Sorry, I have no information on Mary. She is 56 at the time of her marriage to my 2nd great-grandfather, Henry Harrison Melton. They were married 12 Aug 1886 which would make her born around 1830. The copy of the application I have clearly states "Ecton" but that could be the way the record taker heard it. Henry was born in Pulaski County, Kentucky in 1818, maybe there is a connection with the Meltons & Davises that go back further.
Sorry, wish I had more info. Good luck & Happy New Year!