Sorry, Meegan, I think your surmising might be a little off target.
Perhaps I have misunderstood something from above, but Edward William Hooper was dead by 1881, so cannot have gone to Australia. Harriet is shown as a widow in 1881 at 71 Bevois Street – the place mentioned in your previous thread
http://www.rootschat.com/forum/index.php/topic,640734.0.htmlEdward died 14 July 1877 aged 48, he was a Customs Extra Man, previously of the Royal Navy.
Edward William Hooper m Harriet Toms nee Stroud 5 Dec 1858 in Southampton
https://familysearch.org/pal:/MM9.1.1/N6N7-36FChecking the census, 1871 has them in Southampton. Edward born Stonehouse, Plymouth, Devon and Harriet born in Weymouth, Dorset in 1826 or so. Edward is down as a Naval Pensioner
This looks like Harriet’s baptism:
https://familysearch.org/pal:/MM9.1.1/ND2S-DQ2She married Charles Toms in Southampton in 1850. She was a servant in Marlands Place in 1851, but no idea where Charles is. He appears to have died in 1855.
So we’ve been looking way too early for Edward’s birth and in the wrong place! Not sure where the 1798 date came from. William Hooper & Mary Mackrell married in 1785, but could not have produced Edward William in 1828. I think you might be one generation missing.

Nell