Hi Kevin and welcome.
If the Defence & War Medal are struck in silver, then I would say the recipient is Canadian. If, however, the (named? &) numbered 1939-45 Medal is made of cupro-nickel, the recipient could be an Australian, South African (or even Indian).
See here:
https://en.m.wikipedia.org/wiki/War_Medal_1939–1945
Hope this helps narrow your search.