When Hormisdas Therrien was born on 16 January 1873, in Saint-Jérôme, La Rivière-du-Nord, Quebec, Canada, his father, François Xavier Therien, was 46 and his mother, Sophie Charbonneau, was 43. He married Arzelie Guay on 2 April 1894, in Sainte-Scholastique, Deux-Montagnes, Quebec, Canada. They were the parents of at least 6 sons and 5 daughters. He lived in Deux-Montagnes, Deux-Montagnes, Quebec, Canada for about 10 years. He died on 7 November 1941, in Sainte-Monique, Mirabel, Quebec, Canada, at the age of 68.