[2][3] She was born Marianna Giuliani 12 December 1875 in L'Aquila, Italy, and joined the Franciscan Missionaries of Mary.
The de facto orphans were taken in by another family and her uncle suggested that she might join the Franciscan Missionaries of Mary.
[4] In 1899 she was one of a group of seven sisters from the order who went to Taiyuan, China, arriving on 4 May 1899, to set up an orphanage at the mission there under bishop Gregorio Grassi.
She argued that they should be allowed to stay when the level of threat to the community rose and the Bishops advised that the sisters should change into local clothes and escape.
[4] Marie de la Paix and her six fellow sisters were referred to as the "Martyrs of Shanxi" and it was said that they had been beheaded.