Brian Anton has done a wonderful job of posting Durrenberger genealogy, which includes Derryberrys, Terrtberys, Dayberrys, etc. You can see it at (http://freepages.genealogy.rootsweb.ancestry.com/~fams/durrenberger. In that extensive genealogy there is no George Derryberry as listed on Wikitree. The posting is incorrect. No proof ever found that he was. It got started years ago and has been carried forth all these years. Please look at Brian's site and see if you can find him there.
