| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 71.4 | Died | Mariano Amato † | Bishop of Crotone (Cotrone), Italy |
| Born | Giuseppe Bonventura Berardi, O.F.M. Conv. † | Ravenna, Italy | Bishop of Foreign Diocese |
| 65.4 | Died | Gaspare Lancellotto Birago † | Bishop of Bobbio, Italy |
| 60.8 | Died | Sebastiano Bonaiuti † | Bishop of Monte Feltre, Italy |
| Appointed | Cesare Antonio Caracciolo † | Archbishop of Conza, Italy |
| 69.0 | Resigned | Giovanbattista Caracciolo, C.R. † | Bishop of Aversa, Italy | Bishop Emeritus |
| Born | Francisco Ferreira de Azevedo † | Bahia | Bishop of Goiás, Brazil |
| Died | Tommaso Galli † | Bishop of Tivoli, Italy |
| Died | Pier Maria Giustiniani, O.S.B. † | Bishop of Ventimiglia, Italy |
| 27.6 | Ordained Priest | Joseph Ernest Gandolph Graf von Kuenburg † | Priest of Salzburg, Austria | Bishop of Lavant, Slovenia |
| 35.2 | Ordained Priest | Francisco José Marán † | Priest of Cuzco, Peru | Bishop of Santiago de Chile |
| Died | Giuseppi Maria Massoni † | Bishop of Sagone, France |
| Died | Júlio Francisco de Oliveira † | Bishop of Viseu, Portugal |
| Died | Marcello Capano Orsini † | Archbishop of Conza, Italy |
| 60.7 | Resigned | Girolamo Palermo, C.R. † | Bishop of Mazara del Vallo, Italy | Bishop Emeritus |
| 23.2 | Ordained Priest | Pierre-Joseph-Georges Pigneau de Béhaine, M.E.P. † | Priest of La Société des Missions Etrangčres | Vicar Apostolic of Cochin {Cocincina}, Vięt Nam |
| 77.2 | Died | Luca Niccolň Recco † | Bishop of Ripatransone, Italy |
| 24.0 | Ordained Priest | Francesco Pio Santi † | Priest | Bishop of Sovana-Pitigliano, Italy |
| Born | Thomas Scallan, O.F.M. † | Wexford, Ireland | Vicar Apostolic of Newfoundland, Canada |
| 48.4 | Appointed | Tommaso Taglialatela † | Bishop of Sora, Italy |
| 60.0 | Appointed | Walenty Franciszek Wężyk † | Bishop of Przemyśl, Poland |
| Jan | 44.1 | Confirmed | Henri-Joseph-Claude de Bourdeilles † | Bishop of Soissons, France | Bishop Emeritus |
| 9 Jan | 72.1 | Died | Filippo Niccolň Cecina † | Coadjutor Bishop of Volterra, Italy |
| 13 Jan | 22.9 | Ordained Priest | Michel Leopold Freiherr Brigido von Marenfels und Bresoviz † | Priest of Seckau, Austria | Bishop of Spiš, Slovakia |
| Born | Jean-François de Saunhac-Belcastel † | Amplac | Bishop of Perpignan-Elne, France |
| 18 Jan | 61.3 | Died | Juan Francisco Manrique Lara † | Bishop of Plasencia, Spain |
| 21 Jan | | Born | Vincenzo Rocca † | Cercemaggiore | Bishop of Larino, Italy |
| 27 Jan | 40.1 | Ordained Bishop | Charles-Joseph de Raffélis de Saint-Sauveur † | Bishop of Tulle, France |
| 30 Jan | | Born | Emmanuele Custo † | Palermo | Bishop of Mazara del Vallo, Italy |
| 3 Feb | | Ordained Bishop | Pio Manzador, B. † | Bishop of Senj (-Modruš), Croatia | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| 4 Feb | 39.4 | Appointed | Guido Calcagnini † | Titular Archbishop of Tarsus | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 56.8 | Appointed | Filippo Maria Pirelli † | Cardinal, Titular Archbishop of Damascus |
| 45.5 | Appointed | Francisco Fabián y Fuero † | Bishop of Tlaxcala, Tlaxcala, México | Archbishop Emeritus of Valencia, Spain |
| 10 Feb | 39.4 | Ordained Bishop | Guido Calcagnini † | Titular Archbishop of Tarsus | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 56.8 | Ordained Bishop | Filippo Maria Pirelli † | Cardinal, Titular Archbishop of Damascus |
| 13 Feb | | Born | Francisco Ramón Valentín de Casaus y Torres, O.P. † | Jaca, Spain | Archbishop of Guatemala |
| 2 Mar | 22.2 | Ordained Priest | Francisco Leităo de Carvalho † | Priest | Bishop of Beja, Portugal |
| 71.8 | Died | Christian Albert Anton von Merle † | Auxiliary Bishop of Worms, Germany |
| 3 Mar | 24.4 | Ordained Priest | Ferdinand Kindermann † | Priest of Praha {Prague}, Czech Republic | Bishop of Litomĕrice, Czech Republic |
| 10 Mar | 39.8 | Ordained Bishop | Ange-François de Talaru de Chalmazel † | Bishop of Coutances, France |
| 23 Mar | 80.8 | Died | Juan Francisco Navarro Salvador y Gilabert † | Bishop of Albarracin, Spain |
| 27 Mar | 33.1 | Confirmed | Jean-de-Dieu-Raymond de Boisgelin de Cucč † | Bishop of Lavaur, France | Cardinal, Archbishop of Tours, France |
| 64.9 | Appointed | Niccolň Borgia † | Bishop of Aversa, Italy |
| Installed | Juan Carlos de Vilches y Cabrera † | Bishop of León en Nicaragua |
| 35.7 | Appointed | Manuel Ferrer y Figueredo † | Titular Archbishop of Edessa in Macedonia | Bishop of Málaga, Spain |
| 25.5 | Confirmed | Klemens Wenzeslaus Herzog von Sachsen † | Coadjutor Bishop of Augsburg, Germany | Bishop |
| 5 Apr | 62.3 | Died | Cornelio Caprara † | Cardinal, Cardinal-Deacon of Ss. Cosma e Damiano |
| Born | Ignatius Vincentius Matthy † | Kobierschin | Bishop of Chelmno (Culma), Poland |
| 20 Apr | 58.3 | Died | Prospero Colonna di Sciarra † | Cardinal, Cardinal-Deacon of S. Agata de’ Goti |
| 21 Apr | 59.3 | Ordained Bishop | Juan Luengo Pinto † | Bishop of Calahorra y La Calzada, Spain |
| Born | Augustin-Sulpice Zen-Ruffinen † | Leuk | Bishop of Sion {Sitten}, Switzerland |
| 22 Apr | 54.3 | Appointed | Miguel Anselmo Álvarez de Abreu y Valdéz † | Bishop of Antequera, Oaxaca, México |
| 60.3 | Appointed | Salvatore Andreani, B. † | Bishop of Lodi, Italy |
| 35.2 | Appointed | Jan Stefan Giedroyc † | Bishop of Inflanty (Livonia), Poland | Bishop of Samogizia o Tels (Zmudz), Lithuania |
| 55.3 | Appointed | Giovanni Pergolini † | Bishop of Monte Feltre, Italy | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 54.1 | Appointed | Franz Anton Xaver Reichsfreiherr von Scheben † | Auxiliary Bishop of Worms, Germany |
| 54.1 | Appointed | Franz Anton Xaver Reichsfreiherr von Scheben † | Titular Bishop of Assuras | Auxiliary Bishop of Worms, Germany |
| 65.3 | Appointed | Manuel Sosa Betencourt † | Bishop of Santafé en Nueva Granada, Colombia |
| 67.5 | Appointed | Luigi Maria Torreggiani † | Cardinal, Cardinal-Deacon of S. Agata de’ Goti |
| 36.3 | Appointed | Feliks Paweł Turski † | Bishop of Chełm, Poland | Bishop of Kraków, Poland |
| 45.3 | Appointed | Bernardo Velarde Velarde † | Bishop of Tortosa, Spain | Archbishop of Zaragoza, Spain |
| 45.1 | Appointed | Karl Friedrich Freiherr von Zehmen † | Auxiliary Bishop of Warmia, Poland |
| 45.1 | Appointed | Karl Friedrich Freiherr von Zehmen † | Titular Bishop of Lete | Auxiliary Bishop of Warmia, Poland |
| 28 Apr | 33.2 | Ordained Bishop | Jean-de-Dieu-Raymond de Boisgelin de Cucč † | Bishop of Lavaur, France | Cardinal, Archbishop of Tours, France |
| 1 May | 60.3 | Ordained Bishop | Salvatore Andreani, B. † | Bishop of Lodi, Italy |
| 68.2 | Died | Bonifatius (Giovanni Giuseppe) Cecotti, O.F.M. † | Bishop of Pedena, Austria |
| 9 May | | Born | Denis-Antoine-Luc de Frayssinous † | Curičres, France | Titular Bishop of Hermopolis Maior |
| 12 May | 70.0 | Died | Biagio Chiarelli † | Bishop of Ravello-Scala, Italy |
| 16 May | | Born | Giovanni Antonio Benvenuti † | Belvedere | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 26 May | 54.2 | Ordained Bishop | Franz Anton Xaver Reichsfreiherr von Scheben † | Titular Bishop of Assuras | Auxiliary Bishop of Worms, Germany |
| 28 May | | Born | Antonio Fernando Echanove Zaldívar † | Ochandiano | Archbishop of Tarragona, Spain |
| 1 Jun | 59.7 | Resigned | Manuel Murillo Argáiz † | Bishop of Segovia, Spain | Bishop Emeritus |
| 38.5 | Ordained Priest | Franz Joseph Sigismund von Roggenbach † | Priest of Basel, Switzerland | Bishop |
| Born | Joseph-Julien de Saint-Rome-Gualy † | Millau | Bishop of Carcassonne, France |
| 2 Jun | | Born | Giovanni Battista Accusani † | Acqui | Bishop of Vigevano, Italy |
| 5 Jun | 49.1 | Appointed | Bartolomeo Bitozzi † | Bishop of Ripatransone, Italy |
| 55.3 | Appointed | Francesco Maria Forlani † | Bishop of Civita Castellana e Orte, Italy |
| 54.4 | Appointed | José Cayetano Loazes Somoza † | Bishop of Palencia, Spain |
| 42.7 | Appointed | Francisco Antonio de Lorenzana y Butrón † | Bishop of Plasencia, Spain | Cardinal, Archbishop Emeritus of Toledo, Spain |
| 61.3 | Appointed | Juan José Martínez Escalzo † | Bishop of Segovia, Spain |
| 45.4 | Appointed | Michael Peter MacMahon (McMahon), O.P. † | Bishop of Killaloe, Ireland |
| 62.5 | Appointed | Giulio Matteo Natali † | Bishop of Tivoli, Italy |
| 54.6 | Appointed | Andrea Negroni † | Cardinal-Deacon of Ss. Vito, Modesto e Crescenzia | Cardinal, Cardinal-Deacon of S. Agata de’ Goti |
| 6 Jun | | Born | Francesco Maria Zoppi † | Canobbio | Bishop Emeritus of Massa Carrara, Italy |
| 11 Jun | | Born | José Casquete Prado, O.S. † | Fuente de Cantos, Spain | Titular Bishop of Cisamus |
| 24 Jun | 80.5 | Died | Francisco José de Figueredo y Victoria † | Archbishop of Guatemala |
| 1 Jul | 70.1 | Died | Giuseppe Gallarati † | Bishop of Lodi, Italy |
| 3 Jul | 62.0 | Died | Manuel José Rubio y Salinas † | Archbishop of México, Federal District |
| 5 Jul | 31.3 | Appointed | Scipione Borghčse † | Titular Archbishop of Teodosia | Cardinal, Prefect Emeritus of the Prefecture of the Papal Household |
| 14 Jul | | Born | Alessandro Berettini † | Aquila | Bishop of Teramo, Italy |
| 36.0 | Ordained Bishop | Manuel Ferrer y Figueredo † | Titular Archbishop of Edessa in Macedonia | Bishop of Málaga, Spain |
| 45.6 | Ordained Bishop | Bernardo Velarde Velarde † | Bishop of Tortosa, Spain | Archbishop of Zaragoza, Spain |
| 45.9 | Ordained Bishop | Francisco Fabián y Fuero † | Bishop of Tlaxcala, Tlaxcala, México | Archbishop Emeritus of Valencia, Spain |
| 29 Jul | | Born | Simon Garnier † | Saint-Vallier-Sur-Marne | Bishop of Vannes, France |
| 4 Aug | 45.6 | Ordained Bishop | Michael Peter MacMahon (McMahon), O.P. † | Bishop of Killaloe, Ireland |
| 5 Aug | 60.1 | Appointed | Pietro Di Gennaro † | Bishop of Cava, Italy |
| 52.9 | Appointed | Michele Tafuri † | Bishop of Ravello-Scala, Italy | Bishop of Cava, Italy |
| 11 Aug | 54.5 | Ordained Bishop | José Cayetano Loazes Somoza † | Bishop of Palencia, Spain |
| 42.9 | Ordained Bishop | Francisco Antonio de Lorenzana y Butrón † | Bishop of Plasencia, Spain | Cardinal, Archbishop Emeritus of Toledo, Spain |
| 61.5 | Ordained Bishop | Juan José Martínez Escalzo † | Bishop of Segovia, Spain |
| 16 Aug | | Born | Luigi Ciacchi † | Pesaro | Cardinal, Priest of the Roman Curia - Other |
| 23 Aug | 53.6 | Died | Pierre-Joseph de Brunes de Monlouet † | Bishop of Saint-Omer, France |
| 1 Sep | 28.9 | Ordained Priest | Franz Freiherr von Raigesfeld, S.J. † | Priest of Society of Jesus | Auxiliary Bishop of Ljubljana, Slovenia |
| 8 Sep | | Born | Bartolomeo Alberto (Mauro) Cappellari, O.S.B. † | Belluno | Pope (Roma {Rome}, Italy) |
| 45.4 | Ordained Bishop | Karl Friedrich Freiherr von Zehmen † | Titular Bishop of Lete | Auxiliary Bishop of Warmia, Poland |
| 10 Sep | 82.1 | Died | Pierfrancesco Bussi † | Cardinal, Cardinal-Priest of S. Maria in Via |
| 11 Sep | | Born | Philibert de Bruillard † | Dijon | Bishop Emeritus of Grenoble, France |
| 20 Sep | | Born | Joaquim de Meneses e Ataide, O.S.A. † | Porto | Bishop of Elvas, Portugal |
| 21 Sep | 24.2 | Ordained Priest | Vincenzo Calŕ † | Priest | Archbishop of Sorrento, Italy |
| 25.1 | Ordained Priest | Barnaba (Gregorio) Chiaramonti, O.S.B. † | Priest of Order of Saint Benedict | Pope (Roma {Rome}, Italy) |
| 22.9 | Ordained Priest | Ercole Teresi † | Priest | Archbishop of Monreale, Italy |
| 22 Sep | 22.9 | Ordained Priest | Vincenzo Rogadei, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Caserta, Italy |
| 1 Oct | | Died | Angelo Antonio Pallante † | Bishop of San Severo, Italy |
| 14 Oct | | Born | Franciszek Borgiasz Mackiewicz † | Lubartów, Poland | Bishop of Foreign Diocese |
| 18 Oct | 17.3 | Professed | László Koszeghy von Romete † | Member of Society of Jesus | Bishop of Csanád, Hungary |
| 21 Oct | | Died | Pietro Cristiani † | Bishop of Piacenza, Italy |
| 24 Oct | | Born | Raffaele Mazzio † | Rome | Cardinal, Cardinal-Priest of S. Maria in Trastevere |
| Born | Franz Arnold Melchers † | Werne | Auxiliary Bishop of Münster, Germany |
| 28 Oct | 52.6 | Ordained Bishop | Isidro Rodríguez Lorenzo, O.S.Bas. † | Bishop of Comayagua, Honduras | Archbishop Emeritus of Santo Domingo, Dominican Republic |
| 2 Nov | 61.7 | Died | Bartolomeo Gradenigo † | Archbishop of Udine, Italy |
| 3 Nov | | Born | Felipe González Abarca, O. de M. † | Avilés | Bishop of Santander, Spain |
| 5 Nov | 64.2 | Died | Jean-Antoine Buocher, O.F.M. † | Vicar Apostolic Emeritus of Shansi {Scian-Si} (Chan-Si), China |
| 8 Nov | | Appointed | Giovanni Percoto, B. † | Vicar Apostolic of Ava e Pegů, Myanmar |
| Appointed | Giovanni Percoto, B. † | Titular Bishop of Maxula Prates | Vicar Apostolic of Ava e Pegů, Myanmar |
| 10 Nov | 42.9 | Ordained Bishop | Francesco Magni, O.F.M. † | Titular Bishop of Miletopolis | Vicar Apostolic Emeritus of Shansi {Scian-Si} (Chan-Si), China |
| 11 Nov | | Died | Joăo de Azevedo † | Bishop of Portalegre, Portugal |
| 12 Nov | 65.9 | Died | Manuel Sosa Betencourt † | Bishop of Santafé en Nueva Granada, Colombia |
| 26 Nov | | Born | Salvador Jiménez Padilla † | Málaga, Spain | Bishop of Popayán, Colombia |
| 28 Nov | | Born | Francisco Genovés, O.P. † | Valencia, Spain | Bishop of Cebu, Philippines |
| 9 Dec | | Died | Antonio Fonseca † | Bishop of Jesi, Italy |
| 43.8 | Appointed | Juan Molina Lario y Navarro † | Bishop of Albarracin, Spain | Bishop of Málaga, Spain |
| 45.4 | Appointed | Francisco Antonio de la Riva Mazo † | Archbishop of Santafé en Nueva Granada, Colombia |
| 15 Dec | 44.0 | Ordained Bishop | Bertrand Reydellet, M.E.P. † | Titular Bishop of Gabala | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Vięt Nam |
| 18 Dec | 18.0 | Professed | Gerardo José Andrés Vázquez Parga, O. Cist. † | Member of Order of Cistercians | Bishop of Salamanca, Spain |
| 19 Dec | | Born | St. Domingo Henares, O.P. † | Baena, Spain | Coadjutor Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Vięt Nam |
| 21 Dec | 23.1 | Ordained Priest | Andreas Joseph Fahrmann † | Priest of Würzburg, Germany | Auxiliary Bishop |
| 24.2 | Ordained Priest | Innocenzo Maria Lirutti, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Verona, Italy |
| 22 Dec | 32.6 | Ordained Priest | Giovanni Battista Caprara Montecuccoli † | Priest of Bologna, Italy | Cardinal, Archbishop of Milano {Milan}, Italy |