Sheila, Your W.H. Stringfellow who was a member of Company G, of the 29th Georgia Cavarly Battalion made it through the War. His unit along with thousands of other soldiers were surrendered in Tallahassee, Fl on May 10, 1865. His official parole date was May 20, 1865. According to his CMSR's he was sick in Camp for a time and he had special guard duty in Northern Florida, just after the battle of Oceans Pond. I would encourage you to get with Alan Pitts if you have NOT done so already and get a copy of his CMSR's.
Sometimes you need a little luck in going after your ancestor and you might have got some. There is a gentleman here at the Georgia Archives in Atlanta Georgia who is a lead reseacher. His family tree is also the Stringfellow's. I spoke to him for a short while and he said to contact a man named Hugh Stringfellow. Hugh knows more about the Stringfellows then anyone else according to this lead researcher.
There was also two W.H. Stringfellow's located in the 1850 census. One lived in Early County Georgia, probably yours and the other lived in Union County South Carolina. The lead researcher tended to think that your Stringfellow came from Barnwell, South Carolina. Having lived in South Carolina the two Stringfellow families are more than a 100 miles apart.