Hello Kay, No, I don't think my ggrandfather, Hector, and your Louisa could have been siblings. Hector was born to Pierre Rufiange Laviolette and his wife Marguerite LaBerge Aug.1822 and he seems to have only two siblings, Marie and Joseph. Hector and first wife, Anne Gamache, definitely had a Louisa, born 1857 in Ile. de Montreal. Let me know if you find out anything further, Regards...Jacqueline.