Probably the same as the Rlang Su ga ta go ba mentioned in a Dunhuang manuscript. See Carmen Meinert, Chinese Chan and Tibetan Rdzogs-chen: Preliminary Remarks on Two Tibetan Dunhuang Manuscripts, contained in: Henk Blezer, ed., Religion and Secular Culture in Tibet (Tibetan Studies II), Brill (Leiden 2002), pp. 289-307, at p. 298.
Glang Su ga ta warma rakshi ta (Sugatavarmarakṣita). One of first 7 Tibetan monks ordained in time of Emperor Khri srong lde brtsan. Padma dkar po, Chos 'byung, p. 325.
