Hi. I am Crystal. I have a little bit of information for those looking for more. I dont have anything on the Rivard family since they are expansive. (my step dad is Rivard - but they are American Indian) But for the Bethui I will give you what I have..
Antoine Bethuy b. 1775 Spouse:Catherine Magdeline Josette Bertrand
They had 5 children that came over from France with them
Antoine (Anthony) Bethui Louis Bethui Magdelene Bethui Francis Xavier Bethui Alexander Bethui
I had a whole bunch of other information awhile ago, but have since moved a couple of times. I am working on compiling it all up again. If anyone would like to link up please email firstname.lastname@example.org with Geneology in the description