Abd al-Aziz ibn Musa ibn Nusayr (عبد العزيز بن موسى) was the first governor of Al-Andalus, in modern-day Spain and Portugal. He was the son of Musa ibn Nusayr, the governor of Ifriqiya. ‘Abd al-Aziz ibn Musa ibn Nusayr had a long history of political and military involvement along with his father.
‘Abd al-Aziz ibn Musa ibn Nusayr accompanied his father in 712 to aid the Berber general, Tariq, in the Umayyad conquest of Hispania. It has been speculated that Musa ibn Nusayr and his son, both Arabs, did not want the glory of conquest to be claimed by a Berber. The conquest of the area was progressing smoothly under Tariq, Musa ibn Nusayr and ‘Abd al-Aziz ibn Musa ibn Nusayr. With the success of the conquest apparent, Tariq and Musa ibn Nusayr were called back to Syria by the Umayyad caliph, Sulayman, in 714. ‘Abd al-Aziz ibn Musa ibn Nusayr was given the governorship of Al-Andalus by his father. Musa ibn Nusayr, upon his return to Damascus, fell into disfavour with the caliph and ended his days in Medina as an “old and broken man.” ‘Musa ibn Nusayr outlived his son, ‘Abd al-Aziz ibn Musa.
‘Abd al-Aziz ibn Musa ibn Nusayr chose the town of Seville as his capital city. Seville, located in the modern day province of Andalucía in southern Spain on the Guadalquivir River. Under ‘Abd al-Aziz ibn Musa ibn Nusayr’s leadership after the departure of his father and Tariq, Islamic power, in what came to be known as Al-Andalus, expanded into modern day Portugal in the west and the sub-Pyrenean regions in the north. In one of the newly conquered lands, ‘Abd al-Aziz ibn Musa ibn Nusayr signed a peace treaty with the Visigothic lord of Murcia, Theudimer. His name in Arabic is Tudmir. The treaty, known as the Treaty of Tudmir, gave Visigothic Christians the right to continue to practise their religion, as long as they paid a special tax and remained loyal to their Muslim overlords.