As the title says, I finished Fable 2 yesterday. I have a lot of thoughts to write up about the story in this game, which I hope to post in the next day or two; specifically in relation to some excellent stuff posted over at the blog Twenty Sided (beware: spoilers abound at that link).
In the meantime, I can only recommend to you this: Don't name your Fable 2 kids after your real life kids... unless you hate your real life kids. In which case, by all means, go ahead.