I have just come across a Mark DEAS in the 1850 SC Census, Chesterfield area: Mark Deas age 28; Rebecca age 48: John A. Threatt 19; Pete S.(?)Threatt 16 and Benjamin F. Threatt 4. My connection is to John A. Threatt and I am trying to find the connection to this DEAS family. Due to age listed in this census, I believe this is my John A. Any help appreciated.