The great yogin kun bzang dbang po [17th/18th cent.], a student of Ngawang Thrinle (grub chen ngag dbang phrin las) and a teacher to Rigdzin Tsewang Norbu (ka thog rig ‘dzin tshe dbang nor bu [1698-1755]). He was also known as chos rje kun bzang dbang po and is often referred to, like his teacher, as a Mahāsiddha or Lord of Siddhas. Originally he had practiced the rnying ma teachings of his paternal lineage. Later he received the jo nang transmissions and practiced them extensively in solitary retreat. He gained exceptional realisations and passed these teachings on to several of his students. It was he who, in the course of transmitting the jo nang teachings to tshe dbang nor bu, recognised him as an incarnation of mati pan chen blo gros rgyal mtshan [1294-1376], one of the closest students of dol po pa shes rab rgyal mtshan, which might in part explain tshe dbang nor bu’s affinity for the jo nang teachings in general and for the gzhan stong view in particular.
Most of this information is taken from the Jonang Foundation website. See link below.