Dreyul Kyetsel is a Sakya monastery that was founded by Jamchen Rapjampa Sanggye Pel in 1449 with the patronage of the Rinpunpa. After the Rinpungpa lost power, monks from Dreyul Kyetsel studied at Ngor and Sakya.
Akester, Matthew. 2016. Jamyang Khyentse Wangpo's Guide to Central Tibet. Chicago, IL: Serindia Publications, pp. 526-527.
Gyurme Dorje. 2009. Tibet Handbook. Bath: Footprint, p. 304.
Everding, Karl-Heinz. 2004. “rNying ma pa Lamas at the Court of Mang yul Gung thang: The Meeting of gTer ston bsTan gnyis gling pa with King Kun bzang nyi zla grags pa.” In Christopher Cuppers, editor, The Relationship Between Religion and State (chos srid zung 'brel) In Traditional Tibet. Lumbini: Lumbini International Research Institute.
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The TBRC RID number refers to the unique ID assigned by the Tibetan Buddhist Resource Center (TBRC.org) to each historical figure in their database of Tibetan literature.