I know nothing about sources in early New England, but I do know that this sort of name repetition could and did happen, that is, it is entirely possible that this is two different couples with the same names. (I have a great-something-grandfather who married a woman with the same name as his mother. Thankfully, he wasn't named for his father. On another branch, I have great-something-grandparents who lived in the same small village as another couple with the same names. The saving grace there is that the other couple was older, and had their last kids about five years before my ancestors had their first ones.)