I haven't any update on family members but I'm quite sure I see William's Marriage
record to Helen Jean Cook in 1937 in the NS Vital Stats website.
You can download this site at
https://www.novascotiagenealogy.com/and there is a small program that comes with the site to download to let you move
the record page around to enable you to see the complete record page. Maybe you
will confirm later if you get to see his record.