Wiki page has him coming back to England 1810.
Then to Ireland after that.
Previously;
In September 1804 Foveaux left Norfolk Island for England to attend to his private affairs and seek relief for the asthma that affected him.
He returned July 1808.
He pursued an uneventful military career after that, rising to the rank of lieutenant-general in 1830.[4] In 1814 he married Ann Sherwin, his partner since 1793, and they had a daughter born in 1801.
He died in London on 20 March 1846 and was buried in Kensal Green Cemetery.
1814 Marriage is on FreeREG Derby, Derbyshire
+ on Anc Bachelor/Spinster
So if Daug born 1801 was Ann Sherwin with him in Australia?
