| Date | Age | Event | Bishop | Title | Current Title |
| 6 Oct | 74.6 | Died | Simone de Magistris, C.O. † | Titular Bishop of Cyrene |
| 7 Oct | | Born | René-Marie-Charles Poirier, C.I.M. † | Redon, France | Bishop of Roseau, Dominica, Antilles |
| 10 Oct | 51.7 | Ordained Bishop | Alfonso Aguado y Jaraba † | Titular Bishop of Augustopolis in Phrygia | Auxiliary Bishop of Toledo, Spain |
| Born | Antonio Izzo † | Petrulo | Bishop of Isernia e Venafro, Italy |
| 12 Oct | | Born | Zaccaria Bricito † | Bassano | Archbishop of Udine, Italy |
| 15 Oct | 73.7 | Died | Gregorio Alessandri † | Bishop of Cortona, Italy |
| 56.3 | Selected | Jean-Louis-Simon Rollet † | Bishop of Montpellier, France | Bishop Emeritus |
| 17 Oct | 58.6 | Selected | François de Fontanges † | Archbishop (Personal Title) of Autun, France | Bishop |
| 58.8 | Selected | Louis-Apolinaire de La Tour du Pin-Montauban † | Archbishop (Personal Title) of Troyes, France | Bishop |
| 58.0 | Selected | Jean-François de Mandolx † | Bishop of La Rochelle, France | Bishop of Amiens, France |
| 18 Oct | | Born | Giovanni Francesco Magnani † | Bologna | Bishop of Recanati e Loreto, Italy |
| 19 Oct | 39.6 | Confirmed | Luc-Jean-Baptiste Bailly † | Bishop of Poitiers, France |
| 24 Oct | 39.6 | Ordained Bishop | Luc-Jean-Baptiste Bailly † | Bishop of Poitiers, France |
| 28 Oct | 40.3 | Ordained Bishop | Gregor von Zirkel † | Titular Bishop of Hippos | Auxiliary Bishop of Würzburg, Germany |
| 30 Oct | 67.9 | Died | Valentin Anton von Schneid † | Auxiliary Bishop of Regensburg, Germany |
| 1 Nov | 66.1 | Died | Juan Bautista de Zengotita y Bengoa, O. de M. † | Bishop of Puerto Rico (Porto Rico) |
| 10 Nov | | Born | Pasquale de Lucia † | Catanzaro | Bishop of Gerace, Italy |
| 56.4 | Confirmed | Jean-Louis-Simon Rollet † | Bishop of Montpellier, France | Bishop Emeritus |
| Resigned | Friedrich von York und Albany † | Bishop of Osnabrück, Germany | Bishop Emeritus |
| 11 Nov | 58.7 | Confirmed | Joseph-Jacques Loison † | Bishop of Bayonne, France |
| 14 Nov | 59.9 | Ordained Bishop | Francisco Leitão de Carvalho, O. Cist. † | Bishop of Beja, Portugal |
| 58.7 | Ordained Bishop | Joseph-Jacques Loison † | Bishop of Bayonne, France |
| Born | Charles-Marie Magnin † | La Muraz | Bishop of Annecy, France |
| 56.4 | Ordained Bishop | Jean-Louis-Simon Rollet † | Bishop of Montpellier, France | Bishop Emeritus |
| 18 Nov | 46.4 | Incardinated | Joseph Chrysostomus Pauer † | Priest of Sankt Pölten, Austria | Bishop |
| 20 Nov | 75.9 | Retired | Michel-François de Couët du Vivier de Lorry † | Bishop of La Rochelle, France | Bishop Emeritus |
| 28 Nov | 25.7 | Ordained Priest | Manuel Pires de Azevedo Loureiro † | Priest | Bishop of Beja, Portugal |
| 1 Dec | | Born | Armand-Françios-Marie de Charbonnel, O.F.M. Cap. † | Monistrol-sur-Loire, France | Bishop Emeritus of Toronto, Ontario, Canada |
| 3 Dec | | Born | Andrew Byrne † | Navan, Ireland | Bishop of Little Rock, Arkansas, USA |
| 4 Dec | 25.9 | Ordained Priest | Robert Gradwell † | Priest | Coadjutor Vicar Apostolic of London District, England, Great Britain |
| 7 Dec | 78.5 | Died | Carlo Giuseppe Filippa della Martiniana † | Cardinal, Bishop of Vercelli, Italy |
| 8 Dec | | Born | Pierre-Marie-Joseph Darcimoles † | Rueyres | Archbishop of Aix (-Arles-Embrun), France |
| 9 Dec | 62.5 | Died | Antonio Palafox y Croy de Abre † | Bishop of Cuenca, Spain |
| 12 Dec | 82.0 | Died | Henri-Joseph-Claude de Bourdeilles † | Bishop Emeritus of Soissons, France |
| 22.3 | Ordained Deacon | Ignác Szepesy de Négyes † | Deacon | Bishop of Pécs, Hungary |
| 13 Dec | | Born | Joseph Hippolyte Guibert, O.M.I. † | Aix-en-Provence | Cardinal, Archbishop of Paris, France |
| 15 Dec | | Appointed | Georgius Tuno † | Vicar Apostolic of Sofia e Plovdiv, Bulgaria |
| 16 Dec | | Born | Edward Maginn † | Fintona | Coadjutor Bishop of Derry, Ireland |
| 18 Dec | 70.4 | Died | Nikolaus Kondé de Póka-Telek † | Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 23.9 | Ordained Priest | Lorenzo Parigini † | Priest | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 23.1 | Ordained Priest | Gregorio Zelli, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Ascoli Piceno, Italy |
| 20 Dec | 65.4 | Confirmed | Jean Dominique Altei † | Bishop of Scardona (Skradin), Italy |
| 48.9 | Appointed | Blas Joaquín Álvarez de Palma † | Bishop of Teruel, Spain | Archbishop of Granada, Spain |
| 58.3 | Appointed | Angelo Vincenzo Andrea Maria Dania, O.P. † | Bishop of Albenga, Italy |
| 58.8 | Confirmed | François de Fontanges † | Archbishop (Personal Title) of Autun, France | Bishop |
| 58.9 | Appointed | Pedro Antonio Juano † | Bishop of Menorca, Spain |
| 58.9 | Confirmed | Louis-Apolinaire de La Tour du Pin-Montauban † | Bishop of Troyes, France |
| 58.2 | Confirmed | Jean-François de Mandolx † | Bishop of La Rochelle, France | Bishop of Amiens, France |
| 49.5 | Confirmed | Joaquim Maria Mascarenhas Castello Branco † | Bishop of Angola e Congo, Angola | Bishop Emeritus |
| 33.7 | Confirmed | Manuel Santo Galdino, O.F.M. † | Bishop of Macau, China | Archbishop of Goa, India |
| 58.8 | Appointed | Miguel Joaquín Matías Suárez, O.F.M. Cap. † | Auxiliary Bishop of Zaragoza, Spain |
| 58.8 | Appointed | Miguel Joaquín Matías Suárez, O.F.M. Cap. † | Titular Bishop of Amyzon | Auxiliary Bishop of Zaragoza, Spain |
| 55.2 | Appointed | Antonio Vila y Campos † | Bishop of Albarracin, Spain |
| 42.0 | Confirmed | Ignace Michel Zahir (Daher) † | Patriarch of Antiochia {Antioch} (Syrian), Lebanon | Patriarch Emeritus |
| 42.0 | Confirmed | Ignace Michel Zahir (Daher) † | Bishop of Beirut {Bairut} (Syrian), Lebanon | Patriarch Emeritus of Antiochia {Antioch} (Syrian), Lebanon |
| 21 Dec | 58.3 | Ordained Bishop | Angelo Vincenzo Andrea Maria Dania, O.P. † | Bishop of Albenga, Italy |
| 17.3 | Professed | Francisco José Vicente Garcia Diego y Moreno, O.F.M. † | Member of Order of Friars Minor | Bishop of California (Two Californias, Both Californias), México |
| 45.7 | Ordained Bishop | Fabrizio Sceberras Testaferrata † | Titular Archbishop of Berytus | Cardinal, Bishop of Senigallia, Italy |
| 22 Dec | 56.4 | Died | Joannes Bapt. Marchese † | Bishop of Catanzaro, Italy |
| 23 Dec | 54.0 | Installed | Andrés Ambrosio de Llanos y Valdés, O.F.M. † | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 24 Dec | 21.9 | Professed | Tomás Díez de Bedoya, O.F.M. Cap. † | Member of Order of Friars Minor Capuchin | Auxiliary Bishop of Santiago de Compostela, Spain |
| 27 Dec | 53.1 | Installed | Francisco Javier de Lizana y Beaumont † | Archbishop of México, Federal District |
| 30 Dec | 59.8 | Appointed | Johann Nepomuk von Wolf † | Auxiliary Bishop of Regensburg, Germany | Bishop |