| Date | Age | Event | Bishop | Title | Current Title |
| 3 Sep | 39.6 | Ordained Bishop | José Alcaraz y Belluga † | Bishop of Tarazona, Spain | Bishop Emeritus |
| 59.1 | Ordained Deacon | Francesco Landi Pietra † | Deacon | Cardinal, Archbishop Emeritus of Benevento, Italy |
| 40.8 | Ordained Bishop | Gaspar de Molina y Rocha, O.S.A. † | Bishop of Almería, Spain |
| 5 Sep | | Born | Sébastien-Michel Amelot † | | Bishop Emeritus of Vannes, France |
| 8 Sep | 59.1 | Ordained Priest | Francesco Landi Pietra † | Priest | Cardinal, Archbishop Emeritus of Benevento, Italy |
| 10 Sep | 46.6 | Died | Claude de Cabannes (Chabannes) † | Bishop of Gap, France |
| 44.5 | Ordained Bishop | Bonifatius (Giovanni Giuseppe) Cecchotti, O.F.M. Ref. † | Bishop of Pedena, Austria |
| 61.9 | Ordained Bishop | Aloysius Foscari † | Patriarch of Venezia {Venice}, Italy |
| 13 Sep | 47.7 | Selected | Mikołaj Dembowski † | Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 16 Sep | 61.2 | Resigned | Nicolò Antonio Carafa, O.S.B. † | Bishop of Tricarico, Italy | Bishop Emeritus |
| Born | [François Nicolas] † | | Bishop Emeritus of [Meurthe (Constitutional), France] |
| 17 Sep | | Born | [Jean Julien Avoine] † | | Bishop of [Seine-et-Oise (Constitutional), France] |
| 18 Sep | 38.0 | Confirmed | Bertrand-Jean-Baptiste-René du Guesclin † | Bishop of Cahors, France |
| 43.1 | Confirmed | Adam Stanisław Grabowski † | Bishop of Warmia (Ermland), Poland |
| 62.1 | Appointed | Giovanni Francisco Ingenuo † | Titular Bishop of Dibon (Dibona) |
| 59.1 | Appointed | Francesco Landi Pietra † | Archbishop of Benevento, Italy | Cardinal, Archbishop Emeritus |
| 33.6 | Confirmed | Jean-François-Joseph de Rochechouard de Faudoas † | Cardinal, Bishop of Laon, France |
| 56.4 | Appointed | Pietro Alessandro Francesco Rovèro di Cortanze, O.F.M. Cap. † | Archbishop (Personal Title) of Novara, Italy | Bishop |
| 60.7 | Appointed | Gabriel de Torres y Navarra † | Titular Archbishop of Melitene | Titular Archbishop-Elect |
| 54.6 | Appointed | Antonio Zavarroni † | Bishop of Tricarico, Italy |
| 19 Sep | 14.1 | Appointed | Luis Antonio Jaime de Borbón y Farnesio † | Administrator of Sevilla {Seville}, Spain | |
| 23.3 | Ordained Priest | Francesco Mercati † | Priest | Bishop of Cefalonia e Zante, Greece |
| 20 Sep | 64.1 | Selected | Matteo Bertolini † | Archbishop of Sassari, Italy |
| 46.5 | Selected | Carlo Francesco Casanova † | Bishop of Alghero, Italy | Archbishop of Sassari, Italy |
| 23 Sep | 24.0 | Ordained Priest | Francesco Agostino della Chiesa † | Priest | Bishop of Vigevano, Italy |
| 24.0 | Ordained Priest | Gennaro Giordano † | Priest of Napoli {Naples}, Italy | Bishop of Acerra, Italy |
| 32.2 | Selected | Georges-Gaspard-Alexis de Plan des Augiers † | Bishop of Die, France |
| 24.2 | Ordained Priest | Domenico Russo † | Priest | Bishop of Monopoli, Italy |
| 24 Sep | 24.1 | Ordained Priest | Giovanni Pietro Riboli † | Priest | Bishop of Hvar (Lesina), Croatia |
| 54.6 | Ordained Bishop | Antonio Zavarroni † | Bishop of Tricarico, Italy |
| 25 Sep | 63.2 | Died | Marcello Passari † | Cardinal, Cardinal-Priest of Santa Maria in Ara Coeli |
| 27 Sep | 67.7 | Died | Jan-Baptist de Smet † | Bishop of Gent {Ghent, Gand}, Belgium |
| 63.6 | Died | Martin von Neuzelle (Graf), O. Cist. † | Titular Bishop-Elect of Zama Major |
| 29 Sep | 70.9 | Died | Nicola Maria Tedeschi, O.S.B. † | Bishop Emeritus of Lipari, Italy |
| Oct | 61.3 | Died | Giovanni Leonardo Sanna † | Bishop of Bosa, Italy |
| 1 Oct | 37.8 | Selected | Jacques-Marie de Caritat de Condorcet † | Bishop of Gap, France | Bishop of Lisieux, France |
| 2 Oct | | Born | Franz Karl Maria Cajetan von Firmian † | | Auxiliary Bishop of Passau, Germany |
| 6 Oct | 56.6 | Died | Francesco Maria Alberici † | Bishop of Foligno, Italy |
| 31.7 | Appointed | Arnaud-François Lefèbvre, M.E.P. † | Vicar Apostolic of Cochin {Cocincina}, Viet Nam |
| 31.7 | Appointed | Arnaud-François Lefèbvre, M.E.P. † | Titular Bishop of Nea Aule | Vicar Apostolic of Cochin {Cocincina}, Viet Nam |
| 45.9 | Died | Pierre de la Raffinie, S.J. † | Prefect of French Guiana-Cayenne, Antilles |
| 7 Oct | | Born | Innocenzo Maria Lirutti, O.S.B. † | | Bishop of Verona, Italy |
| 8 Oct | 37.7 | Ordained Bishop | Louis-Jacques-François de Vocance † | Bishop of Senez, France |
| 14 Oct | | Born | [Yves-Marie Audrein] † | | Bishop of [Finistère (Constitutional), France] |
| 28.3 | Appointed | Josef Maria von Thun und Hohenstein † | Bishop of Gurk, Austria | Bishop of Passau, Germany |
| 15 Oct | 38.1 | Ordained Bishop | Bertrand-Jean-Baptiste-René du Guesclin † | Bishop of Cahors, France |
| 33.7 | Ordained Bishop | Jean-François-Joseph de Rochechouard de Faudoas † | Cardinal, Bishop of Laon, France |
| 16 Oct | | Born | Jan Kanty Podhorodeński † | | Auxiliary Bishop of Lutsk and Zhytomyr (Łuck and Zytomierz), Ukraine |
| 24 Oct | | Born | Joaquín González de Terán, O.P. † | | Bishop Emeritus of Albarracin, Spain |
| 1 Nov | 77.8 | Died | Giovanni de Lerma † | Archbishop Emeritus of Manfredonia, Italy |
| 2 Nov | | Born | Pierre-Joseph-Georges Pigneau de Béhaine, M.E.P. † | | Vicar Apostolic of Cochin {Cocincina}, Viet Nam |
| 5 Nov | 46.8 | Ordained Bishop | Mateo de Zamora y Penagos, O.F.M. † | Bishop of Yucatán (Mérida), México |
| 22.2 | Ordained Priest | Gian Leonardo Maria Di Fusco, O.P. † | Priest of Order of Friars Preachers | Bishop of Acerra, Italy |
| 51.5 | Ordained Bishop | Diego Martínez y Garrido, O.S. † | Bishop of Cartagena, Colombia | Bishop Emeritus |
| 43.8 | Ordained Bishop | José Morales Blanco † | Bishop of Palencia, Spain |
| 10 Nov | | Born | Niccolò Laparelli † | | Bishop of Cortona, Italy |
| 12 Nov | 59.3 | Ordained Bishop | Francesco Landi Pietra † | Archbishop of Benevento, Italy | Cardinal, Archbishop Emeritus |
| 26.5 | Ordained Priest | Gabriel Palković, O.S.B.M. † | Priest of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Vicar Apostolic of Valachia (Križevci), Croatia |
| 17 Nov | 62.3 | Ordained Bishop | Giovanni Francisco Ingenuo † | Titular Bishop of Dibon (Dibona) |
| 19 Nov | 23.0 | Ordained Priest | Giovanni Carsana † | Priest | Archbishop of Zadar (Zara), Croatia |
| 58.9 | Installed | Inácio (de Santa Teresa) Torres de Souza, O.E.S.A. † | Bishop of Faro {Algarve}, Portugal |
| 20 Nov | 80.1 | Died | Melchior de Polignac † | Cardinal, Archbishop of Auch, France |
| 21 Nov | 48.2 | Selected | Francesco Bernardo de Cespedes † | Bishop of Bosa, Italy |
| 23 Nov | | Born | [Joseph Monin], O. Praem. † | | Bishop Emeritus of [Ardennes (Constitutional), France] |
| 25 Nov | 43.5 | Resigned | Jacques-Bonne Gigault de Bellefonds † | Bishop of Bayonne, France | Archbishop of Paris, France |
| 26 Nov | 52.0 | Resigned | Carlo Maria Lomellino † | Bishop of Ajaccio, France | Bishop Emeritus |
| 52.9 | Ordained Bishop | Andrea de Rossi, C.R. † | Titular Bishop of Patara |
| 27 Nov | 38.3 | Confirmed | Christophe de Beaumont du Repaire † | Bishop of Bayonne, France | Archbishop of Paris, France |
| 64.3 | Confirmed | Matteo Bertolini † | Archbishop of Sassari, Italy |
| 46.7 | Confirmed | Carlo Francesco Casanova † | Bishop of Alghero, Italy | Archbishop of Sassari, Italy |
| 55.2 | Appointed | Bernardino Centurione † | Bishop of Ajaccio, France |
| 41.6 | Appointed | Giacomo Filippo Consoli † | Titular Bishop of Germanicopolis | Bishop of Amelia, Italy |
| 50.8 | Appointed | Mario Antonio Maffei † | Bishop of Foligno, Italy |
| 28 Nov | 78.2 | Died | Louis-François Du Plessis de Mornay, O.F.M. Cap. † | Bishop Emeritus of Québec, Canada |
| 30 Nov | 55.2 | Ordained Bishop | Bernardino Centurione † | Bishop of Ajaccio, France |
| 41.6 | Ordained Bishop | Giacomo Filippo Consoli † | Titular Bishop of Germanicopolis | Bishop of Amelia, Italy |
| 3 Dec | | Born | Francisco Javier Aldazábal y Lodeña † | | Bishop of Santa Cruz de la Sierra, Bolivia |
| 82.1 | Died | Antoine-Joseph-Amable Feydeau, O. Carm. † | Bishop of Digne, France |
| 30.3 | Ordained Priest | Filippo Paini † | Priest | Bishop of Valva e Sulmona, Italy |
| Born | Francisco Javier Utrera † | | Bishop of Cádiz, Spain |
| 5 Dec | 67.1 | Selected | Agustín Rodríguez Delgado † | Archbishop of La Plata o Charcas, Bolivia | Archbishop of Lima, Peru |
| 6 Dec | | Born | Nicolás Videla del Pino † | | Bishop of Salta, Argentina |
| 7 Dec | 56.6 | Died | Carlo Ambrogio Mezzabarba † | Bishop of Lodi, Italy |
| 8 Dec | 43.4 | Installed | Adam Stanisław Grabowski † | Bishop of Warmia (Ermland), Poland |
| 9 Dec | 41.6 | Appointed | Giacomo Filippo Consoli † | Apostolic Administrator of Acquapendente, Italy | Bishop of Amelia, Italy |
| 11 Dec | 75.9 | Died | Tomás José Ruiz Montes † | Bishop of Cartagena (en España) |
| 13 Dec | 65.3 | Resigned | Giovanni Andrea Tria † | Bishop of Larino, Italy | Bishop Emeritus |
| 16 Dec | 74.3 | Died | VIncenzo Maria Mazzoleni, O.P. † | Bishop of Poreč (Parenzo), Croatia |
| 17 Dec | 50.9 | Ordained Bishop | Mario Antonio Maffei † | Bishop of Foligno, Italy |
| 20 Dec | 38.1 | Confirmed | Jacques-Marie de Caritat de Condorcet † | Bishop of Gap, France | Bishop of Lisieux, France |
| 60.6 | Appointed | Camillo Cibo (Cybo) † | Cardinal, Cardinal-Priest of Santa Maria degli Angeli |
| 59.8 | Confirmed | Walenty Alexander Czapski, O. Cist. † | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 43.6 | Confirmed | Jacques-Bonne Gigault de Bellefonds † | Archbishop of Arles, France | Archbishop of Paris, France |
| 39.3 | Confirmed | Henri-Gaston de Lévis-Léran † | Bishop of Pamiers, France |
| 32.4 | Confirmed | Georges-Gaspard-Alexis de Plan des Augiers † | Bishop of Die, France |
| 47.8 | Appointed | Franz Joseph Anton Joachim Schmid von Altenstadt † | Auxiliary Bishop of Regensburg, Germany |
| 47.8 | Appointed | Franz Joseph Anton Joachim Schmid von Altenstadt † | Titular Bishop of Lagania | Auxiliary Bishop of Regensburg, Germany |
| 65.4 | Appointed | Giovanni Andrea Tria † | Titular Archbishop of Tyrus | Bishop Emeritus of Larino, Italy |
| 23 Dec | 22.9 | Ordained Priest | Gregorio Francisco de Campos † | Priest of Sevilla {Seville}, Spain | Bishop of La Paz, Bolivia |
| 23.2 | Ordained Deacon | Daniel Johann Anton von Gebsattel † | Deacon of Würzburg, Germany | Auxiliary Bishop |
| 24.0 | Ordained Priest | François-Armand-Auguste de Rohan-Soubise-Ventadour † | Priest of Strasbourg, France | Cardinal, Bishop |
| 26.0 | Ordained Deacon | Franz Xaver Twrdy † | Deacon of Praha {Prague}, Czechia | Auxiliary Bishop |
| 24 Dec | 38.4 | Ordained Bishop | Christophe de Beaumont du Repaire † | Bishop of Bayonne, France | Archbishop of Paris, France |
| 27 Dec | 48.5 | Selected | Pedro Felipe de Azúa e Iturgoyen † | Bishop of Concepción, Chile | Archbishop Emeritus of Santafé en Nueva Granada, Colombia |
| 61.9 | Selected | Salvador Bermúdez y Becerra † | Bishop of La Paz, Bolivia | Archbishop of La Plata o Charcas, Bolivia |