Yes Roy was a really well-liked pilot with a fascinating history. I have seen his son Chris Goon online recently (Facebook?) so for sure there is info out there.
There is an email address for Chris in the last link with Roy in a CAC Boomerang, but it's a 20 year old post.
https://www.abc.net.au/news/2020-08-14/roy-goon-victory-in-the-pacific-day/12546132
https://www.ozatwar.com/cgoon.htm