Zhang Yudrakpa Tsöndru Drak

Zhang Yudrakpa Tsöndru Drakpa (1122–93) (zhang g.yu brag pa brtson 'gru brags pa), also known as Gungtang Lama Zhang (gung-thang bla-ma zhang) and popularly simply as “Lama Zhang,” was the founder of the Tshalpa Kagyu sect of Tibetan Buddhism. Although a prominent religious figure, Lama Zhang was also deeply, and controversially, involved in the political and military conflicts in the Tibet of his time.