Ubaydallah ibn Abdallah ibn Tahir was the last major Tahirid to hold high office in what dynasty?
Tahirid dynasty The Tahirid dynasty (Persian: طاهریان‎ ‎ , "Tâhereyân") was a dynasty, of Persian dihqan origin, that governed the Abbasid province of Khorasan from 821 to 873 and the city of Baghdad from 820 until 891. The dynasty was founded by Tahir ibn Husayn, a leading general in the service of the Abbasid caliph al-Ma'mun. Their capital in Khorasan was initially located at Merv but was later moved to Nishapur. The Tahirids enjoyed a high degree of autonomy in their governance of Khorasan, but they remained subject to the Abbasid caliphate and were not independent rulers.
Izz al-Din Husayn Izz al-Din Husayn (Persian: عز الدین حسین) was the king of the Ghurid dynasty. He succeeded his father Qutb al-din Hasan in 1100. When Husayn ascended the Ghurid throne, his kingdom was in chaos. However, he managed to restore peace, and strengthen his kingdom. During Husayn's late reign, the Seljuq sultan Ahmad Sanjar invaded his domains, defeated him, and captured him. However, Sanjar later released Husayn in return for sending tribute to him. After Husayn's death in 1146, he was succeeded by his son Sayf al-Din Suri. Husayn also had 6 other sons who later divided the Ghurid kingdom among themselves.