Al-Hasan ibn Qahtaba ibn Shabib al-Ta'i (Arabic : الحَسَن بن قَحْطَبَة بن شبيب الطائي) was a senior military leader in the early Abbasid Caliphate.
He was the son of Qahtaba ibn Shabib al-Ta'i, who along with Abu Muslim led the Abbasid Revolution that toppled the Umayyad Caliphate. Along with his brother Humayd, Hasan was active in the Abbasid cause in Khurasan during the years before the Revolution, serving as a deputy naqib .During the Revolution itself, together with his father he was one of the principal commanders in the campaign that brought the Abbasid armies from Khurasan into Iraq; he took part in the pursuit of Nasr ibn Sayyar and the victory at Nihavand, and despite his father's death in battle against the Umayyad governor Yazid ibn Umar al-Fazari, Hasan led the Khurasani army into Kufa.
After the Revolution, Hasan served the future Caliph al-Mansur (r. 754–775) as deputy governor in Armenia, which he helped pacify, and sided with Mansur against the rebellion of Abdallah ibn Ali in Syria in 754.After this, he was occasionally appointed to the frontier with the Byzantine Empire, where he led the summer raids into Asia Minor in 766, 779 and 780. He is probably also to be identified as the Mouchesias (Μουχεσίας) of Byzantine sources, which indicate that on the orders of Caliph al-Mahdi (r. 775–785) he was engaged in persecutions and forced conversions of Christians in Syria.
Although distinguished as a member of the abna al-dawla , the Abbasid regime's Khurasani elite,and very wealthy—like most Abbasid commanders, he received portions of the newly built capital, Baghdad, as a grant—Hasan played scarcely any political role at court. He died in 797 at the age of 84.
His sons, Muhammad, Ali, and Sa'id, also held gubernatorial positions in various provinces. In the Fourth Fitna, they all sided with al-Amin against al-Ma'mun.As with most of the old Abbasid families, they lost power, although not their wealth, after the triumph of al-Ma'mun in the civil war.
Abu Muslim Abd al-Rahman ibn Muslim al-Khurasani or Behzādān Pour Vandād Hormozd born 718/19 or 723/27, died in 755), was a Persian general in service of the Abbasid dynasty, who led the Abbasid Revolution that toppled the Umayyad dynasty.
Khalid ibn Barmak was the first prominent member of the Barmakid family, which converted to Islam and became prominent members of the Abbasid court in the second half of the 8th century. Khalid himself was converted to Islam at the Umayyad court in the 720s, but joined the nascent Abbasid revolutionary movement in Khurasan, and played a significant role in the Abbasid Revolution that toppled the Umayyads. He enjoyed close relations with the first Abbasid caliph, al-Saffah, functioning as his chief minister and introducing innovations in record-keeping. Under al-Saffah's successor, al-Mansur, his influence decreased, but he still occupied significant provincial governorships in Fars, Tabaristan, and Mosul. As an administrator, he repeatedly distinguished himself for his fairness, especially in matters of taxation, and was a popular governor. He appears to have briefly fallen into disgrace around 775, but he managed to recover, helped by the rapid rise of his son, Yahya. His ties to the Abbasid dynasty were soon strengthened when his grandson, al-Fadl ibn Yahya, became the foster-brother of the future Harun al-Rashid, while Yahya became the prince's tutor. Khalid died in 781/2, shortly after returning from an expedition against the Byzantine Empire.
Qahtaba ibn Shabib al-Ta'i was a follower of the Abbasids from Khurasan who played a leading role in the Abbasid Revolution against the Umayyad Caliphate.
The siege of Kamacha by the Abbasid Caliphate took place in autumn 766, and involved the siege of the strategically important Byzantine fortress of Kamacha on the eastern bank of the Euphrates River, as well as a large-scale raid across eastern Cappadocia by a part of the Abbasid invasion army. Both enterprises failed, with the siege dragging on into winter before being abandoned and the raiding force being surrounded and heavily defeated by the Byzantines. The campaign was one of the first large-scale Abbasid operations against Byzantium, and is one of the few campaigns of the Arab–Byzantine wars for which detailed information survives, although it is barely mentioned in Arabic or in Byzantine sources.
The Fourth Fitna or Great Abbasid Civil War resulted from the conflict between the brothers al-Amin and al-Ma'mun over the succession to the throne of the Abbasid Caliphate. Their father, Caliph Harun al-Rashid, had named al-Amin as the first successor, but had also named al-Ma'mun as the second, with Khurasan granted to him as an appanage. Later a third son, al-Qasim, had been designated as third successor. After Harun died in 809, al-Amin succeeded him in Baghdad. Encouraged by the Baghdad court, al-Amin began trying to subvert the autonomous status of Khurasan, and al-Qasim was quickly sidelined. In response, al-Ma'mun sought the support of the provincial élites of Khurasan and made moves to assert his own autonomy. As the rift between the two brothers and their respective camps widened, al-Amin declared his own son Musa as his heir and assembled a large army. In 811, al-Amin's troops marched against Khurasan, but al-Ma'mun's general Tahir ibn Husayn defeated them in the Battle of Rayy, and then invaded Iraq and besieged Baghdad itself. The city fell after a year, al-Amin was executed, and al-Ma'mun became Caliph.
Harthama ibn A'yan was a Khurasan-born general and governor of the early Abbasid Caliphate, serving under the caliphs al-Hadi, Harun al-Rashid and al-Ma'mun. He played an important role in the victory of al-Ma'mun in the Abbasid civil war, but was executed at his orders when he protested against the power of the Sahlid family that dominated his court.
Khazim ibn Khuzayma al-Tamimi was a Khurasani Arab military leader. One of the early supporters of the Abbasid da'wa in Khurasan, he played a major role in the Abbasid Revolution against the Umayyads, and then spent the next two decades suppressing revolts across the Caliphate. As one of the main figures of the Khurasaniyya, the main power base of the Abbasid regime, he cemented his family in a position of power and influence: his sons would play an important role in the affairs of the Caliphate over the next decades.
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Abdallah ibn Malik al-Khuza'i was a senior military leader and provincial governor of the early Abbasid Caliphate.
Abu Nasr Malik ibn al-Haytham al-Khuza'i was an early Abbasid follower and military leader.
Thumāma ibn al-Walīd ibn Qa‘qā al-‘Absi‘ was an Arab general of noble lineage from Syria, who served the Abbasid Caliphate.
Humayd ibn Qahtaba ibn Shabib al-Ta'i was a senior military leader in the early Abbasid Caliphate.
Abū ʿAwn ʿAbd al-Malik ibn Yazīd al-Khurasānī was an early supporter of the Abbasids from Jurjan, who participated in the campaigns of the Abbasid Revolution and served as governor of Egypt and Khurasan.
Yazid ibn Asid ibn Zafir al-Sulami or Yazid ibn Usayd ibn Zafir al-Sulami was an Arab general and governor in the service of the early Abbasid Caliphate. He was active mostly in the Caliphate's northwestern frontier region, serving as governor of Arminiya and the Jazira and fighting against the Byzantine Empire and the Khazars.
Abdallah ibn Ali was a member of the Banu Abbas, who played a leading role in its rise to power during the Abbasid Revolution. As governor of Syria, he consolidated Abbasid control over the province, eliminating the remnants of the Umayyad dynasty and suppressing pro-Umayyad uprisings. After the death of his nephew and first Abbasid Caliph, al-Saffah, in 754, he launched a bid for the caliphal title against al-Saffah's brother, al-Mansur, but was defeated and imprisoned. He was killed in 764.
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Abu Abdallah Salm ibn Qutayba ibn Muslim al-Bahili was an 8th-century Arab who served as governor and military commander for both the Umayyad and Abbasid caliphates.
Yusuf al-Barm was a rebel leader against the Abbasid Caliphate in Khurasan in the 770s.