I decided to look in the Headright and Bounty Land Grants to see if Francis Wynn was listed, and I found that he was granted land in GA as early as 1766 and 1767 for a total of 500 acres while living in the St. George parish. Eight parishes were greated in GA in 1758 by the Colonial Act Creating Georgia Parishes by the Georgia General Assembly. I you look on the internet for a map of the old GA parishes you will be able to get an idea of where the St. George parish was.
In the 1805 GA Land Lottery Francis Wynne drew a blank, but in the 1807 GA Land Lottery he won Lot 293, District 10 in Wilkinson County. He was most likely not alive for the 1820 GA Land Lottery.
Do you know anything about a Duke Hamilton Wynne? There was a Duke Hamilton living in the same part of GA as Francis Wynne in the late 1700s and early 1800s. My last proven ancestor, James Edwards, married Martha "Patsy" Hamilton and I wonder if there is any connection to her and this Duke Hamilton OR Duke Hamilton Wynne. Marilyn Edwards Wetherington