There was a Joseph Holt, carpenter, died in Melbourne on 8 April 1852 aged 40. There is no further information in his death certificate about any relatives.
'Holt, Joseph (1814–?)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/holt-joseph-26737/text34367, accessed 28 September 2023.