The campaign to canonize Joan was launched by the then-Bishop of Orléans in 1869. After decades of delay (and an initial rejection by the papal consistory), it was Pope Pius X who pushed Joan's cause through (Leo XIII having signed the Commissio Introductionis Causæ Servæ Dei Joannæ d'Arc in 1894). Pope Benedict XV oversaw her canonization ceremony on May 16, 1920.