Sue, I think you will find their names were "Latinised" in the church registers rather than Anglicised in real life.
Richard HEANEY seems to have been the Chief Officer on the
Hibernia which arrived in NSW in 1819, and he was given a land grant in Tasmania.
A few more interesting articles. The first may not be related, but is the right age. The second shows that there was a son named James, but whether Jacob and James are the same person...?
1845
Caution to Apprentices - James Heany, fifteen years and a-half old, under indentures as an apprentice for eight years (five and a-half of which are unexpired) to Mr. Joseph Sly, upholsterer and cabinet-maker, Pitt-street, was brought up at the Police Court, yesterday, before Messrs. Stirling and Campbell, charged with absconding from his indented service. The indentures being put in and proved, Mr. Isaac Nichols, inspector of the Water Police, proved that on Saturday last he took the prisoner by warrant, from on board the
Australian whaler, then about to proceed to sea, he having previously been entered as a sailor on the books of the said vessel. The prisoner made no defence, and as it appeared by his indentures that the present was the third time he had been before the Court for a similar offence, he was sentenced to be confined in the cells for three days, and fed on bread and water during such confinement.
http://nla.gov.au/nla.news-article128789661851
IF JAMES HEANEY, son of the late Captain Heaney of Van Dieman's Land, and formerly resident in Sydney, but last heard of at Mount Emu, will communicate with his brother, Robert Heaney at the Lord Nelson Inn, Hunter-street, Sydney, he will hear of something to his advantage. Any person giving any information of the above James Heaney to his brother, will confer a great obligation on both.
http://nla.gov.au/nla.news-article12924082Debra