Unfortunately, there has been so much speculation about Francis Pace (and I include my speculation about him in the post you replied to), it's easy to lose track of how little is actually known.
As far as I know (there may be proven facts I'm not aware of) -
Francis Pace's year of birth is not known.His year of death is not known.His parents aren't known.His wife is not known.The names of his siblings, if any, are not known.The names of his children aren't known, except that a younger Francis Pace appears to have inherited his land.
Purely stating my opinion, I'm inclined to believe Francis was probably a son of Richard and Sarah Woodlief.If so, that would make him born sometime after 1718 (the date of the only known record which names Richard Pace's wife as Sarah).I agree that would place him as possible father, rather than possible grandfather, of Buckner Pace and/or John Pace (m. Ann Russell).Thanks for the correction.
However, it's equally possible Buckner and/or John Pace (m. Ann Russell) could have been sons (or grandsons) of James Pace who appears in the Brunswick County records in the 1730s, running an ordinary and serving as sexton for St Andrews.Very little is known for certain about James Pace.There are strongly-held theories and assumptions, which can't be proved or disproved due to the lack of documentation.
The (legitimate) sons and grandsons of Richard Pace (d. 1738 Bertie Co NC) are all proved.The DNA results show he was closely related to John Pace (m. Ann Russell) and to Francis Pace (assuming as seems likely that Francis was grandfather of Bignal Pace whose descendant participated in the DNA study).The James Pace who was named as Thompson Bunch's executor was also closely related to these Paces.
James the sexton, Buckner, and the Pace forebears of Willis probably all also came from the same Pace family.But that's speculation, since there's no documentation or DNA evidence to prove it.