Dilgo Khyentse Rinpoche (Tibetan: དིལ་མགོ་མཁྱེན་བརྩེ་, Wylie: dil mgo mkhyen brtse) (c. 1910 – 28 September 1991) was a Vajrayana master, scholar, poet, teacher, and head of the Nyingma school of Tibetan Buddhism from 1987 to 1991.
Read about Dilgo Khyentse Rinpoche in Wikipedia