This search took about 24 yours in total but some conflicting information made the search for the family of Eric John McCormack that bit harder.
Eric's WW2 RAAF service record provided all the basics I needed. Some post war letters included in the record help me to confirm he was still alive in 1985. However, multiple family trees on Ancestry indicated he died in 1977. This took me down a rabbit hole until I established that a person with exactly the same name died in Sydney in 1977 where as Eric lived in Melbourne.
Once that confusion was sorted out, I focused my search on Tasmania where Eric was born in 1911. To the best of my knowledge, Eric did not marry so I started looking at the families of his many siblings. Several other brothers service during WW2 including Alexander Mark McCormack and Phillip Sylvester McCormack.
I found a death notice for Phillip which helped me verify all the family connections and finally led me to the decedents of another brother, Hector.
