I'm trying to link Marcel Despres and Francois Xavier Olivier Despres. I believe Francois had a son Marcel born abt. 1840. m. Suzane Corbin. I do know that Marcel had a son named Marcel b. 1868 m. Anastasie St. Germain and has a son Marcel b. 1998 m. Gertrude Dumond and they had a son Maurice married to Florence Bouchard and they had a son Alton Deprey. At some point with Marcel married to Gertrude the name changed from Despres to Deprey. If I could find a link or confirmation that would make Fracois my 5th ggrandfather. If someone could also explain why our name changed from Despres to Deprey, Duprey I would greatly appreciate the help.