Approximate date of the death of Saint Anne, mother of the Blessed Virgin Mary. There is no known date for Anne's husband and Mary's father Saint Joachim. For more, see DAILY LITURGY.
Pope Gregory X establishes the Institution of the Inquisition, under the auspices of the Dominicans and Franciscans in order to safeguard the truths of Holy Mother Church.
Pedro de Luna, cardinal deacon is deposed as the antipope Benedict XIII on this day by the 37th session of the Council, having taken refuge in an impregnable castle in Valencia, Spain.
Death of Pope Paul II, 211th successor of Peter. This Venetian-born pontiff is the one who decided cardinals should wear the red berrettta - thus the term "red hat."