My father 15 years ago began researching his mother's family history. Her name was Mildred Cammack. Her grandfather was freed by a will written by David Cammack, Jr. in Tuscaloosa, AL. David Cammack, Jr. originally lived in Fairfield, SC. On several census's, I found a David Camak, Samuel Camak, and James Camak with David Cammack Jr. Does any of these names ring a bell?
I have the census on CD. On the 1820 Census he is the 6th one down. On the 1830 Census he is the 11th one down.