| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 52.0 | Appointed | Jan Alojzy Aleksandrowicz † | Bishop of Chelm, Poland |
| Appointed | Lourenço de Alencastre † | Bishop of Leiria, Portugal |
| Died | Miguel António Barreto de Meneses † | Bishop of Miranda, Portugal |
| Born | Pio Bighi † | | Titular Archbishop of Philippi |
| 23.3 | Ordained Priest | Etienne-Hubert de Cambacérès † | Priest | Cardinal, Archbishop of Rouen, France |
| Appointed | Charles-Joseph Compans de Brichanteau † | Bishop of Saint-Jean-de-Maurienne, France | Bishop Emeritus |
| 27.0 | Ordained Priest | William Coppinger † | Priest | Bishop of Cloyne, Ireland |
| 24.8 | Ordained Priest | Binkentios Coressi † | Priest | Vicar Apostolic of Constantinople, Turkey |
| 23.2 | Ordained Priest | Paolo Garzilli † | Priest | Bishop of Sessa Aurunca, Italy |
| Born | Antonio Giurico † | Veglia | Bishop of Dubrovnik (Ragusa), Croatia |
| 50.0 | Appointed | Augustin-René-Louis Le Mintier † | Bishop of Tréguier, France |
| Died | Lourenço de Lencastre † | Bishop of Elvas, Portugal |
| 40.0 | Appointed | Jean-Baptiste-Joseph de Lubersac † | Bishop of Chartres, France |
| 23.1 | Ordained Priest | Jean-Baptiste-François-Nicolas Millaux † | Priest | Bishop of Nevers, France |
| 63.0 | Died | Andrzej Mikolaj Stanislaw Kostka Mlodziejowski † | Bishop of Poznań, Poland |
| 63.0 | Appointed | Bernardo Pinto Ribeiro Seixas † | Bishop of Bragança e Miranda, Portugal |
| Died | Domenico Russo † | Bishop of Potenza, Italy |
| Died | Bernardo de São Caetano, O.S.A. † | Bishop of São Tomé of Meliapore, India |
| Appointed | João Teixeira de Carvalho † | Bishop of Elvas, Portugal |
| Appointed | Anselmo Maria Toppi † | Bishop of Termoli, Italy |
| 26.0 | Ordained Priest | Charles Tuohy † | Priest of Limerick, Ireland | Bishop |
| 55.8 | Ordained Bishop | Luis Velasco, O.F.M. † | Bishop of Paraguay |
| 1 Jan | 46.9 | Appointed | Joseph Adam Graf Arco † | Bishop of Seckau, Austria |
| 26 Jan | 63.9 | Appointed | Michel Conseil † | Bishop of Chambéry, France |
| 28 Jan | 45.1 | Ordained Bishop | Valentin Anton Reichsgraf von Schneid † | Titular Bishop of Corycus | Auxiliary Bishop of Regensburg, Germany |
| 1 Feb | 66.2 | Died | Manuel de Abad e Illanar, O. Praem. † | Bishop of Arequipa, Peru |
| 7 Feb | | Born | Gaspare Bernardo Pianetti † | Iesi | Cardinal, Bishop Emeritus of Viterbo e Tuscania, Italy |
| 22 Feb | | Born | Francesco di Paola Villadecani † | Messina | Cardinal, Archbishop of Messina, Italy |
| 26 Feb | 63.2 | Died | William Walton † | Vicar Apostolic of Northern District, England, Great Britain |
| 10 Mar | 64.0 | Confirmed | Michel Conseil † | Bishop of Chambéry, France |
| 11 Mar | 23.0 | Ordained Priest | Giulio Maria Alvisini † | Priest | Bishop of Fossombrone, Italy |
| 76.0 | Died | Franz Joseph Friedrich Ambuel † | Bishop of Sion {Sitten}, Switzerland |
| 12 Mar | 44.2 | Ordained Bishop | Alexander MacDonald † | Titular Bishop of Polemonium | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 15 Mar | | Born | Antonio Lao Cuevas † | Tiñana | Bishop of Guadix, Spain |
| 20 Mar | 39.0 | Appointed | Johann Valentin Heimes † | Auxiliary Bishop of Worms, Germany |
| 39.0 | Appointed | Johann Valentin Heimes † | Titular Bishop of Aulon | Auxiliary Bishop of Worms, Germany |
| 50.8 | Succeeded | Antoni Onufry Okecki † | Bishop of Poznań, Poland | Bishop of Chelm, Poland |
| 74.4 | Appointed | Joseph Ferdinand Guidobald Reichsgraf von Spaur und Valör † | Titular Bishop of Abila in Palaestina |
| 61.5 | Confirmed | Joseph Philipp Franz Reichsgraf von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 21 Mar | 72.7 | Died | Francisco José Rodríguez Chico † | Bishop of Teruel, Spain |
| 25 Mar | | Born | José Antonio García Balsalobre y Rada, O.S. † | Torrubia del Campo, Spain | Titular Bishop of Tanis |
| 6 Apr | 47.2 | Installed | Joseph Adam Graf Arco † | Bishop of Seckau, Austria |
| 7 Apr | 69.2 | Died | Alonso Cano Nieto, O.SS.T. † | Bishop of Segorbe, Spain |
| 8 Apr | | Born | Salvador José Reyes García de Lara † | La Zubía | Archbishop of Granada, Spain |
| 9 Apr | 58.5 | Ordained Bishop | Antônio Corrêa, O.S.A. † | Archbishop of São Salvador da Bahia, Brazil |
| 14 Apr | 39.1 | Ordained Bishop | Johann Valentin Heimes † | Titular Bishop of Aulon | Auxiliary Bishop of Worms, Germany |
| 16 Apr | 55.6 | Ordained Bishop | Agustín Lezo Palomeque † | Bishop of Pamplona, Spain | Archbishop of Zaragoza, Spain |
| 22 Apr | | Born | Luigi Carsidoni † | Camerino | Bishop of Fano, Italy |
| 23 Apr | | Ordained Bishop | Charles-Joseph Compans de Brichanteau † | Bishop of Saint-Jean-de-Maurienne, France | Bishop Emeritus |
| 60.3 | Ordained Bishop | Diego Martín Rodríguez, O.F.M. † | Bishop of Ceuta, Spain | Bishop of Coria, Spain |
| 25 Apr | | Born | Josef Anton Salzmann † | Luzern | Bishop of Basel, Switzerland |
| 28 Apr | 75.5 | Resigned | Franz Heinrich Wendelin Freiherr von Kageneck † | Auxiliary Bishop of Eichstätt, Germany | Auxiliary Bishop Emeritus |
| 29 Apr | | Born | Manuel Ramón Arias Teijeiro de Castro † | Cabanelas | Bishop Emeritus of Santander, Spain |
| 47.6 | Resigned | Jacinto Carlos da Silveira † | Bishop of São Luís do Maranhão, Brazil | Bishop Emeritus |
| 30 Apr | 64.1 | Ordained Bishop | Michel Conseil † | Bishop of Chambéry, France |
| 50.3 | Ordained Bishop | Augustin-René-Louis Le Mintier † | Bishop of Tréguier, France |
| 2 May | 49.5 | Appointed | Leonardo Antonelli † | Prefect of the Congregation for Propagation of the Faith | Cardinal, Cardinal-Bishop of Ostia |
| 8 May | 37.3 | Ordained Priest | Joseph Konrad Freiherr von Schroffenberg, C.R.S.A. † | Priest of Confederation of Canons Regular of St. Augustine | Bishop of Freising, Germany |
| 20 May | 23.7 | Ordained Priest | Pietro Paolo Mazzichi † | Priest | Bishop of Montalto, Italy |
| 30.9 | Ordained Priest | Joaquim Maria Mascarenhas Castello Branco † | Priest | Bishop Emeritus of Angola e Congo, Angola |
| 29.7 | Ordained Priest | Luigi Ruffo Scilla † | Priest | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 24 May | 50.6 | Installed | Francisco José Marán † | Bishop of Concepción, Chile | Bishop of Santiago de Chile |
| 25 May | | Born | Andrea Jourdain † | S. Giovanni di Moriana | Bishop of Aosta, Italy |
| 26 May | 51.4 | Appointed | Franz Melchior Joseph Zen-Ruffinen † | Bishop of Sion {Sitten}, Switzerland |
| 30 May | | Born | Giovanni Tommaso Neuschel † | Varallya | Bishop Emeritus of Parma, Italy |
| 6 Jun | 74.6 | Ordained Bishop | Joseph Ferdinand Guidobald Reichsgraf von Spaur und Valör † | Titular Bishop of Abila in Palaestina |
| 8 Jun | | Born | William Crolly † | Ballykilbeg | Archbishop of Armagh, Ireland |
| 17 Jun | 46.2 | Appointed | Matthew Gibson † | Vicar Apostolic of Northern District, England, Great Britain |
| 46.2 | Appointed | Matthew Gibson † | Titular Bishop of Comama | Vicar Apostolic of Northern District, England, Great Britain |
| 18 Jun | 78.5 | Died | Jean-Louis de Gouyon de Vaudurand † | Bishop Emeritus of Saint-Pol-de-Léon, France |
| 19 Jun | 62.7 | Appointed | Julián Gascueña Herráiz, O.F.M. † | Bishop of Jaca, Spain | Bishop of Avila, Spain |
| 21 Jun | 59.7 | Died | Martin Nugk von Lichtenhoff † | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 24 Jun | | Born | Kazimierz Roch Dmochowski † | | Archbishop of Mohilev, Belarus |
| 27 Jun | | Born | Salvatore Lettieri † | Foggia | Bishop of Nardò, Italy |
| 2 Jul | | Born | Louis Fontana, M.E.P. † | Ivrée, Italy | Vicar Apostolic of Se-Ciuen, China |
| 12 Jul | | Born | Juan Gilberto Ruiz Capucín y Feijó † | Calahorra | Bishop of Cuenca, Ecuador |
| 16 Jul | 62.8 | Ordained Bishop | Julián Gascueña Herráiz, O.F.M. † | Bishop of Jaca, Spain | Bishop of Avila, Spain |
| Born | Sebastiano Soldati † | Padova | Bishop of Treviso, Italy |
| 18 Jul | 51.8 | Succeeded | Jean Davoust, M.E.P. † | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 19 Jul | | Born | Bernardo Antonino Squarcina, O.P. † | Vicenza | Bishop of Adria, Italy |
| 25 Jul | 25.5 | Ordained Priest | Nicola Serarcangeli † | Priest | Bishop of Fano, Italy |
| 27 Jul | 58.6 | Died | Bertrand Reydellet, M.E.P. † | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 29 Jul | 45.3 | Appointed | Johann Leopold Ritter von Hay † | Bishop of Hradec Králové, Czech Republic |
| 5 Aug | 73.6 | Died | Mathias Poncet de la Rivière † | Bishop Emeritus of Troyes, France |
| 7 Aug | 23.7 | Appointed | Max Franz (Maximilian Franciscus) von Habsburg-Lothringen (Österreich) † | Coadjutor Archbishop of Köln {Cologne}, Germany | Archbishop |
| 12 Aug | 38.4 | Ordained Bishop | William Gregory Sharrock, O.S.B. † | Titular Bishop of Telmissus | Vicar Apostolic of Western District, England, Great Britain |
| 14 Aug | | Born | Johann Aloys Hoffmann † | Regensburg | Auxiliary Bishop of Salzburg, Austria |
| 16 Aug | 23.7 | Appointed | Max Franz (Maximilian Franciscus) von Habsburg-Lothringen (Österreich) † | Coadjutor Bishop of Münster, Germany | Archbishop of Köln {Cologne}, Germany |
| Born | Jakob Joseph Wandt † | Dingelstädt | Bishop of Hildesheim, Germany |
| 3 Sep | 46.4 | Ordained Bishop | Matthew Gibson † | Titular Bishop of Comama | Vicar Apostolic of Northern District, England, Great Britain |
| 13 Sep | | Born | Nicola Mattei Baldini † | Pergola | Bishop of Montefiascone, Italy |
| 16 Sep | 68.1 | Appointed | Anselmo Rodríguez, O.S.B. † | Bishop of Almería, Spain |
| 17 Sep | 53.6 | Ordained Bishop | José Campos Julián, O.C.D. † | Bishop of Córdoba (Tucumán), Argentina | Archbishop of La Plata o Charcas, Bolivia |
| 18 Sep | 64.2 | Appointed | Juan García Montenegro † | Bishop of Urgell, Spain |
| 60.2 | Appointed | Juan Domingo González de la Reguera † | Archbishop of Lima, Peru |
| 45.7 | Appointed | José do Menino Jesus (Deus), O.C.D. † | Bishop of São Luís do Maranhão, Brazil | Bishop of Viseu, Portugal |
| 64.0 | Appointed | José Luis Mollinedo † | Bishop of Palencia, Spain |
| 56.2 | Appointed | Agustín Rubín Cevallos † | Bishop of Jaén, Spain |
| 46.2 | Appointed | Franciszek Ksawery Graf Rydzyński † | Auxiliary Bishop of Poznań, Poland | Bishop of Chelmno (Culma), Poland |
| 46.2 | Appointed | Franciszek Ksawery Graf Rydzyński † | Titular Bishop of Nilopolis | Bishop of Chelmno (Culma), Poland |
| 51.7 | Confirmed | Franz Melchior Joseph Zen-Ruffinen † | Bishop of Sion {Sitten}, Switzerland |
| 27 Sep | | Born | Manuel Posada y Garduño † | San Felipe el Grande | Archbishop of México, Federal District |
| 28 Sep | 24.3 | Ordained Priest | Bernhard Boll, O. Cist. † | Priest of Order of Cistercians | Archbishop of Freiburg im Breisgau, Germany |
| 29 Sep | 23.8 | Confirmed | Max Franz (Maximilian Franciscus) von Habsburg-Lothringen (Österreich) † | Coadjutor Archbishop of Köln {Cologne}, Germany | Archbishop |
| 23.8 | Confirmed | Max Franz (Maximilian Franciscus) von Habsburg-Lothringen (Österreich) † | Coadjutor Bishop of Münster, Germany | Archbishop of Köln {Cologne}, Germany |
| 9 Oct | 41.9 | Appointed | Johann Joseph Schüller von Ehrenthal † | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 19 Oct | | Born | Franz Laurenz Mauermann, O.S.B. † | Neuzelle | Vicar Apostolic of Foreign Diocese |
| 26 Oct | | Born | João Damasceno Da Silva Póvoas † | Porto | Bishop of Angola e Congo, Angola |
| 27 Oct | 70.6 | Died | Olivier-Simon Le Bon, M.E.P. † | Vicar Apostolic of Siam, Thailand |
| 30 Oct | 53.7 | Installed | José Campos Julián, O.C.D. † | Bishop of Córdoba (Tucumán), Argentina | Archbishop of La Plata o Charcas, Bolivia |
| 31 Oct | | Born | Imrich Palugyay † | Palúdzka | Bishop of Nitra, Slovakia |
| 12 Nov | 51.8 | Ordained Bishop | Franz Melchior Joseph Zen-Ruffinen † | Bishop of Sion {Sitten}, Switzerland |
| 15 Nov | | Born | Francesco Strani † | Bibiana | Bishop of Massa Carrara, Italy |
| 26 Nov | 64.2 | Ordained Bishop | José Luis Mollinedo † | Bishop of Palencia, Spain |
| 56.4 | Ordained Bishop | Agustín Rubín Cevallos † | Bishop of Jaén, Spain |
| 30 Nov | 64.4 | Ordained Bishop | Juan García Montenegro † | Bishop of Urgell, Spain |
| 45.2 | Ordained Bishop | John Geddes † | Titular Bishop of Marocco o Marruecos, Titular Sees | Coadjutor Vicar Apostolic Emeritus of Lowland District, Scotland, Great Britain |
| 45.9 | Ordained Bishop | José do Menino Jesus (Deus), O.C.D. † | Bishop of São Luís do Maranhão, Brazil | Bishop of Viseu, Portugal |
| 68.3 | Ordained Bishop | Anselmo Rodríguez, O.S.B. † | Bishop of Almería, Spain |
| 1 Dec | | Born | Angelo Maria Ficcarelli (Ficarelli) † | Reggio Emilia | Bishop of Reggio Emilia, Italy |
| 3 Dec | | Born | Francisco Javier Rodríguez Obregón † | Valladolid | Bishop of Badajoz, Spain |
| 11 Dec | 68.1 | Appointed | Paolo Francesco Antamori † | Cardinal, Bishop of Orvieto, Italy |
| 68.1 | Elevated to Cardinal | Paolo Francesco Antamori † | Cardinal, Bishop of Orvieto, Italy |
| 54.8 | Appointed | Francisco Cuadrillero Mota † | Bishop of Mondoñedo, Spain |
| 45.6 | Confirmed | Johann Leopold Ritter von Hay † | Bishop of Hradec Králové, Czech Republic |
| 64.3 | Appointed | Lorenzo Lay Anzano, O.P. † | Bishop of Segorbe, Spain |
| 54.7 | Appointed | Roque Martín Merino † | Bishop of Teruel, Spain |
| 54.9 | Appointed | Santiago Palmero † | Bishop of Badajoz, Spain |
| 51.3 | Appointed | Antonio María de los Reyes Almada, O.F.M. † | Bishop of Sonora, Sonora, México |
| 32.2 | Appointed | Felix Graf von Stubenberg † | Auxiliary Bishop of Eichstätt, Germany |
| 32.2 | Appointed | Felix Graf von Stubenberg † | Titular Bishop of Tanagra | Auxiliary Bishop of Eichstätt, Germany |
| 21 Dec | 24.2 | Ordained Priest | Patrício da Silva, O.S.A. † | Priest of Order of St. Augustine | Cardinal, Patriarch of Lisboa, Portugal |
| 23 Dec | 22.9 | Ordained Priest | Franz Ignaz von Streber † | Priest of Other | Auxiliary Bishop of München und Freising {Munich}, Germany |
| 40.9 | Ordained Deacon | Antonio Felice Zondadari † | Deacon | Cardinal, Archbishop of Siena, Italy |