&gt; The chronicler Jean Froissart heard the story of a noble named Pierre de Béarn who had a traumatic experience when he killed an exceptionally large bear in hand-to-hand combat. Afterwards, during his sleep he would rise, grab a sword and swing it around at the air. If he could not find his weapon, Pierre “created such noise and clamor that it seemed like all the demons of hell were there with him.” Eventually, his wife and children would leave him over the problem.<p>Apparently people from the middle ages still suffered from night tremors. Now that these sorts of things are better understood, quotes like this sound rather comical.