User blog comment:Muppetfan/QUESTION: Bubbie's Husband/@comment-4509439-20120331191205

Sorry, this might be too late.

You could rename the other grandfather so you have the Francine's Grandfather (Paternal) and Francine's Grandfather (Maternal). I think that'd work better, since Francine is a more major character, therefore using her name to reference relatives in the titles would make it more understandable.

I don't know if Bubbie's husband is dead or not, maybe just watch The Great MacGrady? Sorry, I don't have time right now. If it's not mentioned or if it's just the uncle one, like you said, then you're probably right.

If Bubbie's husband DID die, then I'm guessing he was alive earlier in the series (Arthur's Perfect Christmas), like you said below.

Hope this helped :)