Hi,
Andy :-)
I think "father of" usually refers to someone who was either the founder of something, or started an idea, invented something, etc.
At least we (and your right about me being Israeli) call Einstein "father of relativity", Herzl is "father of Zionism",
Jesus we call "father of Christianity", etc. (and I think we're not the only ones, but maybe I'm wrong.)
But I don't see how we can apply that to "father of joy".
On a differnt level, I suppose that if your child is "your joy", then it makes you "father of joy" :-) but of course such a name wouldn't describe the child himself (or herself in our case, which would make even less sense).
Finally, I guess if we want to we can call someone who is simply very joyful "father of joy". Implying he looks as if he himself has invented joy, or something...
Again, doesn't make much sense as a name go give to a baby girl, but not impossible to come up with reasons.
P.S.
Don't know any name books, sorry...
P.S. 2
Your knowledge of languages is very impressive!
May I ask how many languages you speak?