Hi Nate, My husband is a descendant of Nathan A. R. RIDDLE and Mary PIERCE as well. Only through Celia Riddle's brother John M. RIDDLE. I list your ggrandmother as Sela Alicia RIDDLE born 31 January 1861 and married to Buck GRAHAM. Is "Buck" William Graham's nickname? I don't have any other information on them. When were they married? I would love to have the descendants of Celia and William. Are you interested in the descendants of John M. RIDDLE? Looking forward to hearing from you. I think you'll find many (helpful) cousins on this list. Best of luck in your research. Robin L. Poindexter