Marie Guyart was a 17th-century French Ursuline nun and missionary who played a vital role in establishing the Catholic faith in New France. Born in Tours, she experienced profound mystical visions from a young age, which eventually guided her to the Americas. After a brief marriage and widowhood, she joined the Ursuline Order, adopting the name Marie de l'Incarnation. She traveled to Quebec to found an Ursuline monastery, where she established the first institution dedicated to the education of girls in North America.