Chogye Trichen Rinpoche (Wyl. bco brgyad khri chen) aka Ngawang Khyenrab Thupten Lekshé Gyatso (Wy. ngag dbang mkhyen rab thub bstan legs bshad rgya mtsho) (1920-2007) was the head of the Tsarpa branch of the Sakya school. He was born in Tsang in 1920 and was recognised by the Thirteenth Dalai Lama as being the reincarnation of the previous Nalendra Monastery. His root teachers were the Fourth Zimwog Rinpoche Kunga Tenzin, and Dampa Rinpoche Shenpen Nyingpo. Following the Chinese invasion of Tibet, he travelled to Mustang where his sister was married to the king. He later became the secretary general of the Council for Religious and Cultural Affairs of the Tibetan government in exile, serving in this position until 1969. He founded the monasteries of Tashi Rabten Ling in Lumbini and Jamchen Lhakhang in Boudhanath. He passed away in January 2007, remaining in tukdam for fifteen days. His disciples include His Holiness the Dalai Lama and His Holiness Sakya Trizin.