| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Francesco Albertini † | | Bishop of Terracina, Priverno e Sezze, Italy |
| Died | Deodato Andrea Aldobrandini † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| Died | Giovanni Anzani † | Bishop of Campagna, Italy |
| Born | Nicholas Joseph Archdeacon † | Cork | Bishop of Kilmacduagh, Ireland |
| Died | Jean-Baptiste-Antoine de Brancas † | Archbishop of Aix, France |
| Appointed | John Carpenter † | Archbishop of Dublin, Ireland |
| 37.8 | Appointed | Jean-Antoine de Castellane Saint-Mauris † | Bishop of Lavaur, France | Bishop Emeritus |
| Appointed | Nicola Ferri † | Bishop of Campagna, Italy |
| Appointed | Agostino Gervasio, O.S.A. † | Bishop of Gallipoli, Italy | Archbishop of Capua, Italy |
| 22.5 | Ordained Priest | Viktor Franz Anton von Glutz-Ruchti † | Priest of Lausanne, Switzerland | Auxiliary Bishop of Basel, Switzerland |
| Appointed | Agustín Gorritátegui † | Bishop of Cuzco, Peru |
| 50.5 | Ordained Bishop | Karl Johann Reichsgraf von Herberstein † | Titular Bishop of Myndus | Bishop of Ljubljana, Slovenia |
| 52.1 | Appointed | Francesco Antonio Marcucci † | Bishop of Montalto, Italy |
| Born | Kyran Marum † | | Bishop of Ossory, Ireland |
| Appointed | João Rafael de Mendonça † | Bishop of Pinhel, Portugal | Bishop of Porto, Portugal |
| 51.0 | Appointed | Giovanni Morosini † | Bishop of Chioggia, Italy | Bishop of Verona, Italy |
| 33.0 | Ordained Priest | James Louis O'Donel, O.F.M. † | Priest of Order of Friars Minor | Vicar Apostolic Emeritus of Newfoundland, Canada |
| 23.0 | Ordained Priest | Tomasz Ostaszewski † | Priest of Society of Jesus | Bishop of Płock, Poland |
| 50.4 | Appointed | Inácio de São Caetano, O.C.D. † | Bishop of Penafiel, Portugal | Bishop Emeritus |
| Appointed | Giacinto Amedeo Vagnone † | Bishop of Alba (Pompea), Italy | Bishop Emeritus |
| 7 Jan | | Died | Francesco Brancia † | Archbishop of Chieti, Italy |
| 8 Jan | 61.2 | Died | Ján Terlanday † | Bishop of the unknown of Titular See |
| 14 Jan | 67.2 | Ordained Bishop | Alsonso Francisco Arango † | Bishop of Orense, Spain |
| 42.7 | Ordained Bishop | Juan Llano Ponte † | Titular Bishop of Lares | Bishop of Oviedo, Spain |
| 17 Jan | 66.7 | Appointed | Juan Portugal de la Puebla † | Archbishop (Personal Title) of Mantova, Italy | Patriarch of Constantinople, Turkey |
| 21 Jan | 62.5 | Ordained Bishop | Joaquín de Eleta, O.F.M. † | Titular Archbishop of Thebae Phthiotides | Bishop of Osma, Spain |
| 44.7 | Ordained Bishop | Johann Heinrich von Kerens, S.J. † | Bishop of Roermond, Netherlands | Bishop of Sankt Pölten, Austria |
| 29 Jan | 44.5 | Appointed | Santiago José Echaverría Nieto de Osorio y Elguera † | Bishop of Santiago de Cuba | Bishop of Tlaxcala, Tlaxcala, México |
| 49.1 | Appointed | Mariano Martí † | Bishop of Caracas, Santiago de Venezuela |
| 66.7 | Appointed | Juan Portugal de la Puebla † | Archbishop of the unknown of Titular See | Patriarch of Constantinople, Turkey |
| 46.9 | Appointed | Francesco Ferdinando Sanseverino † | Bishop of Alife, Italy | Archbishop of Palermo, Italy |
| Feb | 53.1 | Confirmed | Henri-Louis-René Des Nos † | Bishop of Verdun, France |
| 2 Feb | | Born | Tomas Manoel de Noronha e Brito, O.P. † | Lisboa, Portugal | Bishop Emeritus of Olinda, Brazil |
| 4 Feb | 46.9 | Ordained Bishop | Francesco Ferdinando Sanseverino † | Bishop of Alife, Italy | Archbishop of Palermo, Italy |
| 48.2 | Ordained Bishop | Juan Varela Fondevilla y Verea † | Titular Bishop of Tanis | Auxiliary Bishop of Santiago de Compostela, Spain |
| 6 Feb | 86.2 | Died | Franz Kaspar von Franken-Siersdorf † | Auxiliary Bishop of Köln {Cologne}, Germany |
| 7 Feb | | Born | Andrew Carruthers † | Drumillan Miln | Vicar Apostolic of Eastern District, Scotland, Great Britain |
| 12 Feb | | Born | Guillaume-Aubin de Villèle † | Caraman | Archbishop of Bourges, France |
| 22 Feb | | Born | Jean Arnold Barret † | Borgloon | Bishop of Namur {Namen}, Belgium |
| 23 Feb | | Born | Claude-Louis de Lesquen † | Trégon | Bishop Emeritus of Rennes, France |
| Born | Antonio Pallotta † | Ferrara | Cardinal, Prefect of the Apostolic Signatura |
| 24 Feb | | Born | James Buckley † | London | Vicar Apostolic of Trinidad, Trinidad and Tobago, Antilles |
| 5 Mar | 77.6 | Appointed | Aleixo de Miranda Henriques, O.P. † | Bishop of Porto, Portugal |
| 46.0 | Appointed | Manuel do Cenáculo Vilas Boas † | Bishop of Beja, Portugal | Archbishop of Évora, Portugal |
| 7 Mar | | Born | Gregorius Thomas Ziegler, O.S.B. † | Kirchheim bei Ulm | Bishop of Linz, Austria |
| 10 Mar | 65.2 | Died | Charles de Grimaldi d'Antibes † | Bishop of Rodez, France |
| 12 Mar | 57.3 | Appointed | Juan Manuel Argüelles † | Bishop of Palencia, Spain |
| 56.5 | Appointed | Tomás Azpuru Ximénez † | Archbishop of Valencia, Spain |
| 57.2 | Appointed | Tomás de Azpuru de Mellá † | Archbishop of Valencia, Spain |
| 59.8 | Appointed | Antonio Fernández Tobar † | Bishop of Tui, Spain |
| 60.7 | Appointed | Luigi del Giudice, O.S.B. † | Archbishop of Chieti, Italy |
| 43.4 | Appointed | Karl Aloys Graf von Königsegg und Rothenfels † | Auxiliary Bishop of Köln {Cologne}, Germany |
| 43.4 | Appointed | Karl Aloys Graf von Königsegg und Rothenfels † | Titular Bishop of Myrina | Auxiliary Bishop of Köln {Cologne}, Germany |
| Appointed | Miguel Moreno y Ollo † | Bishop of Ayacucho o Huamanga, Peru |
| 47.2 | Appointed | Juan Manuel Moscoso y Peralta † | Titular Bishop of Tricomia | Archbishop of Granada, Spain |
| 47.2 | Confirmed | Juan Manuel Moscoso y Peralta † | Auxiliary Bishop of Arequipa, Peru | Archbishop of Granada, Spain |
| 31.3 | Confirmed | Ferdinand-Maximilien-Mériadec de Rohan-Guémené † | Archbishop of Bordeaux, France | Archbishop Emeritus of Cambrai, France |
| 18 Mar | 24.0 | Ordained Priest | Rafael de Castello de Vide, O.F.M. † | Priest of Order of Friars Minor | Bishop of São Tomé e Príncipe |
| 20 Mar | 60.2 | Appointed | Simon Ambros Stock † | Titular Bishop of the unknown of Titular See |
| 23 Mar | | Appointed | Miguel António Barreto de Meneses † | Bishop of Bragança, Portugal | Bishop of Miranda, Portugal |
| 30 Mar | 78.0 | Died | Pascual de los Herreros † | Bishop of León, Spain |
| 24.5 | Ordained Priest | Charles Mannay † | Priest of Clermont, France | Bishop of Rennes, France |
| 2 Apr | | Born | Pierre-Alexandre Coupperie † | La Chapelle-Palluau, France | Bishop of Baghdad, Iraq |
| 3 Apr | | Born | Vicente Román Linares, O. Praem. † | Valladolid | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 6 Apr | 76.0 | Died | Blas Roldán, O.S.H. † | Bishop of Segorbe, Spain |
| 8 Apr | 35.3 | Ordained Bishop | Jules-Basile Ferron de La Ferronnays † | Bishop of Saint-Brieuc, France | Bishop of Lisieux, France |
| 31.4 | Ordained Bishop | Ferdinand-Maximilien-Mériadec de Rohan-Guémené † | Archbishop of Bordeaux, France | Archbishop Emeritus of Cambrai, France |
| 11 Apr | | Born | Pietro Ignazio Marolda † | Muro | Bishop of Pozzuoli, Italy |
| 14 Apr | 26.9 | Ordained Priest | Pietro Leopardi † | Priest of Recanati-Loreto, Italy | Bishop of Ancona e Numana, Italy |
| 48.3 | Succeeded | Charles Walmesley, O.S.B. † | Vicar Apostolic of Western District, England, Great Britain |
| 83.3 | Died | Lawrence William York, O.S.B. † | Vicar Apostolic Emeritus of Western District, England, Great Britain |
| 20 Apr | 64.1 | Died | Franz Christoph Reichsfreiherr von Hutten zu Stolzenfels † | Cardinal, Bishop of Speyer, Germany |
| 22 Apr | 39.3 | Ordained Bishop | Louis-Henri de Bruyère de Chalabre † | Bishop of Saint-Pons-de-Thomières, France |
| 43.5 | Ordained Bishop | Karl Aloys Graf von Königsegg und Rothenfels † | Titular Bishop of Myrina | Auxiliary Bishop of Köln {Cologne}, Germany |
| Born | Pierre-Joseph Rey † | Mégevette, France | Bishop of Pinerolo, Italy |
| 13 May | 57.4 | Installed | Tomás de Azpuru de Mellá † | Archbishop of Valencia, Spain |
| 19 May | 79.4 | Died | Gilbert Gaspard de Montmorin de Saint-Hérem † | Bishop of Langres, France |
| 28 May | 49.7 | Appointed | Francisco de los Ríos y Armengol, O.P. † | Bishop of Panamá |
| 62.2 | Appointed | Antonio Gómez de la Torre y Jaraveitia † | Bishop of Jaén, Spain |
| 29 May | 49.2 | Appointed | Damian August Philipp Karl Reichsgraf von Limburg-Styrum † | Bishop of Speyer, Germany |
| 3 Jun | 62.2 | Ordained Bishop | José Vicente Díaz Bravo, O. Carm. † | Bishop of Durango, Durango, México |
| 8 Jun | | Born | Anton Alois Buchmayer † | Waidhofen | Bishop of Sankt Pölten, Austria |
| 9 Jun | | Born | Ferdinando Maria Pignatelli, C.R. † | Naples | Cardinal, Archbishop of Palermo, Italy |
| 18 Jun | | Born | Pedro Paulo de Figuereido da Cunha e Melo † | Taveiro | Cardinal, Archbishop of Braga, Portugal |
| 24 Jun | 56.8 | Ordained Bishop | Tomás Azpuru Ximénez † | Archbishop of Valencia, Spain |
| 34.8 | Appointed | Jérôme-Marie Champion de Cicé † | Bishop of Rodez, France | Archbishop of Aix, France |
| 60.1 | Ordained Bishop | Antonio Fernández Tobar † | Bishop of Tui, Spain |
| 32.0 | Appointed | César-Guillaume de la Luzerne † | Bishop of Langres, France | Cardinal, Bishop Emeritus |
| 9 Jul | | Born | Kaspar Max Freiherr Droste zu Vischering † | Vorheim | Bishop of Münster, Germany |
| 18 Jul | 53.6 | Appointed | William Walton † | Coadjutor Vicar Apostolic of Northern District, England, Great Britain | Vicar Apostolic |
| 53.6 | Appointed | William Walton † | Titular Bishop of the unknown of Titular See | Vicar Apostolic of Northern District, England, Great Britain |
| 23 Jul | | Born | Domingo de Silos Santiago Apollinario Moreno, O.S.B. † | Caños, Spain | Bishop of Cádiz, Spain |
| 29 Jul | | Born | Jules-François de Simony † | Toulon | Bishop Emeritus of Soissons (-Laon), France |
| 31 Jul | 29.0 | Ordained Priest | Ignacy Jan Zygmunt von Raczynski † | Priest of Society of Jesus | Archbishop Emeritus of Gniezno, Poland |
| 4 Aug | 49.6 | Confirmed | Jerónimo Rogado de Carvalhal e Silva † | Bishop of Portalegre, Portugal | Bishop of Guarda, Portugal |
| 6 Aug | 34.9 | Confirmed | Jérôme-Marie Champion de Cicé † | Bishop of Rodez, France | Archbishop of Aix, France |
| 54.8 | Elevated to Cardinal | João Cosme da Cunha (de Nossa Senhora da Porta), O.C.S.A. † | Cardinal, Archbishop of Évora, Portugal |
| 49.7 | Ordained Bishop | François-Mattieu Guasco † | Bishop of Nebbio, France | Bishop of Sagone, France |
| 45.4 | Ordained Bishop | Jean-Joseph-Marie de Guernes † | Bishop of Aleria, France |
| 49.4 | Confirmed | Damian August Philipp Karl Reichsgraf von Limburg-Styrum † | Bishop of Speyer, Germany |
| 67.7 | Appointed | José Domingo Rivero † | Bishop of Ceuta, Spain |
| 66.6 | Appointed | Manoel de Santa Ines Ferreira, O.C.D. † | Archbishop of São Salvador da Bahia, Brazil |
| 13 Aug | | Born | Emmanuele Lodi † | Milano | Bishop of Udine, Italy |
| 14 Aug | 17.1 | Professed | Jakub Ignacy Dederko † | Member of Society of Jesus | Bishop of Minsk, Belarus |
| 20 Aug | 60.2 | Died | Antonio Fernández Tobar † | Bishop of Tui, Spain |
| 26 Aug | 35.0 | Ordained Bishop | Jérôme-Marie Champion de Cicé † | Bishop of Rodez, France | Archbishop of Aix, France |
| 29.7 | Ordained Priest | Giulio Cesare Pallavicini † | Priest of Society of Jesus | Bishop of Luni e Sarzana, Italy |
| 30 Aug | | Born | Vincenzo Macchi † | Capo de Monte | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 4 Sep | | Born | Joseph Bernet † | Saint-Flour | Cardinal, Archbishop of Aix (-Arles-Embrun), France |
| 5 Sep | 17.2 | Professed | Jan Pavel Woronicz † | Member of Society of Jesus | Archbishop of Warszawa {Warsaw}, Poland |
| 10 Sep | 36.4 | Appointed | Scipione Borghèse † | Cardinal-Priest of S. Maria sopra Minerva | Cardinal, Prefect Emeritus of the Prefecture of the Papal Household |
| 36.4 | Elevated to Cardinal | Scipione Borghèse † | Cardinal, Prefect Emeritus of the Prefecture of the Papal Household |
| 59.6 | Appointed | Alonso Cano Nieto, O.SS.T. † | Bishop of Segorbe, Spain |
| 32.2 | Confirmed | César-Guillaume de la Luzerne † | Bishop of Langres, France | Cardinal, Bishop Emeritus |
| 52.0 | Appointed | Baltasar Yusta Navarro † | Bishop of León, Spain | Bishop of Córdoba, Spain |
| 11 Sep | | Born | Ramón María Azpeitia de y Sáenz de Santamaria † | Logroño | Bishop of Tudela, Spain |
| 13 Sep | | Born | Giuseppe Alberghini † | Cento | Cardinal, Cardinal-Priest of S. Prisca |
| 16 Sep | 49.5 | Ordained Bishop | Damian August Philipp Karl Reichsgraf von Limburg-Styrum † | Bishop of Speyer, Germany |
| 20 Sep | | Born | Pedro González Vallejo † | Soto de Cameros | Bishop Emeritus of Mallorca, Spain |
| 21 Sep | | Ordained Bishop | Giacinto Amedeo Vagnone † | Bishop of Alba (Pompea), Italy | Bishop Emeritus |
| 23 Sep | 56.7 | Ordained Priest | Joaquim Borges de Figueroa † | Priest | Archbishop Emeritus of São Salvador da Bahia, Brazil |
| 30 Sep | 32.2 | Ordained Bishop | César-Guillaume de la Luzerne † | Bishop of Langres, France | Cardinal, Bishop Emeritus |
| 12 Oct | | Born | Manuel María Gómez de las Rivas † | Santa María de Garoña | Archbishop of Zaragoza, Spain |
| 14 Oct | 49.8 | Ordained Bishop | Jerónimo Rogado de Carvalhal e Silva † | Bishop of Portalegre, Portugal | Bishop of Guarda, Portugal |
| 21 Oct | 59.7 | Ordained Bishop | Alonso Cano Nieto, O.SS.T. † | Bishop of Segorbe, Spain |
| Born | Friedrich Klemens Freiherr von Ledebur † | Düsse | Bishop of Paderborn, Germany |
| 27 Oct | | Born | Pietro Francesco Galeffi † | Cesena | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 28 Oct | 27.7 | Professed | Joseph Konrad Freiherr von Schroffenberg, C.R.S.A. † | Member of Confederation of Canons Regular of St. Augustine | Bishop of Freising, Germany |
| 52.1 | Ordained Bishop | Baltasar Yusta Navarro † | Bishop of León, Spain | Bishop of Córdoba, Spain |
| 3 Nov | | Born | James Whitfield † | Liverpool, Great Britain | Archbishop of Baltimore, Maryland, USA |
| 4 Nov | 38.7 | Appointed | Jean-de-Dieu-Raymond de Boisgelin de Cucè † | Archbishop of Aix, France | Cardinal, Archbishop of Tours, France |
| 33.5 | Ordained Priest | Franz Egon Freiherr von Fürstenberg † | Priest of Osnabrück, Germany | Bishop of Hildesheim, Germany |
| 18 Nov | 41.1 | Ordained Bishop | Antonio de Luna, O.F.M. † | Bishop of Nueva Caceres, Philippines |
| Dec | 68.1 | Ordained Bishop | José Domingo Rivero † | Bishop of Ceuta, Spain |
| 6 Dec | 85.5 | Died | Neri Maria Corsini † | Cardinal, Prefect of the Apostolic Signatura |
| Born | Francesco-Saverio Zachariasiewicz † | Stanislaopoli | Bishop of Tarnów, Poland |
| 8 Dec | | Born | Antonio Maria de J. Campos Moreno † | San Felipe del Obraje, Spain | Titular Bishop of Rhesaina |
| Installed | Giacinto Amedeo Vagnone † | Bishop of Alba (Pompea), Italy | Bishop Emeritus |
| 11 Dec | 63.9 | Died | Diego Rodríguez de Rivas y Velasco † | Bishop of Guadalajara, Jalisco, México |
| 12 Dec | 55.2 | Appointed | Lucas Ramírez Galán, O.F.M. † | Archbishop (Personal Title) of Tui, Spain | Bishop |
| 22 Dec | 24.1 | Ordained Priest | Giuseppe Carrano † | Priest | Titular Archbishop of Traianopolis in Rhodope |
| 23.0 | Ordained Priest | Richard Luke Concanen, O.P. † | Priest of Order of Friars Preachers | Bishop of New York, New York, USA |
| 25.3 | Ordained Priest | Klaus Münst, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Titular Bishop of Myndus |
| 27 Dec | 65.4 | Died | Manuel Macías Pedrejón † | Bishop of Lérida, Spain |
| 24.3 | Ordained Priest | Joaquim do Rosário Vieira, O.F.M. † | Priest of Order of Friars Minor | Bishop of Beja, Portugal |
| 31 Dec | 50.0 | Installed | Jerónimo Rogado de Carvalhal e Silva † | Bishop of Portalegre, Portugal | Bishop of Guarda, Portugal |