'Brenan, John O'Neill (1821–1869)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/brenan-john-oneill-28412/text, accessed 6 May 2025.
18 December,
1821
Dublin,
Ireland
4 August,
1869
(aged 47)
Balmain, Sydney,
New South Wales,
Australia
Includes subject's nationality; their parents' nationality; the countries in which they spent a significant part of their childhood, and their self-identity.