You can find your families at this site .. if at end of page check for more children on next page .. Joseph Fix has them on next page. These are actual census pages and take awhile to load .. be patient. I did not check for Rivard .

http://envoy.libofmich.lib.mi.us/1870_census/

My daughters line :
1. Joseph & Hannah (Sueter) Fix (born France)
2. Mennard & Sophia (Bordeau)Fix had second wife Mary Ursula Heisier and had 12 more children. He born France.
3. Monrod Lot & Regina Louise (Schell) Fix (removed to Oregon) 13 children
4. Monard Michael & Laura Mae (Kisner) Fix
5. my daughters Grandfather Living in Washington State