Are you still looking? I just stumbled on your message today 23 Jan 2013!! Go to the Federal Census for 1880 and search for Sophia J. Jackson. She was born 1873 in Louisiana and is living at Hickory Flats, Calcasieu Parish. Her mother is given as Louchinda Jackson (born in Louisiana) and her father is William J. Jackson (born in England). There is a lot of information available regarding Sophie.