When Pierre Henri Lebrun was born before 1838, his father, Pierre Lebrun, was 30 and his mother, Julie Boisseau, was 25. He married Rosalie Brouillet on 20 July 1857, in Saint-Hilaire, Rouville, Quebec, Canada. They were the parents of at least 3 sons and 3 daughters. He lived in Montreal, Quebec, Canada in 1881. He died before 1958, in Salaberry-de-Valleyfield, Beauharnois-Salaberry, Quebec, Canada, at the age of 119.