I was wondering if any historians knew of an easily-accessible family tree of Charlemagne, showing his descendants into the current era. I know that there's a 'fact' floating around that a certain percentage of Europe is related to him at this point, but I'm more interested in legitimate, documented descendants than, "and this guy probably had a few kids with some village whores, too" kind of descendants.

If this isn't the appropriate place to ask, I'm sorry.