The mother of XXX is whom?
Tolui
Tolui, (Classic Mongolian: ᠲᠥᠯᠦᠢ Toluy, Tului, Mongolian: Тулуй хаан, Chinese: 拖雷, Tolui Khan (meaning the Khan Tolui)) (1192--1232) was the fourth son of Genghis Khan by his chief khatun Börte.
Börte