Thank you Sue for more information. A relative in England sent me the Census information of the family and it appears that this is 'my Mary' I had earlier given away searching for her in shipping lists because documents in Australia have her as McCart, McCarthy, even Downie (stepmother's name). No marriage certificate (9 children produced). Death certificate of Mary: James McCart, father, gardener. No info on mother. Info supplied by son (not always reliable when guessed at by children). My letter to Editor of IOM Family History Society Journal Vol 9 No 2 1987 gives you an idea of the contradictions of information supplied by Mary on her children's birth certificates. She has led me a merry dance, but I feel close to her as a result.