Re: Marie Melodie Fontaine dit Bienvenu
I don't have the marriage, but I have a possibility.
I have a Melodie Fontaine, daughter of Pierre Fontaine dit Bienvenu and Genevieve Bourque. She was born and baptised in Jul-1822 in St-Charles-sur-Richelieu, St-Hyacinthe, Quebec.
This is from the IGI, so data is questionable. However, it may help focus your search for marriages in the area.