Tolui, (Classic Mongolian:
Toluy,
Tului, , ,
Tolui Khan (meaning the
Khan Tolui)) (1192–1232) was the fourth son of
Genghis Khan by his chief khatun
Börte. His
ulus, or territorial inheritance, at his father's death in 1227 was the homelands in
Mongolia, and it was he who served as civil administrator in the time it took to confirm
Ögedei as second
Great Khan of the
Mongol Empire (1206–1368). Before that he had served with distinction in the campaigns against the
Jin dynasty, the
Western Xia and the
Khwarezmid Empire, where he was instrumental in the capture and massacre at
Merv and
Nishapur. He is a direct ancestor of most of the Emperors of Mongolia and the Ilkhanids.