Duke University | Duke Ellington | Duke | William III of England | Duke of Wellington | George III of the United Kingdom | Henry III of England | George III | Edward III of England | Prince William, Duke of Cambridge | Henry III | Edward III | Duke of York | Charles III of Spain | William III | Loudon Wainwright III | WTA Tier III tournaments | Duke of Norfolk | Richard III of England | Benigno Aquino III | Duke of Edinburgh | Duke of Burgundy | Pope Alexander III | Star Wars Episode III: Revenge of the Sith | Prince Arthur, Duke of Connaught and Strathearn | Henry III of France | George Villiers, 1st Duke of Buckingham | Prince Andrew, Duke of York | Gustav III of Sweden | Duke of Northumberland |
William intervened in favor of Edward in the catastrophic war of succession between his brothers-in-law Reinald and Edward for control of the Duchy of Guelders.