Hi Sue,
Yes I have pursued this line to a point ..
A long time ago I purchased Mary Butlers death certificate. It revealed that she died on Xmas Day 1855 at Brighton. Thomas Hallinan friend and witness to her death. Certificate says that she was married to John Donovan at Four Mile Wake in Waterford approx 1834. She had lived in Victoria for 14 years which gives an emigration year of approx 1841. Children given as James (13), John (12), Bridget (10), Ellen (

, Thomas (6) and Catherine (2).
I haven't chased this lead up for a few years - might see if I can uncover something. For memory I don't think I could find any record of the marriage in Ireland. I also seem to recall that one of the children was born in the Geelong or Mount Moriac area (where the Crowe family lived).
Any help appreciated - thank you so much I am very grateful.
Anna.