Khetsün Shönu Drub
adapted from "Shangpa Masters" on 
Shönu Drub, aka Khetsün Shönu Drub (d.1319) was born in a farmer's house at Nyang in Tibet. He became a monk at the age of ten before the abbot Chimpa Yidshin Norbu and took full ordination at the age of twenty. Under the guidance of the teacher Lokyawa he excelled in learning. At the age of twenty-one he stopped his intellectual studies and approached the Sakya lamas to get tantric teachings for actual attainments and considered both the words and the meaning that those teachers expressed. As unfavorable conditions arose within the Sakya community, Shönu Drub paid his final visit to Jangsem Kungzhon. Leaving Sakya, he proceeded to meet the great ascetic master Dampala from whom he got several ascetic practices such as Cutting the Thread, which can overcome all obstacles. Shönu Drub received several cycles of teachings from Lama Lopon Gelong. Shönu Drub learned about Sangye Tönpa from Lama Kamchenpa and great faith and devotion arose in him. With strong feelings Shönu Drub set out for Central Tibet to meet Sangye Tönpa and requested him to grant the empowerment of Illusory Form. Sangye Tönpa gave the complete instructions on the Six Doctrines because Shönu Drub was very special and worthy of receiving these profound teachings, which were not taught to ordinary students. Sangye Tönpa gave all the instructions of the lineage including the Five Tantric Deities, the Six Doctrines of Niguma, Mind Deathlessness and Non-Deviation, Mahamudra, oral instructions of the Dakpo Kagyu, Drikung Kagyu, Drukpa Kagyu, Tsalpa Kagyu and Sakya school as well as the teachings of Machik Lapdron, to the worthy Shönu Drub, who diligently and steadily practiced and mastered all the teachings he received from Sangye Tönpa and so many other teachers of different lineages. Before Shönu Drub passed away, he gave away all of his possessions and went into retreat. At his death all kinds of miraculous omens appeared near and far. Dakinis could be heard singing in the sky.
- Serlingpa Tashi Pal