Hi rebekahm28
The 1940 Census database has been released now which I eagerly started looking for Walter. I thought this would be a way to find him, but alas no.
I cannot find anything for a Walter, Valdis, Valdeman with all the possible surnames, not even for Annette.
Did Annette start a new family? Did she die in the 50s?
Is it possible that Annette remarried again and then having a different surname.
Have you found anymore new info yourself?
I wonder what occupation Walter had here in Sweden?
Ian