| Date | Age | Event | Bishop | Title | Current Title |
| Sep | 65.2 | Died | Gabriel Maria Gravina, O.S.B. † | Prelate of Santa Lucia del Mela, Italy |
| 2 Sep | 89.7 | Died | Josephus Green de Saint-Marsault † | Titular Bishop of Pergamum |
| 4 Sep | | Born | Louis-François Richer dit Laflèche † | Ste-Anne-de-la-Pérade | Bishop of Trois Rivières, Québec, Canada |
| 6 Sep | 74.0 | Died | Angelo Vincenzo Andrea Maria Dania, O.P. † | Bishop of Albenga, Italy |
| 60.5 | Selected | Adam Friedrich von Groß zu Trockau † | Bishop of Würzburg, Germany |
| Born | Carlo Francesco Prucha † | Gratzen | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 7 Sep | 63.6 | Selected | Raffaele Longobardi † | Bishop of Telese o Cerreto Sannita, Italy |
| 9 Sep | 16.1 | Professed | John Pius Leahy, O.P. † | Member of Order of Friars Preachers | Bishop of Dromore, Ireland |
| 72.8 | Died | Gualphardus Ridolfi † | Bishop of Rimini, Italy |
| 11 Sep | | Born | Gustavo de Belrupt-Tyssac † | Oppan | Auxiliary Bishop of Olomouc, Czech Republic |
| Born | Ignace George Chelhot (Scelhot) † | Aleppo | Patriarch of Antiochia {Antioch} (Syrian), Lebanon |
| 15 Sep | | Appointed | Giacomo Coccia † | Prelate of Santa Lucia del Mela, Italy |
| 60.5 | Confirmed | Adam Friedrich von Groß zu Trockau † | Bishop of Würzburg, Germany |
| 17 Sep | | Appointed | Pietro Carlo Ciani † | Bishop of Concordia (Sagittaria), Italy |
| Born | Nicola de Martino † | Buonabitacolo | Bishop Emeritus of Venosa, Italy |
| 18 Sep | 26.7 | Ordained Deacon | Tomás Miguel Pineda y Saldaña † | Deacon | Bishop of San Salvador, El Salvador |
| 19 Sep | 24.0 | Ordained Priest | Chiarissimo Falconieri Mellini † | Priest | Cardinal, Archbishop of Ravenna, Italy |
| 20 Sep | 96.4 | Died | Francesco Carafa della Spina di Traetto † | Cardinal, Prefect of the Congregation of Bishops and Regulars |
| 22 Sep | 60.5 | Appointed | Josaphat Bulhak, O.S.B.M. † | Bishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| Born | Joseph-Hyacinthe Sohier, M.E.P. † | Désertines, France | Vicar Apostolic of Northern Cochin {Cocincina Settentrionale}, Viêt Nam |
| 24 Sep | 68.1 | Appointed | Francesco Fontana, B. † | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 26 Sep | 63.9 | Appointed | Gregor Tarkovic (Tarkovits) † | Bishop of Prešov (Prjašev) (Slovakian), Slovakia | Bishop of Prešov (Prjašev) (Slovakian), Slovakia |
| 28 Sep | 62.6 | Appointed | Lorenzo Litta † | Cardinal, Official of the Roman Curia - Other |
| 29 Sep | 53.7 | Appointed | Francisco Ferreira de Azevedo † | Titular Bishop of Castoria | Bishop of Goiás, Brazil |
| Oct | | Appointed | Antonio Maria Borghi † | Bishop of Narni, Italy |
| Appointed | Stanislao Lucchesi † | Bishop of Foligno, Italy |
| 1 Oct | | Born | Domenico Maria Villa † | Bassano | Bishop of Parma, Italy |
| 2 Oct | 68.1 | Appointed | Giuseppe Andrea Albani † | Cardinal-Deacon of S. Eustachio | Cardinal, Librarian of the Vatican Library |
| 58.8 | Appointed | Girolamo Aprile Benso † | Bishop of Piazza Armerina, Italy |
| 65.5 | Appointed | Domenico Antonio Cimaglia † | Bishop of Molfetta, Italy |
| 50.1 | Appointed | Carlo Filesio Cittadini † | Bishop of Perugia, Italy |
| 74.2 | Appointed | Giulio Maria della Somaglia † | Cardinal-Priest of S. Lorenzo in Damaso | Cardinal, Archivist of the Vatican Secret Archives |
| 53.3 | Appointed | Antonio Fernando Echanove Zaldívar † | Titular Archbishop of Nicosia | Archbishop of Tarragona, Spain |
| 61.9 | Appointed | Paolo Garzilli † | Bishop of Bovino, Italy | Bishop of Sessa Aurunca, Italy |
| 48.1 | Appointed | Vincenzo Macchi † | Titular Archbishop of Nisibis | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 64.0 | Appointed | Franciszek Skarbek von Malczewski † | Archbishop of Warszawa {Warsaw}, Poland |
| 59.7 | Appointed | Giulio Mami † | Bishop of Città della Pieve, Italy |
| 41.0 | Appointed | Giuseppe Mancini † | Bishop of Massa Marittima, Italy | Archbishop of Siena, Italy |
| 61.8 | Appointed | Bartolomeo Pacca † | Cardinal-Priest of S. Lorenzo in Lucina | Cardinal, Secretary of the Roman Curia - Other |
| 59.8 | Appointed | Francesco Saverio (François-Xavier) Pereira † | Bishop of Rieti, Italy |
| 50.3 | Appointed | Leonardo Santander Villavicencio † | Bishop of Quito, Ecuador | Bishop of Astorga, Spain |
| 55.7 | Appointed | Joseph Walland † | Archbishop of Gorizia e Gradisca, Italy |
| 3 Oct | 50.5 | Died | Antônio Rodrigues de Aguiar † | Prelate of Goiás, Brazil |
| Born | Leopoldo Angelo Santanchè, O.F.M. † | Acquasanta, Italy | Bishop of Fabriano e Matelica, Italy |
| 69.9 | Died | Juan Raimundo Santos Larumbe y Larrayoz † | Bishop of Tudela, Spain |
| 4 Oct | 48.1 | Ordained Bishop | Vincenzo Macchi † | Titular Archbishop of Nisibis | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 55.1 | Ordained Bishop | Jan Jerzy Wilkxycki † | Titular Bishop of Flavias | Auxiliary Bishop of Chelmno (Culma, Kulm), Poland |
| 6 Oct | 48.1 | Appointed | Vincenzo Macchi † | Apostolic Nuncio to Switzerland | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 35.6 | Appointed | Francesco Serra Casano † | Apostolic Nuncio to Germany | Cardinal, Archbishop of Capua, Italy |
| 8 Oct | 23.9 | Ordained Priest | Jean-Marie Doney † | Priest of Besançon, France | Bishop of Montauban, France |
| 9 Oct | 55.5 | Died | Emanuel Maria Thun † | Bishop of Trento, Italy |
| 11 Oct | 60.1 | Ordained Bishop | Cristóbal Bencomo Rodríguez † | Titular Archbishop of Heraclea in Europa |
| Born | Martin Crane, O.S.A. † | Barrystown, Ireland | Bishop of Sandhurst, Australia |
| 12 Oct | | Born | Mariano Ortiz Urruela † | Guatemala | Titular Bishop of Teja |
| 17 Oct | 70.3 | Died | Antonio Dugnani † | Cardinal, Prefect of the Apostolic Signatura |
| 22 Oct | | Born | Victor José Díez Navarrete † | Coro | Bishop of Barquisimeto, Venezuela |
| 23 Oct | | Born | Gaetano Alimonda † | Genoa | Cardinal, Archbishop of Torino {Turin}, Italy |
| 24 Oct | 62.1 | Died | Etienne-Hubert de Cambacérès † | Cardinal, Archbishop of Rouen, France |
| 26 Oct | | Born | St. José María Díaz Sanjurjo, O.P. † | Santa Eulalia, Spain | Vicar Apostolic of Central Tonking {Tonkino Centrale}, Viêt Nam |
| 28 Oct | 78.8 | Died | Salvatore Vecchioni, C.O. † | Bishop of Anglona-Tursi, Italy |
| 6 Nov | 24.3 | Ordained Priest | Louis Delcusy † | Priest | Bishop of Viviers, France |
| 8 Nov | 78.2 | Died | Joaquín Encabo de la Virgen de Sopetrán, O.A.R. † | Bishop of Cebu, Philippines |
| 12 Nov | | Born | João Antônio dos Santos † | São Gonçalo do Rio Preto | Bishop of Diamantina, Brazil |
| 13 Nov | 78.0 | Appointed | Joseph von Stubenberg † | Apostolic Administrator of Eichstätt, Germany | Archbishop of Bamberg, Germany |
| 14 Nov | 73.1 | Died | Remigio de La Santa y Ortega † | Bishop of Lérida, Spain |
| 16 Nov | 86.4 | Died | Roberto Costaguti † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 22 Nov | 54.9 | Ordained Bishop | Francisco Albán Barreiro, O.P. † | Bishop of Nueva Segovia, Philippines |
| Born | Giuseppe Marzorati † | Milano | Bishop of Como, Italy |
| 29 Nov | 59.9 | Appointed | Emmanuele de Gregorio † | Prefect of the Roman Curia - Other | Cardinal, Secretary |
| 74.3 | Appointed | Benedetto Naro † | Prefect of the Congregation of the Index | Cardinal, Prefect of the Roman Curia - Other |
| 61.9 | Appointed | Bartolomeo Pacca † | Prefect of the Congregation of Bishops and Regulars | Cardinal, Secretary of the Roman Curia - Other |
| 6 Dec | | Born | François-Antoine-Marie-Ambroise-Benjamin Baduel † | Laguiole | Bishop of Saint-Flour, France |
| 35.9 | Appointed | James Keatinge † | Coadjutor Bishop of Ferns, Ireland | Bishop |
| 8 Dec | | Born | Luigi Ciurcia, O.F.M. † | Ragusa, Italy | Vicar Apostolic Emeritus of Egitto, Egypt |
| 12 Dec | 72.7 | Died | Bernardo Nadal Crespí † | Bishop of Mallorca, Spain |
| 13 Dec | 68.4 | Died | Pedro Inocencio Bejarano † | Bishop of Sigüenza, Spain |
| 15 Dec | 58.5 | Died | Joseph Ludwig Colmar † | Bishop of Mainz, Germany |
| 16 Dec | | Born | Christophore Cosandey † | Giffers | Bishop of Lausanne et Genève, Switzerland |
| 19 Dec | 24.8 | Ordained Priest | Raffaele Ferrigno † | Priest | Archbishop of Brindisi, Italy |
| 26.1 | Ordained Priest | Charles-Hubert Jeantet, M.E.P. † | Priest of La Société des Missions Etrangères | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 24.4 | Ordained Priest | René-François Régnier † | Priest of Angers, France | Cardinal, Archbishop of Cambrai, France |
| 20 Dec | | Born | Tommaso Mesmer † | Anagni | Bishop of Terracina, Priverno e Sezze, Italy |
| 21 Dec | 56.7 | Ordained Bishop | Bernardino Bollati † | Bishop of Biella, Italy |
| 57.0 | Appointed | Fernando Cano Almirante, O.F.M. † | Bishop of Antioquía, Colombia | Bishop of Islas Canarias {Canary Islands}, Spain |
| 65.0 | Appointed | Columbano Giovanni Battista Carlo Gaspare Chiaverotti, O.S.B. † | Archbishop of Torino {Turin}, Italy |
| 44.9 | Appointed | Niccola Caputo de’ Marchesi di Cerreto † | Bishop of Lecce, Italy |
| 74.4 | Appointed | Giulio Maria della Somaglia † | Cardinal-Bishop of Porto e Santa Rufina | Cardinal, Archivist of the Vatican Secret Archives |
| 72.1 | Appointed | Bernardo Maria della Torre † | Bishop of Castellammare di Stabia, Italy |
| 59.0 | Appointed | Francesco Saverio Durini † | Bishop of Marsi, Italy | Bishop of Aversa, Italy |
| 71.8 | Appointed | Giovanni Filippo Gallarati Scotti † | Cardinal-Priest of S. Lorenzo in Lucina | Cardinal, Prefect Emeritus of the Prefecture of the Papal Household |
| 60.3 | Appointed | Bartolomeo Goglia † | Bishop of Sant’Angelo dei Lombardi-Bisaccia, Italy |
| 50.3 | Appointed | Dámaso Egidio Iglesias Lago † | Bishop of Orense, Spain |
| 63.9 | Confirmed | Raffaele Longobardi † | Bishop of Telese o Cerreto Sannita, Italy |
| 44.5 | Appointed | Cassiodoro Margarita † | Bishop of Gravina-Irsina, Italy |
| 63.1 | Appointed | Rodrigo Antonio de Orellana, O. Praem. † | Bishop of Avila, Spain |
| 62.0 | Appointed | Bartolomeo Pacca † | Cardinal-Bishop of Frascati | Cardinal, Secretary of the Roman Curia - Other |
| 46.1 | Appointed | Ján Krstitel Ladislav Pyrker (Pryker), O. Cist. † | Bishop of Spiš, Slovakia | Archbishop of Eger, Hungary |
| 56.2 | Appointed | Antonio Sánchez Matas, O.F.M. † | Bishop of La Paz, Bolivia | Bishop Emeritus |
| Appointed | Giovanni Tomasuolo † | Bishop of Nicotera-Tropea, Italy | Bishop Emeritus |
| 51.6 | Appointed | Gaetano Maria Giuseppe Benedetto Placido Vincenzo Trigona e Parisi † | Bishop of Caltagirone, Italy | Cardinal, Archbishop of Palermo, Italy |
| 51.1 | Appointed | Francesco Saverio Triggiani, O.F.M. Conv. † | Bishop of Oria, Italy | Bishop Emeritus |
| 22 Dec | 66.7 | Died | Johann Aloys (Algis) Schneider † | Vicar Apostolic of Foreign Vicariate |
| 26 Dec | | Born | Tobia Patroni † | Bagnoli Irpino | Bishop of Valva e Sulmona, Italy |
| 27 Dec | | Born | Francesco di Nicola † | Aversa | Bishop of Ischia, Italy |
| 59.1 | Ordained Bishop | Francesco Saverio Durini † | Bishop of Marsi, Italy | Bishop of Aversa, Italy |