Butön Rinchen Drup , (1290-1364), 11th Abbot of Shalu Monastery, was a fourteenth-century Sakya master and Tibetan Buddhist leader. Shalu was the first of the major monasteries to be built by noble families of the Tsang dynasty during Tibet's great revival of Buddhism, and was an important center of the Sakya tradition. Butön was not merely a capable administrator but he is remembered to this very day as a prodigious scholar and writer and is Tibet's most celebrated historian.