Bréauté, English high sheriff and a rival of Henry III, refuses to relinquish his castles and starts a rebellion. Cardinal Stephen Langton and forces under Hubert de Burgh deal with Falkes and the castles are handed over. Falkes is found guilty of 16 counts of Wrongful Disseisin, he and his brother William are excommunicated by Langton. June–August –The garrison at Bedford Castle, belonging to Falkes de Bréauté, refuses to surrender to Henry III. The castle falls when the keep is undermined, the garrison, who has surrendered the castle, are all hanged by order of the king. Falkes is allowed to leave the country but loses all his possessions. Bedford Castle is badly damaged as a result. Asia Spring – The Mongol army led by Subutai and Jochi cross the steppes of modern Kazakhstan, and returns to the horde of Genghis Khan on the Irtysh River. At a great kurultai or gathering of chiefs, Subutai reports on the Western campaign. Jochi submits to Genghis and his supposed 'insubordination' (see 1220) is forgiven. As a result of the Mongol invasion in 1219–1223, Kazakhstan and Central Asia become part of the Mongol Empire. January 14 – Emperor Xuan Zong of the Chinese Jurchen-led Jin Dynasty dies after a 10-year reign. He is succeeded by his 25-year-old son, Ai Zong, who conquers more Song territory during the Jin–Song Wars. September 17 – Emperor Ning Zong of the Chinese Song Dynasty dies (possibly poisoned) after a 30-year reign, at Hangzhou. He is succeeded by his relative, Li Zong, as all of Ning Zong's children have died. By topic Education June 5 – The University of Naples is founded by Emperor Frederick II. Frederick's main purpose is to create an institution of higher learning that will put an end to the predominance of the universities of northern Italy, most notably these of Bologna and Padua, which are considered either too independent or under the strong influence of Pope Honorius III. Religion September 14 – Francis of Assisi, while praying on the mountain of La Verna during a 40-day fast, has a vision, as a result of which he receives the stigmata. Brother Leo, who is with Francis at the time, leaves a clear and simple account of this event, the first definite account of the phenomenon of stigmata. Births March 5 – Kinga of Poland, high duchess of Poland (d. 1292) March 20 – Sophie of