I accidently found a little cemetery today. I was so fascinated I came home and checked it out online and found this link. If this line of the Nesbit family is yours, check out this website and click on the Nesbit Cemetery link. Good luck!
http://www.geocities.com/_morgaana_/index.html

the old home is not too far down the road from there. He was the first (or second in some accounts) sherriff of Gwinnett County. He also was in charge of making "Old Pitch Tree Road", which is now known as Peachtree Road.