April 15– A fire breaks out in the Song Chinese capital city of Hangzhou, raging for four days and nights, destroying 58,097 houses over an area of more than 3 miles (4.8km), killing 59 people, and an unrecorded number of other people, who are trampled while attempting to flee. The government provides temporary lodging for 5,345 people, in nearby Buddhist and Taoist monasteries. The collective victims of the disaster are given 160,000 strings of cash, along with 400 tons of rice. Some of the government officials who lose their homes take up residence in rented boathouses on the nearby West Lake.
March 24– Innocent III places England under a Papal Interdict, as punishment for John, King of England ("Lackland")'s refusal to accept Stephen Langton as archbishop of Canterbury. During the interdict, religious services as marriages, burials, or baptisms cannot be performed. John confiscates church property of clergy who are unwilling to conduct services. Many bishops in the country flee abroad to the Continent.
Autumn –William Marshal is recalled and humiliated by King John at court in London, while John gives his justiciar in Ireland, Meiler Fitzhenry the order to invade Marshal's lands there, burning the town of New Ross.
Robert of Courçon, an English cardinal, writes his Summa – devoted to questions of canon law and ethics – dealing at length with the question of usury.