It's odd that though he appears on the 1880 census, he doesn't appear on the others. Is he related to William Lenox b. 1815? My family still lives in that area if you need us to visit a graveyard or something. Did he own land in Waterford? I know where I can get a map w/ the plot if he did. Do you know where he came from or where he went to?
P.S. According to the census, he was married to a Nettie.