| Date | Age | Event | Bishop | Title | Current Title |
| Sep | 22.6 | Ordained Deacon | Michael Anthony Fleming, O.F.M. Ref. † | Deacon of Order of Reformed Friars Minor | Bishop of Newfoundland, Canada |
| 1 Sep | 72.5 | Died | Charles de La Font de Savines † | Bishop Emeritus of Viviers (Aps), France |
| 51.3 | Selected | José Antonio Joaquín Pérez Martínez y Robles † | Bishop of Tlaxcala (Puebla de los Angeles), México |
| 5 Sep | 54.6 | Selected | Ildefonso Cañedo y Vigil † | Bishop of Málaga, Spain | Archbishop of Burgos, Spain |
| 61.8 | Selected | Ignacio Ramón Roda † | Bishop of León, Spain |
| 11 Sep | 22.5 | Ordained Priest | Thomas Cooke † | Priest of Québec, Canada | Bishop of Trois-Rivières, Québec, Canada |
| 33.6 | Ordained Priest | Francesco Faldi † | Priest | Bishop Emeritus of Fabriano e Matelica, Italy |
| 13 Sep | | Born | Giovanni Battista Guttadauro di Reburdone † | | Bishop of Caltanissetta, Italy |
| 14 Sep | | Born | Paolo Angelo Ballerini † | | Archbishop Emeritus of Milano {Milan}, Italy |
| 68.0 | Died | Lorenzo Igual de Soria † | Bishop of Plasencia, Spain |
| 15 Sep | 75.1 | Died | [Jean Danglars] † | Bishop Emeritus of [Lot (Constitutional), France] |
| Born | Pedro Payo y Piñeiro, O.P. † | | Archbishop of Manila, Philippines |
| 17 Sep | 65.9 | Died | Giuseppe Maria Cenicela, O.F.M. Disc. † | Archbishop of Reggio Calabria, Italy |
| 18 Sep | 60.5 | Selected | Juan Nepomuceno de Lera y Cano † | Bishop of Barbastro, Spain | Bishop of Segovia, Spain |
| 20 Sep | 64.1 | Selected | Lorenzo Algüero Ribera, O.S.M. † | Bishop of Segorbe, Spain |
| 21 Sep | | Born | Pierre-Alfred Grimardias † | | Bishop of Cahors, France |
| 23 Sep | | Born | Alfred Duquesnay † | | Archbishop of Cambrai, France |
| 78.3 | Resigned | Henri Henrard, O.F.M. Conv. † | Apostolic Administrator of Liège, Belgium | Apostolic Administrator Emeritus |
| 24 Sep | 22.9 | Ordained Priest | Giovanni Battista Bagnasco † | Priest | Auxiliary Bishop of Palermo, Italy |
| 24.0 | Ordained Priest | Manfredo Giovanni Battista Bellati † | Priest | Bishop of Ceneda, Italy |
| 23.0 | Ordained Priest | Jan Kanty Dąbrowski † | Priest of Poznań, Poland | Auxiliary Bishop of Gniezno e Poznań, Poland |
| 24.3 | Ordained Priest | José Agustín Domínguez y Díaz † | Priest of Antequera, Oaxaca, México | Bishop |
| 22.0 | Ordained Deacon | Federico Manfredini † | Deacon | Bishop of Padova {Padua}, Italy |
| 24.0 | Ordained Priest | Claudio Samuelli † | Priest of Montepulciano, Italy | Bishop |
| 25 Sep | 53.3 | Selected | José Antonio Azpeitia y Sáenz de Santamaria † | Bishop of Lugo, Spain | Bishop of Cartagena (en España) |
| 58.0 | Selected | Manuel Ros de Medrano † | Bishop of Tortosa, Spain |
| 26 Sep | 41.1 | Appointed | Mario Ancaiani † | Bishop of Gubbio, Italy | Archbishop of Spoleto, Italy |
| 61.3 | Appointed | Michele Belli † | Titular Archbishop of Nazianzus |
| 49.9 | Appointed | Francesco Canali † | Bishop of Spoleto, Italy | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 55.1 | Appointed | Diego Innico Caracciolo di Martina † | Cardinal, Cardinal-Bishop of Palestrina |
| Appointed | Bonaventura Carenzi, O.F.M. Conv. † | Bishop of Città della Pieve, Italy |
| 52.9 | Confirmed | Juan de Cavia y González † | Bishop of Osma, Spain |
| 52.3 | Confirmed | Stefan (István) Csech (Cech) † | Bishop of Beograd (-Smederevo), Serbia | Bishop of Košice, Slovakia |
| 41.1 | Appointed | Francesco Maria Cipriani, O.S.B. † | Bishop of Veroli, Italy |
| 70.1 | Appointed | Giulio Maria della Somaglia † | Cardinal-Bishop of Frascati | Cardinal, Librarian of the Vatican Library |
| 62.8 | Appointed | Giuseppe Maria Doria Pamphilj † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 45.2 | Confirmed | László Esterházy † | Bishop of Rožňava, Slovakia |
| 58.9 | Appointed | Carlo Fioravanti † | Bishop of Rieti, Italy |
| 47.0 | Appointed | Candido Maria Frattini † | Titular Archbishop of Philippi | Vicegerent of Roma {Rome}, Italy |
| 67.5 | Appointed | Giovanni Filippo Gallarati Scotti † | Cardinal-Priest of Santa Prassede | Cardinal, Cardinal-Priest of San Lorenzo in Lucina |
| 71.5 | Appointed | Józef Gabriel Gembart † | Auxiliary Bishop of Gniezno, Poland | Auxiliary Bishop of Gniezno e Poznań, Poland |
| 71.5 | Appointed | Józef Gabriel Gembart † | Titular Bishop of Patara | Auxiliary Bishop of Gniezno e Poznań, Poland |
| 47.5 | Appointed | Giovanni Battista Iacobini † | Bishop of Bagnoregio (Bagnorea), Italy |
| 49.7 | Confirmed | Pedro Inguanzo Rivero † | Bishop of Zamora, Spain | Cardinal, Archbishop of Toledo, Spain |
| 59.1 | Confirmed | György Kurbély † | Bishop of Veszprém, Hungary |
| 58.5 | Appointed | Lorenzo Litta † | Cardinal-Bishop of Sabina | Cardinal, Prefect of the Congregation for Residence of Bishops |
| 61.4 | Appointed | Giovanni Marchetti † | Titular Archbishop of Ancyra |
| 52.0 | Appointed | Jan Chrzciciel Louis Masclet, O.M. † | Auxiliary Bishop of Minsk, Belarus |
| 52.0 | Appointed | Jan Chrzciciel Louis Masclet, O.M. † | Titular Bishop of Camachus | Auxiliary Bishop of Minsk, Belarus |
| 70.5 | Appointed | Alessandro Mattei † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 58.6 | Appointed | Francesco Antonio Mondelli † | Bishop of Città di Castello, Italy |
| 57.7 | Appointed | Bartolomeo Pacca † | Chamberlain (Camerlengo) of the Apostolic Chamber | Cardinal, Secretary of the Congregation for Universal Inquisition |
| 60.7 | Confirmed | Isidoro Pérez de Celis, M.I. † | Bishop of Segovia, Spain |
| 63.3 | Confirmed | Atanasio Puyal y Poveda † | Bishop of Calahorra y La Calzada, Spain |
| 61.0 | Appointed | Nikodem Puzyna † | Auxiliary Bishop of Vilnius, Lithuania |
| 61.0 | Appointed | Nikodem Puzyna † | Titular Bishop of Satala in Armenia | Auxiliary Bishop of Vilnius, Lithuania |
| 62.0 | Appointed | Hieronim Stojnowski (Stroynowski) † | Bishop of Vilnius, Lithuania |
| 27 Sep | | Born | Vjenceslav Šoić † | | Bishop Emeritus of Senj (-Modruš), Croatia |
| 29 Sep | 47.8 | Selected | Andrés Esteban y Gómez † | Bishop of Ceuta, Spain | Bishop of Jaén, Spain |
| 78.3 | Died | Henri Henrard, O.F.M. Conv. † | Apostolic Administrator Emeritus of Liège, Belgium |
| 2 Oct | 61.4 | Ordained Bishop | Michele Belli † | Titular Archbishop of Nazianzus |
| 41.1 | Ordained Bishop | Francesco Maria Cipriani, O.S.B. † | Bishop of Veroli, Italy |
| 47.0 | Ordained Bishop | Candido Maria Frattini † | Titular Archbishop of Philippi | Vicegerent of Roma {Rome}, Italy |
| 61.4 | Ordained Bishop | Giovanni Marchetti † | Titular Archbishop of Ancyra |
| 3 Oct | | Born | Francesco Sabbia † | | Bishop of Crema, Italy |
| 75.6 | Retired | Jean-Chrysostome André de Villaret † | Bishop of Casale Monferrato, Italy | Bishop Emeritus |
| 4 Oct | 63.7 | Appointed | John Connolly, O.P. † | Bishop of New York, New York, USA |
| 63.7 | Appointed | Patrick Everard † | Coadjutor Archbishop of Cashel (-Emly), Ireland | Archbishop |
| 63.7 | Appointed | Patrick Everard † | Titular Archbishop of Mitylene | Archbishop of Cashel (-Emly), Ireland |
| 41.5 | Appointed | Kyran Marum † | Bishop of Ossory, Ireland |
| 50.1 | Appointed | Arthur Murphy † | Bishop of Kildare and Leighlin, Ireland | Former Bishop-Elect |
| 37.7 | Appointed | Oliver O’Kelly † | Archbishop of Tuam, Ireland |
| 49.7 | Appointed | George Thomas Plunkett † | Bishop of Elphin, Ireland |
| 60.7 | Appointed | Charles Tuohy † | Bishop of Limerick, Ireland |
| 61.7 | Appointed | Peter Waldron † | Bishop of Killala, Ireland |
| 6 Oct | 69.1 | Appointed | Heinrich (Philipp Ernst) von Warnsdorf, O.S.B. † | Vicar Apostolic of Fulda, Germany |
| 7 Oct | 64.2 | Selected | Manuel Benito y Tabernero † | Bishop of Solsona, Spain |
| 8 Oct | 77.5 | Died | Adalbert (Wilhelm Adolph Heinrich) von Harstall, O.S.B. † | Bishop of Fulda, Germany |
| 9 Oct | 41.2 | Ordained Bishop | Mario Ancaiani † | Bishop of Gubbio, Italy | Archbishop of Spoleto, Italy |
| 58.9 | Ordained Bishop | Carlo Fioravanti † | Bishop of Rieti, Italy |
| 25.7 | Ordained Priest | Vincenzo Menchi † | Priest | Bishop of Fiesole, Italy |
| 10 Oct | | Born | Imre Szabó † | | Bishop of Szombathely, Hungary |
| 11 Oct | | Born | John Baptist Lamy † | | Archbishop Emeritus of Santa Fe, New Mexico, USA |
| 12 Oct | 57.2 | Died | Juan Alejo de Arizmendi de la Torre † | Bishop of Puerto Rico (Porto Rico) |
| Born | Calixto Maria Clavijo Salazar † | | Bishop Emeritus of La Paz, Bolivia |
| 59.6 | Appointed | Binkentios Coressi † | Coadjutor Vicar Apostolic of Constantinople, Turkey | Vicar Apostolic |
| 59.6 | Appointed | Binkentios Coressi † | Titular Archbishop of Sardes | Vicar Apostolic of Constantinople, Turkey |
| 17 Oct | 80.2 | Died | Franciszek Ksawery Rydzyński † | Bishop of Chelmno (Culma, Kulm), Poland |
| 23 Oct | 23.0 | Ordained Priest | Antônio Joaquim de Mello † | Priest of São Paulo, Brazil | Bishop |
| 26 Oct | 65.2 | Died | Antonio Luigi Landi, O.F.M. Obs. † | Vicar Apostolic of Hukwang, Shansi [Shanxi], and Shensi [Shaanxi], China |
| 28 Oct | 16.4 | Professed | Thomas Joseph Brown, O.S.B. † | Member of Order of Saint Benedict | Bishop of Newport and Menevia, Wales, Great Britain |
| 30 Oct | 47.6 | Ordained Bishop | Giovanni Battista Iacobini † | Bishop of Bagnoregio (Bagnorea), Italy |
| Nov | 76.3 | Died | Pietro de Felice † | Bishop of Sessa Aurunca, Italy |
| 4 Nov | 53.9 | Selected | László Csáky de Keresztszegh † | Bishop of Knin (Tinin), Croatia |
| 71.7 | Died | Dávid Zsolnay † | Bishop of Knin (Tinin), Croatia |
| 5 Nov | | Born | Manuel Bernardo da Souza Ennes † | | Bishop of Portalegre, Portugal |
| 6 Nov | 55.3 | Ordained Bishop | Diego Innico Caracciolo di Martina † | Cardinal, Cardinal-Bishop of Palestrina |
| 63.8 | Ordained Bishop | John Connolly, O.P. † | Bishop of New York, New York, USA |
| 7 Nov | 60.1 | Died | Sigmund Christoph von Waldburg-Zeil-Trauchburg † | Bishop Emeritus of Chiemsee, Germany |
| 10 Nov | 59.8 | Died | Gregorio Hermida y Gamba (Camba) † | Bishop of Oviedo, Spain |
| 11 Nov | | Born | Martín Griver y Cuní † | | Bishop of Perth, Australia |
| 12 Nov | | Born | William Weathers † | | Auxiliary Bishop of Westminster, England, Great Britain |
| 16 Nov | | Born | Thomas Langdon Grace, O.P. † | | Bishop Emeritus of Saint Paul, Minnesota, USA |
| 18 Nov | | Born | Giovanni Giacomo della Bona † | | Bishop of Trento, Italy |
| 57.0 | Selected | Konstantin Stanić † | Bishop of Križevci (Kreutz) (Križevci), Croatia |
| 20 Nov | 71.6 | Ordained Bishop | Józef Gabriel Gembart † | Titular Bishop of Patara | Auxiliary Bishop of Gniezno e Poznań, Poland |
| 22 Nov | | Born | Jean-Baptiste-Irénée Callot † | | Bishop of Oran, Algeria |
| 30 Nov | 50.1 | Installed | Francesco Canali † | Bishop of Spoleto, Italy | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 67.5 | Died | [Charles-Robert Lamy] † | Bishop Emeritus of [Eure (Constitutional), France] |
| Dec | 64.2 | Died | Cayetano Pallás, O.P. † | Bishop of Nueva Segovia, Philippines |
| 1 Dec | 75.5 | Selected | Miguel Antonio da Cruz, O.F.M. Disc. † | Archbishop of Braga, Portugal |
| 5 Dec | 85.2 | Died | Dominique Maria de Santini † | Bishop Emeritus of Nebbio, France |
| 8 Dec | | Born | Concetto Focaccetti † | | Bishop Emeritus of Acquapendente, Italy |
| 9 Dec | 79.7 | Died | Joseph-Antoine (Maxime) Guisolan, O.F.M. Cap. † | Bishop of Lausanne, Switzerland |
| 11 Dec | 25.7 | Ordained Priest | Luigi Fransoni † | Priest | Archbishop of Torino {Turin}, Italy |
| 14 Dec | | Born | Justo Alfonso Aguilar, O.P. † | | Coadjutor Vicar Apostolic Emeritus of Fo-Kien, China |
| 58.6 | Died | Jean-Louis Florens, M.E.P. † | Coadjutor Vicar Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China |
| Born | Joachim-Hyacinthe Gonin, O.P. † | | Archbishop of Port of Spain, Trinidad and Tobago, Antilles |
| 17 Dec | 27.5 | Ordained Priest | Louis-Robert Paysant † | Priest | Bishop of Angers, France |
| 28.3 | Ordained Priest | Gabriel Henri Jérôme de Solages † | Priest | Prefect of Bourbon, Réunion |
| 19 Dec | 64.3 | Confirmed | Lorenzo Algüero Ribera, O.S.M. † | Bishop of Segorbe, Spain |
| 60.8 | Appointed | Blas Joaquín Álvarez de Palma † | Archbishop of Granada, Spain |
| 72.1 | Appointed | Veremundo Anselmo Arias y Teixeiro, O.S.B. † | Archbishop of Valencia, Spain |
| 53.5 | Confirmed | José Antonio Azpeitia y Sáenz de Santamaria † | Bishop of Lugo, Spain | Bishop of Cartagena (en España) |
| 45.6 | Appointed | Anselmo Basilici † | Coadjutor Bishop of Sabina, Italy | Bishop of Nepi e Sutri, Italy |
| 45.6 | Appointed | Anselmo Basilici † | Titular Bishop of Lydda | Bishop of Nepi e Sutri, Italy |
| 64.4 | Confirmed | Manuel Benito y Tabernero † | Bishop of Solsona, Spain |
| 50.9 | Appointed | Michelangelo Calmet † | Bishop of Pult (Pulati), Albania | Bishop of Ripatransone, Italy |
| 54.9 | Confirmed | Ildefonso Cañedo y Vigil † | Bishop of Málaga, Spain | Archbishop of Burgos, Spain |
| 34.1 | Confirmed | João Damasceno Da Silva Póvoas † | Bishop of Angola e Congo |
| Confirmed | Grégoire II Pierre VI Djeranian † | Patriarch of Cilicia (Armenian), Lebanon |
| Appointed | Antonio Dodmassei † | Bishop of Shkodrë (Scutari), Albania |
| 48.9 | Appointed | Francesco Saverio Dracopoli † | Bishop of Chios (Scio), Greece |
| Confirmed | Yuhanna El-Helou (Dolce) † | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| 48.1 | Confirmed | Andrés Esteban y Gómez † | Bishop of Ceuta, Spain | Bishop of Jaén, Spain |
| 69.5 | Appointed | Sigismund Ernst von Hohenwart, O.E.S.A. † | Bishop of Linz, Austria |
| 26.3 | Ordained Deacon | Ferdinando Elano Kahn, O.P. † | Deacon of Order of Friars Preachers | Bishop of Tiraspol, Moldova |
| 60.8 | Confirmed | Juan Nepomuceno de Lera y Cano † | Bishop of Barbastro, Spain | Bishop of Segovia, Spain |
| 51.5 | Confirmed | José Antonio Joaquín Pérez Martínez y Robles † | Bishop of Tlaxcala (Puebla de los Angeles), México |
| 54.4 | Appointed | Pedro Manuel Ramírez de la Piscina † | Bishop of Ciudad Rodrigo, Spain |
| 62.1 | Confirmed | Ignacio Ramón Roda † | Bishop of León, Spain |
| 58.2 | Confirmed | Manuel Ros de Medrano † | Bishop of Tortosa, Spain |
| 48.2 | Confirmed | Giovanni Sergio † | Bishop of Cefalù, Italy |
| 63.9 | Confirmed | Emmanuel de Sousa Carvalho, M.I. † | Bishop of Beja, Portugal | Bishop-Elect |
| 21 Dec | 23.1 | Ordained Priest | Giacomo Bignotti † | Priest | Bishop of Adria, Italy |
| 24 Dec | | Born | Laurence Bonaventure Sheil, O.F.M. Ref. † | | Bishop of Adelaide, Australia |
| 26 Dec | | Born | Charles-Marie-Denis-Anselme Nouvel de La Flèche, O.S.B. † | | Bishop of Quimper [Cornouailles](-Léon), France |
| 27 Dec | 45.6 | Ordained Bishop | Anselmo Basilici † | Titular Bishop of Lydda | Bishop of Nepi e Sutri, Italy |
| 53.1 | Ordained Bishop | Juan de Cavia y González † | Bishop of Osma, Spain |
| Born | Ivan Pavlešić † | | Auxiliary Bishop of Zagreb, Croatia |
| 60.9 | Ordained Bishop | Isidoro Pérez de Celis, M.I. † | Bishop of Segovia, Spain |
| 48.2 | Ordained Bishop | Giovanni Sergio † | Bishop of Cefalù, Italy |
| 28 Dec | | Born | Juan Lozano Torreira † | | Bishop of Palencia, Spain |
| 68.7 | Died | Mauro Paolo Giuseppe Antonino Michele Maria Mari, O.S.B. † | Titular Bishop of Dora | Bishop Emeritus |
| 29 Dec | 37.6 | Resigned | Luis María Borbón y Vallábriga † | Administrator of Sevilla {Seville}, Spain | Cardinal, Archbishop of Toledo, Spain |
| 65.9 | Died | Francisco Rousset de Jesús y Rosas, O.F.M. Obs. † | Bishop of Sonora, México |
| 30 Dec | 60.6 | Appointed | Francesco Bertazzoli † | Secretary of the Congregation for Studies | Cardinal, Prefect |
| 65.1 | Selected | Václav (Wenzel) Léopold von Chlumčansky † | Archbishop of Praha {Prague}, Czechia |