Yasa'ur (died 1320) was a Chagatai prince who launched a revolt against the

Ilkhan The Ilkhanate, also spelled Il-khanate ( fa, ایل خانان, ''Ilxānān''), known to the Mongols as ''Hülegü Ulus'' (, ''Qulug-un Ulus''), was a khanate established from the southwestern sector of the Mongol Empire. The Ilkhanid realm, ...

Abu Sa'id. He was the son of Chübei, and a great-great-grandson of

Chagatai Khan Chagatai Khan ( Mongolian: ''; Čaɣatay''; mn, Цагадай, translit=Tsagadai; chg, , ''Čaġatāy''; ug, چاغاتاي خان, ''Chaghatay-Xan''; zh, 察合台, ''Chágětái''; fa, , ''Joghatây''; 22 December 1183 – 1 July 1242) ...

. Yasa'ur had originally resided within the Chagatai ''ulus''. In 1314 he participated in a campaign against the Ilkhanate, together with the Chagatai Khan's brother

Kebek Kebek (died 1325/1326) was khan of the Chagatai Khanate from 1309 until 1310, and again from c. 1318 until his death. Early life Kebek was the son of Duwa, who was the Khan from 1282 until 1307. Duwa sent several expeditions to the Delhi Sul ...

and a Neguderi prince

Daud Khwaja romanized: Dāwīḏ syr, ܕܘܝܕ, Dawīd Koine el, Δαυίδ, Dauíd , image = Prophet Dawood Name.svg , image size = 150px , caption = David's name in Islamic calligraphy , birth_date = 10th c ...

(a son of

Qutlugh Khwaja Qutlugh Khwaja (d. 1299/1300) was a son of Duwa, the Mongol khan of Chagatai Khanate, division of the Mongol Empire. He became a chief of the Qara'unas in Afghanistan after Abdullah was recalled by the Khan to Central Asia in around 1298–1299. ...

) who had been expelled from his territories by the Ilkhan the previous year. Their forces defeated the Ilkhan army near the banks of the

Murgab River The Marghab River (Persian/Pashto: مرغاب, ''Morqâb''), anciently the Margiana ( Ancient Greek: Μαργιανή, ''Margianḗ''), is an long river in Central Asia. It rises in the Paropamisus Mountains (''Selseleh-ye Safīd Kūh'') in Gh ...

; they then marched to

Herat Herāt (; Persian: ) is an oasis city and the third-largest city of Afghanistan. In 2020, it had an estimated population of 574,276, and serves as the capital of Herat Province, situated south of the Paropamisus Mountains (''Selseleh-ye Safē ...

. The Ilkhan Öljeitü then set off with an army for the east, while the Chagataiid forces were recalled by the khan Esen Buqa. Around this time Yasa'ur, who had been accused by Kebek of cooperated with the Ilkhanid forces during the invasion, defected to Öljeitü. His forces engaged in battle with the Chagataiid troops; an Ilkhanid army that had crossed the

Oxus The Amu Darya, tk, Amyderýa/ uz, Amudaryo// tg, Амударё, Amudaryo ps, , tr, Ceyhun / Amu Derya grc, Ὦξος, Ôxos (also called the Amu, Amo River and historically known by its Latin name or Greek ) is a major river in Central Asi ...

joined the fighting and secured victory for Yasa'ur. He, escorted by the Ilkhanid force, entered

Khorasan Khorasan may refer to: * Greater Khorasan, a historical region which lies mostly in modern-day northern/northwestern Afghanistan, northeastern Iran, southern Turkmenistan, Tajikistan, and Uzbekistan * Khorasan Province, a pre-2004 province of Ira ...

; Öljeitü then allowed him to take control of the pasture lands of the Badghis. Öljeitü died in 1316 and was succeeded as Ilkhan by his son Abu Sa'id. Yasa'ur initially pledged loyalty to the new Ilkhan, but was apparently uncooperative with Ilkhanid authorities. In early 1319 he openly revolted against Abu Sa'id, invading the province of Mazandaran. This revolt coincided with an invasion by

Uzbeg Khan The Uzbeks ( uz, , , , ) are a Turkic ethnic group native to the wider Central Asian region, being among the largest Turkic ethnic group in the area. They comprise the majority population of Uzbekistan, next to Kazakh and Karakalpak m ...

, forcing the Ilkhanids to defend against two attacks simultaneously. Amir Husain (the father of

Hasan Buzurg Shaikh Hasan (), also known as "Hasan Buzurg" ("Hasan The Great"), Hassan the Jalair or Hassan-e Uljatâï was the first of several de facto independent Jalayirid rulers of Iraq and central Iran. Early years He was born to Amir Husain Jalayir ...

, who founded the Jalayirid dynasty in

Baghdad Baghdad (; ar, بَغْدَاد , ) is the capital of Iraq and the second-largest city in the Arab world after Cairo. It is located on the Tigris near the ruins of the ancient city of Babylon and the Sassanid Persian capital of Ctesiphon ...

) was sent to deal with Yasa'ur. The Amir Coban, overestimating the strength of Yasa'ur, also planned to march against the Chagataiid prince at the head of a 20,000-strong army, but eventually decided to defend against Uzbeg's forces. Amir Husain's approach caused Yasa'ur to retreat from Mazandaran. From Tus he then sent a force to take

, whose ruler, the Kartid Giyath al-Din, had declared his loyalty to the Ilkhanids. The siege of Herat was unsuccessful, however, as Yasa'ur decided to withdraw upon hearing of the approach of the Ilkhanid army and withdrew into southern

Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is borde ...

. In the following year, he was killed by Kebek, who had recently become Chagatai Khan and who deemed Yasa'ur to still be a threat. Yasa'ur's personal troops eventually formed the basis of the Yasa'uri, a group that gained influence within the Chagatai ''ulus'' in the mid-fourteenth century.

References

*J. A. Boyle (1968). ''The Cambridge History of Iran, Volume Five: The Saljuq and Mongol Periods''. {{DEFAULTSORT:Yasaur Generals of the Mongol Empire 14th-century Mongolian people 1320 deaths Year of birth unknown