Overview
Tughlugh Timur Khan (also Tughluq Tömür or Tughluk Timur) (1312/13–1363) was the Khan of Moghulistan from c. 1347 and Khan of the whole Chagatai Khanate from c. 1360 until his death. Esen Buqa (a direct descendant of Chagatai Khan) is believed to be his father. His reign is known for his conversion to Islam and his invasions of Transoxiana.
Background
After the Chagatayid Qazan Khan was killed in 1346, the Chagatai Khanate underwent a transformation. In the west (Transoxiana), the mostly Turko-Mongol tribes, led by the Qara'unas amirs, seized control. In order to maintain a link to the house of Genghis Khan, the amirs set several of his descendants on the throne, though these khans ruled in name only and had no real power.
The eastern part of the khanate, meanwhile, had been largely autonomous for several years as a result of the khans' weakening power. This eastern portion (most of which was known as "Moghulistan") was, in contrast to Transoxiana, primarily inhabited by Mongols and was largely Buddhist and Shamanist.
From Wikipedia (CC BY-SA 4.0).