Rigdzin Kumaraja
Rigdzin Kumaraja (1266-1343) was a Nyingma Dzogchen master in the lineage of Vima Nyingthig.
He spent several years at Tsurphu Monastery and also at the Monastery of Dingri, where he studied with Urgyenpa, among others, and met the 3rd Kamarpa, Ranjung Dorje, whom he later taught the Dzogchen and the practice of Phowa.