| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 61.7 | Died | Gaspare Barletta † | Bishop of Venosa, Italy |
| 42.0 | Appointed | Alexandre-Joseph-Alexis de Bruyère de Chalabre † | Bishop of Saint-Omer, France | Bishop Emeritus |
| 62.8 | Died | Giuseppe Cacace † | Bishop of Monopoli, Italy |
| 17.4 | Professed | Roque José Carpegna Díaz, O.P. † | Member of Order of Friars Preachers | Vicar Apostolic of Fo-Kien, China |
| 21.7 | Professed | Jean-Louis Florens, M.E.P. † | Member of La Société des Missions Etrangères | Coadjutor Vicar Apostolic of Se-Ciuen (Setchoan), China |
| Died | Eugene Geoghegan † | Coadjutor Bishop of Meath, Ireland |
| Born | Francesco Iovinelli, C.M. † | Pomigliano d'Atella | Bishop of Bovino, Italy |
| Died | Basile Jelghaf † | Archbishop of Beirut {Bairut} (Melkite Greek), Lebanon |
| Born | José María Mendizábal † | | Archbishop of La Plata o Charcas, Bolivia |
| 81.0 | Died | Adam Wojna Oranski † | Auxiliary Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| Born | Tomás de Portes e Infante † | Santo Domingo | Archbishop of Santo Domingo, Dominican Republic |
| 63.0 | Ordained Bishop | José Antonio Umeres de Miranda (Humeres) † | Bishop of Panamá |
| 72.3 | Died | Joannes Wenceslaus von Freyenfels † | Auxiliary Bishop of Olomouc, Czech Republic |
| 74.7 | Died | Giovan Filippo Leonardo Vitetti (Vitetta) † | Bishop of Castellaneta, Italy |
| 68.0 | Died | Stanislaus Wykowski † | Auxiliary Bishop of Przemyśl, Poland |
| Born | Josafat Zarskyj † | | Bishop of Pińsk-Turow (Ukrainian), Belarus |
| Jan | 80.7 | Died | Gaspar Negri † | Bishop of Poreč (Parenzo), Croatia |
| 1 Jan | | Born | Ferdinand Corbi † | Napoli | Titular Bishop of Ionopolis |
| 3 Jan | | Born | Antoni Melchior Fijałkowski † | Pszczew | Archbishop of Warszawa {Warsaw}, Poland |
| 4 Jan | 41.2 | Ordained Bishop | Joseph-Anne-Luc Falcombelle de Ponte d’Albaret † | Bishop of Sarlat, France |
| Born | Paolo Polidori † | Iesi, Italy | Cardinal, Prefect of the Congregation of the Council |
| 11 Jan | 69.7 | Died | Jan Dominik Łopaciński † | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 14 Jan | 54.4 | Resigned | François-Gaspard de Jouffroy de Gonssans † | Bishop of Gap, France | Bishop of Le Mans, France |
| 15 Jan | 50.5 | Appointed | Jean-Marie Cuchot d’Herbain † | Auxiliary Bishop of Trier, Germany | Auxiliary Bishop Emeritus |
| 50.5 | Appointed | Jean-Marie Cuchot d’Herbain † | Titular Bishop of Ascalon | Auxiliary Bishop Emeritus of Trier, Germany |
| 18 Jan | 62.9 | Ordained Bishop | Juan Ignacio de la Rocha † | Bishop of Michoacán, México |
| 23 Jan | | Born | Gennaro Pasca † | Napoli | Bishop Emeritus of Nola, Italy |
| 24 Jan | | Died | Daniel (O’)Kearney † | Bishop of Limerick, Ireland |
| 25 Jan | 34.0 | Ordained Bishop | Louis-Apolinaire de La Tour du Pin-Montauban † | Bishop of Nancy, France | Bishop of Troyes, France |
| 28 Jan | | Appointed | Gherardo Cortenovis, B. † | Vicar Apostolic of Ava e Pegù, Myanmar |
| Appointed | Gherardo Cortenovis, B. † | Titular Bishop of Sozopolis in Pisidia | Vicar Apostolic of Ava e Pegù, Myanmar |
| 29 Jan | 43.1 | Appointed | Manuel Obellar, O.P. † | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 43.1 | Appointed | Manuel Obellar, O.P. † | Titular Bishop of Ruspae | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 30 Jan | | Born | Angelo-Andrea Zottoli † | Acerno | Auxiliary Bishop of Salerno (-Acerno), Italy |
| 1 Feb | | Died | Fylyp Felicijan Wołodkowicz (Volodkovyc) † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 3 Feb | | Born | Alessandro Giustiniani † | Genoa, Italy | Cardinal, Official of the Roman Curia - Other |
| 8 Feb | 63.0 | Died | Adam Dwerditsch † | Auxiliary Bishop of Wien, Austria |
| 53.1 | Died | Ermenold Piesport, O.S.B. † | Auxiliary Bishop of Fulda, Germany |
| 9 Feb | 50.5 | Died | Pedro Ángel de Espiñeira, O.F.M. † | Bishop of Concepción, Chile |
| 15 Feb | 23.0 | Ordained Priest | Paolo Bartoli † | Priest | Bishop of Città di Castello, Italy |
| 56.6 | Ordained Bishop | Ferdynand Onufry Kicki † | Titular Bishop of Targa | Archbishop of Lviv, Ukraine |
| 16 Feb | 63.4 | Died | Giuseppe de Rossi † | Archbishop of Brindisi, Italy |
| 22 Feb | | Born | Michele Basilio Clari (Clary), O.S.B.I. † | Roma | Archbishop of Bari (-Canosa), Italy |
| 1 Mar | 53.6 | Appointed | Cayetano Adsor Paredes † | Titular Archbishop of Selymbria | Patriarch of West Indies, Spain |
| 50.0 | Ordained Priest | Alfonso Airoldi † | Priest | Prelate of Santa Lucia del Mela, Italy |
| 73.5 | Died | Anton Ludovico Antinori, C.O. † | Archbishop Emeritus of Acerenza e Matera, Italy |
| 6 Mar | 71.3 | Died | Francisco Pallás y Faro, O.P. † | Vicar Apostolic of Fo-Kien, China |
| 14 Mar | 22.1 | Ordained Deacon | Antón Mákay † | Deacon | Bishop of Veszprém, Hungary |
| 45.3 | Died | Francesco Luserna Rorengo di Rorà † | Archbishop of Torino {Turin}, Italy |
| 19 Mar | 23.5 | Ordained Priest | Silvester Bubanovich † | Priest | Bishop of Križevci (Kreutz) (Križevci), Croatia |
| 21 Mar | 65.6 | Died | Juan Lorenzo Irigoyen Dutari † | Bishop of Pamplona, Spain |
| 25 Mar | 53.7 | Resigned | Jacques-Thomas Astesan, O.P. † | Bishop of Nice, France | Archbishop of Oristano, Italy |
| 57.2 | Died | Francesco Ignazio Guiso † | Bishop of Ampurias e Civita, Italy |
| 26 Mar | | Born | Francesco Xavier Gargiulo † | Napoli | Titular Bishop of Thyatira |
| 28 Mar | 78.2 | Died | Daniel O’Reilly † | Bishop of Clogher, Ireland |
| 39.2 | Succeeded | Hugh O’Reilly † | Bishop of Clogher, Ireland |
| 30 Mar | 33.5 | Appointed | Giuseppe Capecelatro † | Archbishop of Taranto, Italy | Archbishop Emeritus |
| 48.8 | Confirmed | Antonín Theodor Colloredo von Wallsee und Mels † | Cardinal, Archbishop of Olomouc, Czech Republic |
| 63.3 | Appointed | Francisco Javier Delgado Venegas † | Cardinal, Patriarch of West Indies, Spain |
| 48.2 | Appointed | Jan Stefan Giedroyc † | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 56.2 | Installed | Andrea Gioannetti, O.S.B. † | Cardinal-Priest of Santa Pudenziana | Cardinal, Archbishop of Bologna, Italy |
| 41.3 | Confirmed | Louis-André de Grimaldi † | Bishop of Noyon, France | Bishop Emeritus |
| 34.3 | Confirmed | Jean-Baptiste-Marie de Maillé de la Tour-Landry † | Bishop of Gap, France | Bishop of Rennes, France |
| 52.5 | Appointed | Pedro Rubio-Benedicto Herrero † | Bishop of Mallorca, Spain | Bishop of Jaén, Spain |
| 38.3 | Appointed | Louis-Hector-Honoré-Maxime de Sabran † | Bishop of Laon, France |
| 67.4 | Appointed | Anton Maria Martin von Stegner † | Auxiliary Bishop of Wien, Austria |
| 67.4 | Appointed | Anton Maria Martin von Stegner † | Titular Bishop of Corycus | Auxiliary Bishop of Wien, Austria |
| 52.5 | Installed | Luigi Valenti Gonzaga † | Cardinal-Priest of Sant’Agnese fuori le mura | Cardinal, Librarian of the Vatican Library |
| Apr | | Died | Emanuello Rao-Torres † | Prelate of Santa Lucia del Mela, Italy |
| 4 Apr | 24.3 | Ordained Priest | Andrea Lucibello † | Priest | Bishop Emeritus of Aquino, Sora, e Pontecorvo, Italy |
| 5 Apr | 23.9 | Ordained Deacon | Flórián Kovács † | Deacon | Bishop of Satu Mare {Szatmár}, Romania |
| 8 Apr | 38.5 | Ordained Priest | Ioan (Janos) Bob (Babb) † | Priest | Bishop of Făgăraş (Romanian), Romania |
| 10 Apr | | Appointed | John Butler † | Bishop of Limerick, Ireland | Bishop-Elect |
| 12 Apr | 33.5 | Ordained Bishop | Giuseppe Capecelatro † | Archbishop of Taranto, Italy | Archbishop Emeritus |
| 18 Apr | 23.9 | Ordained Priest | Flórián Kovács † | Priest | Bishop of Satu Mare {Szatmár}, Romania |
| 19 Apr | | Born | Attilio Fiascaini † | Prato | Bishop of Arezzo, Italy |
| 57.4 | Ordained Bishop | Sebastián Malvar y Pinto, O.F.M. † | Bishop of Buenos Aires, Argentina | Archbishop of Santiago de Compostela, Spain |
| 20 Apr | | Selected | Youhanan VIII Hormez † | Patriarch of Babylon {Babilonia} (Chaldean), Iraq |
| Born | Manuel Vicuña Larraín † | Santiago | Archbishop of Santiago de Chile |
| 21 Apr | 36.2 | Selected | Charles de La Font de Savines † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 22 Apr | 73.1 | Died | Guglelmo Camaldari † | Archbishop of Rossano, Italy |
| 26 Apr | 27.8 | Ordained Priest | Ernst Maria Ferdinand von Bissingen-Nieppenburg † | Priest of Konstanz {Constance}, Germany | Auxiliary Bishop Emeritus |
| 44.5 | Ordained Bishop | François-Camille de Duranti de Lironcourt † | Titular Bishop of Bethleem |
| 38.4 | Ordained Bishop | Louis-Hector-Honoré-Maxime de Sabran † | Bishop of Laon, France |
| 1 May | 54.3 | Selected | Manuel Tavares Coutinho da Silva † | Bishop of Portalegre, Portugal |
| 3 May | 36.7 | Ordained Deacon | José da Costa e Torres † | Deacon | Archbishop of Braga, Portugal |
| 34.4 | Ordained Bishop | Jean-Baptiste-Marie de Maillé de la Tour-Landry † | Bishop of Gap, France | Bishop of Rennes, France |
| 67.5 | Ordained Bishop | Anton Maria Martin von Stegner † | Titular Bishop of Corycus | Auxiliary Bishop of Wien, Austria |
| 5 May | 63.3 | Died | Scipione Ardoino Alcontres, C.R. † | Archbishop of Messina, Italy |
| 7 May | | Succeeded | Andrew Donnellan † | Bishop of Clonfert, Ireland |
| Died | Peter O’Donnellan † | Bishop of Clonfert, Ireland |
| 9 May | | Born | Antonio Giurico † | Veglia | Bishop of Dubrovnik (Ragusa), Croatia |
| 10 May | 52.6 | Ordained Bishop | Pedro Rubio-Benedicto Herrero † | Bishop of Mallorca, Spain | Bishop of Jaén, Spain |
| 11 May | 77.1 | Died | Armand Bazin de Bezons † | Bishop of Carcassonne, France |
| 17 May | 48.9 | Ordained Bishop | Antonín Theodor Colloredo von Wallsee und Mels † | Cardinal, Archbishop of Olomouc, Czech Republic |
| 72.9 | Resigned | Pietro Di Gennaro † | Bishop of Cava (de’ Tirreni), Italy | Bishop Emeritus |
| 19 May | | Born | José Gómez y Navas, T.O.R. † | Antequera | Bishop of Málaga, Spain |
| 22 May | | Born | Joaquín Abarca Blanque † | Huesca | Bishop of León, Spain |
| 23 May | 69.8 | Died | Heinrich Joseph von Nitschke † | Auxiliary Bishop of Bamberg, Germany |
| 24 May | 64.4 | Died | Govaart-Geeraard van Eersel † | Bishop of Gent {Ghent, Gand}, Belgium |
| 28 May | 67.5 | Died | Anton Maria Martin von Stegner † | Auxiliary Bishop of Wien, Austria |
| 29 May | 52.9 | Died | Diego Genovesi † | Bishop of Squillace, Italy |
| 65.4 | Resigned | Joseph Rolin de Morel de Mons † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 31 May | 50.8 | Ordained Bishop | Jean-Marie Cuchot d’Herbain † | Titular Bishop of Ascalon | Auxiliary Bishop Emeritus of Trier, Germany |
| Jun | 80.6 | Died | Pietro Antonio Zuccari † | Bishop of Krk (Veglia), Croatia |
| 1 Jun | 53.9 | Appointed | Jacques-Thomas Astesan, O.P. † | Archbishop of Oristano, Italy |
| 51.3 | Elevated to Cardinal | József Batthyány † | Cardinal, Archbishop of Esztergom, Hungary |
| 53.8 | Appointed | Lothar Breidbach zu Bürresheim, O.S.B. † | Auxiliary Bishop of Fulda, Germany |
| 53.8 | Appointed | Lothar Breidbach zu Bürresheim, O.S.B. † | Titular Bishop of Ierichus | Auxiliary Bishop of Fulda, Germany |
| 52.1 | Appointed | Giambattista Ettore Caracciolo, C.R. † | Archbishop of Bari (-Canosa), Italy |
| 57.9 | Elevated to Cardinal | Giovanni Cornaro † | Cardinal, Cardinal-Deacon of San Cesareo in Palatio |
| 63.5 | Elevated to Cardinal | Francisco Javier Delgado Venegas † | Cardinal, Patriarch of West Indies, Spain |
| 53.6 | Appointed | Ignatius Dłuski † | Auxiliary Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 53.6 | Appointed | Ignatius Dłuski † | Titular Bishop of Hebron | Auxiliary Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 54.0 | Elevated to Cardinal | Carlo Giuseppe Filippa della Martiniana † | Cardinal, Bishop of Vercelli, Italy |
| 41.8 | Appointed | Cayetano Francos y Monroy † | Archbishop of Guatemala |
| 51.7 | Elevated to Cardinal | Joannes-Henricus von Frankenberg † | Cardinal, Archbishop Emeritus of Mechelen, Belgium |
| 59.8 | Elevated to Cardinal | Tommaso Maria Ghilini † | Cardinal, Cardinal-Priest of Santa Maria sopra Minerva |
| 56.3 | Elevated to Cardinal | Romoaldo Guidi † | Cardinal, Cardinal-Deacon of San Giorgio in Velabro |
| 54.8 | Appointed | François-Gaspard de Jouffroy de Gonssans † | Bishop of Le Mans, France |
| 65.7 | Elevated to Cardinal | Dominique de La Rochefoucauld † | Cardinal, Archbishop of Rouen, France |
| 36.3 | Confirmed | Charles de La Font de Savines † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 41.4 | Appointed | Baltazar Jaime Martínez de Compañón † | Bishop of Trujillo, Peru | Archbishop of Santafé en Nueva Granada, Colombia |
| 71.2 | Appointed | Nicola Molinari, O.F.M. Cap. † | Bishop of Ravello e Scala, Italy | Bishop of Bovino, Italy |
| 48.5 | Appointed | Francesco Polesini † | Bishop of Poreč (Parenzo), Croatia |
| 56.4 | Appointed | Lorenzo Potenza † | Bishop of Ariano, Italy | Bishop of Sarno, Italy |
| 43.7 | Elevated to Cardinal | Louis-René-Edouard de Rohan-Guéménée † | Cardinal, Bishop Emeritus of Strasbourg, France |
| 36.2 | Appointed | Benedetto Solari, O.P. † | Bishop of Noli, Italy |
| 65.5 | Elevated to Cardinal | Fernando de Sousa e Silva † | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 40.9 | Appointed | August Franz von Strauß (Strauss) † | Auxiliary Bishop of Mainz, Germany |
| 40.9 | Appointed | August Franz von Strauß (Strauss) † | Titular Bishop of Samaria | Auxiliary Bishop of Mainz, Germany |
| 65.7 | Appointed | Michele Tafuri † | Bishop of Cava (de’ Tirreni), Italy |
| 7 Jun | 52.1 | Ordained Bishop | Giambattista Ettore Caracciolo, C.R. † | Archbishop of Bari (-Canosa), Italy |
| 71.2 | Ordained Bishop | Nicola Molinari, O.F.M. Cap. † | Bishop of Ravello e Scala, Italy | Bishop of Bovino, Italy |
| 56.4 | Ordained Bishop | Lorenzo Potenza † | Bishop of Ariano, Italy | Bishop of Sarno, Italy |
| 36.2 | Ordained Bishop | Benedetto Solari, O.P. † | Bishop of Noli, Italy |
| 8 Jun | 74.3 | Died | Filippo Mornati † | Bishop of Nepi e Sutri, Italy |
| 23.1 | Ordained Deacon | Samuel Cyryl Stefanowicz † | Deacon of Lviv (Armenian), Ukraine | Archbishop |
| 10 Jun | 44.8 | Appointed | Vittorio Filippo Melano, O.P. † | Archbishop of Cagliari, Italy | Bishop of Novara, Italy |
| 13 Jun | 23.1 | Ordained Priest | Stephanus d’Elia † | Priest | Titular Bishop of Dorylaëum |
| 23.2 | Ordained Priest | Alessandro Maria Pagani † | Priest | Bishop of Lodi, Italy |
| 14 Jun | 78.7 | Died | Michele Maria Capece Galeota, C.R. † | Archbishop of Capua, Italy | Archbishop Emeritus |
| 37.6 | Selected | Jean-Auguste de Chastenet de Puységur † | Bishop of Carcassonne, France | Archbishop Emeritus of Bourges, France |
| 19 Jun | 24.1 | Ordained Priest | Michele Sanseverino † | Priest | Bishop of Gaeta, Italy |
| 21 Jun | 36.9 | Ordained Priest | José da Costa e Torres † | Priest | Archbishop of Braga, Portugal |
| 25 Jun | | Appointed | Gaetano Mantegazza, B. † | Titular Bishop of Maximianopolis in Palaestina |
| 27 Jun | 27.1 | Ordained Priest | Andrés Quintian Ponte de Andrade † | Priest of Concepción, Chile | Bishop of Cuenca, Ecuador |
| 29 Jun | 53.9 | Ordained Bishop | Lothar Breidbach zu Bürresheim, O.S.B. † | Titular Bishop of Ierichus | Auxiliary Bishop of Fulda, Germany |