Re the ship MELLISH newspapers info summary :
Seems to have left Britain possibly from the Downs around 28 Nov 1838
as reported in Sydney papers eg The Colonist of Wednesday 13 March 1839. She had GOVERNMENT EMIGRANTS on board ...
Also ship could be named JOHN MELLISH as per newspaper The Australian Tuesday 12 March 1839
The Sydney Gazette of 14 May 1839 has The Mellish sailed from the Downs on the 17th January, with a cargo of merchandise for this port (ie Sydney) ... Agents : Messrs Hughes and Hosking ... (I think these were Sydney based and that Hosking was related to Hughes ie J T Hughes, who was one of the leading benefactors to Christ Church St Laurence, donated the land etc)... That same paper 16 May 1839 indicates Mellish sailed direct from the Downs to Sydney, but it has sailing date as 10 Jan
Sydney Monitor 5 June 1839 Ships in Port Jackson (ie Sydney) Mellish 500 tons Captain Jones in stream "just arrived" and same paper page 5 lists names of passengers including
Mr and Mrs Cates and two children. Interesting story in that issue ! At Lisbon (she had to get there because of a significant leak) Portugese corvette was burned... HM ships needed to fire at that burning vessel after rescuing its crew (I presume they needed to sink the burning vessel to stop it drifting into other shipping in port)
Sydney Gazette 6 June 1839 has Mr and Mrs Cates and three children (the Monitor says TWO)
There was a special herd of cattle on board as per Sydney Herald of 10 June 1839 for a "spirited colonalist named John Brown ... Ummm... could that be the same John Brown who was a pew holder at St Laurence around that time
.... and lots and lots of hats were part of the cargo too ..... as per The Australian 20 June 1839
Cheers, JM