“…25 Richardson suggests a date of 1076; Vitali offers no specific date; Petech opts for 1024. However, a study of the 20 Yarlung dynasty inscriptions published by Richardson reveals only two (the Lhasa Zhol Doring South (c.764 CE) and the tomb of Khri lde srong brtsan (815) whose preambles could be said to refer to previous rulers.…”