Karma Lingpa
Karma Lingpa (ཀརྨ་གླིང་པ་, Wyl. karma gling pa) (b. 1326) was a 14th century tertön who revealed the Shyitro Gongpa Rangdrol cycle, from which come the teachings on the six bardos and the Bardo Tödrol Chenmo, the so-called Tibetan Book of the Dead.