Chobanids
The Chobanids or the Chupanids were descendants of a Mongol family of the Suldus clan that came to prominence in 14th century Persia. At first serving under the Ilkhans, they took de facto control of the territory after the fall of the Ilkhanate. The Chobanids ruled over Azerbaijan, Arrān, parts of Asia Minor, Mesopotamia, and west central Persia, while the Jalayirids took control in Baghdad.
Amir Chupan and his sons
During the early 14th century, Amir Chupan served under three successive Ilkhans, beginning with Ghazan Mahmud. A military commander of note, Chupan quickly gained a degree of influence over the Ilkhans and married several members of the line of Hulagu Khan. His power fueled resentment among the nobility, who conspired against him in 1319 but failed. The Ilkhan Abu Sa'id, however, also disliked Chupan's influence and successfully eliminated him from court. He fled in 1327 to Herat, where the Kartids executed him. Several of his sons fled to the Golden Horde or the Mamluks of Egypt while others were killed.Baghdad Khatun
The Chobanids were not completely wiped out from Persia. A daughter of Chupan's, Baghdad Katun, had caught the eye of Abu Sa'id. During Chupan's lifetime, she had been married to Hasan Buzurg, the future founder of the Jalayirids, but after Chupan fled Hasan Buzurg divorced her, and she married Abu Sa'id. She quickly gained influence over the Ilkhan and exercised the wide powers given to her. She was alleged to have been involved in any conspiracies against the Ilkhan, but was believed by some to have caused Abu Sa'id's death in 1335. Abu Sa'id's successor Arpa Ke'un executed her.Role during the fall of the Ilkhanate, and Hasan-i Kuchak
Arpa Ke'un's position proved to be weak; when a granddaughter of Chupan, Delsad Katun, fled to Diyarbakr, it caused the governor of that region to attack and defeat the Ilkhan. During the strife that occurred in the next few years, individual members of the Chobanids sided with various factions, such as Arpa or Hasan Buzurg. The latter ended up marrying Delsad Katun, who provided for the heirs to the Jalayirid position.While the Jalayirids were consolidating their position in Iraq, however, other Chobanids were also busy. Hasan Kucek, a grandson of Chupan, rallied much of the Chobanid family to his side and defeated the Jalayirids in 1338, paving the way for a Chobanid realm in the area around Tabriz. That same year, he elevated Sati Beg, sister of Abu Sa'id and widow of Chupan, to the Ilkhanid throne. To keep Sati Beg in check, he forced her to marry his puppet Suleiman Khan. Hasan Kucek continued to fight the Jalayirids, but family infighting proved to be the most difficult challenge.
To the south, Pir Husayn Chubani was designated as governor of the region of Fars and Isfahan regions from 1339 to 1342. The Chobanids firmly controlled Isfahan at that time, until the takeover of the city by the Injuid Abu Ishaq Inju in 1342, who replaced the Chobanids in southern Iran with the rule of the Injuids.
Several members defected to the Jalayirids; in any case, Hasan Kucek was forced to deal with them up until his death in 1343.