Louis George MONGEON was born 1851 in Buckingham,Quebec, and died date unknown.He married Malvina COUSINEAU on 1873 in Angers, Papineau, Quebec, daughter of Antoine COUSINEAU II and Cecile LAMOUCHE. More About Louis George MONGEON and Malvina COUSINEAU: Marriage: 1873, Angers, Papineau, Quebec.