Ubaydallah ibn al-Mahdi

In 761, the future caliph al-Mahdi married Raytah as his first wife after his return from Khurasan. She was the daughter of al-Saffah and his wife Umm Salamah, a Makhzumite. Raytah gave birth to two sons, Ubaydallah and Ali. During the reign of his half-brother Harun al-Rashid (), Ubaydallah was appointed as governor of Arminiyah and the northwestern provinces in 788/9, succeeding Yazid ibn Mazyad al-Shaybani. He was later appointed to two brief stints as governor of Egypt, in 795 and 796. In 810 or 811 Ubaydallah died in Baghdad. His nephew al-Amin led the prayers at his funeral. ==Siblings==

Ubaydallah was contemporary and related to several Abbasid caliphs, princes and princesses. He had total ten half-siblings and he had one full brother named Ali ibn Muhammad al-Mahdi. == Notes ==