Tahir ibn Abdallah

Tahir ibn 'Abdallah (died 862) was the Tahirid governor of Khurasan from 845 until 862.

During his father 'Abdallah's lifetime, Tahir was sent into the steppes to the north in order to keep the Oghuz Turks in line; he probably received Samanid assistance in this venture. When 'Abdallah died in 844, the Caliph al-Wathiq originally appointed another Tahirid, Ishaq ibn Ibrahim ibn Mus'ab, as his successor in Khurasan, but then reversed this decision and confirmed Tahir as governor.

Little is known about Tahir's reign, although there was unrest in some of the outlying provinces. Sistan, for example, was lost to the Tahirids when the 'ayyar leader Salih ibn al-Nadr drove out Tahir's governor and took power there himself. Tahir died in 862; his will stated that his young son Muhammad should succeed him as governor, and this was honored by the caliph.

Sources

• Bosworth, C.E. (1975). "The Ṭāhirids and Ṣaffārids". In Frye, R.N. The Cambridge History of Iran, Volume 4: From the Arab Invasion to the Saljuqs. Cambridge: Cambridge University Press. pp. 90–135. ISBN 0-521-20093-8. 

Tahirid dynasty
Early members	Ruzaiq Mus'ab Husayn ibn Mus'ab
In Baghdad (820–891)	Ishaq ibn Ibrahim al-Mus'abi Muhammad ibn Ishaq ibn Ibrahim Abdallah ibn Ishaq ibn Ibrahim Muhammad ibn Abdallah ibn Tahir Ubaydallah ibn Abdallah ibn Tahir Sulayman ibn Abdallah ibn Tahir Ubaydallah ibn Abdallah ibn Tahir Muhammad ibn Tahir (II) Ubaydallah ibn Abdallah ibn Tahir
In Khurasan (821–873)	Tahir ibn Husayn Talha ibn Tahir Abdallah ibn Tahir al-Khurasani Tahir (II) ibn Abdallah Muhammad ibn Tahir (II)