Orgyenpa Rinchen Pal
Orgyenpa (or Urgyenpa) Rinchen Pal (Tib. ཨོ་རྒྱན་པ་རིན་ཆེན་དཔལ་, Wyl. o rgyan pa rin chen dpal) (1230-1309?) — the founder of the tradition known as ‘Approach and Accomplishment of the Three Vajras’, one of the eight great chariots of the practice lineage. He was also one of the principal holders of the Kalachakra tantra lineages.