According to his marriage record, Michel Dugast was born about 1726 to Pierre Dugast and his wife Marie Praud in the parish of Saint-Sebastien.
He married twenty-nine year old, native of Quily, Francoise Durand, the daughter of the late Jean Durand and Francoise LeMarie, at Saint-Similien in Nantes on 1 Jul 1752. At the time, Michel's own mother was also deceased, but his father and brother named Paul attended his marriage.
Michel was deceased by the time his daughter Marie wed Jean Pierre Thibodeaux on 10 May 1785 in Chantenay, France.
Perrine Francoise born 28 March 1753 and baptized that same day at Saint-Similien in Nantes.
Marie Joseph dit Joseph (a male child) born 22 Jan 1755, baptized next day at Saint-Similien.
Marie born 14 Jun 1758, baptized next day at Saint-Similien. She died at the age of five years on 19 August 1763 and was buried the following day at Saint-Symphorien in Treillieres.
Pierre born at Vireloux on 18 Nov 1759 and baptized the same day at Saint-Symphorien at Treillieres.
Rene born at Garambaud on 19 Jun 1761 and baptized the same day at Saint-Symphorien, but died at about 19 hours of age.
Francoise born at Les Dons on 20 Oct 1762 and baptized the same day at Saint-Symphorien.
Marie Dugas born 31 Aug. 1766. She married an Acadian and immigrated to Louisiana.
Michel fils born 22 July 1771 at La Bourg and baptized same day at Saint-Symphorien.