| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 85.0 | Died | Girolamo Maria Allegri † | Bishop Emeritus of Cagli, Italy |
| 40.4 | Died | Tomas Luiz da Conceição, O.A.D. † | Bishop of São Tomé e Príncipe |
| Died | Oronzo Filomarini † | Bishop Emeritus of Gallipoli, Italy |
| 52.6 | Appointed | Simon-Pierre de Lacoré (La Corée) † | Bishop of Saintes, France |
| 70.2 | Died | Antonio Monroy Meneses, O. de M. † | Bishop Emeritus of Santa Marta, Colombia |
| Born | James Murphy † | Drumshevra | Bishop of Clogher, Ireland |
| Died | Alessandro Puoti † | Bishop of Marsico Nuovo, Italy |
| 48.0 | Appointed | Giuseppe Ruffo † | Archbishop of Capua, Italy |
| 41.0 | Appointed | Hervé-Nicolas Thépault de Brignou † | Bishop of Saint-Brieuc, France |
| Appointed | Diego Andrea Tomacelli † | Bishop of Marsico Nuovo, Italy |
| 57.9 | Died | Andrés Vergara Uribe † | Bishop of Santa Cruz de la Sierra, Bolivia |
| Died | Alessandro Zondadari † | Archbishop of Siena, Italy |
| 1 Jan | 37.8 | Ordained Priest | Franz Christoph Reichsfreiherr von Hutten zu Stolzenfels † | Priest of Speyer, Germany | Cardinal, Bishop |
| 6 Jan | | Born | François de Gain de Montaignac † | Limousin | Bishop Emeritus of Tarbes, France |
| 8 Jan | 42.3 | Appointed | Enrique Enríquez † | Apostolic Nuncio to Spain | Cardinal, Official of the Secretariat of State |
| 11 Jan | 81.0 | Died | Ennemond-Flodoard Moret de Bourchenu † | Bishop Emeritus of Vence, France |
| 13 Jan | | Born | Louis-Apolinaire de La Tour du Pin-Montauban † | Paris | Bishop of Troyes, France |
| 16 Jan | 65.0 | Died | Ramón Marimón Corbera † | Bishop of Vic, Spain |
| 18 Jan | | Born | Pedro Antonio Juano † | Villar del Río | Bishop of Menorca, Spain |
| 22 Jan | 43.9 | Appointed | Filippo Acciajuoli † | Apostolic Nuncio to Switzerland | Cardinal, Bishop of Ancona e Numana, Italy |
| 40.0 | Appointed | Joseph Wilhelm Rinck von Balderstein † | Bishop of Basel, Switzerland |
| 23 Jan | 40.4 | Appointed | Johann Theodor Herzog von Bayern † | Bishop of Liège, Belgium | Cardinal, Bishop of Regensburg, Germany |
| 3 Feb | 37.9 | Confirmed | Franz Christoph Reichsfreiherr von Hutten zu Stolzenfels † | Cardinal, Bishop of Speyer, Germany |
| 53.6 | Appointed | Pedro José Manuel (Pedro de la Trinidad) Martínez de Arizala, O.F.M. † | Archbishop of Manila, Philippines |
| 59.6 | Confirmed | Kasimir Anton Reichsfreiherr von Sickingen † | Bishop of Konstanz {Constance}, Germany |
| 7 Feb | 67.5 | Died | Diego Fermín de Vergara, O.S.A. † | Archbishop of Santafé en Nueva Granada, Colombia |
| 8 Feb | | Born | Karl Theodor Freiherr von Dalberg † | Mannheim | Bishop of Worms, Germany |
| 11 Feb | 40.4 | Confirmed | Johann Theodor Herzog von Bayern † | Bishop of Liège, Belgium | Cardinal, Bishop of Regensburg, Germany |
| 15 Feb | 23.0 | Ordained Priest | Johann Moritz Freiherr von Strachwitz † | Priest of Wrocław, Poland | Apostolic Administrator |
| 17 Feb | 46.1 | Ordained Bishop | Charles-François-Alexandre Cardevac de Gouy d'Havrincourt † | Bishop of Perpignan-Elne, France |
| 40.1 | Ordained Bishop | Pierre-François-Xavier de Reboul de Lambert † | Bishop of Saint-Paul-Trois-Châteaux, France |
| 19 Feb | | Born | Francesco Maria Pignatelli, Jr. † | Rosarno | Cardinal, Cardinal-Priest of S. Maria in Trastevere |
| 20 Feb | | Born | Alessandro Mattei † | Rome | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 21 Feb | | Born | Joseph-Jacques Loison † | Montaubé | Bishop of Bayonne, France |
| 23 Feb | | Born | Miguel Joaquín Matías Suárez, O.F.M. Cap. † | Santander | Auxiliary Bishop of Zaragoza, Spain |
| 25 Feb | 60.8 | Died | Diego Felipe Perea Magdaleno † | Archbishop of Burgos, Spain |
| 3 Mar | 65.2 | Died | Manuel Samaniego Jaca † | Archbishop Emeritus of Burgos, Spain |
| 6 Mar | | Born | Francisco José de Souza Lima † | Mattosinhos | Auxiliary Bishop of Braga, Portugal |
| 8 Mar | | Born | François de Fontanges † | Gannat | Bishop of Autun, France |
| Born | Joseph Hieronymus Karl Freiherr von Kolborn † | Niederwalluf | Auxiliary Bishop of Regensburg, Germany |
| 41.9 | Ordained Bishop | Antonio Sánchez Sardinero † | Bishop of Huesca, Spain |
| 59.7 | Ordained Priest | Kasimir Anton Reichsfreiherr von Sickingen † | Priest of Konstanz {Constance}, Germany | Bishop |
| 16 Mar | 35.3 | Installed | Giorgio Doria † | Cardinal-Priest of S. Lorenzo in Panisperna | Cardinal, Titular Archbishop of Chalcedon |
| 21 Mar | | Born | Francesco Milesi † | Venezia | Patriarch of Venezia {Venice}, Italy |
| 24 Mar | | Born | Nicola Riganti † | Molfetta | Cardinal, Bishop of Ancona e Numana, Italy |
| 26 Mar | 60.2 | Ordained Bishop | Claude Bouhier † | Bishop of Dijon, France |
| Apr | 66.0 | Died | Francisco Salgado Quirago † | Bishop of Guadix, Spain |
| 1 Apr | | Born | Vicente Alexandre de Tovar † | Bahia | Prelate of Goiás, Brazil |
| 11 Apr | | Born | Simón López García, C.O. † | Nerpio, Spain | Archbishop of Valencia, Spain |
| 12 Apr | 39.3 | Died | Johann Kaspar Reichsgraf von Wolkenstein-Rodeneck † | Auxiliary Bishop of Trento, Italy |
| 13 Apr | 40.2 | Confirmed | Joseph Wilhelm Rinck von Balderstein † | Bishop of Basel, Switzerland |
| 20 Apr | | Born | Michelangelo Luchi, O.S.B. † | Brescia | Cardinal, Priest of the Roman Curia - Other |
| 21 Apr | | Born | Bonaventura Gazola, O.F.M. † | Piazcenza | Cardinal, Bishop of Montefiascone, Italy |
| 22 Apr | 41.3 | Ordained Bishop | Louis-Jacques d'Audibert de Lussan † | Archbishop of Bordeaux, France |
| 23 Apr | 49.4 | Died | Melchiorre Delfico † | Bishop of Muro Lucano, Italy |
| 26 Apr | 46.8 | Died | Francisco Pablo Matos Coronado † | Bishop of Michoacán, Michoacán, México |
| 4 May | 65.3 | Died | Joseph Oswald Reichsgraf von Attems † | Bishop of Lavant, Slovenia |
| 5 May | | Born | Józef Miaskowski † | Smogozewo | Bishop of Warszawa, Poland |
| 16 May | | Appointed | Manuel del Rio Flores, O.P. † | Bishop of Nueva Segovia, Philippines | Bishop-Elect |
| 17 May | 38.2 | Ordained Bishop | Franz Christoph Reichsfreiherr von Hutten zu Stolzenfels † | Cardinal, Bishop of Speyer, Germany |
| Born | Juan Antonio Tamayo, O.S. † | Moratalla, Spain | Titular Bishop of Botrys |
| 19 May | | Born | Irénée-Yves Desolle (Dessole) † | Auch | Archbishop Emeritus of Chambéry, France |
| 23 May | 56.4 | Died | Charles de Bannes d'Avéjan † | Bishop of Alès (Alais), France |
| 26 May | 30.3 | Appointed | Vigilius Augustin Maria Graf von Firmian † | Bishop of Lavant, Slovenia | Bishop Emeritus |
| 31 May | 23.6 | Ordained Priest | Martin Nugk von Lichtenhoff † | Priest of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany | Prefect |
| 15 Jun | 74.3 | Resigned | Giovanni Maria Benzoni † | Bishop of Chioggia, Italy | Bishop Emeritus |
| Appointed | Paolo Francesco Giustiniani † | Bishop of Chioggia, Italy | Bishop Emeritus of Treviso, Italy |
| 51.0 | Appointed | Vito Moio † | Bishop of Muro Lucano, Italy |
| 18 Jun | | Born | Vinzenz Joseph Franz Sales Graf von Schrattenbach † | Brno | Bishop of Brno, Czech Republic |
| 21 Jun | 51.0 | Ordained Bishop | Vito Moio † | Bishop of Muro Lucano, Italy |
| 24 Jun | 74.6 | Died | Bogusław Korwin Gosiewski † | Bishop of Smoleńsk, Poland |
| 9 Jul | | Born | Andrzej Choloniewski † | Tartaków | Auxiliary Bishop of Vilnius, Lithuania |
| 13 Jul | 57.1 | Appointed | José Cepeda † | Bishop of Mallorca, Spain |
| 44.5 | Appointed | Manuel Muñoz Guil † | Bishop of Vic, Spain |
| 26 Jul | 54.6 | Ordained Bishop | Protacio Cabezas † | Bishop of Cebu, Philippines |
| Born | Benedetto Naro † | Rome | Cardinal, Prefect of the Roman Curia - Other |
| 28 Jul | | Born | Henri-Benoit-Jules de Béthizy † | Picardie | Bishop of Uzés, France |
| 29 Jul | | Born | Giulio Maria della Somaglia † | Piacenza | Cardinal, Archivist of the Vatican Secret Archives |
| Born | Ignacy Houwalt † | Balbierzyszki | Auxiliary Bishop-Elect of Vilnius, Lithuania |
| 9 Aug | 49.6 | Died | Mateo de Zamora y Penagos, O.F.M. † | Bishop of Yucatán (Mérida), Yucatán, México |
| 30 Aug | 65.6 | Died | Gaspar de Molina y Oviedo, O.S.A. † | Cardinal, Bishop of Málaga, Spain |
| 60.2 | Ordained Bishop | Kasimir Anton Reichsfreiherr von Sickingen † | Bishop of Konstanz {Constance}, Germany |
| 3 Sep | 30.5 | Ordained Bishop | Vigilius Augustin Maria Graf von Firmian † | Bishop of Lavant, Slovenia | Bishop Emeritus |
| 6 Sep | 82.7 | Died | Louis-Charles Des Alris du Rousset † | Bishop of Béziers, France |
| 7 Sep | 48.5 | Appointed | Anton Felix Ciurletti † | Auxiliary Bishop of Salzburg, Austria |
| 48.5 | Appointed | Anton Felix Ciurletti † | Titular Bishop of Teos | Auxiliary Bishop of Salzburg, Austria |
| 9 Sep | | Born | Manuel Cayetano Muñoz Benavente † | Santa Cruz de los Cáñamos | Auxiliary Bishop Emeritus of Sevilla {Seville}, Spain |
| 13 Sep | | Born | Angelo Vincenzo Andrea Maria Dania, O.P. † | Voltri | Bishop of Albenga, Italy |
| 57.7 | Appointed | Louis-François de Vivet de Montclus † | Bishop of Alès (Alais), France |
| 16 Sep | | Born | Fabrizio Dionigi Ruffo † | San Lucido | Cardinal, Chamberlain Emeritus of the College of Cardinals |
| 19 Sep | 23.7 | Ordained Priest | Luis da Anunciação Azevedo, O.P. † | Priest of Order of Friars Preachers | Bishop Emeritus of Angola e Congo, Angola |
| 28 Sep | 68.4 | Appointed | Diego Felipe Gómez de Angulo † | Bishop of Antequera, Oaxaca, México |
| 46.3 | Appointed | Juan Antonio Oruña † | Bishop of Osma, Spain |
| 51.5 | Appointed | Bartolomeo Antonio Passi † | Auxiliary Bishop of Trento, Italy |
| 51.5 | Appointed | Bartolomeo Antonio Passi † | Titular Bishop of Pella | Auxiliary Bishop of Trento, Italy |
| 4 Oct | | Born | Michal Franciszek Karpowicz, C.M. † | Kamieniec | Bishop of Wigry, Poland |
| 8 Oct | | Born | Marc-Marie de Bombelles † | Bitche | Bishop of Amiens, France |
| 10 Oct | 84.8 | Died | Léon de Beaumont † | Bishop of Saintes, France |
| 11 Oct | 57.3 | Ordained Bishop | José Cepeda † | Bishop of Mallorca, Spain |
| 48.6 | Ordained Bishop | Anton Felix Ciurletti † | Titular Bishop of Teos | Auxiliary Bishop of Salzburg, Austria |
| 44.8 | Ordained Bishop | Manuel Muñoz Guil † | Bishop of Vic, Spain |
| 48.8 | Ordained Bishop | Ignacio Padilla Estrada (Guardiola), O.S.A. † | Archbishop of Santo Domingo, Dominican Republic | Bishop of Yucatán (Mérida), Yucatán, México |
| 12 Oct | 74.3 | Died | Peter Cornelius Beyweg † | Auxiliary Bishop of Speyer, Germany |
| 13 Oct | | Born | Pierre-Louis de La Rochefoucauld-Bayers † | Maumont | Bishop of Saintes, France |
| 14 Oct | 16.7 | Professed | Josef Winterl, S.J. † | Member of Society of Jesus | Auxiliary Bishop of Győr, Hungary |
| 15 Oct | 79.8 | Died | Jean-Jacques Bouhier de Lantenay † | Bishop Emeritus of Dijon, France |
| 19 Oct | | Born | Jean-Baptiste Duvoisin † | Langres | Bishop of Nantes, France |
| 20 Oct | | Born | Jean-François de Mandolx † | Marseille | Bishop of Amiens, France |
| 22 Oct | 65.4 | Died | Leopold Anton Eleutherius Reichsfreiherr von Firmian † | Archbishop of Salzburg, Austria |
| 25 Oct | 51.6 | Ordained Bishop | Bartolomeo Antonio Passi † | Titular Bishop of Pella | Auxiliary Bishop of Trento, Italy |
| 30 Oct | 68.6 | Died | Juan Garcia Avello y Castrillón † | Bishop of Oviedo, Spain |
| 3 Nov | | Died | Pedro Alcántara de la Santísima Trinidad, O.C.D. † | Vicar Apostolic of Foreign Vicariate |
| 4 Nov | 52.8 | Ordained Bishop | Juan González Melgarejo † | Bishop of Santiago de Chile | Bishop of Arequipa, Peru |
| 6 Nov | | Born | Miguel Carlos José de Noronha e Abranches † | Lisbon | Cardinal, Priest of Lisboa, Portugal |
| 10 Nov | 74.2 | Appointed | Raffaele Cosimo de Girolami † | Prefect of the Congregation of Bishops and Regulars | Cardinal, Prefect of the Congregation for Indulgences and Relics |
| 12 Nov | 88.2 | Died | Léon Potier de Gesvres † | Cardinal, Archbishop Emeritus of Bourges, France |
| 15 Nov | | Born | Claude Simon † | Semur-en-Auxois | Bishop of Grenoble, France |
| 20 Nov | 75.9 | Resigned | Matthew Pritchard, O.F.M. † | Vicar Apostolic of Western District, England, Great Britain | Vicar Apostolic Emeritus |
| Born | Ferdinando Maria Saluzzo † | Naples | Cardinal, Official of the Roman Curia - Other |
| 22 Nov | 46.4 | Ordained Bishop | Juan Antonio Oruña † | Bishop of Osma, Spain |
| 40.8 | Ordained Bishop | Joseph Wilhelm Rinck von Balderstein † | Bishop of Basel, Switzerland |
| 5 Dec | | Born | Salvatore Maria Caccamo, O.S.A. † | Palermo, Italy | Titular Archbishop of Larissa in Thessalia |
| 7 Dec | 58.5 | Appointed | Antoni Józef Zolkowski † | Auxiliary Bishop of Vilnius, Lithuania |
| 10 Dec | 51.5 | Appointed | Pedro Miguel Argandoña Pastene Salazar † | Bishop of Tucumán, Argentina | Archbishop of La Plata o Charcas, Bolivia |
| 12 Dec | | Born | Giovanni Filippo Ferrone † | Bella | Bishop of Muro Lucano, Italy |
| 18 Dec | 51.6 | Appointed | Pedro Felipe de Azúa e Iturgoyen † | Archbishop of Santafé en Nueva Granada, Colombia | Archbishop Emeritus |
| 58.0 | Confirmed | Louis-François de Vivet de Montclus † | Bishop of Alès (Alais), France |
| 19 Dec | 23.0 | Ordained Priest | Andrea Gioannetti, O.S.B. † | Priest of Order of Saint Benedict | Cardinal, Archbishop of Bologna, Italy |