Hizr (Abdollah Khan) Chengizid - JOCHID -

Abdullah Khan ibn Uzbeg Khan عبد اللہ خان ابن ازبک خان

As a puppet Khan under Mamai 1367 – 1368 C.E. 1st reign

As a puppet Khan under Mamai 1369 – 1370 C.E. 2nd reign

Howorth names “Sheritumgha, the mother of Janibeg, and probably also of his other sons Timur, Tinibeg and Khidrbeg” as one of the wives of Uzbek, adding that “according to the chronicle of Troitzki, Janibeg also killed his brother Khidr Beg”.

[ In 1361 he (Mamai) supported Ğabdullah, son of Uzbeg Khan, who became Khan in Crimea. Upon the death of Ğabdullah in 1370, Mamai supported Bulak under regency of Tulun Beg Khanum, who only briefly enjoyed power before being replaced by his main opponent Urus in 1372. ] ref:https://en.wikipedia.org/wiki/Mamai.

https://ru.wikipedia.org/wiki/%D0%90%D0%B1%D0%B4%D1%83%D0%BB%D0%BB%D0%B0%D1%85_(%D1%85%D0%B0%D0%BD_%D0%97%D0%BE%D0%BB%D0%BE%D1%82%D0%BE%D0%B9_%D0%9E%D1%80%D0%B4%D1%8B) Abdullah Khan (c. 1340-1370, Abdullah Khan , Abd-ulla [1] , Abdallabek , Abdul [2] , Tat. Gabdullah Khan ) - Khan of Ulus Jochi (Golden Horde) in 1367-1368 and 1369-1370, the youngest of nine sons (according to other sources, a grandson) of Uzbek Khan .

Biography
Beklyarbek Mamai saved one of the sons of Uzbek Khan, Abdullah, and sent him to the Crimea and from there to Byzantium . After the assassination of Khan Timur-Khodja with the support of Mamai in 1361, Abdullah was proclaimed Khan of the western part of the Ak Horde in the Crimea. During his reign in 1363-1368 a coin was minted.

In 1367, Mamai captured the Golden Horde capital Sarai al-Jadid , and Abdullah was proclaimed Khan of the Golden Horde. Ruled nominally, on his behalf ruled the state Mamai.

In 1368, Mamai, having left Khan Abdullah in Sarai, went to the Crimea to suppress the speech directed against him. Meanwhile, Abdullah Khan could not keep the capital and surrendered it to Uljai-Timur . But soon the latter, in turn, was driven out of Saray in the same year by the shibanid Hassan , the nephew of Mir-Pulad . The reign of Hassan Khan did not last long - already in 1369 he was expelled from Sarai by Mamai, and Abdullah Khan was returned to the Khan's throne.

Abdullah Khan died in 1370, and Mamai proclaimed the 10-year-old son of Abdullah Bulak as Khan of the Golden Horde under the regency of his wife Tulunbek Khanum , daughter of Berdibek .