A little bit late perhaps, but I only stumbled upon this thread a couple of days ago.
I'm Bert's nephew, and just wanted to let you know that we are really moved by all the sweet memories and lovely stories about our uncle, brother and brother in law. It's really amazing to read that he was loved by so many people from all over the world. So big thanks from all of us, to all of you!
All the best and greetings from The Netherlands,
Ps: Bill, the dog's name was indeed Bear (or Beer in Dutch). We also assume that they're back together now!