Engke Khan
Engke, was a Mongol Khagan of the Northern Yuan dynasty based in Mongolia. There is very little information that has existed for Engke Khan and there are questions about the identity of Engke Khan: some scholars believed that Jorightu was Yesüder and Engke Khan was Yesüder's son succeeding him, while other believed that the two were the same person. His name "Engke Khagan" means "Peaceful King" in the Mongolian language.
According to Mongolian historian J.Bor, Engke made an alliance with Timur against the Ming dynasty. An envoy of his met Engke for preparations all the way to China for his master's conquest. But Timur died while he was marching into China in 1405.
