- Occupation Political candidate
Mary Georgene Hennessey stood as a Democratic Labor Party candidate in the New South Wales Legislative Assembly elections for Rockdale in 1971. There is no entry for her on electoral roll and she can not be found in the Ryerson Index or on Google.
- Putting Skirts on the Sacred Benches: Women Candidates for the New South Wales Parliament, Australian Women's Archives Project, 2006, http://www.womenaustralia.info/exhib/pssb/home.html
- Trove: Hennessey, Mary Georgene, http://nla.gov.au/nla.party-746067