There is a marriage record for M.L. Riggs age 25 and Mary J. Davis age 17 in Johnson Co. on July 15, 1883, Book P Page 536. It's possible the J could have been mis-read for an I. I am also looking for a Mary Davis born around 1868 in GA. Father (James) born TN and Mother (Martha) born GA. Do you know the names of any of Mary's siblings? If there seems to be a connection with your family would love to share information. Neosha