So you don't actually know if the wife you are naming in your opening post, or on the other thread is no longer living. You have posted that Peter was born 1919, so his wife may well have been born in the 1920s, and she may well be still living.
Ancestry has uploaded a number of electoral rolls. Currently these cover some of the jurisdictions in Australia, but at the moment, Ancestry's uploads do not include any years more recent than 1980.
There are restrictions on accessing information about living people, and we are not allowed to post names of people who may still be living.
JM