I have found various information on the Barreaus, via various sources, either through collaboration with fellow genealogists, or via online research. One great source has been the South Australian newspapers, via the wonderful National Library Of Australia website Trove. As the Hamiltons and Barreaus were very early residents in Adelaide their names often appear in the early newspapers.
Go here for the collection of newspapers items I have found on the Barreaus.
I have collated the information I have found to prepare some biographical information on the Barreau family ancestors. Please click on the links above for each individual person.