I too am a descendant of Samuel Fergus b abt 1763 d 4/4/1853 at age 90 and our family has always traced our roots back to John (1717). This also is in accordance with J.H. Beers Commemorative Biographical Record of Washington County,Pennsylvania (1893)(which is on line)and I believe was the basis of my great aunts membership in the DAR. Hugh and Mary are family names but as far as I know we have no Roberts. I too am confused.