jun 18, 842 - Start of Tibet Civil war

Description:

The last emperor of the unified Tibetan Empire, Langdarma, was assassinated in 842–846, by either a Buddhist hermit or a monk named Pelgyi Dorje of Lhalung. The assassination left two possible heirs, Yumtän and Ösung, to fight for the throne, leading to a civil war. The successors of Ösung controlled the region of Ngari, while the successors of Yumtän controlled the Ü region. The son of Ösung was Pälkhortsän, who would sire two sons, Trashi Tsentsän and Thrikhyiding, also called Kyide Nyigön in some sources. Thrikhyiding migrated to the western Tibetan region of upper Ngari and married a woman of high central Tibetan nobility, with whom he founded a local dynasty that would go on to create the kingdoms of Purang-Guge, Maryul, and Zanskar. This civil war weakened the political authority of the Tibetan monarchy, dissolving Tibet into separate tribes and small kingdoms.

Added to timeline:

Date: