Matilda of England, Duchess of Saxony
…later as a guarantee of Henry the Lion's performance with the peace terms agreed at Fulda in July 1190. He died in adolescence while still a hostage. Otto (1175/1176 – 19 May 1218), Count of Poitiers and Earl of York, and later, as Otto IV, King of Germany and Holy Roman Emperor. Married firstly on 23…