| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 65.0 | Appointed | Alessandro Alessandretti † | Bishop of Macerata-Tolentino, Italy | Bishop Emeritus |
| 35.4 | Ordained Priest | Rafael Andreu Guerrero † | Priest | Auxiliary Bishop of La Plata o Charcas, Bolivia |
| 23.9 | Ordained Priest | José María de Jesús Belaunzarán y Ureña, O.F.M. † | Priest of Order of Friars Minor | Bishop Emeritus of Linares o Nueva León, Nuevo León, México |
| Appointed | Carlo Benigni † | Bishop of Terni, Italy |
| Appointed | Antonio David † | Bishop of Narni, Italy |
| Appointed | Lourenço Correia de Sá e Benevides † | Bishop of Porto, Portugal |
| 67.1 | Died | Francesco Paolo Mandarani † | Bishop of Nicastro, Italy |
| Appointed | Agapios III Matar † | Patriarch of Antiochia {Antioch} (Melkite), Syria |
| Appointed | Vincenzo Maria Mossi † | Bishop of Alessandria (della Paglia), Italy |
| 69.0 | Ordained Bishop | Manuel Nicolás Rojas de Argandoña † | Bishop of Santa Cruz de la Sierra, Bolivia |
| Appointed | Luis Rodrigues Vilares † | Bishop of Funchal, Portugal |
| Died | Cyril VII Siage † | Patriarch of Antiochia {Antioch} (Melkite), Syria |
| 77.8 | Died | José Maria Sisto e Brito † | Bishop of Sora, Italy |
| Born | Vital-Honoré Tirmarche † | | Titular Bishop of Adrasus |
| Born | Antin Zubko † | | Auxiliary Bishop of Foreign Diocese |
| 17 Jan | 80.7 | Died | Francesco Zunica † | Archbishop of Acerenza e Matera, Italy |
| 19 Jan | | Born | Salvatore Fertitta † | Cefalu | Bishop of Cava e Sarno, Italy |
| Born | Damián Gordo Sáez † | Cantalojas | Bishop of Tortosa, Spain |
| Born | Gaspare Grasselini, C.O. † | Palermo | Cardinal, Priest of Confederation of Oratorians of St. Philip Neri |
| 20 Jan | | Born | Jacques-Marie-Adrien-Césaire Mathieu † | Paris | Cardinal, Archbishop of Besançon, France |
| 21 Jan | 68.9 | Died | Tomás Lorenzana Butrón † | Bishop of Gerona, Spain |
| 22 Jan | 59.1 | Appointed | James Louis O'Donel, O.F.M. † | Vicar Apostolic of Newfoundland, Canada | Vicar Apostolic Emeritus |
| 25 Jan | | Born | Jakob Laurentz Studach † | Altstetten, Switzerland | Vicar Apostolic of Sweden |
| 27 Jan | 89.4 | Died | Francesco Maria Banditi, C.R. † | Cardinal, Archbishop of Benevento, Italy |
| 29 Jan | | Born | Giovanni Renier † | Godego | Bishop of Belluno e Feltre, Italy |
| 5 Feb | | Born | Johannes von Geissel † | Gimmeldingen | Cardinal, Archbishop of Köln {Cologne}, Germany |
| 10 Feb | 71.5 | Died | Agustín Lezo Palomeque † | Archbishop of Zaragoza, Spain |
| 12 Feb | 50.5 | Appointed | Ignatius Cajetanus von Buset zu Faistenberg † | Bishop of Trieste, Italy |
| 14 Feb | 36.8 | Ordained Bishop | Antoni Angelowicz † | Bishop of Przemyśl (Ukrainian), Poland | Archbishop of Lviv (Ukrainian), Ukraine |
| 18 Feb | | Born | Vincenso Santucci † | Gorga | Cardinal, Prefect of the Congregation for Studies |
| 21 Feb | 46.2 | Ordained Bishop | Francisco Javier de Lizana y Beaumont † | Titular Bishop of Thaumacus | Archbishop of México, Federal District |
| 60.5 | Ordained Bishop | Antonio Ramón de Espinosa y Lorenzo, O.P. † | Bishop of Mérida, Venezuela |
| 24 Feb | 69.4 | Died | Karl Aloys Graf von Königsegg und Rothenfels † | Auxiliary Bishop of Köln {Cologne}, Germany |
| Born | Charles-Thomas Thibault † | Beynes | Bishop of Montpellier, France |
| 4 Mar | 64.9 | Died | Filippo Trenta † | Bishop of Foligno, Italy |
| 5 Mar | | Born | Gaetano Rossini † | Bari | Bishop of Molfetta-Giovinazzo-Terlizzi, Italy |
| 6 Mar | | Born | Jean-Irénée Depéry † | Challex | Bishop of Gap, France |
| 8 Mar | | Born | Jean-Joseph-Marie-Eugène de Jerphanion † | Le Puy-en-Velay | Archbishop of Albi, France |
| Born | Nikolaus von Weis † | Rimlingen | Bishop of Speyer, Germany |
| 16 Mar | | Born | Fidèle Sutter, O.F.M. Cap. † | Ferrara, Italy | Vicar Apostolic Emeritus of Tunis, Tunisia |
| 17 Mar | 61.1 | Installed | Ignacy Błażej Franciszek Krasicki † | Archbishop of Gniezno, Poland |
| 19 Mar | 53.6 | Installed | Mateus de Abreu Pereira † | Bishop of São Paulo, Brazil |
| 23 Mar | | Born | St. Laurent-Joseph-Marius Imbert, M.E.P. † | Marignane, France | Vicar Apostolic of Corea |
| 24 Mar | 72.8 | Died | Antonio Caballero y Góngora † | Bishop of Córdoba, Spain |
| 26 Mar | 23.2 | Ordained Priest | Bonifaz Kaspar von Urban † | Priest of Order of St. Augustine | Archbishop of Bamberg, Germany |
| 30 Mar | 65.7 | Died | Nicola Colonna di Stigliano † | Cardinal, Cardinal-Priest of S. Stefano al Monte Celio |
| 31 Mar | 77.5 | Died | Carlo Zangheri † | Bishop of Assisi, Italy |
| 3 Apr | 24.0 | Ordained Priest | Franz Ferdinand (Johann Franz) Fritz, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Hildesheim, Germany |
| 10 Apr | 63.7 | Installed | Johann Karl Reichsgraf von Hohenzollern-Hechingen † | Bishop of Warmia, Poland |
| 45.3 | Ordained Bishop | Charles La Mothe, M.E.P. † | Titular Bishop of Castoria | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 11 Apr | 73.5 | Died | Stephan Alexander Würdtwein † | Auxiliary Bishop of Worms, Germany |
| 17 Apr | | Born | Dominique-Augustin Dufêtre † | Lyon | Bishop of Nevers, France |
| 26 Apr | 71.3 | Died | Blas Manuel Sobrino y Minayo † | Bishop of Trujillo, Peru |
| 27 Apr | | Born | Jean Sarrabeyrouse (Sarebayrouze) † | Merville | Auxiliary Bishop of Ajaccio, France |
| 28 Apr | 70.9 | Died | Angelo Maria Durini † | Cardinal, Titular Archbishop of Ancyra |
| 2 May | | Born | Thomas Joseph Brown, O.S.B. † | Bath | Bishop of Newport and Menevia, Wales, Great Britain |
| 75.9 | Died | Juan García Ruiz, O.S.A. † | Bishop of Nueva Caceres, Philippines |
| 64.2 | Died | Wenzel Kobaltz † | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 6 May | 80.3 | Died | Jean de la Croix de Castries-Mairargues † | Bishop of Vabres, France |
| 14 May | | Born | João d'Aguiar † | Evora | Bishop Emeritus of Bragança e Miranda, Portugal |
| 16 May | 59.2 | Died | Vittorio Maria Baldassare Gaetano Costa d'Arignano † | Cardinal, Archbishop of Torino {Turin}, Italy |
| 23.5 | Ordained Priest | Ján Krstitel Ladislav Pyrker (Pryker), O. Cist. † | Priest of Order of Cistercians | Archbishop of Eger, Hungary |
| 17 May | | Born | Martinus Johannes Niewindt † | | Vicar Apostolic of Curaçao, Netherlands Antilles, Antilles |
| 20 May | | Born | Clément Bonnand, M.E.P. † | Saint-Maurice-sur-Dargoire, France | Vicar Apostolic of Pondicherry, India |
| 21 May | 22.8 | Ordained Priest | Francesco Maria Cipriani, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Veroli, Italy |
| 25.0 | Ordained Priest | Johann Jakob Humann † | Priest of Mainz, Germany | Bishop of Mainz, Germany |
| 26 May | 69.1 | Installed | Francisco Gabriel de Olivares y Benito † | Bishop of Durango, México |
| 27 May | 56.3 | Confirmed | J. Damián Martínez de Galinzoga, O.F.M. † | Bishop of Tarazona, Spain |
| 28 May | | Born | Michele Navazio † | Melfi | Bishop of L’Aquila, Italy |
| 30 May | 66.4 | Died | Diego de Jesus Jardim, O.S.H. † | Bishop of Elvas, Portugal |
| 1 Jun | | Born | François-Victor Rivet † | Saint-Germain-en-Laye | Bishop of Dijon, France |
| 19 Jun | | Died | Denis Conway † | Bishop of Limerick, Ireland |
| 43.8 | Appointed | Francesco Maria Giampè † | Bishop of Assisi, Italy |
| 50.3 | Succeeded | John Young † | Bishop of Limerick, Ireland |
| 20 Jun | | Born | Luigi Amat di San Filipo e Sorso † | Sinnai | Cardinal, Official of the Roman Curia - Other |
| 21 Jun | 74.5 | Died | Louis-Jérême de Suffren de Saint-Tropez † | Bishop of Nevers, France |
| 22 Jun | 54.9 | Appointed | José da Costa e Torres † | Bishop of Elvas, Portugal | Archbishop of Braga, Portugal |
| 27 Jun | 57.8 | Appointed | Agustín Ayestarán Landa † | Bishop of Córdoba, Spain |
| 50.9 | Confirmed | Ignatius Cajetanus von Buset zu Faistenberg † | Bishop of Trieste, Italy |
| 43.9 | Appointed | Jean-Baptiste d'Odet † | Bishop of Lausanne, Switzerland |
| 38.7 | Appointed | Teresio Maria Carlo Vittorio Ferrero della Marmora † | Bishop of Casale Monferrato, Italy | Cardinal, Bishop Emeritus of Saluzzo, Italy |
| 56.9 | Appointed | Santiago Pérez Arenillas † | Bishop of Gerona, Spain |
| 57.3 | Appointed | Domenico Spinucci † | Cardinal, Archbishop of Benevento, Italy |
| 58.7 | Appointed | Antonio Tavira Almazán † | Bishop of Osma, Spain | Bishop of Salamanca, Spain |
| 46.8 | Appointed | Manuel Verdugo Albiturría † | Bishop of Islas Canarias {Canary Islands}, Spain |
| 28 Jun | | Appointed | Antonio Moscardini † | Bishop of Foligno, Italy |
| 3 Jul | 38.7 | Ordained Bishop | Teresio Maria Carlo Vittorio Ferrero della Marmora † | Bishop of Casale Monferrato, Italy | Cardinal, Bishop Emeritus of Saluzzo, Italy |
| 8 Jul | 62.7 | Died | Adam Stanisław Naruszewicz † | Bishop of Luceoria o Łuck e Zytomir o Zytomierz, Ukraine |
| 12 Jul | 60.6 | Died | Nicola Zoppetti, O.S.A. † | Bishop of Fabriano e Matelica, Italy |
| 19 Jul | 44.2 | Installed | Juan Cruz Ruiz de Cabañas y Crespo † | Bishop of Guadalajara, Jalisco, México |
| 29 Jul | | Born | Jozef Vibe(r) † | Esztergom | Auxiliary Bishop of Rožňava, Slovakia |
| Aug | 64.9 | Appointed | Ignazio Busca † | Secretary of the Secretariat of State | Cardinal, Chamberlain (Camerlengo) of the College of Cardinals |
| 10 Aug | 23.0 | Ordained Priest | Ignatz Anton Demeter † | Priest of Augsburg, Germany | Archbishop of Freiburg im Breisgau, Germany |
| 17 Aug | | Died | Giulio Pignatelli, O.S.B. † | Archbishop of Salerno, Italy |
| 18 Aug | | Born | Stefano Kollarcsik † | Zebfalva | Bishop of Rožňava, Slovakia |
| 20 Aug | | Born | Bernardo Gárate y López de Arizmendi † | México | Bishop of Querétaro, Querétaro, México |
| 21 Aug | 47.0 | Ordained Bishop | Manuel Verdugo Albiturría † | Bishop of Islas Canarias {Canary Islands}, Spain |
| 24 Aug | | Born | José Agustín Domínguez y Díaz † | Zaachila | Bishop of Antequera, Oaxaca, México |
| 27 Aug | 58.7 | Died | Charles-Joseph Compans de Brichanteau † | Bishop Emeritus of Saint-Jean-de-Maurienne, France |
| 29 Aug | | Born | Giovanni Battista Pellei † | Castignano | Bishop of Acquapendente, Italy |
| 1 Sep | 58.4 | Died | Francisco Ramón Larumbre † | Bishop of Tudela, Spain |
| 5 Sep | | Born | José Maria Barrutia † | Guatemala | Auxiliary Bishop of Guatemala |
| 11 Sep | 47.2 | Ordained Bishop | Fermín José Fuero y Gómez Martinez Arañon † | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| 17 Sep | | Born | Gennaro di Giacomo † | Napoli | Bishop Emeritus of Alife, Italy |
| 62.2 | Installed | Franciszek Ksawery Graf Rydzyński † | Bishop of Chelmno (Culma), Poland |
| 18 Sep | 264.5 | Beatified | St. Juan de Ribera † | Archbishop of Valencia, Spain |
| 57.1 | Ordained Bishop | Santiago Pérez Arenillas † | Bishop of Gerona, Spain |
| 20 Sep | 64.7 | Died | Hugues-François de Regnault-Bellescize † | Bishop of Saint-Brieuc, France |
| 21 Sep | 59.7 | Ordained Bishop | James Louis O'Donel, O.F.M. † | Vicar Apostolic of Newfoundland, Canada | Vicar Apostolic Emeritus |
| 24 Sep | 23.1 | Ordained Priest | Giuseppe della Porta Rodiani † | Priest | Cardinal, Auxiliary Bishop of Roma {Rome}, Italy |
| 27 Sep | 74.8 | Died | Emanuele Maria Pignone del Carretto, O.S.A. † | Bishop of Sessa Aurunca, Italy |
| 2 Oct | 62.9 | Died | Manuel Azamor y Ramírez † | Bishop of Buenos Aires, Argentina |
| 60.4 | Died | Domingo Ramón Fernández Angulo † | Bishop of Tui, Spain |
| 7 Oct | 59.4 | Died | Thomas Johann Kaspar Reichsgraf von Thun und Hohenstein † | Bishop of Passau, Germany |
| 9 Oct | | Born | John Murdoch † | Wellheads, Enzie | Vicar Apostolic of Western District, Scotland, Great Britain |
| 15 Oct | | Born | John Stephen (Jean Etienne) Bazin † | Duerne, France | Bishop of Vincennes, Indiana, USA |
| Born | Georg Anton Brinkmann † | Billerbeck | Auxiliary Bishop of Münster, Germany |
| 22 Oct | 70.2 | Died | Giulio Cesare Viancini † | Bishop of Biella, Italy |
| 23 Oct | 51.2 | Ordained Bishop | Ignatius Cajetanus von Buset zu Faistenberg † | Bishop of Trieste, Italy |
| 24 Oct | | Born | Filippo de' Conti Curoli † | Faenza | Bishop of Rieti, Italy |
| Born | Rafael Manso † | Villamayor de Campos | Bishop of Zamora, Spain |
| 4 Nov | | Born | Guillaume-Elisée Martial † | Bordeaux | Bishop of Saint-Brieuc (-Tréguier), France |
| 9 Nov | 23.2 | Ordained Priest | José Agustín Molina y Villafañe † | Priest | Vicar Apostolic of Salta, Argentina |
| 13 Nov | 40.7 | Ordained Priest | Giuseppe Maria Spina † | Priest | Cardinal, Archbishop Emeritus of Genova, Italy |
| 18 Nov | | Born | Karl Arnold-Obrist † | Solothurn | Bishop of Basel, Switzerland |
| 21 Nov | | Born | Louis-Charles Buquet † | Paris | Auxiliary Bishop of Paris, France |
| 22 Nov | 60.9 | Died | Alexandre-Joseph-Alexis de Bruyère de Chalabre † | Bishop Emeritus of Saint-Omer, France |
| 23 Nov | 79.2 | Died | Julián Gascueña Herráiz, O.F.M. † | Bishop of Avila, Spain |
| 24 Nov | 84.4 | Died | Nicolò Antonio Giustiniani, O.S.B. † | Bishop of Padova {Padua}, Italy |
| 25 Nov | | Born | Bernard Buissas † | Toulouse | Bishop of Limoges, France |
| 26 Nov | 24.5 | Ordained Priest | John Murphy † | Priest | Bishop of Cork, Ireland |
| 30 Nov | 44.3 | Ordained Bishop | Jean-Baptiste d'Odet † | Bishop of Lausanne, Switzerland |
| 3 Dec | | Born | Francis Patrick Kenrick † | Dublin, Ireland | Archbishop of Baltimore, Maryland, USA |
| 6 Dec | 35.9 | Ordained Priest | Lothar Anselm Freiherr von Gebsattel † | Priest of Würzburg, Germany | Archbishop of München und Freising {Munich}, Germany |
| 9 Dec | | Born | Domenico Lucciardi † | Sarzano | Cardinal, Bishop of Senigallia, Italy |
| 13 Dec | 48.7 | Appointed | Leopold Leonhard Reichsgraf von Thun † | Bishop of Passau, Germany |
| 17 Dec | 23.1 | Ordained Priest | Giuseppe Gaetano Incontri † | Priest of Volterra, Italy | Bishop |
| 18 Dec | | Appointed | Francesco Saverio Bassi, O.S.B. † | Archbishop of Chieti, Italy |
| 50.5 | Appointed | Salvatore Spinelli, O.S.B. † | Archbishop of Salerno, Italy |
| 30 Dec | | Born | Eduard Jakob Wedekin † | Groß-Düngen | Bishop of Hildesheim, Germany |