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 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.