I have very little in my files on Enoch Stringfellow. I have records of his apprenticeship in King George Co., VA. I do not believe that Enoch ever lived in Stafford Co., VA. If he did, there are no surviving records from the time he lived there because he was in Onslow Co., NC by 1769 and my last record for him is in 1771, when he was in Bute Co., NC.
I made a quick search of the 1820 census for Georgia. There were only three entries in the index: Robert and Arney in Greene Co., and G. (George) Stringfellow in Jasper Co., GA. I also found a Benjamin Stringfellow on the same census page as Robert. Benjamin was in the 45+ age category and listed next was Robert Stringfellow, in the 26-45 age category. I presume your James R. Stringfellow who married into the Hicks family was this "Robert" Stringfellow. FYI, the name J. R. or James R. for James Robert was common among several of the Virginia branches of the Stringfellow family.
In the 1830 census for Georgia, I only found one Stringfellow listed in the index and that was George, age 50-60 (born 1770-1780). Since Enoch Stringfellow was born 20 October 1743, this George Stringfellow was of the correct age to have been his son. The Benjamin and Robert Stringfellow listed in the 1820 census of Green Co., GA might also have been sons of Enoch, but I have no evidence to prove these relationships.