Yes Theresa. I know exactly what you mean. I have family in what was once Fish Pond, in Barnwell County. Fish Pond later became part of Bamberg County when it was formed but the actual town no longer exists. With the help of older relatives, I have been able to find the location and when I visited, I saw the remnants of houses and fireplace bricks. Unfortunately, I don't know where in Barnwell Dunbarton is either nor are the surnames you mentioned familiar to me. If I come across anything I will post it. Good Luck.