According to the Genealogical Dictionary of the Marcotte Family (by Father Jean Marcotte), Marguerite Marcotte m. Joseph LaFrance, on 13 Jan 1806, at St. Vincent de Paul Laval. Marguerite was the daughter of Francois Marcotte and Francoise Belanger.Marguerite had a sister, Francoise who married Louis Labelle in 1797. According to the same book, however, Francois Marcotte was the son of Francois Marcotte and Marie-Ursule Filiatrault.
Francois Jr. married Francoise Belanger, 27 Jan 1782, at St. Vincent de Paul (ile Jesus), PQ. However, this Marcotte-Filiatrault line cannot be the correct parentage of the younger Francois, as the dates do not work, at all.