Check Jared's 1860 Federal Census. You'll find an Abigail Shed in the household, age 70. That's just the right age to be his mother, mother-in-law, or an aunt -- had you checked that angle yet? Pair that with the 1860 census stating Edward's birth place as Massachusetts, there are a couple Abilgails of that age with connection to that state. I've started looking, but haven't tied things together yet!
I see though that Sarah Ann's father was from Massachusetts, so maybe she went there to give birth(?).
RE: Mathews You are very welcome. This cemetery is about one or two miles from Athens Memory Gardens so I decided to check the cemetery. I also found a Frank and Bessie Matthews in Alexander Cemetery that I was wondering if they would be Harold's parents. No memorials have been made for them yet. If they are his parents and you would like to make memorials I will add the photo. If you don't believe they are his parents than I will make a memorial later. Thanks