↑ J. R. J. Grigsby, 'Duffy, John Gavan (1844–1917)', Australian Dictionary of Biography, National Centre of Biography, Australian National University, https://adb.anu.edu.au/biography/duffy-john-gavan-3451/text5267, published first in hardcopy 1972, accessed online 19 September 2022.
Mr John Gavan Duffy, the eldest son of Sir C.G. Duffy, M.L.A., was married on Friday last, in SS. Peter and Paul’s Church, Emerald Hill, to Miss Callan, daughter of the late Dr Callan, formerly health-officer at Queenscliff.
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