History of Tibet
Five hundred years before Buddha Sakyamuni came into this world i.e., circa 1063 B.C., a semi-legendary figure known as Lord Shenrab Miwo reformed the primitive animism of the Shen race and founded the Tibetan Bon religion. According to Bonpo sources there were eighteen Shangshung Kings who ruled Tibet before King Nyatri Tsenpo. Tiwor Sergyi Jhagruchen was the first Shangshung King.