Firmin Leduc was born about 1793. He married Francoise Cote on 18 November 1822 in Ile Verte. Francoise died and Firmin married Praxede Caron on 13 September 1853 in St. Eloi. At the age of 61, he had a son, also named Firmin. He survived his second wife and he married for a third time at the age of 70 to Lucie Bernier on 14 February 1863 in St. Eloi.