The ruler of Aksu, the "dughlat" emir Puladchi, brought a young, 18-year-old, Tughluk Timur from the Ili valley in 1347, and in a "kurultai" declared him a grandson of Duwa Khan, the great-grandson of Chagatai Khan and ruler of the Chagatai Khanate between 1282 and 1307. Puladchi forced all moghuls to recognize Tughluk as Khan. Khans from Chagatai, the second son of Genghis Khan, to Tughluk Timur are known as "Chagatai khans", and from Tughluk Timur to his descendants as "Moghul khans".