I am also looking for info on this couple. I found the obit for Catherine in the souther patriot. My grandmother was Emma Jane Ross d/o Oliver Camp Ross and Nancy Henson (both from greenville). His father was Philip (also listed on some papers as JP Ross). In 1850 the census shows Nancy's family as living next door to her uncle John. In the obit for Catherine it's says that John Henson who lived near by died at the same time. It also states that her husband James had been a native of Scotland but had lived in Greenville for many years.