Agbuga (Āqbuqā), Tughu were also in the service of Abaga khan. Agbuga, who was promoted to mir-e mirān (commander-in-chief) by Keyhatu khan, was later assassinated by Baydu's supporters in 1295. He became the patron (murabbī) of Sadr al- Din Zanjani, Kaykhatu's grand vizier. Aq buqa was married to Qhazan khan's sister Ūljatāy Sulṭān, but after his death, his son Hussein married his father's wife and took the title of gūrgān (greregen) or royal son-in-law. Hussein first served Oljaitu and then Abu Sa'id, and took part in the march on Gilan in 1317. He was later appointed ruler of Arran in 1313 and died in Khorasan in 1322. After his death, his son Shaykh Hasan ("Hasan Buzurg", "Hasan The Great") became the head of the family. He was both the cousin of Abu Sa'id and the nephew of Amir Choban. After defeating his rivals, Hasan Buzurg strengthened his ties with Muhammad Khan (Pir Hussein), who ruled Anatolia at the time. He then proceeded to Tabriz where he put Muhammad on the throne and married the granddaughter of Chupan and the wife of Abu Sa'id, Dilshad Khatun. Shaykh Ḥasan was the ‘biklārī bik [beglerbeg], or amīr al- umarā’’. For a short time in 1337–1338, Hasan Buzurg-un's authority was recognized in all parts of the Ilkhanate Empire except Khorasan, but after being expelled by Ḥasan-e Kucak and his brother Malek Ašraf in 1338–1339, he was forced to evacuate Azerbaijan and his power only held in Iraq. Hasan Buzurg died in July 1356 and was buried in Najaf. He was succeeded by his son, Shaikh Uways Jalayir. Shaykh Uways period According to historian Patrick Wing, while the Jalayirid sultans sought to preserve the social and political order of the Ilkhanate, they claimed to be the legitimate heirs of the rule of this order. At the center of the claims of the Jalayirid regarding the Ilkhanid heritage was their attempt to control Azerbaijan, the main center of the Ilkhanate. This province represented the symbolic heritage and material wealth of the Ilkhanate and became the focus of the Jalayirid political program. Shortly after Shaykh Uways Jalayir succeeded his father, the old enemy of the Jalayirids, the Chobanids, were overrun by the forces of the Golden Horde under Jani Beg in 1357. Malek Asraf was executed, and Azerbaijan was conquered. Following Jani Beg's withdrawal from Azerbaijan, as well as his son Berdi Beg’s similar abandonment of the