Hi Tim -- Hadn't checked the forum in a while, so apologies for the delayed reply.Sounds as if you have your downlines, and Startling Frank was certainly one of Michael's sons.Unfortunately, we don't know much beyond Michael.
There's a small group of us trying to research Michael's parents, but it's hard going. At this point, the two best bets, and the reasoning behind them are:
1) Miles Abernathy who married Usely Bracher (Ursula Bradshaw).Reason:A William Larkin Bradshaw was surety on the marriage bond of Michael to Isabella West.
2) Miles D. Abernathy, m. Susannah Parr (various spellings).Thing is, when Miles D. married Susannah, he was in his mid-30s. Chances are good that he might have had an earlier wife, possibly named Amy.There's some interesting census data for 1810 that somewhat supports this theory.
At any rate, absolutely nothing is proven at this point re: Michael's parents.If I can help you further, please email me directly.