Mutukan / Mutugen of the Qunqirat

..."Mutugen was the eldest son of Chagatay, his mother was Yisulun Hatun. Father loved him more than other children, and because he was also Genghis Khan's favorite, he spend most of his time near him. At that time, when Genghis Khan sent his father Chagatay together with Juchi and Ugedey to siege the Horezm, and himself started siege of the Bamiyan fortress, this same Mugutan was hit by an arrow from fortress and he died"...

..." Mutugen had four (4) sons in this order: Bayju, Buri, Yisun-Duva and Kara-Hulagu."...

Source: Сборник летописей Рашид-ад-Дина, Volumes 2-3 By Р. ад Дин

https://books.google.com/books?id=Wuf-AgAAQBAJ&pg=PA232&lpg=PA232&d...

Mutukan was the eldest son of Chagatai Khan and was grandson of Genghis Khan. Mutukan (Mö'etüken) was killed during the siege of Bamiyan in 1221. His son was Yesü Nto'a, a grandson of Chagatai Khan. Yesu' Nto'a was the father of Baraq (Chagatai Khan). Buraq Khan was khan of Moghulistan from 1266–1271.[1][2]

Genealogy of Chagatai Khanates[edit] In Babur Nama written by Babur, Page 19, Chapter 1; described genealogy of his maternal grandfather Yunas Khan as:

Yunas Khan descended from Chaghatai Khan, the second son of Chingiz Khan (as follows,) Yunas Khan, son of Wais

Khan, son of Sher-'ali Aughlon, son of Muhammad Khan, son of Khizr Khwaja Khan, son of Tughluq-timur Khan, son of Aisan-bugha Khan, son of Dawa Khan, son of Baraq Khan, son of Yesuntawa Khan, son of Muatukan, son of Chaghatai Khan, son of Chingiz Khan