Events December 22 — Afraid that the Egyptian capital Fustat (in today's Old Cairo) will be captured by the Crusaders, its Fatimid vizier, Shawar, orders the city set afire. The city burns for 54 days. Prince Richard of England becomes duke of Aquitaine. He later becomes King Richard I of England. Emperor Takakura ascends to the throne of Japan. King Valdemar I of Denmark conquers Arkona on the Island of Rügen, the strongest pagan fortress and temple in Northern Europe. The Chin… (More on 1168)