355 Roman Emperor Constantius II promoted his cousin Julian to the rank of
Caesar, entrusting him with the government of the Prefecture of the Gauls.
Treaty of Wallingford was signed. This agreement effectively ended the civil
war known as the Anarchy, caused by a dispute between Empress Matilda and her
cousin King Stephen of England over the English crown. The Treaty of
Wallingford forced Stephen to recognize Matilda's son Henry of Anjou, who
became Henry II, as his heir, while Stephen kept the throne until he died.
Henry VI was crowned King of England.