I show an Elsie married to Abiel Sr. I may have transcribed it wrong from the information from my second cousin.
You may want to recalculate your Alice's age in 1865. If she was 20 when she married ( approx 1728 ) she would have been born about 1708. That would have made her about 56 or 57 in 1765. I don't think she was going to have another child at that age. I show her last child being born in 1750
Was Elkanah Wilmarth a brother to John Wilmarth who married Phebe, Abiel Sr.'s daughter???