Give Me a Home Among the Gumtrees was an entry to replace what song attributed to John Bull?
Give Me a Home Among the Gumtrees:  At that time the Australian Government had decided to scrap "God Save the Queen" as the national anthem and was running a contest called the "Australian National Anthem Quest" to find a replacement. Give Me a Home Among the Gumtrees:  The "Gumtrees" song was Johnson and Brown's response (it did not win). God Save the Queen: "God Save the Queen" (alternatively "God Save the King", depending on the gender of the reigning monarch) is the national or royal anthem in a number of Commonwealth realms, their territories, and the British Crown Dependencies.
i don't know