OK, so I am right in thinking that Joseph's father John takes a second partner/wife, Ann Cross, his former partner/wife was Elizabeth Cusic (or Cusick), and is the mother to all of John’s children and
her mother, and John's first Mother-in-law, is also an Elizabeth Cusic.
"Preserved Killick" suggested earlier that John and Elizabeth may not have married, and the time of the census which introduces Ann Cross she and John were also were not married. Would this not be unusual? Is Ann of English or Irish descent?