Ngülchu Thogme Zangpo
‘’’Ngülchu Thogme Zangpo’’’ (Wyl. dngul chu thogs med bzang po] - wrote a famous commentary on the Bodhicharyavatara.
According to Khenpo Ape, the three—Butön [bu ston], Lama Dampa Sönam Gyaltsen Pal Zangpo [bla ma dam pa bsod nams rgyal mtshan dpal bzang po] and Ngülchu Thogme Zangpo [dngul chu thogs med bzang po]—were students and teachers of each other.