Jochi Khan

Jochi Khan (c. 1181 – February 1227) was the eldest son of Genghis Khan, leader of the Mongol Empire and his principal wife. He was also posthumously named Khan of the, one of the divisions of the Mongol Empire.

Jochi Khan was killed by the Assassins in February 1227.

Reference

 * Assassin's Creed: Memories