Oh, thanks for finding this! I had known it was there but it must be in my other notebook as I couldn't find it last night. That puts him ~4 years younger than his wife, but that's certainly not implausible. I can't remember now if I had some reason to doubt that one, though, so will check further.

I really appreciate the help with this. I'd hit a bit of a wall and then finding the deed opened things up a little.