Vairotsana was the greatest of all Tibetan lotsawas. Together with Padmasambhava and Vimalamitra, he was one of the three main masters to bring the Dzogchen teachings to Tibet.
Vairotsana was born into the Pagor clan, and was sent to India by Trisong Detsen to study with Indian panditas. He also travelled widely in China, Khotan, Nepal, Shangshung and elsewhere. He was one of the original seven monks ordained by Shantarakshita. (Source: Rigpa Wiki)
