Langdarma

Langdarma Udumtsen (Tib. གླང་དར་མ་འུ་དུམ་བཙན, Wyl. glang dar ma 'u dum btsan) — the last king of the Tibetan empire, who ruled from 838 to 842 AD. He was assassinated by Lhalung Palgyi Dorje.

He is said to have had two sons: Tridé Yumten (Wyl. khri lde yum brtan) and Namdé Ösung (Wyl. gnam lde 'od srungs). His grandson, King Yeshe Ö became pivotal in the revival of Buddhism after the so called dark age after the collapse of the Tibetan empire.