Yumo Mikyo Dorje
Yumo Mikyo Dorje (Tibetan: ཡུ་མོ་མི་བསྐྱོད་རྡོ་རྗེ་, Wylie: Yu-mo Mi-bskyod Rdo-rje) was a student of the Kashmiri scholar Somanatha, and an 11th century Kalachakra master.
Yumo Mikyo Dorje is regarded as one of the earliest Tibetan articulators of a shentong (zhentong) view of shunyata — an understanding of the absolute radiant nature of reality.
Emphasized within the Kalachakra Tantra and the Buddha's teachings on Buddha nature in the so-called The Third Turning of Wheel, this view later became emblematic of the Jonang tradition of Tibetan Buddhism.
He was an 11th century Tibetan master (b. 1027), a Kalachakra yogin and disciple of the Kashmiri scholar Somanatha.
He formulated his understanding of ultimate reality much along the same lines as the Jonang master Dolpopa Sherab Gyaltsen was to do much later, without however coining the same explicit terminology.
Therefore Yumowa is often regarded as the originator of the Jonangpa's Shentong view and the founder of their school, which he clearly was not.
From Yumowa Mikyo Dorje onwards, the Dro lineage of the Kalachakra passed on through the lineage-holders Dharmeshvara, Namkha Odzer, Machig Tulku Jobum, Drubtob Sechen, Choje Jamyang Sarma and Choku Odzer.
Choku Odzer in turn became the teacher of Kunpang Thukje Tsondru who became the actual founding father of the Jonangpa school.
Author of the "Four Clear Lamps" (gsal sgron skor bzhi) - Short texts on zung 'jug, phyag rgya chen po, 'od gsal and stong nyid.
