I haven't a clue if this is the right George but there is a marriage on the Qld indexes for a
George Norman METCALFE in 1939 to a Gwendoline Mary DUELL It was not in Brisbane but the index only signifies two options Brisbane "B" or Country "C".
No ebola here, thank heavens, not interested in Christmas Cards, nor flowers. The privacy laws in this country are going to be difficult to your search as available Birth registrations only go up to 100 years ago, IE April 1915 possibly a mention on "TROVE" archived newspapers. Just google that up!
After a quick read of your former post, is his name METCALFE or BRADNUM?
As for deaths the index shows one for the George Norman in 1963 but parents are wrong Norman and Alice. There is another death in 1969 of a George Samuel with Parents William and Mary Jane.
Sorting out all the British people who owned all the Sheep farms in Australia is going to be difficult, seems like everyone who came over bought one or more.

I wish some could have just gone to work on one.

Neil