Re: William Wynne and Frances Reeds' son, Thomas
I have not yet found proof of parents for John Stone & Richard Stone (presumably brothers) who settled in Lunenburg Co. VA prior to 1748. John Stone with wife Elizabeth were parents of Ann Stone who married John Wynn/Winn in Lunenburg Co. VA. John Stone's will recorded 1782 in Mecklenburg Co. VA left a bequest of one feather bed to daughter Ann Wynn.John Winn & wife Ann were grantors on a deed to Richard Haggard in Lunenburg in 1755, so this couple were married by 1755 though the exact date of their marriage is unknown.
It is frustrating that no records have surfaced to show the prior county of residence for the Stones before their move into Lunenburg. They were in Lunenburg early on -- beginning with the 1748 Lunenburg Tithe List. I'm familiar with the theory you mentioned, but as yet, no proof for it...