- "Am I not the eldest Khan? I will have more than a quartered empire."
- ―Jochi Khan.[src]
Jochi Khan (c. 1181 – February 1227) was the eldest son of Genghis Khan, leader of the Mongol Empire and his principal wife Börte. He was also posthumously named Khan of the Ulus of Jochi, one of the divisions of the Mongol Empire. Despite being the eldest of Genghis Khan's sons, and numerous success on the battlefield, Jochi was not named as the Great Khan's successor. While controversial at the time, this issue became irrelevant when Jochi passed away before his father.
Jochi Khan didn't know that he was being tracked by the Assassins Qulan Gal and Darim Ibn-La'Ahad as he moved through Central Asia. In February 1227, under cover of night, Darim snuck into Jochi's tent and placed a few drops of poison into his waterskin. Later, Qulan witnessed the death of the Mongol chieftain, hearing his last words.