| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Alessandro Asinari di Sanmarzano † | Torino | Titular Archbishop of Ephesus |
| 48.8 | Ordained Bishop | Rafael de Castello de Vide, O.F.M. † | Bishop of São Tomé e Príncipe |
| Appointed | Edward Dillon † | Bishop of Kilmacduagh, Ireland | Archbishop of Tuam, Ireland |
| 57.6 | Appointed | Franz Egon Freiherr von Fürstenberg † | Vicar Apostolic of Nordic Missions, Germany | Bishop of Hildesheim, Germany |
| Born | Giuseppe Giagia † | Bisciarre | Archbishop of Cipro (Maronite), Cyprus |
| 24.0 | Ordained Priest | Edward Kernan † | Priest | Bishop of Clogher, Ireland |
| 75.0 | Retired | Tommaso Mancini † | Bishop of Città della Pieve, Italy |
| Died | Alfonso Marsili † | Archbishop of Siena, Italy |
| Died | Hugh MacMullan † | Bishop of Down and Connor, Ireland |
| 39.7 | Resigned | Charles Montault des Isles † | Bishop of Foreign Diocese | Bishop of Angers, France |
| 45.8 | Appointed | Franz Xaver Freiherr von Neveu † | Apostolic Administrator of Besançon, France | Bishop of Basel, Switzerland |
| Appointed | Pietro Ramazzini † | Vicar Apostolic of Bombay, India | Titular Bishop of Antiphellus |
| Appointed | Pietro Ramazzini † | Titular Bishop of Antiphellus |
| 68.0 | Appointed | Manuel Nicolás Rojas de Argandoña † | Bishop of Santa Cruz de la Sierra, Bolivia |
| Born | Józef Maksymilian Staniewski † | | Auxiliary Bishop of Mohilev, Belarus |
| 69.2 | Appointed | Luigi Valenti Gonzaga † | Cardinal-Bishop of Albano | Cardinal, Librarian of the Vatican Library |
| 1 Jan | 23.4 | Ordained Priest | Ignacy Giedroyc † | Priest | Coadjutor Bishop of Samogizia o Tels (Zmudz), Lithuania |
| 5 Jan | 54.2 | Succeeded | Joseph Christian Franz de Paula Prinz zu Hohenlohe-Waldenburg-Bartenstein † | Bishop of Wrocław, Poland |
| 78.5 | Died | Philipp Gotthard Graf von Schaffgotsch † | Bishop of Wrocław, Poland |
| 7 Jan | 62.7 | Died | Alfonso Marcos Llanes † | Archbishop of Sevilla {Seville}, Spain |
| 22 Jan | 55.7 | Resigned | Miguel da Madre de Deus da Cruz, O.F.M. † | Bishop of São Paulo, Brazil | Archbishop of Braga, Portugal |
| 25 Jan | 52.4 | Ordained Bishop | José Joaquim da Cunha Azeredo Coutinho † | Bishop of Olinda, Brazil | Bishop of Elvas, Portugal |
| 31 Jan | | Born | Gabriele Ferretti † | Ancona | Cardinal, Secretary Emeritus of the Secretariat of State |
| 1 Feb | | Born | Patrick Phelan, P.S.S. † | Ballyragget, Ireland | Bishop of Kingston, Ontario, Canada |
| 14 Feb | 64.4 | Died | Franz Ludwig Reichsfreiherr von Erthal † | Bishop of Würzburg, Germany |
| 15 Feb | 62.4 | Ordained Bishop | Pedro Nolasco Mora Mora, O. de M. † | Bishop of Solsona, Spain |
| 20 Feb | 65.5 | Died | Esteban Antonio Aguado Rojas † | Bishop of Pamplona, Spain |
| 22 Feb | 67.9 | Appointed | Francisco Gabriel de Olivares y Benito † | Bishop of Durango, Durango, México |
| 27 Feb | 64.3 | Appointed | Leonardo Antonelli † | Prefect of the Apostolic Signatura | Cardinal, Cardinal-Bishop of Ostia |
| 76.7 | Appointed | Hyacinthe-Sigismond Gerdil, B. † | Prefect of the Congregation for Propagation of the Faith | Cardinal, Cardinal-Priest of S. Cecilia |
| 12 Mar | 46.1 | Appointed | Georg Karl Ignaz Freiherr von Fechenbach zu Laudenbach † | Bishop of Würzburg, Germany |
| 16 Mar | 65.4 | Installed | Francisco José Marán † | Bishop of Santiago de Chile |
| 17 Mar | | Born | Wincenty Lipski † | Lozowica k. Klimowicz | Auxiliary Bishop of Tiraspol, Moldova |
| 24 Mar | | Born | Josef von Lipp † | Holzhausen | Bishop of Rottenburg, Germany |
| 25 Mar | 25.1 | Ordained Priest | Andrew Carruthers † | Priest | Vicar Apostolic of Eastern District, Scotland, Great Britain |
| 23.1 | Ordained Priest | Andrew Scott † | Priest | Vicar Apostolic Emeritus of Western District, Scotland, Great Britain |
| 38.6 | Ordained Priest | Johann Friedrich Graf von Waldenstein-Wartenberg † | Priest of Salzburg, Austria | Bishop of Seckau, Austria |
| 2 Apr | | Born | Francisco de Paul García Peláez † | Guatemala | Archbishop of Guatemala |
| 3 Apr | | Born | James Oliver Van de Velde, S.J. † | Lebbeke, Belgium | Bishop of Natchez, Mississippi, USA |
| 7 Apr | | Born | Ignaz Feigerle † | Biskupstwo (Mähren) | Bishop of Sankt Pölten, Austria |
| 12 Apr | | Born | Adalbert Lidmansky † | Neuhaus, Czech Republic | Bishop of Gurk, Austria |
| 13 Apr | 60.2 | Appointed | Ignacy Błażej Franciszek Krasicki † | Archbishop of Gniezno, Poland |
| 17 Apr | 48.5 | Appointed | Leonard Neale, S.J. † | Coadjutor Bishop of Baltimore, Maryland, USA | Archbishop of Baltimore, Maryland, USA |
| 48.5 | Appointed | Leonard Neale, S.J. † | Titular Bishop of Gortyna | Archbishop of Baltimore, Maryland, USA |
| 19 Apr | 43.0 | Ordained Bishop | Juan Cruz Ruiz de Cabañas y Crespo † | Bishop of León en Nicaragua | Bishop of Guadalajara, Jalisco, México |
| 20 Apr | | Born | Johannes Nepomuk von der Marwitz † | Tucheln | Bishop of Chelmno (Culma), Poland |
| 24 Apr | 47.3 | Succeeded | Charles Berington † | Vicar Apostolic of Midland District, England, Great Britain |
| 68.2 | Died | Thomas Joseph Talbot † | Vicar Apostolic of Midland District, England, Great Britain |
| 26 Apr | 46.1 | Ordained Bishop | Luis Ignatius Peñalver y Cárdenas † | Bishop of Louisiana and the Two Floridas (Saint Louis of New Orleans), USA | Archbishop Emeritus of Guatemala |
| 28 Apr | | Born | Peter-Josef de Preux † | Venthen | Bishop of Sion {Sitten}, Switzerland |
| 8 May | 57.1 | Died | Joachim François Mamert de Conzié † | Archbishop of Tours, France |
| 15 May | | Born | Sigismondo Deaky † | | Auxiliary Bishop of Győr, Hungary |
| 63.2 | Appointed | Wenzel Kobaltz † | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 20 May | | Born | Mellon de Jolly † | Sézanne | Archbishop Emeritus of Sens (-Auxerre), France |
| Born | Francis Murphy † | Navan, Ireland | Bishop of Adelaide, Australia |
| 27 May | 69.7 | Died | Pedro Rubio-Benedicto Herrero † | Bishop of Jaén, Spain |
| 28 May | 48.1 | Resigned | Francisco de Cuerda † | Bishop of Puerto Rico (Porto Rico) | Bishop Emeritus |
| 75.8 | Retired | Francisco Fabián y Fuero † | Archbishop of Valencia, Spain | Archbishop Emeritus |
| Jun | 69.4 | Died | Laurence Nihill, S.J. † | Bishop of Kilmacduagh, Ireland |
| 1 Jun | 63.7 | Appointed | Giovanni Andrea Archetti † | Archbishop (Personal Title) of Ascoli Piceno, Italy | Cardinal, Bishop |
| 66.5 | Appointed | Francisco Javier Cabrera Velasco † | Bishop of Orihuela, Spain | Bishop of Avila, Spain |
| 45.5 | Appointed | Václav (Wenzel) Léopold Ritter von Chlumčansky † | Auxiliary Bishop of Praha {Prague}, Czech Republic | Archbishop |
| 45.5 | Appointed | Václav (Wenzel) Léopold Ritter von Chlumčansky † | Titular Bishop of Cydonia | Archbishop of Praha {Prague}, Czech Republic |
| 52.8 | Appointed | Mateus de Abreu Pereira † | Bishop of São Paulo, Brazil |
| 50.8 | Appointed | Giulio Maria della Somaglia † | Cardinal-Priest of S. Sabina | Cardinal, Archivist of the Vatican Secret Archives |
| 50.8 | Elevated to Cardinal | Giulio Maria della Somaglia † | Cardinal, Archivist of the Vatican Secret Archives |
| 50.2 | Confirmed | Antonio Despuig y Dameto † | Archbishop of Valencia, Spain | Cardinal, Archbishop Emeritus of Sevilla {Seville}, Spain |
| 24.9 | Appointed | Kaspar Max Freiherr Droste zu Vischering † | Auxiliary Bishop of Münster, Germany | Bishop |
| 24.9 | Appointed | Kaspar Max Freiherr Droste zu Vischering † | Titular Bishop of Ierichus | Bishop of Münster, Germany |
| 46.3 | Confirmed | Georg Karl Ignaz Freiherr von Fechenbach zu Laudenbach † | Bishop of Würzburg, Germany |
| 44.9 | Appointed | Joaquim Ferreira de Carvalho † | Bishop of São Luís do Maranhão, Brazil |
| 51.1 | Appointed | Bonaventura Gazola, O.F.M. † | Bishop of Cervia, Italy | Cardinal, Bishop of Montefiascone, Italy |
| 30.5 | Appointed | Karl Klemens Reichsfreiherr von Gruben † | Auxiliary Bishop of Osnabrück, Germany | Bishop of Hildesheim, Germany |
| 30.5 | Appointed | Karl Klemens Reichsfreiherr von Gruben † | Titular Bishop of Paros | Bishop of Hildesheim, Germany |
| 40.3 | Confirmed | Ferdinand Hermann Maria Freiherr von Lüninck † | Bishop of Corvey, Germany | Bishop of Münster, Germany |
| 47.6 | Appointed | Rafael Múzquiz Aldunate † | Archbishop of the unknown of Titular See | Archbishop of Santiago de Compostela, Spain |
| 53.9 | Appointed | Vicente Navas, O.P. † | Bishop of Comayagua, Honduras |
| 58.7 | Appointed | Franz Freiherr von Raigesfeld, S.J. † | Auxiliary Bishop of Ljubljana, Slovenia |
| 58.7 | Appointed | Franz Freiherr von Raigesfeld, S.J. † | Titular Bishop of Derbe | Auxiliary Bishop of Ljubljana, Slovenia |
| 58.7 | Appointed | Juan Bautista de Zengotita y Bengoa, O. de M. † | Bishop of Puerto Rico (Porto Rico) |
| 55.4 | Appointed | Antonio Felice Zondadari † | Cardinal, Archbishop of Siena, Italy |
| 5 Jun | | Born | Anton Ocskay † | Boliarov | Bishop of Košice, Slovakia |
| 7 Jun | 51.1 | Ordained Bishop | Bonaventura Gazola, O.F.M. † | Bishop of Cervia, Italy | Cardinal, Bishop of Montefiascone, Italy |
| 16 Jun | 73.5 | Died | Domingos da Encarnação Pontevel, O.P. † | Bishop of Mariana, Brazil |
| 17 Jun | 46.2 | Installed | Luis Ignatius Peñalver y Cárdenas † | Bishop of Louisiana and the Two Floridas (Saint Louis of New Orleans), USA | Archbishop Emeritus of Guatemala |
| 21 Jun | 46.3 | Ordained Bishop | Georg Karl Ignaz Freiherr von Fechenbach zu Laudenbach † | Bishop of Würzburg, Germany |
| 25 Jun | | Born | Giovanni Brunelli † | Rome | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 26 Jun | 51.0 | Appointed | Vinzenz Joseph Franz Sales Graf von Schrattenbach † | Bishop of Lavant, Slovenia | Bishop of Brno, Czech Republic |
| 29 Jun | 51.9 | Ordained Bishop | Pierre Denaut † | Titular Bishop of Canatha | Bishop of Québec, Québec, Canada |
| 30 Jun | 50.3 | Installed | Antonio Despuig y Dameto † | Archbishop of Valencia, Spain | Cardinal, Archbishop Emeritus of Sevilla {Seville}, Spain |
| 1 Jul | 61.6 | Appointed | Félix Rico Rico † | Bishop of Teruel, Spain |
| 34.1 | Confirmed | Maria-Thaddeus von Trauttmansdorf Wiensberg † | Bishop of Hradec Králové, Czech Republic | Cardinal, Archbishop of Olomouc, Czech Republic |
| 2 Jul | | Born | Pierre Chatrousse † | Voiron | Bishop of Valence, France |
| 10 Jul | 59.9 | Died | Bartolomé Fabro Palacios † | Bishop of Ayacucho o Huamanga, Peru |
| 15 Jul | 77.2 | Died | Felipe Pérez Santa María † | Auxiliary Bishop of Toledo, Spain |
| 16 Jul | 63.0 | Appointed | Johann Karl Reichsgraf von Hohenzollern-Hechingen † | Bishop of Warmia, Poland |
| 26 Jul | 47.8 | Ordained Bishop | Rafael Múzquiz Aldunate † | Archbishop of the unknown of Titular See | Archbishop of Santiago de Compostela, Spain |
| 51.1 | Installed | Vinzenz Joseph Franz Sales Graf von Schrattenbach † | Bishop of Lavant, Slovenia | Bishop of Brno, Czech Republic |
| 31 Jul | | Born | Giacomo Piccolomini † | Siena | Cardinal, Priest of the Roman Curia - Other |
| 2 Aug | 66.6 | Ordained Bishop | Francisco Javier Cabrera Velasco † | Bishop of Orihuela, Spain | Bishop of Avila, Spain |
| 6 Aug | 40.5 | Ordained Priest | Ferdinand Hermann Maria Freiherr von Lüninck † | Priest of Corvey, Germany | Bishop of Münster, Germany |
| 12 Aug | | Born | Pierre-Louis Parisis † | Orléans | Bishop of Arras (, Boulogne, e Saint-Omer), France |
| 16 Aug | 70.6 | Ordained Bishop | Christoph Franz Freiherr von Buseck † | Bishop of Bamberg, Germany |
| 18 Aug | 48.5 | Appointed | Giovanni Filippo Gallarati Scotti † | Apostolic Nuncio to Other | Cardinal, Prefect Emeritus of the Prefecture of the Papal Household |
| 21 Aug | 61.6 | Died | Joseph Franz Anton Reichsgraf von Auersperg † | Cardinal, Bishop of Passau, Germany |
| 27 Aug | 54.8 | Installed | Joseph Christian Franz de Paula Prinz zu Hohenlohe-Waldenburg-Bartenstein † | Bishop of Wrocław, Poland |
| 28 Aug | | Born | Joannes Augustinus Paredis † | België | Bishop of Roermond, Netherlands |
| 29 Aug | | Born | Marie-Auguste Fabre-des-Essarts † | Aouste-Sur-Sye | Bishop of Blois, France |
| 30 Aug | 28.7 | Ordained Priest | Jakob Frint † | Priest of Wien {Vienna}, Austria | Bishop of Sankt Pölten, Austria |
| 3 Sep | | Born | Francis Xavier Norbert Blanchet † | St-Pierre, Canada | Archbishop Emeritus of Oregon City, Oregon, USA |
| 6 Sep | 25.2 | Ordained Bishop | Kaspar Max Freiherr Droste zu Vischering † | Titular Bishop of Ierichus | Bishop of Münster, Germany |
| 30.8 | Ordained Bishop | Karl Klemens Reichsfreiherr von Gruben † | Titular Bishop of Paros | Bishop of Hildesheim, Germany |
| 40.6 | Ordained Bishop | Ferdinand Hermann Maria Freiherr von Lüninck † | Bishop of Corvey, Germany | Bishop of Münster, Germany |
| 7 Sep | | Born | Michael Portier † | Montbrison, France | Bishop of Mobile, Alabama, USA |
| 8 Sep | | Born | Louis-Marie-Edmont Blanquart de Bailleul † | Calais | Archbishop Emeritus of Rouen, France |
| 34.3 | Ordained Bishop | Maria-Thaddeus von Trauttmansdorf Wiensberg † | Bishop of Hradec Králové, Czech Republic | Cardinal, Archbishop of Olomouc, Czech Republic |
| 13 Sep | 53.1 | Ordained Bishop | Mateus de Abreu Pereira † | Bishop of São Paulo, Brazil |
| 45.2 | Ordained Bishop | Joaquim Ferreira de Carvalho † | Bishop of São Luís do Maranhão, Brazil |
| 61.8 | Ordained Bishop | Félix Rico Rico † | Bishop of Teruel, Spain |
| 14 Sep | 71.8 | Died | Berndard-Emmanuel (François-Pierre) de Lenzbourg, O. Cist. † | Bishop of Lausanne, Switzerland |
| 15 Sep | | Born | Charles-Frédéric Rousselet † | Saint-Amand-Montrond | Bishop of Sées, France |
| 20 Sep | 33.8 | Ordained Bishop | St. Ignacio Clemente Delgado Cebrián, O.P. † | Titular Bishop of Milopotamus | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 70.7 | Installed | Blas Manuel Sobrino y Minayo † | Bishop of Trujillo, Peru |
| 22 Sep | 60.9 | Appointed | Miguel Alvarez Cortez † | Bishop of Quito, Ecuador |
| 59.1 | Appointed | Carlo Bellisomi † | Archbishop (Personal Title) of Cesena, Italy | Cardinal, Bishop |
| 49.1 | Appointed | Lorenzo Igual Soria † | Bishop of Pamplona, Spain | Bishop of Plasencia, Spain |
| 25 Sep | 74.8 | Died | Sebastián Malvar y Pinto, O.F.M. † | Archbishop of Santiago de Compostela, Spain |
| 28 Sep | 45.9 | Ordained Bishop | Václav (Wenzel) Léopold Ritter von Chlumčansky † | Titular Bishop of Cydonia | Archbishop of Praha {Prague}, Czech Republic |
| 4 Oct | | Born | John Joseph Mary Benedict Chanche, P.S.S. † | Baltimore, MD | Bishop of Natchez, Mississippi, USA |
| 8 Oct | 59.0 | Ordained Bishop | Franz Freiherr von Raigesfeld, S.J. † | Titular Bishop of Derbe | Auxiliary Bishop of Ljubljana, Slovenia |
| 10 Oct | 61.2 | Appointed | Franciszek Ksawery Graf Rydzyński † | Bishop of Chelmno (Culma), Poland |
| 15 Oct | | Born | Prospero Caterini † | Onano | Cardinal, Prefect of the Congregation of the Council |
| 18 Oct | 57.4 | Ordained Bishop | Tomás de Roa y Alarcón † | Bishop of Concepción, Chile |
| 24 Oct | | Born | Giuseppe Bofondi † | Forli | Cardinal, Cardinal-Deacon of S. Cesareo in Palatio |
| 29 Oct | | Born | Juan José Arbolí Acaso † | Cádiz | Bishop of Cádiz, Spain |
| 1 Nov | | Born | Pedro Barajas y Moreno † | Lagos | Bishop of San Luis Potosí, San Luís Potosí, México |
| 4 Nov | 25.2 | Ordained Priest | Joseph Bernet † | Priest | Cardinal, Archbishop of Aix (-Arles-Embrun), France |
| 58.5 | Appointed | Thomas Johann Kaspar Reichsgraf von Thun und Hohenstein † | Bishop of Passau, Germany |
| 8 Nov | 49.2 | Ordained Bishop | Lorenzo Igual Soria † | Bishop of Pamplona, Spain | Bishop of Plasencia, Spain |
| 59.2 | Ordained Bishop | Juan Bautista de Zengotita y Bengoa, O. de M. † | Bishop of Puerto Rico (Porto Rico) |
| 15 Nov | 54.3 | Ordained Bishop | Vicente Navas, O.P. † | Bishop of Comayagua, Honduras |
| Ordained Bishop | Pietro Ramazzini † | Titular Bishop of Antiphellus |
| 16 Nov | | Born | François-Auguste-Ferdinand Donnet † | Bourg-Argental | Cardinal, Archbishop of Bordeaux, France |
| 22 Nov | 71.9 | Died | Luis Tomás Esteban de Piña y Mazo, O.S.B. † | Bishop of Yucatán (Mérida), Yucatán, México |
| 4 Dec | 83.1 | Died | Paolo Francesco Antamori † | Cardinal, Bishop of Orvieto, Italy |
| 8 Dec | 57.2 | Died | José Boltas, O.F.M. † | Bishop of Urgell, Spain |
| 18 Dec | 59.4 | Installed | Carlo Bellisomi † | Cardinal-Priest of S. Maria della Pace | Cardinal, Bishop of Cesena, Italy |
| 64.3 | Appointed | Ignazio Busca † | Cardinal-Priest of S. Maria degli Angeli | Cardinal, Chamberlain (Camerlengo) of the College of Cardinals |
| 46.0 | Appointed | Francisco Javier de Lizana y Beaumont † | Auxiliary Bishop of Toledo, Spain | Archbishop of México, Federal District |
| 46.0 | Appointed | Francisco Javier de Lizana y Beaumont † | Titular Bishop of Thaumacus | Archbishop of México, Federal District |
| 50.7 | Appointed | Antonio Despuig y Dameto † | Archbishop of Sevilla {Seville}, Spain | Cardinal, Archbishop Emeritus |
| 60.3 | Appointed | Antonio Ramón de Espinosa y Lorenzo, O.P. † | Bishop of Mérida, Venezuela |
| 46.4 | Appointed | Fermín José Fuero y Gómez Martinez Arañon † | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| 63.4 | Confirmed | Johann Karl Reichsgraf von Hohenzollern-Hechingen † | Bishop of Warmia, Poland |
| 59.6 | Appointed | Juan Francisco Jiménez del Río † | Archbishop of Valencia, Spain |
| 60.9 | Confirmed | Ignacy Błażej Franciszek Krasicki † | Archbishop of Gniezno, Poland |
| 55.8 | Appointed | J. Damián Martínez de Galinsonga, O.F.M. † | Bishop of Tarazona, Spain |
| 61.6 | Appointed | Diego Melo Portugal, O.S.A. † | Bishop of Jaén, Spain |
| 43.6 | Appointed | Juan Cruz Ruiz de Cabañas y Crespo † | Bishop of Guadalajara, Jalisco, México |
| 61.4 | Confirmed | Franciszek Ksawery Graf Rydzyński † | Bishop of Chelmno (Culma), Poland |
| 58.6 | Confirmed | Thomas Johann Kaspar Reichsgraf von Thun und Hohenstein † | Bishop of Passau, Germany |
| 23 Dec | 59.0 | Appointed | James Louis O'Donel, O.F.M. † | Vicar Apostolic of Newfoundland, Canada | Vicar Apostolic Emeritus |
| 28 Dec | | Born | François-Nicholas-Madeleine Morlot † | Langres | Cardinal, Archbishop of Paris, France |