Not yet sure if I have 'your' chap so the following is speculative and only gleaned from my armchair today, so it is not in any particular order ...
Church of England baptisms recorded in the St James parish register
- Born 5 August 1837, baptised 1 October 1837, by Rev Robert Cartwright .
Mary Ann Christina, daughter of Henry and Mary Ann Christiana GOOCH, Sussex St, Sydney. Henry’s occupation : Settler.
- Born 9 June 1839, baptised 11 August 1839, by Rev R T Bolton
Henry Mansfield, son of Henry and Mary Christina GOOCH, George St Sydney. Henry’s occupation : Gentleman.
And, there's a Mr Henry GOOCH arrived per Orissa, 20 Jan 1836, Cabin Passenger, a Settler.
Also, from a book which is likely also available on CD:
Gooch, Henry M., and Co., Melbourne.
This business of Australian wine merchants was established in 1858 by Mr. Thomas Bear (now of Rockbear, Whittlesea) at the corner of Queen and Bourke streets, and may be regarded as the actual commencement of the Australian wine trade in Melbourne. In those days the business was very small in comparison with what it is now, wine-growing being then in its infancy, and growers having much to learn from experience. Mr. Blake, of the Irrawong vineyard, Hunter River, N.S.W., succeeded Mr. Bear, and he in turn was followed by Messrs. G. W. and T. G. Knight, the former a well-known florist of Sandhurst, and the latter the present Government resident at Port Darwin. These gentlemen made great efforts to push the wine industry, but with no very great success. They were, however, encouraged by being appointed Australian wine merchants to H.R.H. the Duke of Edinburgh, who ordered fifty cases for his own use on board the Galatea ,,,,,,
Sorry, I don’t have the CD...
https://trove.nla.gov.au/newspaper/article/60507598 Empire 2 April 1862
https://trove.nla.gov.au/newspaper/article/60506842 death of Mr Henry GOOCH, aged 53 years, at East Maitland. (which is plum in the Hunter district of NSW, and a fine wine locality still.
See
https://trove.nla.gov.au/newspaper/article/13070753 SMH 11 December 1862 Confirming the son as H.M. GOOCH, Esq of East Maitland :
Henry Mansfield GOOCH’s death
https://trove.nla.gov.au/newspaper/article/139806588 GOOCH.—On the 12th May 1905, (from heart failure, the result of an accident), at "Larundel," lrving- road, Toorak, Melbourne Victoria, Henry Mansfield Gooch, J.P., aged 65 years.
JM