| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 77.0 | Died | Adeodato Andrea Aldobrandini (Bivignano) † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 22.6 | Ordained Priest | Angelo Antonio Anselmi † | Priest | Bishop of San Severino, Italy |
| 68.2 | Died | Giovanni Anzani † | Bishop of Campagna, Italy |
| Born | Nicholas Joseph Archdeacon † | Cork | Bishop of Kilmacduagh, Ireland |
| 37.8 | Appointed | Jean-Antoine de Castellane Saint-Mauris † | Bishop of Lavaur, France | Bishop Emeritus |
| 88.5 | Died | Eusebio Ciani † | Bishop of Massa Marittima, Italy |
| 69.7 | Died | Giacomo Filippo Consoli † | Bishop of Amelia, Italy |
| 76.5 | Died | Luigi d'Alessandro † | Archbishop of Bari (-Canosa), Italy |
| Appointed | Corrado Deodato de Moncada † | Archbishop of Messina, Italy |
| 60.9 | Appointed | Nicola Ferri † | Bishop of Campagna, Italy |
| 22.5 | Ordained Priest | Viktor Franz Anton von Glutz-Ruchti † | Priest of Lausanne, Switzerland | Auxiliary Bishop of Basel, Switzerland |
| 50.5 | Ordained Bishop | Karl Johann Reichsgraf von Herberstein † | Titular Bishop of Myndus | Bishop of Ljubljana, Slovenia |
| Born | Kyran Marum † | | Bishop of Ossory, Ireland |
| Appointed | Joăo Rafael de Mendonça † | Bishop of Pinhel, Portugal | Bishop of Porto, Portugal |
| 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 Săo Caetano, O.C.D. † | Bishop of Penafiel, Portugal | Bishop Emeritus |
| Died | Giovanni Maria Spinelli † | Archbishop of Messina, Italy |
| 59.2 | Appointed | Nicolas (Angelo Odardo) Stefanini † | Bishop of Sagone, France | Bishop of Acci and Mariana, France |
| 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 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 | 68.0 | Died | Paulo de Carvalho de Mendoça † | Cardinal, |
| 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 | 68.1 | Elevated to Cardinal | Paulo de Carvalho de Mendoça † | Cardinal, |
| 40.0 | Appointed | Agostino Gervasio, O.S.A. † | Bishop of Gallipoli, Italy | Archbishop of Capua, Italy |
| 44.5 | Appointed | Santiago José Echaverría Nieto de Osorio y Elguera † | Bishop of Santiago de Cuba | Bishop of Tlaxcala, Tlaxcala, México |
| 55.4 | Elevated to Cardinal | Mario Marefoschi Compagnoni † | In Pectore | Cardinal, Prefect of the Congregation of Rites |
| 49.1 | Appointed | Mariano Martí † | Bishop of Caracas, Santiago de Venezuela |
| 49.8 | Appointed | Giovanni Battista de Pergen † | Bishop of Mantova, Italy |
| 66.7 | Appointed | Juan Portugal de la Puebla † | Archbishop of the Titular See | Patriarch of Constantinople, Turkey |
| 46.9 | Appointed | Francesco Ferdinando Sanseverino † | Bishop of Alife, Italy | Archbishop of Palermo, Italy |
| 64.9 | Appointed | Nicola Spedalieri † | Bishop of Oppido Mamertina, 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 | Carlo Cavalieri Manassi † | Comacchio | Bishop of Terracina, Priverno e Sezze, Italy |
| Born | Guillaume-Aubin de Villčle † | 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 | | Born | Camillo Alleva † | Napoli | Archbishop of Salerno (-Acerno), Italy |
| 57.3 | Appointed | Juan Manuel Argüelles † | Bishop of Palencia, Spain |
| 56.5 | Appointed | Tomás Azpuru Ximénez † | Archbishop of Valencia, Spain |
| 49.8 | Appointed | Martino Bianchi † | Archbishop of Lucca, Italy |
| 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 Săo Tomé e Príncipe |
| 20 Mar | 60.2 | Appointed | Simon Ambros Stock † | Titular Bishop of the 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 |
| 31 Mar | 27.3 | Ordained Priest | Francesco Giovanni Scutellari Ajani † | Priest | Titular Bishop of Ioppe |
| 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 |
| 10 Apr | | Appointed | John Carpenter † | Archbishop of Dublin, Ireland |
| 11 Apr | | Born | Pietro Ignazio Marolda, C.Ss.R. † | Muro Lucano | 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 von Hutten zu Stolzenfels † | Cardinal, Bishop of Speyer, Germany |
| 22 Apr | 39.3 | Ordained Bishop | Louis-Henri de Bruyčre de Chalabre † | Bishop of Saint-Pons-de-Thomičres, 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 |
| 2 May | 90.5 | Died | Giacomo Oddi † | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 13 May | 57.4 | Installed | Tomás de Azpuru de Mellá † | Archbishop of Valencia, Spain |
| 15 May | | Died | Giuseppe Maria Centini † | Bishop of Montalto, Italy |
| 19 May | 78.9 | Died | Gilbert-Gaspard de Montmorin de Saint-Hérem de La Chassaigne † | Bishop of Langres, France |
| 28 May | 53.7 | Appointed | Orazio Berarducci † | Bishop of Bitonto, Italy |
| 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 |
| 50.8 | Appointed | Giovanni Morosini † | Bishop of Chioggia, Italy | Bishop of Verona, Italy |
| 41.7 | Appointed | Adelmo Gennaro Pignatelli † | Archbishop of Bari (-Canosa), Italy | Archbishop of Capua, Italy |
| 73.8 | Appointed | Giuseppe Pozzobenelli † | Cardinal-Priest of S. Lorenzo in Lucina | Cardinal, Archbishop of Milano {Milan}, Italy |
| 29 May | 49.2 | Appointed | Damian August Philipp Karl Reichsgraf von Limburg-Styrum † | Bishop of Speyer, Germany |
| 3 Jun | | Ordained Bishop | John Carpenter † | Archbishop of Dublin, Ireland |
| 62.2 | Ordained Bishop | José Vicente Díaz Bravo, O. Carm. † | Bishop of Durango, México |
| 8 Jun | | Born | Anton Alois Buchmayer † | Waidhofen | Bishop of Sankt Pölten, Austria |
| 9 Jun | | Born | Francesco Alberini † | Roma | Bishop of Terracina, Priverno e Sezze, Italy |
| 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 |
| 30.9 | Ordained Priest | Girolamo Pavesi † | Priest | Bishop of Pontremoli, Italy |