Jean Mance was born in Langres, Champagne, in 1606. In 1641, she left France to go to Canada, and was part of the first expediition sent to found Ville-Marie. Thus, along with Paul de Chomedy, Sieur de Maisonneuve, she was the co-founder of Montréal. In 1642, with financial support from Mme De Bullion, she founded the Hôtel-Dieu de Montréal. Through her initiative, the first nursing nuns arrived at the Hôtel-Dieu in 1659. Jeanne Mance died on June 18, 1673, in Montréal, at the age of 67.