First Barons' War - Louis A King of England?

Louis A King of England?

Since other English Kings such as Edward V and Edward VIII were not crowned but only proclaimed, and – more to the point – Louis occupied so much of England and was recognised as king by the barons as well as by the king of Scotland, there is a good case for including Louis VIII in the list of Kings of England. However, a clause of the Treaty of Lambeth required Prince Louis to declare retroactively that he had never been the rightful king.