Yeshe Tsogyalworked very closely with Padmasambhava when Buddhism was first introduced to Tibet. She is credited with becoming the first Tibetan to reach enlightenment. (Padmasambhava was not a Tibetan. 

This book of all the hardships in her life, her realizations, and her work with Padmasambhava. Keith Dowman says this biography is a great biography which is perhaps only second to Padmasambhav's 100,000 Songs.