June 15 in royal history:
June 15, 923 Death of Robert I of France
June 15, 1215 - Signing of the Magna Carta by King John
June 15, 1330 - Birth of Edward, the Black Prince, son of Edward III, father of Richard II, at Woodstock Palace, Oxfordshire
June 15, 1519 - Birth of Henry Fitzroy, Henry VIII's illegitimate son
June 15, 1777 Wedding of Prince Honoré IV of Monaco and Louise d'Aumont Mazarin
June 15, 1888 - Death of Frederick III, German Emperor and King of Prussia, husband of Victoria, Princess Royal, at the Neues Palais in Potsdam; buried at Friedenskirche, Potsdam
Ill with throat cancer when he succeeded his father, Frederick reigned for only 99 days before he died and was succeeded by his son Wilhelm II.
June 15, 1905 Wedding of Gustav VI Adolf of Sweden (1st marriage) and Margaret of Connaught at St. Georges Chapel, Windsor
June 15, 1978 - Wedding of King Hussein I of Jordan and Lisa Halaby
