Marguerite d'Youville was an 18th-century French Canadian widow who established the Sisters of Charity of Montreal, a group famously known as the Grey Nuns. Born in Varennes, she faced significant personal hardships, including the loss of her father, her husband, and four of her six children. Following her husband's death, she dedicated her life to charitable service, managing the General Hospital of Montreal and providing aid to the impoverished. In 1990, she became the first native-born Canadian to be canonized as a saint by the Catholic Church.