I have some informations about Paul Messier and Louise Scott (Sophie).
The parents of Paul: Jean-Baptiste Messier, borned 16-03-1802 at parish Notre-Dame-du-Rosaire, St-Hyacinthe, married 30-09-1833 at parish St-Pierre, Sorel, with Catherine Vandal, daughter of Louis and Marguerite Bibeau.
Children of Jean-Baptiste Messier and Catherine Vandal: Narcisse, Paul, Rose, Catherine, Jean-Baptiste (and more in USA).
Paul Messier: borned 17-04-1836 parish St-Pierre, Sorel, married 19-09-1859 at parish St-Pierre, Sorel, with Sophie Scott, daughter of John ans Angèle Dasylva. No children in my records because he was gone in USA.