Ubaydallah ibn Abdallah ibn Tahir was the last major Tahirid to hold high office in what dynasty?
Ubaydallah ibn Abdallah ibn Tahir Abu Ahmad Ubaydallah ibn Abdallah ibn Tahir (Arabic: أبو أحمد عبيد الله بن عبد الله بن طاهر‎ ‎ , ca. 838 – May 913) was a ninth century Tahirid official and military officer. He was the last major Tahirid to hold high office, having served as the governor of Baghdad at various points between 867 and 891.
Muhammad ibn Tughj al-Ikhshid Abū Bakr Muḥammad ibn Ṭughj ibn Juff ibn Yiltakīn ibn Fūrān ibn Fūrī ibn Khāqān (8 February 882 – 24 July 946), better known by the title al-Ikhshīd (Arabic: الإخشيد‎ ‎ ) after 939, was an Abbasid commander and governor who became the autonomous ruler of Egypt and parts of Syria (or Levant) from 935 until his death in 946. He was the founder of the Sunni Ikhshidid dynasty, which ruled the region until the Fatimid conquest of 969.