| Date | Age | Event | Bishop | Title | Current Title |
| Sep | 62.4 | Died | Antonio Maria Gardini, O.S.B. † | Bishop of Crema, Italy |
| 61.5 | Ordained Bishop | Gavino Murro † | Bishop of Bosa, Italy | Archbishop of Sassari, Italy |
| 3 Sep | 66.3 | Died | François de Bonal (d’Aujac) † | Bishop of Clermont, France |
| 4 Sep | 69.6 | Died | Ignace Michel III Djarwé (Jarweh) † | Patriarch of Antiochia {Antioch} (Syrian), Lebanon |
| 7 Sep | 38.7 | Ordained Priest | Prosper de Tournefort † | Priest | Bishop of Limoges, France |
| 9 Sep | | Born | François-Augustin Delamare † | | Archbishop of Auch, France |
| 34.7 | Appointed | St. Domingo Henares, O.P. † | Coadjutor Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 34.7 | Appointed | St. Domingo Henares, O.P. † | Titular Bishop of Fesseë | Coadjutor Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 10 Sep | 74.2 | Died | Giovanni Lotrecchi † | Bishop of Todi, Italy |
| 12 Sep | 59.7 | Confirmed | Jan Jakub Szymonowicz † | Archbishop of Lviv (Armenian), Ukraine |
| 14 Sep | 69.5 | Ordained Deacon | Silvestro Scarani † | Deacon | Auxiliary Bishop of Ostia (-Velletri), Italy |
| 17 Sep | | Born | Mihály Fogarasy † | | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| 18 Sep | | Born | Ferenc Szenczy † | | Bishop of Szombathely, Hungary |
| 20 Sep | 23.5 | Ordained Priest | Mariano Brasca Bartocci † | Priest | Bishop Emeritus of Amelia, Italy |
| 26.6 | Ordained Priest | Nicola Caputo de’ Marchesi di Cerreto † | Priest | Bishop of Lecce, Italy |
| Born | Jean-Pierre Mabile † | | Bishop of Versailles, France |
| 69.6 | Ordained Priest | Silvestro Scarani † | Priest | Auxiliary Bishop of Ostia (-Velletri), Italy |
| 21 Sep | 23.2 | Ordained Priest | Jean-Jacques Lartigue, P.S.S. † | Priest of Society of Priests of Saint Sulpice | Bishop of Montréal, Québec, Canada |
| 23 Sep | 65.0 | Died | Antonio Ramón de Espinosa y Lorenzo, O.P. † | Bishop of Mérida, Venezuela |
| 87.9 | Died | Dominique de La Rochefoucauld † | Cardinal, Archbishop of Rouen, France |
| 24 Sep | 26.1 | Ordained Deacon | Francesco Leonini † | Deacon | Bishop of Urbania e Sant’Angelo in Vado, Italy |
| 25 Sep | | Born | Pietro Bottazzi † | | Bishop of Larino, Italy |
| 27 Sep | 68.8 | Resigned | Stefano Borgia † | Pro-Prefect of the Congregation for Propagation of the Faith | Cardinal, Prefect |
| 29 Sep | 74.2 | Died | Juan Díaz de La Guerra † | Bishop of Sigüenza, Spain |
| 30 Sep | | Born | St. Jerónimo Hermosilla, O.P. † | | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| Oct | 86.4 | Died | Adam Stanisław Krasiński † | Bishop Emeritus of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 64.5 | Died | Antonio Martínez de la Plaza † | Bishop of Cádiz, Spain |
| 60.1 | Resigned | Charles-Eugčne de Valperga de Maglione † | Bishop of Nice, France | Bishop Emeritus |
| 1 Oct | 45.5 | Appointed | Binkentios Coressi † | Archbishop of Naxos, Greece | Vicar Apostolic of Constantinople, Turkey |
| 76.9 | Died | [Bernard Font] † | Bishop of [Aričge (Constitutional), France] |
| 5 Oct | 43.1 | Selected | Louis Belmas † | Coadjutor Bishop of [Aude (Constitutional), France] | Bishop of Cambrai, France |
| 31.7 | Appointed | Ioannes Baptistus Russin † | Bishop of Syros (e Milos), Greece | Bishop Emeritus |
| 6 Oct | 68.1 | Died | Francesco Lorenzo Massajoli † | Bishop of Nocera Umbra, Italy |
| 8 Oct | | Born | Louis-Auguste Delalle † | | Bishop of Rodez, France |
| 9 Oct | 65.4 | Died | Vincenzo Maria Castro † | Bishop of Castellaneta, Italy |
| Born | St. Giustino Sebastiano Pasquale de Jacobis, C.M. † | | Vicar Apostolic of Abyssinia, Ethiopia |
| 11 Oct | 56.3 | Installed | Vincenz Joseph Franz Sales von Schrattenbach † | Bishop of Brno, Czechia |
| 13 Oct | | Born | Vincenzo d’Alfonso † | | Bishop of Penne e Atri, Italy |
| 14 Oct | | Born | José Maria da Silva Torres, O.S.B. † | | Coadjutor Bishop Emeritus of Braga, Portugal |
| 19 Oct | 54.9 | Died | Giuseppe Francesco Maria Ferraris da Genola † | Bishop of Saluzzo, Italy |
| 20 Oct | 23.4 | Appointed | Luis María Borbón y Vallábriga † | Cardinal-Priest of Santa Maria della Scala | Cardinal, Archbishop of Toledo, Spain |
| 23.4 | Elevated to Cardinal | Luis María Borbón y Vallábriga † | Cardinal, Archbishop of Toledo, Spain |
| 41.2 | Appointed | Diego Innico Caracciolo di Martina † | Cardinal-Priest of Sant’Agostino | Cardinal, Cardinal-Bishop of Palestrina |
| 43.3 | Appointed | Ercole Consalvi † | Cardinal-Deacon of Sant’Agata de’ Goti | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 48.2 | Appointed | Giovanni Coppola † | Titular Archbishop of Myra |
| 62.6 | Confirmed | Antonio Raffaele Dolci, O.P. † | Bishop of Stagno (Ston), Croatia |
| Born | Giovanni Tommaso Ghilardi, O.P. † | | Bishop of Mondovi, Italy |
| 60.3 | Appointed | Antonio Palafox y Croy de Abre † | Bishop of Cuenca, Spain |
| 23 Oct | | Born | Enrico Orfei † | | Cardinal, Archbishop of Ravenna, Italy |
| 24 Oct | 44.9 | Appointed | Giovanni Battista Lambruschini † | Coadjutor Bishop of Genova, Italy | Bishop of Orvieto, Italy |
| 26 Oct | 43.2 | Ordained Bishop | Louis Belmas † | Coadjutor Bishop of [Aude (Constitutional), France] | Bishop of Cambrai, France |
| Born | Michael von Deinlein † | | Archbishop of Bamberg, Germany |
| 27 Oct | 74.0 | Died | Vincenzo Ranuzzi † | Cardinal, Bishop of Ancona e Numana, Italy |
| 28 Oct | 48.3 | Ordained Bishop | Giovanni Coppola † | Titular Archbishop of Myra |
| Born | Dominique Galvano † | | Bishop of Nice, France |
| 30 Oct | 47.2 | Appointed | Romoaldo Braschi-Onesti † | Chamberlain (Camerlengo) of the Apostolic Chamber | Cardinal, Archpriest of the Basilica di San Pietro in Vaticano {Saint Peter Basilica} |
| 56.2 | Appointed | Giulio Maria della Somaglia † | Prefect of the Congregation of (Sacred) Rites | Cardinal, Librarian of the Vatican Library |
| 2 Nov | 72.8 | Died | Arnaldo Speroni, O.S.B. † | Bishop of Adria, Italy |
| 5 Nov | 56.9 | Appointed | Giovanni Battista Zauli † | Secretary of the Congregation of Ecclesiastical Immunity | Cardinal, Cardinal-Priest of Sant’Onofrio |
| 6 Nov | 84.1 | Died | José Luis Mollinedo † | Bishop of Palencia, Spain |
| 7 Nov | 51.9 | Appointed | Gregory Stapleton † | Vicar Apostolic of Midland District, England, Great Britain |
| 51.9 | Appointed | Gregory Stapleton † | Titular Bishop of Hierocaesarea | Vicar Apostolic of Midland District, England, Great Britain |
| 8 Nov | 70.0 | Appointed | Leonardo Antonelli † | Secretary of the Congregation for Universal Inquisition | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 68.8 | Installed | Joaquín Company Soler, O.F.M. Obs. † | Archbishop of Valencia, Spain |
| 9 Nov | 64.5 | Ordained Bishop | Nikola Bani (Ban) † | Archbishop of Dubrovnik (Ragusa), Croatia |
| 54.8 | Ordained Bishop | József Mártonfi † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| 53.4 | Ordained Bishop | [Jacques-Joseph Schelle] † | Bishop of [Nord (Constitutional), France] | Bishop Emeritus |
| 16 Nov | 51.2 | Ordained Bishop | Pedro Luis Blanco † | Bishop of León, Spain |
| 64.7 | Appointed | Benedetto Fenaja, C.M. † | Vicegerent of Roma {Rome}, Italy |
| 63.9 | Ordained Bishop | José Vicente Lamadrid † | Bishop of Málaga, Spain |
| 45.7 | Ordained Bishop | Nicolo Navoni † | Bishop of Iglesias, Italy | Archbishop of Cagliari, Italy |
| 56.8 | Resigned | Francesco Saverio Passari † | Vicegerent of Roma {Rome}, Italy | Titular Archbishop of Larissa in Thessalia |
| 19 Nov | 59.0 | Died | [Yves-Marie Audrein] † | Bishop of [Finistčre (Constitutional), France] |
| 21 Nov | 16.9 | Professed | Celestino Maria Cocle, C.Ss.R. † | Member of Congregation of the Most Holy Redeemer | Rector Major Emeritus of Patrae (Veters) |
| 56.8 | Appointed | Francesco Saverio Passari † | Apostolic Administrator of Ancona e Numana, Italy | Titular Archbishop of Larissa in Thessalia |
| 22 Nov | | Born | Gerardus Petrus Wilmer † | | Bishop of Haarlem, Netherlands |
| 23 Nov | 34.1 | Appointed | Leopold Maximilian von Firmian (Frimian) † | Bishop of Lavant, Slovenia | Archbishop of Wien {Vienna}, Austria |
| Born | Marie-Julien Meirieu † | | Bishop Emeritus of Digne, France |
| 26 Nov | | Born | Bl. Anton Martin Slomšek † | | Bishop of Lavant, Slovenia |
| Dec | 75.1 | Resigned | Luigi Valenti Gonzaga † | Prefect of the Congregation of Ecclesiastical Immunity | Cardinal, Librarian of the Vatican Library |
| 3 Dec | | Born | Giuseppe Pappalardo † | | Archbishop Emeritus of Conza e Campagna, Italy |
| 6 Dec | 62.9 | Resigned | Alessandro Alessandretti † | Bishop of Macerata e Tolentino, Italy | Bishop Emeritus |
| 72.9 | Resigned | Manel María Trujillo Jurado, O.F.M. Obs. † | Bishop of Albarracin, Spain | Bishop Emeritus |
| 7 Dec | 54.1 | Ordained Bishop | Leonard Neale † | Titular Bishop of Gortyna | Archbishop of Baltimore, Maryland, USA |
| 8 Dec | 71.9 | Died | Louis-Emmanuel de Cugnac † | Bishop of Lectoure, France |
| 61.6 | Died | Felipe Antonio Fernández Vallejo † | Archbishop of Santiago de Compostela, Spain |
| 15 Dec | 78.2 | Retired | Francisco Antonio de Lorenzana y Butrón † | Archbishop of Toledo, Spain | Cardinal, Archbishop Emeritus |
| 20 Dec | 50.5 | Selected | António José Cordeiro † | Bishop of Aveiro, Portugal |
| 22.7 | Ordained Priest | Francesco Saverio Gargiulo † | Priest | Titular Bishop of Thyatira |
| 26.4 | Ordained Priest | Francesco Leonini † | Priest | Bishop of Urbania e Sant’Angelo in Vado, Italy |
| 22.9 | Ordained Priest | Gennaro Pasca † | Priest | Bishop Emeritus of Nola, Italy |
| 50.7 | Selected | José Pegado de Azevedo, C.O. † | Bishop of Angra, Portugal |
| 22 Dec | 23.5 | Appointed | Luis María Borbón y Vallábriga † | Administrator of Sevilla {Seville}, Spain | Cardinal, Archbishop of Toledo, Spain |
| 23.5 | Appointed | Luis María Borbón y Vallábriga † | Cardinal, Archbishop of Toledo, Spain |
| 60.9 | Appointed | Francesco Maria Cioja † | Bishop of Todi, Italy |
| 46.8 | Appointed | Mateo Delgado y Moreno † | Titular Archbishop of Sebastea | Bishop of Badajoz, Spain |
| 53.9 | Appointed | Michele Di Pietro † | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine | Cardinal, Major Penitentiary of the Apostolic Penitentiary |
| 64.8 | Appointed | Benedetto Fenaja, C.M. † | Titular Archbishop of Philippi | Vicegerent of Roma {Rome}, Italy |
| 68.4 | Confirmed | Nikolaus Kondé de Póka-Telek † | Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 52.4 | Confirmed | László Köszeghy von Romete † | Bishop of Csanád, Hungary |
| 41.9 | Appointed | Alois Jozef Krakowski von Kolowrat † | Auxiliary Bishop of Olomouc, Czechia | Archbishop of Praha {Prague}, Czechia |
| 41.9 | Appointed | Alois Jozef Krakowski von Kolowrat † | Titular Bishop of Sarepta | Archbishop of Praha {Prague}, Czechia |
| 45.4 | Appointed | Buenaventura Moyano Rodríguez † | Auxiliary Bishop of Toledo, Spain | Bishop of Palencia, Spain |
| 45.4 | Appointed | Buenaventura Moyano Rodríguez † | Titular Bishop of Sebastopolis in Thracia | Bishop of Palencia, Spain |
| 34.5 | Appointed | Francesco Luigi Piervisani † | Bishop of Nocera Umbra, Italy |
| 69.8 | Appointed | Silvestro Scarani † | Auxiliary Bishop of Ostia (-Velletri), Italy |
| 69.8 | Appointed | Silvestro Scarani † | Titular Bishop of Dulma | Auxiliary Bishop of Ostia (-Velletri), Italy |
| 62.4 | Confirmed | Józef Ignác de Vilt (Wilt) † | Bishop of Beograd (-Smederevo), Serbia | Bishop of Győr (Raab), Hungary |
| 58.1 | Confirmed | Gabriel Zerdahely † | Bishop of Banská Bystrica, Slovakia |
| 25 Dec | 73.0 | Died | Giuseppe Maria Corte † | Bishop of Mondovi, Italy |
| Born | Manuel Bento Rodrigues da Silva † | | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 26 Dec | 45.4 | Selected | Buenaventura Moyano Rodríguez † | Bishop of Palencia, Spain |
| 27 Dec | 60.9 | Ordained Bishop | Francesco Maria Cioja † | Bishop of Todi, Italy |
| 64.8 | Ordained Bishop | Benedetto Fenaja, C.M. † | Titular Archbishop of Philippi | Vicegerent of Roma {Rome}, Italy |
| 23.9 | Ordained Deacon | Benito Lascano y Castillo † | Deacon of Córdoba (Tucumán), Argentina | Bishop |
| 34.5 | Ordained Bishop | Francesco Luigi Piervisani † | Bishop of Nocera Umbra, Italy |
| 31 Dec | 62.6 | Died | Melchor Serrano Lázaro, Sch. P. † | Auxiliary Bishop of Valencia, Spain |