| Date | Age | Event | Bishop | Title | Current Title |
| 1 Oct | 73.8 | Died | François-René Boussen † | Bishop of Brugge {Bruges}, Belgium |
| 3 Oct | 36.7 | Appointed | Alexandre-Hippolyte-Xavier Monnet, C.S.Sp. † | Titular Bishop of Pella | Vicar Apostolic of Madagascar, Madagascar |
| 36.8 | Appointed | Jacques-Maurice des Landes d’Aussac de Saint Palais † | Bishop of Vincennes, Indiana, USA |
| 53.5 | Appointed | James Oliver Van de Velde, S.J. † | Bishop of Chicago, Illinois, USA | Bishop of Natchez, Mississippi, USA |
| 7 Oct | 22.2 | Ordained Priest | Federico León Aneiros (Aneyros) † | Priest | Archbishop of Buenos Aires, Argentina |
| 66.4 | Selected | Leone Ciampa, O.F.M. Disc. † | Archbishop of Sorrento, Italy |
| 52.0 | Selected | Gennaro di Giacomo † | Bishop of Alife, Italy |
| 46.9 | Selected | Leonardo Moccia † | Bishop of Gallipoli, Italy |
| 51.5 | Selected | Annibale-Raffaele Montalcini, C.Ss.R. † | Archbishop of Santa Severina, Italy |
| 41.6 | Selected | Giuseppe-Maria Mucedola † | Bishop of Conversano, Italy |
| 47.8 | Selected | Giuseppe Pappalardo † | Archbishop of Conza e Campagna, Italy | Archbishop Emeritus |
| 65.6 | Selected | Antonio Michele Vaglio † | Bishop of Venosa, Italy |
| 73.0 | Selected | Giacomo de Vincentiis † | Archbishop of Lanciano (e Ortona), Italy |
| 8 Oct | 49.8 | Ordained Bishop | Gil Estéve y Tomás † | Bishop of Puerto Rico (Porto Rico) | Bishop of Tortosa, Spain |
| 35.9 | Installed | James Alipius Goold, O.E.S.A. † | Bishop of Melbourne, Australia | Archbishop of Melbourne, Australia |
| 9 Oct | | Born | Ignace Denis Ephrem Rahmani (Rahamani) † | | Patriarch of Antiochia {Antioch} (Syrian), Lebanon |
| 68.2 | Died | Juan Gilberto Ruiz Capucín y Feijó † | Bishop of Cuenca, Spain |
| 10 Oct | 47.8 | Selected | Marie-Julien Meirieu † | Bishop of Digne, France | Bishop Emeritus |
| 15 Oct | 62.8 | Ordained Bishop | Llucià Casadevall i Duran † | Bishop of Vic, Spain |
| Born | Charles Henry Colton † | | Bishop of Buffalo, New York, USA |
| 18 Oct | 71.7 | Ordained Bishop | Gaspar Cos y Soberón † | Bishop of Calahorra y La Calzada, Spain |
| 22.4 | Ordained Priest | Bl. Mamerto Esquiú y Medina, O.F.M. Obs. † | Priest of Order of Observant Friars Minor | Bishop of Córdoba (Tucumán), Argentina |
| 19 Oct | 53.2 | Resigned | Alessandro Asinari di San Marzano † | Apostolic Nuncio to Belgium | Titular Archbishop of Ephesus |
| 43.5 | Selected | Pierre-Louis Coeur † | Bishop of Troyes, France |
| 48.6 | Selected | Jean-Marie-Mathias Debelay † | Archbishop of Avignon, France |
| 22 Oct | 52.7 | Ordained Bishop | Damián Gordo Sáez † | Bishop of Tortosa, Spain |
| 25 Oct | | Born | Gaetano Maria de Angelis, O.F.M. Conv. † | | Archbishop of Athēnai {Athens}, Greece |
| 75.8 | Died | Aloisio San Vitale † | Bishop of Piacenza, Italy |
| 28 Oct | 29.6 | Professed | Nicolas-Michel Krick, M.E.P. † | Priest of La Société des Missions Etrangères | Prefect of Lhassa, China |
| 29 Oct | 22.5 | Ordained Priest | Domenico Bucchi-Accica † | Priest of Norcia, Italy | Bishop of Orvieto, Italy |
| 76.8 | Ordained Bishop | José Manuel Plaza de la Tejera, O.F.M. Obs. † | Bishop of Cuenca, Ecuador |
| 31 Oct | 17.9 | Entered | Pierre-Paul Durieu, O.M.I. † | Member of Oblates of Mary Immaculate | Bishop of New Westminster, British Columbia, Canada |
| 1 Nov | 82.2 | Died | Carlo Fontanini, C.M. † | Bishop of Concordia (Sagittaria), Italy |
| 2 Nov | | Born | François-Xavier Cloutier † | | Bishop of Trois-Rivières, Québec, Canada |
| 4 Nov | 74.4 | Died | José Higinio Madalengoitia y Sanz de Zárate † | Bishop of Trujillo, Peru |
| Born | Sebastiano Francisco Pifferi, O.F.M. † | | Archbishop of La Plata o Charcas, Bolivia |
| 5 Nov | 36.8 | Ordained Bishop | Alexandre-Hippolyte-Xavier Monnet, C.S.Sp. † | Titular Bishop of Pella | Vicar Apostolic of Madagascar, Madagascar |
| 9 Nov | 51.8 | Died | Paolo Sardi, O.F.M. Conv. † | Apostolic Visitor (Visitator) of Moldavia |
| 12 Nov | 73.0 | Ordained Bishop | Girolamo Gavi † | Titular Bishop of Meloë in Lycia | Apostolic Administrator of Livorno, Italy |
| 70.8 | Ordained Bishop | Tomás de Portes e Infante † | Archbishop of Santo Domingo, Dominican Republic |
| Born | Stanislas-Arthur-Xavier Touchet † | | Cardinal, Bishop of Orléans, France |
| 14 Nov | 39.3 | Resigned | Vincenzo Tizzani, C.R.L. † | Bishop of Terni, Italy | Bishop Emeritus |
| 15 Nov | 39.7 | Selected | Giuseppe de’ Bianchi Dottula † | Archbishop of Trani e Nazareth e Bisceglie, Italy | Archbishop of Trani e Barletta (e Nazareth e Bisceglie), Italy |
| 38.1 | Appointed | Innocenzo Ferrieri † | Apostolic Nuncio to Belgium | Cardinal, Prefect of the Congregation of Bishops and Regulars |
| 42.6 | Selected | Domenico Ventura † | Archbishop of Amalfi, Italy |
| 21 Nov | 26.8 | Perpetual Vows | Louis-Joseph D’Herbomez, O.M.I. † | Member of Oblates of Mary Immaculate | Vicar Apostolic of British Columbia, Canada |
| 22 Nov | 73.1 | Retired | Mariano Bianco † | Archbishop of Amalfi, Italy | Archbishop Emeritus |
| 24 Nov | | Born | Valeriano Menéndez y Conde † | | Archbishop of Valencia, Spain |
| 29 Nov | 72.7 | Resigned | Jean-François de Hercé † | Bishop of Nantes, France | Bishop Emeritus |
| 69.1 | Resigned | Giovanni Soglia Ceroni † | Secretary of State | Cardinal, Secretary Emeritus |
| 30 Nov | 41.1 | Ordained Bishop | Ignacy Hołowiński † | Titular Bishop of Carystus | Archbishop of Mohilev, Belarus |
| 45.2 | Selected | Antoine-Matthias-Alexandre Jacquemet † | Bishop of Nantes, France |
| 28.6 | Ordained Bishop | Aloys Kobès, C.S.Sp. † | Titular Bishop of Methone | Vicar Apostolic of Senegambia, Senegal |
| Born | Denis O’Donaghue † | | Bishop Emeritus of Louisville, Kentucky, USA |
| Dec | 23.0 | Ordained Deacon | Charles-Martial-Allemand Lavigerie † | Deacon of Paris, France | Cardinal, Archbishop of Alger, Algeria |
| 2 Dec | | Born | Giuseppe Francesco Re † | | Bishop of Alba (Pompea), Italy |
| 3 Dec | 47.6 | Ordained Bishop | Guillaume-Clément Masson, M.E.P. † | Titular Bishop of Laranda | Coadjutor Vicar Apostolic of Southern Tonking {Tonkino Meridionale}, Viet Nam |
| 5 Dec | 46.8 | Ordained Bishop | Kaspar Jastrzębeic Borowski † | Bishop of Lutsk and Zhytomyr (Łuck and Zytomierz), Ukraine | Bishop of Płock, Poland |
| 6 Dec | 42.6 | Appointed | Giacomo Antonelli † | Pro-Secretary of the Secretariat of State | Cardinal, Secretary |
| 8 Dec | 24.3 | Ordained Priest | Caspar Henry Borgess † | Priest of Cincinnati, Ohio, USA | Bishop Emeritus of Detroit, Michigan, USA |
| Born | Ignatius Gartlan, S.J. † | | Superior Emeritus of Zambese, Zimbabwe |
| 47.0 | Professed | Ephrem (August) Van der Meulen, O.C.S.O. † | Priest of Order of Cistercians of the Strict Observance | Vicar General |
| 10 Dec | 45.1 | Ordained Bishop | Alerano Pallavicino † | Titular Archbishop of Perge | Auxiliary Bishop of Genova, Italy |
| 11 Dec | 43.7 | Confirmed | Pierre-Louis Coeur † | Bishop of Troyes, France |
| 48.8 | Confirmed | Jean-Marie-Mathias Debelay † | Archbishop of Avignon, France |
| 47.0 | Confirmed | Christoph Florentius Kött † | Bishop of Fulda, Germany |
| 39.4 | Appointed | Antonio Magrini † | Bishop of Terni, Italy | Bishop of Forli, Italy |
| 39.4 | Appointed | Jean-Baptist Malou † | Bishop of Brugge {Bruges}, Belgium |
| 55.4 | Confirmed | Emanuele Marongiu Maccioni † | Bishop of Galtelli-Nuoro (Galtelly Nori), Italy | Bishop Emeritus |
| 48.0 | Confirmed | Marie-Julien Meirieu † | Bishop of Digne, France | Bishop Emeritus |
| 37.7 | Appointed | Antonino Merciai, O.P. † | Apostolic Delegate to Mesopotamia, Kurdistan, and Lesser Armenia, Iraq |
| 37.7 | Appointed | Antonino Merciai, O.P. † | Titular Archbishop of Theodosiopolis | Apostolic Delegate to Mesopotamia, Kurdistan, and Lesser Armenia, Iraq |
| 47.0 | Confirmed | Leonardo Moccia † | Bishop of Gallipoli, Italy |
| 51.7 | Confirmed | Annibale-Raffaele Montalcini, C.Ss.R. † | Archbishop of Santa Severina, Italy |
| 48.3 | Confirmed | Patrício Xavier de Moura, O.S.A. † | Bishop of Santiago de Cabo Verde | Bishop of Funchal, Portugal |
| 41.8 | Confirmed | Giuseppe-Maria Mucedola † | Bishop of Conversano, Italy |
| Born | Bertram Orth † | | Archbishop Emeritus of Victoria, British Columbia, Canada |
| 39.9 | Confirmed | Lorenzo Guglielmo Maria Renaldi † | Bishop of Pinerolo, Italy |
| 15 Dec | 71.9 | Died | Gaspar Cos y Soberón † | Bishop of Calahorra y La Calzada, Spain |
| 16 Dec | 98.8 | Died | Claude-Jean-Joseph Brulley de La Brunière † | Bishop of Mende, France |
| 71.3 | Died | Giovanni Domenico di Guido † | Bishop of Oria, Italy |
| Born | Louis-Hippolyte-Aristide Raguit, M.E.P. † | | Vicar Apostolic of Liaotung and Manchuria, China |
| 17 Dec | 45.8 | Ordained Bishop | Wacław Żyliński † | Bishop of Vilnius, Lithuania | Archbishop of Mohilev, Belarus |
| 18 Dec | | Born | Pierre-Marie Gentet † | | Auxiliary Bishop of Port-au-Prince, Haïti |
| 20 Dec | 60.6 | Selected | Francesco Iavarone † | Bishop of Sant’Agata de’ Goti, Italy |
| 59.0 | Selected | Leonardo Todisco Grande † | Bishop of Ascoli Satriano e Cerignola, Italy |
| 60.6 | Selected | Gabriele Ventriglia † | Bishop of Crotone (Cotrone), Italy | Bishop of Caiazzo, Italy |
| 43.6 | Selected | Luigi Vetta † | Bishop of Nardò, Italy |
| 22 Dec | 66.6 | Confirmed | Leone Ciampa, O.F.M. Disc. † | Archbishop of Sorrento, Italy |
| 48.1 | Appointed | José Maria da Silva Torres, O.S.B. † | Titular Archbishop of Palmyra | Coadjutor Bishop Emeritus of Braga, Portugal |
| 48.1 | Resigned | José Maria da Silva Torres, O.S.B. † | Archbishop of Goa, India | Coadjutor Bishop Emeritus of Braga, Portugal |
| 52.2 | Appointed | Gennaro di Giacomo † | Bishop of Telese o Cerreto Sannita, Italy | Bishop of Alife, Italy |
| 52.2 | Confirmed | Gennaro di Giacomo † | Bishop of Alife, Italy |
| 39.8 | Confirmed | Giuseppe de’ Bianchi Dottula † | Archbishop of Trani e Nazareth e Bisceglie, Italy | Archbishop of Trani e Barletta (e Nazareth e Bisceglie), Italy |
| 48.0 | Confirmed | Giuseppe Pappalardo † | Archbishop of Conza e Campagna, Italy | Archbishop Emeritus |
| 65.9 | Confirmed | Antonio Michele Vaglio † | Bishop of Venosa, Italy |
| 73.2 | Confirmed | Giacomo de Vincentiis † | Archbishop of Lanciano (e Ortona), Italy |
| 23 Dec | 22.8 | Ordained Priest | Luis Bruschetti † | Priest | Titular Bishop of Abydus |
| 22.5 | Ordained Priest | Niccolò d’Orgemont de la Fontaine, O.S.B. † | Priest of Order of Saint Benedict | Abbot of Montecassino, Italy |
| 23.3 | Ordained Priest | Jean-Émile Fonteneau † | Priest of Bordeaux, France | Archbishop of Albi, France |
| 25.9 | Ordained Priest | René-Jean-François Guilmin, C.S.Sp. † | Priest of Coutances, France | Prefect of Isole di Mayotta, Nossi-Bé e Comore, Madagascar |
| 25.0 | Ordained Priest | François-Albert Leuillieux † | Priest | Archbishop of Chambéry, France |
| 23.3 | Ordained Priest | Henri-Abel Mortier † | Priest | Bishop of Digne, France |
| 22.8 | Ordained Priest | Giacinto Rossi, O.P. † | Priest of Order of Friars Preachers | Bishop of Luni, Sarzana e Brugnato, Italy |
| 24.0 | Ordained Priest | Vincenzo Salvatore † | Priest | Bishop of Gravina e Irsina (Montepeloso), Italy |
| 23.7 | Ordained Priest | Thomas William Wilkinson † | Priest of Northern District, England, Great Britain | Bishop of Hexham and Newcastle, England, Great Britain |
| 24 Dec | 19.3 | Professed | Raffaele Capone, C.Ss.R. † | Member of Congregation of the Most Holy Redeemer | Bishop of Muro Lucano, Italy |
| 69.9 | Died | Lorenzo Parigini † | Bishop of Urbania e Sant’Angelo in Vado, Italy |
| 25 Dec | 23.9 | Ordained Priest | José Nicanor Corona e Izarraraz † | Priest | Bishop of San Luis Potosí, México |
| Born | Patrick Joseph O’Connor † | | Bishop of Armidale, Australia |
| 27 Dec | 64.0 | Ordained Bishop | José María Luciano Becerra y Jiménez † | Bishop of Chiapas (Ciudad Real de Chiapas), México | Bishop of Tlaxcala (Puebla de los Angeles), México |
| 29 Dec | 69.5 | Died | Johann Stanislaus Kutowski † | Auxiliary Bishop of Chelmno (Culma, Kulm), Poland |
| 30 Dec | 60.1 | Died | Peter Leopold Kaiser † | Bishop of Mainz, Germany |
| 31 Dec | 65.0 | Appointed | Luigi Maria Parisio (Canisio) † | Archbishop of Gaeta, Italy |