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.
Mirimanidze The Mirimanidze ("sons of Miriman") were a Georgian noble family of Armenian ethnicity whose members rose in prominence in the service of Iran’s Safavid dynasty. Hailing from Somkhiti, the clan produced numerous high-ranking figures in the Safavid state, and especially flourished in the 17th century, during the reign of the kings Abbas I (r. 1588-1629), Safi (r. 1629-1642) and Abbas II (r. 1642-1666). The complex identity of the family made then contemporary historians often describe the ethnic origins quite differently as compared to each other. In the later Safavid era, Hosaynqoli Khan (Vakhtang VI of Kartli), the last Safavid "vali" (governor) of Georgia, confirmed the family as belonging to the "t'avadi" (upper class nobles).