[1] A younger son of Urus Khan, Quyurchuq survived his family's loss of the throne of the left (east) wing of the Golden Horde, the former Ulus of Orda, in 1379.
Quyurchuq accompanied Timur's second expedition into the Golden Horde, in 1395–1396, and participated in the Battle on the Terek in April 1395.
The core territory of the Golden Horde had been plundered and ravaged by Timur, and the main cities, Sarai included, had been pillaged and razed.
Timur headed home in the spring of 1396, leaving Quyurchuq in a difficult position at Sarai.
While Tokhtamysh set out to reassert his authority over the southwestern portions of the Golden Horde, Tīmūr Qutluq and Edigu attacked and defeated Quyurchuq, seizing Sarai.