Hülegü
Hulagu Khan, a grandson of Genghis Khan, was an avowed shamanist, but was nevertheless very tolerant of Christianity. His mother Sorghaghtani Beki, his favorite wife Doquz Khatun, and several of his closest collaborators were Nestorian Christians. One of his most important generals, Kitbuqa, was a Nestorian Christian of the Naiman tribe.