sentences:  In or before 736, he called in the aid of the Saracens of Yusuf ibn 'Abd al-Rahman al-Fihri, Wali of Narbonne, to garrison Avignon, though some sources indicate that this city was conquered not granted, along with Arles.Other sources place the timing of the event after 736.In that year, Martel invaded the Rhone Valley with his brother Childebrand, and devastated the region, taking Arles and Avignon and confining Maurontus to Marseille.