Latest version of this I've learned from a museum we've just been around, "Charles VIII of France died at the age of 27 after bashing his head on a lintel of a door on the way to watch a game of real tennis".
Jack Tindale
that's what makes medieval history so wild that so many stories of powerful rulers end with "and then on campaign he got the chills and died"
or in the case of vlad vi of wallachia "after a couple of large ones got on his horse and rode into the dâmbovița river"
