I'm researching Robert Gilliland who was born between 1741 & 1750 and who was on the 1790-1820 census records for Rockingham County. Some time after 1826, he moved to Union County, IN. I know that he had at least two sons, John & Josiah, and some people say that a third son was Samuel. I've also heard that he was a doctor. Where does this doctor information come from? Are there any early records available for searching in Rockingham County (besides land records which are online through the ROD)? Thanks.