Proulx was born in Saint-Eustache, Quebec, Canada, on 27 February 1906, to parents Godefroy St-Louis and Herméline Landry. She had one older brother, and 14 younger siblings.
At some point, she married Georges Proulx of Saint-Joseph-du-Lac, son of Adélard Proulx and Delisca Legault. They were married for 69 years until her husband’s passing.
Proulx passed away in Deux-Montagnes, Quebec, Canada, on 23 October 2016, at the age of 110 years, 239 days.
At the time of death, she was the second-oldest (known) living person in Quebec, behind Louise-Anna Turcotte.
* “102 ans! FÉLICITATIONS!” – Sainte-Marthe-sur-le-lac, April 2008
* “105 ANS, HOMMAGE À MADAME GERMAINE ST-LOUIS proulx” – Sainte-Marthe-sur-le-lac, March 2011
* “PROULX (NÉE ST-LOUIS), GERMAINE” – Résidences Funéraires Goyer