The most significant event in the history of the abbey came in April 1222 when a provincial council met there, charged with applying the Lateran decrees in England. When in July 1237, the papal legate Otto Cardinal Candidus came to Osney, a brawl broke out between a group of scholars from the university and the cardinal's men in which the legate's cook was killed. Otto himself was locked for safety in the abbey tower, emerging unscathed to lay the city under interdict in reprisal.