As of 1928 she was still living at the family home at 16 Sullivan Ave. Her parents both passed away in 1928 and it appears that at some point she left Thorold and moved to Montreal, Quebec where she became a nurse.
In a 1940 Voter list she was listed as being a nurse at Douglas Mental Health University Institute at 6875 LaSalle Blvd in Montreal. Again in 1949 she was listed as a nurse at 1963 Bayle St. In 1952 she was mentioned in her brother Patrick's obituary as living in Canada and in 1962 she was mentioned in her sister Cicily's obituary as deceased.
Details of Mary Catherine's adult life have been elusive. Would still like to find where she had her education, when and where she died and where she was buried. Also a photograph would make my day!
Edward J. Manley (1854-1933)
Margaret Boylan (1857-1894)