Isaac Harris was a seaman aboard the Alexander when he arrived at Sydney in January 1788 as part of the First Fleet. He was discharged at the Cape of Good Hope on the return voyage.
* information from Mollie Gillen, The Founders of Australia: A Biographical Dictionary of the First Fleet (1989), p 161
'Harris, Isaac (?–?)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/harris-isaac-30898/text38261, accessed 3 June 2025.