Palden Khyentse Oser (1904-1953) was born at Tsurphu as a son of the 15th Karmapa. At the age of twelve, he was recognized as the second incarnation of Jamgon Kongtrul Lodro Thaye and enthroned at Tsurphu by the 15th Karmapa. He spent many years at Tsadra Rinchen Trak (ie Upper Retreat Center of Palpung Monastery), the seat of the First Jamgon Kongtrul and studied with excellent masters. He received the full education and lineage transmission from the Karmapa. He expanded his teaching activities throughout Tibet and benefited many beings in Tibet and China. Palden Khyentse Oser was one of the most renowned Mahamudra masters, and held the ultimate lineage.
He passed the innermost lineage of Mahamudra to the Sixteenth Karmapa, Rangjung Rikpe Dorje.