Louis Richer and Louisa Pelletier were my great grandparents. Louis (1876-1959) was a son of Jean-Baptiste Richer (1832-1910) by his second wife Angèle Charlebois. Another great grandfather was Amédé Richer, a son of Jean-Baptiste by his first wife Tarcille Deschamps.
This Jean-Baptiste was a son of the Jean-Baptiste and Thérèse Dupras that André gives in his recent posting. I agree with his list back to the original Jacques Éricher dit Louveteau. I know also several of the side branches of the tree.
Where do you fit in the Richer family? Perhaps we can exchange information.