The Treasury of Lives

Sumpa Lotsāwa Darma Yonten (sum pa lo tsA ba dhar ma yon tan) was from Rong, on the south bank of the Yarlung river near Tsetang. He traveled to Nepal where he worked with Jayasena, a paṇḍita who later taught with him in Tibet. With Jayasena he translated the Dākārnava Tantra, one of the main "explanatory" tantras of the Cakrasaṃvara. They also completed a translation of Saroruha's commentary, and various related liturgical texts composed by Jayasena. Dharma Yonten later revised the translation under the sponsorship of his uncle, Pelchok Depai Dorje (dpal mchog dad pa'i rdo rje).

Darma Yonten was a teacher to Sakya Jetsun Drakpa Gyeltsen (sa skya rje btsun grags pa rgyal mtshan, 1147-1216). According to the Gyude Kuntu (rgyud sde kun btus) he passed on the Dākārnava transmission to Jetsun Drakpa Gyeltsen (rje btsun grags pa rgyal mtshan, 1147-1216).