Looking up on line the 1881 Census IOM I found

John Cain
born: abt 1842
birth place: Marown, Isle of Man
Head (widower)
Place of residence: Ballaglay, Malew, Isle of Man, Isle of Man

his children: Ann J (b abt 1864), Christian (b abt 1867), and possibly John (b abt 1871) would be listed in the 1871 census.
the other childrenb listed in the 1881 census are: Eliza G (b abt 1878), Fanny (b abt 1874), Louisa (b abt 1876), John R (b abt 1881).

This John is the right age and born the right place (Marown) for a John Cain I am trying to trace. My John Cain's parents were Christian and Thomas and he had a sister Ann (and a sister Jane). I have information about John Cain's parents and siblings.
I'd like to know who the wife of the John in the 1881 census is. Also, would anyone else be researching this family?
Does the IOM have a family naming pattern?