Jeremy, You said you are seeking where in NC your Johnstons came who settled in Green Co., KY. There was a Rev. War veteran Benjamin Johnston from Granville Co., NC who moved in the 1780s to Overton Co., TN, as I recall. The name "Isham" Johnston is associated with this line. Benjamin was married to Charity BOBBITT. I don't know if this will help you or not. I'm looking for my own Benjamin Johnston of the same age from somewhere in SC. Bruce Nichols.