Songtsän Gampo
It is said that, during the reign of Songtsän Gampo (605 or 617? – 649), Palden Lhamo outdid all the other protector-deities in her promise to protect the king's Trulang shrine. She presented an iron cup and pledged "Erect an image of me, and I shall protect this royal shrine from any future damage by humans and "mamo" demons!' She is also said to have advised Lhalung Pelgyi Dorje to kill the anti-Buddhist king Langdarma in 841 CE, and is described as the 'Dharma-protectress of Lhasa'.