Australian death notices in newspaper

Today I received an Email giving me details of the death of Alan William Greathead, Arthur Albert Greathead, Margaret Hill Greathead and Helen Greethead the second wife of Keith Charles Greethead. I always though Arthur had emigrated, now we know for sure. I am unsure where Alan fits but the information in the Sydney Morning Herald will help to identify him in the future. Do you know?

many thanks Marilyn