Hi montywrites - I'm one of probably many who would be glad to help you with this search (out of the public eye, i.e. not on the boards), but unless you can be reached by private message, nothing further can happen.
I'm hoping that posting this message will get notice to you to come back to your thread so you'll see the moderator's edit comment, about posting two more messages (you need only say "hello" or "thanks") so you have access to private message sending and receiving.
Then you can feel free to click on my name and send a message, if you like. It seems that Edward and Hilda did have, probably, three children, so it may well be possible to trace family.
Meanwhile, it could be worthwhile to obtain the death certificates for Edward and Hilda (1983) to see whether a family member was the informant. If you need directions and the references for doing that, they can be provided easily.