JacquiQ on Family Tree Circles

I have had a brick wall for quite a few years on this line. My ancestress Mary Anne Fennell married Michael Walsh in Bathurst in 1837. I believe that he was a bit older than her and he died in 1858. I have not been able to trace Mary Anne's death or a remarriage. There were 3 children who lived long enough to be named - Micheal (b1842), Elizabeth (Eliza) Mary Theresa (1843-1925) and Mary Anne (1848-1923). I can trace Eliza and Mary Anne (Jnr) but not Micheal. I have no idea about Mary Anne (Snr)'s parents or place of birth. Any leads greatly appreciated.