John McCrary of Lawrence County, Ohio

Looking for any information on John McCrary born around 1780 in South Carolina and married to Margaret unknown. Both John and Margaret are from South Carolina assuming that is where they married and moved to and resided in Lawrence County, Ohio in the 1820 Census. John would have died before 1830 as Margaret was listed in the 1830 census with only several children. My biggest question would be from what South Carolina McCrary family did John descend from? Any help greatly appreciated.