Drogön Chögyal Phagpa
Drogön Chogyal Phagpa (Tibetan: འགྲོ་མགོན་ཆོས་རྒྱལ་འཕགས་པ།, Wylie: ʼgro mgon chos rgyal ʼphags pa; Chinese: 八思巴; 26 March 1235 – 15 December 1280) was the fifth leader of the Sakya school of Tibetan Buddhism. He was also the first Imperial Preceptor of the Yuan dynasty and was concurrently named the director of the Bureau of Buddhist and Tibetan Affairs, serving during the reign of Kublai Khan.