context: The famous Tibetan Buddhist scholar named Rin-chhen-bjang-po (lifetime: 1-5) is mentioned as the founder of the Alachi Buddhist Vihar. But Roger Goetappa estimates that the Gusum-Brutsegg's Temple, one of the oldest buildings in the monastery, was built in the first quarter of the thirteenth century. On the wall of the entrance to the third floor of this temple, the figure of the Yogis of the Bri-Kung-Baka-Brigud sect is believed to have been painted at the end of the painting 'Jig-Rtein-Magone-Po-Rin-Cheen-Dapal' (lifetime: 8-12). That this temple was built in the beginning of the thirteenth century after the death of 'Zig-Raten-Magon-Po-Rin-Chhen-Dapal.' Teenagers' bro was under the rule of the family.
question: Who is the founder of Alchi Buddhism?