1. find all Joseph Palmer marriages at Joseph's Kenn, Devon, England, residence location.
2. find all Joseph Palmer marriages to a woman with the rare surname Bodley.
3. find one Joseph Palmer marriage to a woman named Mary L from Farringdom; this marriage is for Joseph Palmer #2 who in 1861 was an uncle and a school teacher.
4. based upon the results of Source 1484, accept only the resultant marriage records for wife's named Sarah or Betty
5. verify that all christening dates of children found from Source 1484 are closely after the matching marriage dates.
6. assuming that Joseph Palmer married twice, verify that all marriage and christenings dates remain reasonable.
7. verify that all christening dates were within the normal child-bearing years of the mothers.
8. with the above tight selection criteria, be aware that other wives and cildren could have been missed!

Found online at LDS site https://familysearch.org/.