John Brannon was a marine in the 50th (Portsmouth) Company when he arrived in Sydney aboard the Alexander in January 1788 as part of the First Fleet. He served in New South Wales in Captain James Campbell's company until he embarked for England on the Gorgon in December 1791.
* information from Mollie Gillen, The Founders of Australia: A Biographical Dictionary of the First Fleet (1989), p 47
'Brannon, John (?–?)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/brannon-john-30399/text37701, accessed 11 May 2025.