Are you able to access Australian Ancestry records? There is a good deal more relating to the birth of the children, who seem to have scattered around the various States in Australia. If you can't access the records, I am happy to look them up for you. You may also get good info if you use Trove (free digitised Aus newspapers)
https://trove.nla.gov.au/newspaper/
OH has a Gould ancestor who came to Aus from Bucks ca 1850, also seeking his fortune on the Bendigo goldfields and ended up scraping a living on a smallish farm, which was likewise named after the English estate of his grandfather....lots of English emigrants clung to the memories of their homeland in that manner.