| Date | Age | Event | Bishop | Title | Current Title |
| 1 Sep | | Born | Ramón Fernández Piérola y Lopez de Luzuriaca † | Otiñano, Spain | Bishop of Vitoria, Spain |
| 5 Sep | | Born | Placido Maria Schiaffino, O.S.B. † | Genoa, Italy | Cardinal, Prefect of the Congregation of the Index |
| 6 Sep | 58.3 | Ordained Bishop | Charles de Douhet d’Auzers † | Bishop of Nevers, France |
| 32.1 | Ordained Bishop | Bénigne-Urbain-Jean-Marie du Trousset d’Héricourt † | Bishop of Autun, France |
| 22.5 | Ordained Deacon | Mattia Hirschler † | Deacon | Bishop of Przemyśl, Poland |
| 8 Sep | 35.7 | Ordained Bishop | Ignazio Giustiniani † | Titular Bishop of Aenus | Bishop of Chios (Scio), Greece |
| 74.1 | Died | Claude-Madeleine de La Myre-Mory † | Bishop Emeritus of Le Mans, France |
| 12 Sep | 70.1 | Installed | Charles-Alexandre de Richery † | Archbishop of Aix (-Arles-Embrun), France |
| 13 Sep | | Born | Aloysius Nicora † | Milano | Bishop of Como, Italy |
| 14 Sep | | Born | Evangelista Boni, O.F.M. Cap. † | Pistoia | Archbishop of Corfù, Greece |
| 19 Sep | 23.0 | Ordained Deacon | Giulio Arrigoni, O.F.M. † | Deacon of Order of Friars Minor | Archbishop of Lucca, Italy |
| 24.2 | Ordained Priest | Pietro Colli † | Priest | Bishop of Adria, Italy |
| 24.2 | Ordained Priest | Louis-Marie-Olivier Epivent † | Priest | Bishop of Aire et Dax, France |
| 23.5 | Ordained Priest | Filippo Gallo, C.M. † | Priest of Congregation of the Mission | Bishop Emeritus of Bovino, Italy |
| 22.5 | Ordained Priest | Rambaldo Magagnini † | Priest of Jesi, Italy | Bishop |
| 24.7 | Ordained Priest | Napoleon Joseph Perché † | Priest | Archbishop of New Orleans, Louisiana, USA |
| 26.4 | Ordained Priest | Joseph Ponsot, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Yünnan, China |
| 23.7 | Ordained Priest | William J. Quarter † | Priest of New York, New York, USA | Bishop of Chicago, Illinois, USA |
| 22.5 | Ordained Priest | Pietro Paolo Trucchi, C.M. † | Priest of Congregation of the Mission | Bishop of Forli, Italy |
| 21 Sep | 69.7 | Died | Ildefonso Cañedo y Vigil † | Archbishop of Burgos, Spain |
| 38.9 | Ordained Bishop | Joseph-Marie-Pélagie Havard, M.E.P. † | Titular Bishop of Castoria | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 68.2 | Ordained Bishop | Louis-Charles-Jean-Baptiste Michel † | Bishop of Fréjus, France |
| Born | Manoel do Rego Medeiros † | Aracati | Bishop of Olinda, Brazil |
| 79.6 | Died | Jozef Schedy † | Bishop of the Titular See |
| 26 Sep | | Born | Annibale Barabesi † | Tatti | Bishop of San Miniato, Italy |
| 27 Sep | 49.2 | Ordained Bishop | Sebastiano Soldati † | Bishop of Treviso, Italy |
| 28 Sep | 59.0 | Appointed | Giovanni Augustoni, O.S.A. † | Titular Bishop of Porphyreon |
| 40.8 | Confirmed | Philippe-Marie-Thérèse-Guy Carron † | Bishop of Le Mans, France |
| 65.1 | Confirmed | Bernhard Galura † | Bishop of Brixen {Bressanone}, Italy |
| 63.9 | Confirmed | Felipe González Abarca, O. de M. † | Bishop of Santander, Spain |
| 65.9 | Confirmed | Santos Gómez Marañón, O.S.A. † | Bishop of Cebu, Philippines |
| 42.9 | Confirmed | François-Marie-Edouard de Gualy † | Bishop of Saint-Flour, France | Archbishop of Albi, France |
| 67.2 | Confirmed | Jacques Raillon † | Bishop of Dijon, France | Archbishop of Aix (-Arles-Embrun), France |
| 65.4 | Confirmed | Pedro Rodriguez de Miranda, O. de M. † | Bishop of Jaca, Spain |
| 70.0 | Confirmed | Placido Maria Tadini, O.C.D. † | Bishop of Biella, Italy | Cardinal, Archbishop of Genova, Italy |
| 29 Sep | 61.1 | Appointed | Joseph Vitus Burg † | Bishop of Mainz, Germany |
| 30 Sep | 23.1 | Ordained Priest | Ivan Josip Vitezić † | Priest | Bishop of Krk (Veglia), Croatia |
| 1 Oct | 23.7 | Ordained Deacon | László Bíró de Kezdi-Polany † | Deacon | Bishop of Satu Mare {Szatmár}, Romania |
| 2 Oct | | Appointed | William O’Higgins † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 4 Oct | 59.1 | Ordained Bishop | Giovanni Augustoni, O.S.A. † | Titular Bishop of Porphyreon |
| Born | Michael O’Connor † | Dublin, Ireland | Bishop of Ballarat, Australia |
| 61.6 | Ordained Bishop | Godehard Joseph Osthaus † | Bishop of Hildesheim, Germany |
| 6 Oct | 69.9 | Appointed | Gaétan Giunta † | Titular Archbishop of Amida |
| 7 Oct | 62.8 | Appointed | Mariano Medrano y Cabrera † | Vicar Apostolic of Buenos Aires, Argentina | Bishop |
| 62.8 | Appointed | Mariano Medrano y Cabrera † | Titular Bishop of Aulon | Bishop of Buenos Aires, Argentina |
| 8 Oct | | Born | Giovanni Battista Antonio Bartolomeo Marcellino Berardi, O.C.D. † | Costa Rainero, Italy | Coadjutor Vicar Apostolic of Verapoly, India |
| 50.5 | Died | Patrick Kelly † | Bishop of Waterford and Lismore, Ireland |
| Born | Luigi Paggi (Poggi) † | Cesena | Bishop Emeritus of Rimini, Italy |
| 9 Oct | 77.6 | Died | Bernardo García y Hernández (Fernandez Perdigon), O.F.M. † | Bishop of Nueva Caceres, Philippines |
| 25.0 | Ordained Deacon | Francisco de Asis Orueta y Castrillón, C.O. † | Deacon of Confederation of Oratorians of St. Philip Neri | Archbishop of Lima, Peru |
| Born | Domenico Pio Rossi, O.P. † | Bologna | Bishop of Concordia (Sagittaria), Italy |
| 11 Oct | 32.2 | Installed | Bénigne-Urbain-Jean-Marie du Trousset d’Héricourt † | Bishop of Autun, France |
| 25.0 | Ordained Priest | Francisco de Asis Orueta y Castrillón, C.O. † | Priest of Confederation of Oratorians of St. Philip Neri | Archbishop of Lima, Peru |
| 15 Oct | | Born | Nándor Dulánszky † | Esztergom | Bishop of Pécs, Hungary |
| 16 Oct | 24.1 | Ordained Deacon | Vincenzo Cima † | Deacon | Auxiliary Bishop of Split-Makarska (Spalato-Macarska), Croatia |
| 18 Oct | 70.0 | Ordained Bishop | Placido Maria Tadini, O.C.D. † | Bishop of Biella, Italy | Cardinal, Archbishop of Genova, Italy |
| 19 Oct | 24.1 | Ordained Priest | Vincenzo Cima † | Priest | Auxiliary Bishop of Split-Makarska (Spalato-Macarska), Croatia |
| 23 Oct | 68.8 | Selected | Aleksandar Alagović † | Bishop of Zagreb (Agram), Croatia |
| Born | Paul-Félix-Arséne Billard † | Saint-Valèry-en-Caux | Bishop of Carcassonne, France |
| 77.9 | Succeeded | Johann Michael von Sailer † | Bishop of Regensburg, Germany |
| 25 Oct | 23.0 | Ordained Priest | Maximilian Joseph von Tarnóczy † | Priest of Salzburg, Austria | Cardinal, Archbishop |
| 27 Oct | | Born | Joseph-Simon Theurel, M.E.P. † | La Rochelle, France | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 28 Oct | 37.8 | Ordained Bishop | Michael Anthony Fleming, O.F.M. † | Titular Bishop of Carpasia | Bishop of Newfoundland, Canada |
| 29 Oct | 77.9 | Installed | Johann Michael von Sailer † | Bishop of Regensburg, Germany |
| 30 Oct | 59.6 | Died | Camillo Alleva † | Archbishop of Salerno (-Acerno), Italy |
| 1 Nov | 51.5 | Selected | Antonio Giurico † | Bishop of Dubrovnik (Ragusa), Croatia |
| 43.0 | Selected | Paolo Miossich † | Bishop of Split-Makarska (Spalato-Macarska), Croatia |
| 2 Nov | 87.8 | Died | Alexandre-François-Amédée-Adonis-Louis-Joseph de Lauzières de Thémines † | Bishop of Blois, France |
| 3 Nov | | Born | Antonio Saverio de Souza Monteiro † | Lisbon | Bishop of Beja, Portugal |
| 7 Nov | | Born | Melezio Fakkak † | Damasco | Archbishop of Beirut and Jbeil {Bairut e Gibail} (Melkite Greek), Lebanon |
| 8 Nov | 40.9 | Ordained Bishop | Philippe-Marie-Thérèse-Guy Carron † | Bishop of Le Mans, France |
| 50.2 | Ordained Bishop | Jan Frans (Jean-François) Van de Velde † | Bishop of Gent {Ghent, Gand}, Belgium |
| 10 Nov | 67.0 | Died | Antonio Faà di Bruno † | Bishop of Asti, Italy |
| 11 Nov | 67.3 | Ordained Bishop | Jacques Raillon † | Bishop of Dijon, France | Archbishop of Aix (-Arles-Embrun), France |
| 12 Nov | 87.4 | Died | René des Monstiers de Mérinville † | Bishop Emeritus of Chambéry, France |
| 15 Nov | 76.6 | Died | Giovanni Marchetti † | Titular Archbishop of Ancyra |
| 39.6 | Ordained Bishop | Cornelius Richard Antoon van Bommel † | Bishop of Liège, Belgium |
| 17 Nov | | Born | Francesco Paolo Cardona Albini † | Benevento, Italy | Titular Bishop of Nemesi |
| 19 Nov | 70.8 | Died | Federico Bencivenni, O.F.M. Cap. † | Bishop of Bertinoro, Italy |
| Born | Jean-Alphonse Blanchet † | Châteauroux | Bishop of Gap, France |
| 22 Nov | 60.4 | Selected | Antonio Savorin † | Bishop of Chioggia, Italy |
| 23 Nov | | Born | Giuseppe David † | Mossul | Archbishop of Damas (Syrian), Syria |
| 25 Nov | | Born | Paolo Gregori † | Piegaro | Bishop of Città della Pieve, Italy |
| 29 Nov | | Born | Aloys Elloy, S.M. † | Servigny-les-Raville, France | Vicar Apostolic of Central Oceania, Tonga |
| 30 Nov | 43.1 | Ordained Bishop | François-Marie-Edouard de Gualy † | Bishop of Saint-Flour, France | Archbishop of Albi, France |
| Ordained Bishop | William O’Higgins † | Bishop of Ardagh (and Clonmacnois), Ireland |
| Dec | 65.1 | Appointed | Szymon Michal Józef Arnold Giedroyć † | Coadjutor Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania | Bishop |
| 1 Dec | 23.9 | Ordained Priest | László Bíró de Kezdi-Polany † | Priest | Bishop of Satu Mare {Szatmár}, Romania |
| 4 Dec | | Born | Stanislao Maria de Luca † | Bari | Bishop of San Severo, Italy |
| 6 Dec | 65.3 | Installed | Bernhard Galura † | Bishop of Brixen {Bressanone}, Italy |
| 76.4 | Died | Jan Pavel Woronicz † | Archbishop of Warszawa {Warsaw}, Poland |
| 7 Dec | | Born | Joseph von Schork † | Kleinheubach | Archbishop of Bamberg, Germany |
| 9 Dec | 65.9 | Selected | Joaquín López y Sicilia † | Archbishop of Burgos, Spain | Archbishop of Valencia, Spain |
| 10 Dec | 77.3 | Died | Anne-Louis-Henri de La Fare † | Cardinal, Archbishop of Sens (-Auxerre), France |
| 13 Dec | 65.2 | Ordained Bishop | Juan Antonio Lillo, O.F.M. † | Titular Bishop of Amathus in Palaestina | Bishop of Nueva Caceres, Philippines |
| 16 Dec | | Born | Augusto Antonio Vicentini † | Aquila | Archbishop of L’Aquila, Italy |
| 17 Dec | 25.0 | Ordained Deacon | Jerónimo José de Mata, C.M. † | Deacon of Congregation of the Mission | Bishop Emeritus of Macau, China |
| 18 Dec | | Appointed | Pietro Borzi † | Bishop of Sapë, Albania |
| 19 Dec | 55.1 | Selected | Severo Leonardo Andriani Escofet † | Bishop of Pamplona, Spain | Bishop of Pamplona (-Tudela), Spain |
| 23.5 | Ordained Priest | Pietro Cilento † | Priest | Archbishop of Rossano, Italy |
| 25.0 | Ordained Priest | Jerónimo José de Mata, C.M. † | Priest of Congregation of the Mission | Bishop Emeritus of Macau, China |
| 22.7 | Ordained Priest | Florian-Jules-Félix Desprez † | Priest of Cambrai, France | Cardinal, Archbishop of Toulouse (-Narbonne), France |
| 25.8 | Ordained Priest | Jean-Sébastien-Adolphe Devoucoux † | Priest | Bishop of Evreux, France |
| 23.7 | Ordained Priest | Luigi Maria (Honuphrius Maria) Lembo, O.F.M. † | Priest of Order of Friars Minor | Bishop of Crotone (Cotrone), Italy |
| 22.7 | Ordained Priest | Clemente Pagliaro † | Priest | Bishop of Anagni, Italy |
| 24.1 | Ordained Priest | Enrico de Rossi † | Priest | Bishop Emeritus of Caserta, Italy |
| 20 Dec | | Born | Thomas McGivern † | Annachlone | Bishop of Dromore, Ireland |
| 21 Dec | 61.1 | Died | Teofil von Wolicki † | Archbishop of Gniezno e Poznań, Poland |
| 22 Dec | | Born | Eugenio Biffi, P.I.M.E. † | Milan, Italy | Bishop of Cartagena, Colombia |
| 21.2 | Ordained Priest | Jakub (Iacobus) Bosagi, C.A.M. † | Priest of Congregazione Mechitarista | Abbot Primate |
| 24 Dec | 68.9 | Died | José Maria de Santana e Noronha, O.S.P.P.E. † | Bishop of Bragança e Miranda, Portugal |
| 27 Dec | | Born | Francesco Malczynski † | Holubia | Bishop of Lezhë {Lesh, Alessio}, Albania |
| 29 Dec | 87.9 | Died | Florido Pierleoni, C.O. † | Bishop of Acquapendente, Italy |
| 30 Dec | 44.2 | Resigned | Paulus Augustus Foscolo † | Archbishop of Corfù, Greece | Titular Patriarch of Alexandria {Alessandria} |