Ok, here is something that I can't seem to find the records I saw yesterday.
John Simcock and William Cannon were Buyers on a piece of property that I believe was purchased from Woodson or John Cannon.
I also remember seeing that a John Simcock was the illegitimate son of someone and he was associated with Grayson, Va. and yes Quakers, but I can't remember who. But his connection would go back to New Jersey or Pennsylvania believe he was associated with William Penn in some manner, but not as a relative. I also saw that they came as Quakers, but ended up involved with Baptist. This family is associated with the Maris family and Bryants. and some how the Maris line is associated with a Jane Rudd and John Rudd. Maybe this will help in tracing? As a matter of fact there appears to be 3 or 4 John Simcocks in this Simcock line. There was a documentation that I believe you posted that showed John married to a Mary. I believe there is a Mary Waln and another Mary somewhere in this line.I also believe same documentation mentioned a Bryant. so far no mention of Simcock though.