 Rocca, "Chronhistoria de Apostolico Sacrario", Rome, 1605).Augustinian friars, as of 2009, still perform the duties of papal sacristans, but the appointment of an Augustinian bishop-sacristan lapsed under Pope John Paul II with the retirement of Petrus Canisius Van Lierde in 1991.In papal Rome the Augustinian friars always filled one of the Chairs of the Sapienza University, and one of the consultorships in the Congregation of Rites.