Otto III, the Holy Roman Emperor who had been coronated by the Pope, turns on the Holy See and invades Rome, capturing the palace of San'Angelo outside the gates of the Vatican. Otto had proclaimed the antipope John XVI as pope because Pope Gregory V would not adhere to Otto's demands.
Death of Saint Hugh from Cluny, an abbot and close friend of fellow monk Hildebrand who became the great Pope Saint Gregory VII. Along with the latter, Hugh was a great reformer of the Church and, during his life, served nine pontiffs faithfully before dying on this date in his beloved Cluny.
Death of Saint Robert of Molesmes, one of the founding fathers of the Cistercians along with Saint Alberic and Saint Stephen Harding.
Death of Saint Catherine of Siena, Virgin and Doctor of the Church. It was through the dauntless efforts of this staunch defender of the faith and traditions that the papacy was returned to Rome after seventy years of exile in Avignon, France.
The teen-aged Saint Joan of Arc enters the beseiged city of Orleans, France to lead her country in victory over the English in the 100 year war and preserve the faith of Holy Mother Church in France.
Like Saint Thomas More, the Prior Father John Houghton is executed by King Henry VIII for refusing to pledge loyalty to the king, remaining ever faithful to the Roman Catholic Church.
The controversial Cardinal Armand Jean du Plessis Richelieu is appointed chief minister of the Royal Council of France. He would alienate many Catholic countries with his liberalism toward Protestants, often being called the "Cardinal of the Hugenots."