What is George's brother's name? I think the James (1752-1823) you referenced is my ancestor. I have never been able to determine whether his father is John or George or some other unknown Malcom! My James had children Peter (my ancestor), William, Catharine, James, and Jane. Does that connect? If so, I would appreciate any information you have on the family genealogy.
Peter, Catharine, and Jane, migrated to Ohio/Indiana with their families.William stayed in Virginia (became W. Va.) They were not part of the Malcom line in Georgia, which seems to dominate the research boards – although I think they could be cousins.