William Bull was a marine in the 15th (Plymouth) Company when he arrived in Sydney aboard the Sirius in January 1788 as part of the First Fleet. He served in Captain William Tench's Company at Port Jackson and returned to England on the Gorgon in December 1791.
* information from Mollie Gillen, The Founders of Australia: A Biographical Dictionary of the First Fleet (1989), p 58
'Bull, William (?–?)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/bull-william-30465/text37775, accessed 1 September 2024.