The South Carolina in the Civil War Message Board

John Wilson Johnston

I am looking for info on this person I believe may be my gg-gfather. I am not sure of the "Wilson" as middle name. If family legends are correct he was from York County, SC, & later moved to Sumter County, FL, where there is a "Capt." John W. Johnston on the 1885 census living in the household of my ggfather, John Calhoun Johnston (b. 1850).
Any info on him or his family would be greatly appreciated.