John Hamilton Dempster, was an able seaman aboard the Supply when he arrived at Sydney in January 1788 as part of the First Fleet. He was discharged at Portsmouth on 8 May 1792.
* information from Mollie Gillen, The Founders of Australia: A Biographical Dictionary of the First Fleet (1989), p 104
'Dempster, John Hamilton (?–?)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/dempster-john-hamilton-30737/text38081, accessed 29 March 2024.