David Duncan (c.1770- ) was ship's boy aboard the Lady Penrhyn when he arrived at Sydney in January 1788 as part of the First Fleet.
* information from Mollie Gillen, The Founders of Australia: A Biographical Dictionary of the First Fleet (1989), p
'Duncan, David (c. 1770–?)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/duncan-david-30789/text38135, accessed 29 March 2024.