When Jean Baptiste Boissoneault St. Onge was born on 13 August 1752, in Saint-François-de-la-Rivière-du-Sud, Montmagny, Quebec, Canada, his father, Joseph Boissonneau, was 30 and his mother, Marie "Marguerite" Blais, was 24. He married Marie Elisabeth Buteau on 13 January 1777, in Saint-François-de-la-Rivière-du-Sud, Montmagny, Quebec, Canada. They were the parents of at least 1 son and 1 daughter. He died on 1 April 1822, in Sainte-Marie, Beauce, Quebec, Canada, at the age of 69.