Born in 1591, Saint Louise de Marillac was raised in a monastery in Poissy after the death of her mother. Although she desired to become a Capuchin from a young age, she was discouraged from doing so by her confessor and instead married at the age of 22. However, her husband would soon pass away, after which she made a vow of widowhood. Going on to found the unenclosed Daughters of Charity, de Marillac dedicated her life to serving the poor. She would be canonized in 1934, over 250 years after her death.

Sources:

Dinan, Susan E. "Overcoming Gender Limitations: The Daughters of Charity and Early Modern Catholicism.” In Early Modern Catholicism: Essays in Honour of John W. O’Malley, S.J., edited by Kathleen M. Comerford and Hilmar M. Pabel, 97–113. University of Toronto Press, 2001. http://www.jstor.org/stable/10.3138/9781442674202.12.

Franciscan Media. “Saint Louise de Marillac.” Franciscan Media, August 6, 2024. https://www.franciscanmedia.org/saint-of-the-day/saint-louise-de-marillac/.

Monsieur Gobillon. The Life Of Mademoiselle Le Gras: Foundress and First Superior of the Company of the Sisters of Charity Servants of the Sick Poor. London: Anvil Printing, 1984. https://via.library.depaul.edu/gobillon_eng/1/

You can read Saint Louise de Marillac's pamphlet through JSTOR:

Saint Louise de Marillac: Canonized March 11, 1934