My opinion is (from memory though but hopefully all is in this thread)1901 and 1911 Murphy nephews link to Julia1891 and birth records Murphys with mmn O’NeillMary Ann O’Neill (marriage) and mother Julia O’Neill (death) both have Sefton Square as an address.John O’Neill, Police Officer found with family including Mary A in 1861.The children have mmn McNamee in births and baptisms.I think that this is good evidence for tying all this together.To be absolutely sure that Mary Ann who married Michael Halligan is not the one from the above family, you would need to check her father John’s occupation from the marriage certificate.