Yangchen Drubpé Dorje

Yangchen Drubpe Dorje (Tib. དབྱངས་ཅན་གྲུབ་པའི་རྡོ་རྗེ་, Wyl. dbyangs can grub pa'i rdo rje) (1809-1887) is best known as the author of the The Wish-Fulfilling Tree: The Essence of Thönmi’s Masterpiece "The Thirty Verses" (ལེགས་བཤད་ལྗོན་དབང་, legs bshad ljon dbang), the most popular work on Tibetan grammar. He was the nephew of Ngulchu Dharmabhadra.