Marwan II
Yazid III's reign lasted six months, during which he briefly appointed Ibn Jumhur governor of Khurasan. He was succeeded by his brother Ibrahim ibn al-Walid, but in December 744 the latter was overthrown by Marwan II (r. 744–750), a strongman favored by the Qays of Upper Mesopotamia and the Byzantine frontier zone. The Qays were the only part of the Syrian elite that backed Marwan II's usurpation, after which the leaders of Yaman were driven out of Syria. A rebellion in the Kalb stronghold of Homs ensued, but was suppressed by Marwan II in 746. Opposition to Marwan II sparked rebellions in the provinces east of Syria, with Ibn Jumhur throwing his lot with the Alid rebel Abdallah ibn Mu'awiya.