I have located another Sanford Jackson Stafford in Lewis County, Kentucky. He is the son of Thomas and Sarah E (Stamper) Stafford and he married 1) Sylvenia Catherine Morgan and 2) Dora Ann Hale.
So, if the Sanford Jackson Stafford, son of Henry and Sophia (Stone) Stafford, wasn't your Sanford Jackson Stafford then, perhaps, this one is.
Good Luck!