Toghun Temur, also known as Ukhaantu Khan (May 25, 1320 - May 23, 1370), was a son of Kusala who ruled as Emperor of the Yuan Dynasty, and is considered as the last Khagan of the Mongol Empire. During the latter years of his reign, the Mongols lost effective control over China to the Ming Dynasty. He was a Buddhist student of Karmapas and is considered as a previous incarnation of Tai Situpa. Toghun Temur Khan,the eldest brother of Rinchinbal, was born in 1320, the white monkey year. He assumed the throne in 1333, the black hen year, and passed away in 1370, the white dog year.