François Dumas was born about 1641 in Nanteuil en Vallée, Angoulême, Angoumois, France.
In the 1666 census of Québec, François was a 24 year old mason working for Claude Charron.
He married Marguerite Foy (Defoy, Foye) on July 5, 1667. The contract was written on July 5 1667, and signed by the notary Rageot.
Marguerite was the daughter of Pierre Defoy and Catherine Blanchard.She was born about 1638 in L'Hermenault, Poitou, France. She was a fille du roi.
On February 26, 1669, Laval, granted François three arpents on the southern side of Île d'Orléans.
François and Marguerite's children included:
Francois Dumas (1669),
Charles Dumas (1671),
Marc-Antoine Dumas (1672),
Jeanne Dumas (1673, married Louis Marceau),
Gabriel Dumas (1674),
Catherine Dumas (1677, married Louis Cochon-dit-Laverdiere), and
Marie Dumas (1680).
Francois died on February 24, 1714 in St. Laurent de l'Île d'Orléans,
Marguerite Foy died on January 12, 1718 and was buried two days later at Saint-Jean.