Hi- I looked in a book I have, titled "The Timetables of History" The New Third Revised Edition by Bernard Grun, based upon Werner Stein's "Kulturfahrplan. Under History/Politics section for year 1154, it says "Stephen died, Henry II King of England ; from now till 1485 the House of Plantagnet rules England". I'm thinking this should be pretty accurate as the history on William The Conquerer is accurate, as well as other things I've checked....Teri