I know very little regarding Marie Chiampou, but am willing to share. What I do know came from the recollections of my uncle in Dalhousie, NB.
He simply stated that Marie Chiampou was the wife of Amos Chiasson.
I can tell you from my own research that Amos Chiasson was born about 1922 to Peter Chiasson and Esther Losier, my great-grandparents. I'm told Amos and several of his siblings raised families in the Dalhousie area.