I have a copy of the data from the r.c. church in Marieville. There is no surname for her: Berard Gregoire ( Michel & Madeleine Lavoie) m. 3 aout 1838 ...., Marie Louise. Furthermore , I have no Marie-Louise Bédard born around 1810-1820 in this region. I copied you data under the title " inconnus". Maybe Marie-Louise is really Bedard. If you have more info, I would like to hear from you.