Hi,
A few more bits for you.
Ronald joined the RAAF in WW2 and his NOK was Roma .
It will be worthwhile you reading this record. Use the method previously suggested.
In the record you will learn his children’s names and a good deal of other helpful information, including that he was schooled at the Subiaco State Sch. So probably so was sister Cecilia. And there are a couple of photos of him.
Marriage
Croninburg, Roma A (Ashielia)
Hanson, Ronald G V
Perth. 1936/ 38
In 1945 he divorced Roma. She later remarried.
https://trove.nla.gov.au/newspaper/article/95615096 And he remarried in 1946.
Menghini Irene C (Catherine/Catherina)
Hanson, Ronald G V
Perth 1946/1194
She died in 1972 and is interred at Karrakatta.
In the RAAF file there are letters about his medals written in 1995 from another woman who is his widow.
He died in 1985 and is interred at Karrakatta
As David and Cecilia Hamilton were in Melbourne and if no parental information was known about Cecilia’s parents at the time of the death registration and the coroners inquiry, one assumes that someone finally found their marriage certificate or some such so that her WA family could be informed of her death. I would have thought David Gordon's parents would know her background.
Florence the mother died. and was interred Karrakatta.
GOVER
Florence Eleanor
84 Years 1971 MOUNT HENRY
At the time of the car accident, Cecilia's parents were in their 70's and therefore not really able to take in young children.
As you will know the names of your grandmother's siblings, have you tried to trace them?
Sue