I've since posting that the line of Robert and Francis Fulton (brothers) is not in my wife's family. Her Robert Fulton married to Bridget buck was a son of Robert Fulton b 1811 Ireland and wife Agnes (1861 census). Although a later census (1871) says wife was Nancy (?). Robert Senior is living with son Robert at time of 1881 census, listed as 70 and a widower. It seems this is not the line connect4ed to Francis. If you can shed any light on the issue please let me know.