She is listed as Marion Elizabeth on a letter accompanying the photo, but as Elizabeth Marion in multiple U.S Censuses and other records.
Elizabeth was the wife of Thomas Milton O’Kelley. She grew up in Madison County, Georgia, and lived there and in Clarke County, Georgia. She is buried at Chandler Cemetery #3 in Madison County.
Elizabeth Marion Chandler (1861-1909) is 3rd great-grandmother of MKS in the Spratlin branch.
References:
[1] KMS Family Genealogy Digital Archive, Jacqueline Anne Knight Spratlin collection (photograph).