Dolpopa Sherab Gyaltsen

Dölpopa Shérap Gyeltsen (Tibetan: དོལ་པོ་པ་ཤེས་རབ་རྒྱལ་མཚན་, Wylie: dol po pa shes rab rgyal mtshan) (1292–1361), known simply as Dölpopa, a Tibetan Buddhist master known as "The Buddha from Dölpo," a region in modern Nepal, is often seen as the founder of the Jonang tradition of Tibetan Buddhism. While the doctrinal origins of the Jonang school can be traced to the early 12th-century master Yumo Mikyöt Dorjé, it became much wider known through the efforts of Dölpopa Shérap Gyeltsen.

Dölpopa was born in Dölpo, but in 1309, when he was seventeen, he ran away from home to seek the Buddhist teachings, first in Mustang and then in Tibet.

In time, Dölpopa became one of the most influential and original yet controversial of Tibetan Buddhist teachers. Originally a monk of the Sakya school, he developed a teaching known as shentong (Wylie: gzhan stong), which is closely tied to Yogacara and Buddha-nature traditions. Dölpopa is also considered to be one of the greatest exponents and practitioners of the Kālacakra or "Wheel of Time" tantra:

It is important to keep in mind that Dölpopa was a consummate practitioner of the Six-branch Yoga, the perfection-stage practices of the Kālacakra tantra, and although he based his doctrinal discussions upon scripture, in particular the Kālacakra-related cycles, his own experience in meditation was crucial to the formulation of his theories.

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Wikipedia