My g-g-grandmother was Hannah Longstreet Blackstone. My grandmother was Alice Marie Riddle, daughter of William Edward Riddle (son of Hannah and Isaac) from Mt. Pleasant. I am still looking on more info on the Blackstone line if any of the Riddle cousins have any information. I think that Hannah's father was Richard Blackstone and I have recently found a Richard Blackstone that lived in Mississippi after the Civil War. I believe this was one of Hannah's brothers that supposedly died in the Civil War. I know this Riddle line is well documented but I would enjoy hearing from any cousins. Thanks, Connie Wallace Perdue in Austin, Texas