I'm pretty sure you've got the right one!
The Argus included his obituary (as well as a death notice) 6 May 1941, but it's almost identical to the one from the Tasmanian paper, and also doesn't mention the exact DoD:-
http://trove.nla.gov.au/newspaper/article/8173857
http://trove.nla.gov.au/newspaper/article/8174009
BIRTHS
O'HARA - On the 9th January, at Alma-road, St. Kilda, the wife of Dr. O'Hara of a son.
http://trove.nla.gov.au/newspaper/article/199360180 (10 Jan. 1879)
Oh cool. Hadn't spotted the birth notice before.