armies found about twenty kilometers from the city of Poitiers, at the confluence of the rivers Vienne and Clain, specifically on the ancient Roman road that it connected the cities of Poitiers and Tours. Christian Chronicles extol, perhaps in too much, the figure of Carlos Martel. What is clear is that the army of Abd al - Rahman ibn Abdallah suffered a terrible defeat and after the latter's death, the survivors of the battle back in disorder towards the Iberian peninsula.
By Christian Party, the battle was skillfully used by Carlos Martel and its successors, which made her the symbol of franco power over Islam. Carlos Martel was introduced as the man who prevented that Europe was taken by the Muslims. By the Muslim side, their historians barely mentioned the battle. This has been interpreted as confirmation that the confrontation had not the transcendental importance of the Chronicles Christian wanted to give him, since the withdrawal of Poitiers was neither the first nor the last of these skirmishes on French soil. However it is remarkable that after this defeat, were very few people were interned on French soil to resume the conquest, except an attempt of the Governor of Narbonne, who failed in the year 732, despite the fact that he counted with the collaboration of the armies of the governed in those years by Uqba ibn al-Hajjaajpeninsula. It is possible that were supply difficulties linked to the internal problems of the waliato which provocasen the loss of interest of the Muslims to continue their ascent to the North, rather than the military defeats suffered.
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