The Mason /Dixon line solved the Maryland /PA. border dispute in 1787.These things take time to clear up. Maryland did claim southern Franklin Co. before then.As well Pa. claimed well into Maryland.The Mason /Dixon western extension past Washington CO. was during the Civil War.Just to give you an Idea.I have researched this area for years and there are only a limited number of Elliott's in the area in this time frame. The majority had at least one William.I have the info that might help on another computer.Were your Elliott's Presbyterian? Most of the Elliott's of this area were Ulster Scots.