Wow, I thought I was the only one digging into this much detail in 1700's Pennsylvania! The Chester County Wiley's are giving me an ulcer... there are so many similarities in names, but the dates and places are always off. My documentation to PA include David Jr stating he was born in PA on a Census, and his first land purchase in Ohio giving Centre Pennsylvania as the location he came from. I have a David Wiley family in Northumberland in 1800. (I think that's David Sr as head of household, with David Jr as one of the 16-25 year olds) And David Jr in Haines, Centre, PA in 1810, a couple years after he married.
The Chester County Wileys are many, and firmly established there, so I really don't think they're my family - but they could be siblings or cousins of some sort to David Sr. Even the "Thomas Wiley" there is haunting me, as there is a Thomas Wiley in Hanoverton OH in 1830, but not before or after, and I don't know if he's a sibling/cousin of David Jr or not.
The only family history I have to aid this is the story that our Wileys came from County Cork, and the Chester County Wileys are from further north.
That's probably way more info than you need to know, but I think they're the ones coming up in your last round of finds. I'll do some more digging in the PA Archives... maybe there's something there.
Thanks, Rita!