mkhan chen khyab brdal lhun grub
Khenchen Khyabdal Lhundrub
འཇིགས་མེད་ཕུན་ཚོགས་འབྱུང་གནས།
Short Biography
From Nyoshul Khenpo
"Longchenpa's main Dzogchen lineage of transmission was passed down through his disciple Khenchen Khyabdal Lhundrub and survives in an unbroken lineage to this day."
From elsewhere
"Longchen Rabjam condensed the teachings of the Vima Nyingthig and Khandro Nyingthig and gave them the names Vima Yangthig and Khandro Yangthig respectively. Since then, the profound teaching called the Nyingthig Yab Zhi came into existence that has also been transmitted uninterruptedly till now. These teachings were passed down through Khenchen Khyabdal Lhundrub."
From Kongtrul's List of Teachings kong sprul gsan yig
The lineage transmission for Bodhisattva Vows byang chub sems dpa'i sdom pa thob pa'i brgyud pa he carried, lists Khenchen Khyabdal Lhundrup as having received from Longchenpa and bestowed on Chogdrapa Jamyang Dragpa Ozer, who in turn bestowed on Trulshig Sangye Onpo, etc.