| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Died | Bernardo de Arbizu y Ugarte † | Bishop of Cartagena, Colombia |
| 37.0 | Ordained Priest | Giovanni Angelico Braschi † | Priest | Pope (Roma {Rome}, Italy) |
| Appointed | Domenico Andrea Calvaccante (Cavalcante) † | Archbishop of Trani, Italy |
| Died | Giuseppe Davanzati † | Archbishop of Trani, Italy |
| 88.6 | Died | Lodovico Forni † | Bishop Emeritus of Reggio Emilia, Italy |
| Resigned | Innocenzo Gorgoni † | Bishop of Penne-Atri, Italy | President of the Pontifical Ecclesiastical Academy |
| Died | Girolamo Gravina † | Bishop of Patti, Italy |
| 76.0 | Died | Franciszek Antoni Kobielski † | Bishop of Luceoria o Łuck, Ukraine |
| Died | Michele Palma † | Archbishop of Chieti, Italy |
| Born | Gaudenzio Patrignani, O.F.M. † | | Bishop of Ferentino, Italy |
| Appointed | Gennaro Perrelli † | Bishop of Penne-Atri, Italy |
| Appointed | Apollinare Peruzzini, O.S.A. † | Bishop of Fossombrone, Italy |
| Appointed | Giuseppe Antonio de Requisenz † | Bishop of Siracusa, Italy |
| 60.8 | Died | José Ignacio Rodríguez Cornejo † | Bishop of Plasencia, Spain |
| 43.1 | Appointed | Jozef Karol Zbiško † | Official of Spiš, Slovakia |
| 5 Jan | 58.9 | Died | Anton Felix Ciurletti † | Auxiliary Bishop of Salzburg, Austria |
| 6 Jan | 74.8 | Died | Angelo Maria Quirini (Querini), O.S.B. † | Cardinal, Bishop of Brescia, Italy |
| 7 Jan | 46.9 | Appointed | Adam Friedrich Reichsgraf von Seinsheim † | Bishop of Würzburg, Germany |
| 8 Jan | 74.0 | Died | Niccolò Paolo Andrea Coscia † | Cardinal, Archbishop Emeritus of Benevento, Italy |
| 12 Jan | | Born | Jean-François Martin de Boisville † | Rouen | Bishop of Dijon, France |
| 19 Jan | 52.0 | Ordained Bishop | Charles-Marie de Quélen † | Bishop of Bethléem, France |
| 20 Jan | | Born | Gregorio Hermida y Gamba (Camba) † | Santiago de Rubián | Bishop of Oviedo, Spain |
| 22 Jan | 41.4 | Appointed | Pierre Brigot, M.E.P. † | Coadjutor Vicar Apostolic of Siam, Thailand | Vicar Apostolic of Verapoly, India |
| 41.4 | Appointed | Pierre Brigot, M.E.P. † | Titular Bishop of Thabraca | Vicar Apostolic of Verapoly, India |
| 72.1 | Appointed | Domenico Silvio Passionei † | Cardinal, Librarian of the Vatican Library |
| 72.1 | Appointed | Domenico Silvio Passionei † | Archivist of the Vatican Secret Archives | Cardinal, Librarian of the Vatican Library |
| 23 Jan | | Born | Giovanni Battista Bussi † | Viterbo | Cardinal, Archbishop of Benevento, Italy |
| 28 Jan | | Born | Nicola Serarcangeli † | Camerino | Bishop of Fano, Italy |
| 29 Jan | 77.1 | Died | Amador Merino Malaguilla † | Bishop of Badajoz, Spain |
| 2 Feb | | Born | Nicolo Navoni † | Leapola del Marina | Archbishop of Cagliari, Italy |
| 6 Feb | 46.3 | Appointed | Johann Anton Freiherr von Federspiel † | Bishop of Chur, Switzerland |
| 8 Feb | | Born | Raffaele Longobardi † | Napoli | Bishop of Telese o Cerreto Sannita, Italy |
| 15 Feb | | Born | Ferdinand Hermann Maria Freiherr von Lüninck † | Gleuel | Bishop of Münster, Germany |
| 17 Feb | 58.4 | Appointed | Jacinto Aguado y Chacón † | Bishop of Arequipa, Peru | Bishop of Osma, Spain |
| 72.2 | Appointed | Domenico Silvio Passionei † | Cardinal-Priest of S. Prassede | Cardinal, Librarian of the Vatican Library |
| 61.9 | Appointed | Carlo della Torre Rezzonico † | Cardinal-Priest of S. Marco | Pope (Roma {Rome}, Italy) |
| 21 Feb | 48.6 | Appointed | James Grant † | Coadjutor Vicar Apostolic of Lowland District, Scotland, Great Britain | Vicar Apostolic |
| 48.6 | Appointed | James Grant † | Titular Bishop of Sinitis | Vicar Apostolic of Lowland District, Scotland, Great Britain |
| 28 Feb | | Born | Santiago Hernández Milanés † | Mieza, Spain | Bishop of Mérida, Venezuela |
| 1 Mar | | Born | Binkentios Coressi † | Chios | Vicar Apostolic of Constantinople, Turkey |
| 9 Mar | 60.1 | Died | Juan Ladrón de Guevara, O. Carm. † | Bishop of Barbastro, Spain |
| 11 Mar | | Born | Jean-Marie Cliquet de Fontenay † | Dunkerque | Archbishop of Bourges, France |
| 16 Mar | 26.3 | Ordained Priest | Cayetano Velozo, O.F.M. † | Priest of Order of Friars Minor | Bishop of São Tomé e Príncipe |
| 17 Mar | 47.1 | Confirmed | Adam Friedrich Reichsgraf von Seinsheim † | Bishop of Würzburg, Germany |
| 4 Apr | 46.6 | Appointed | Esteban Villanova Colomer † | Bishop of Tarazona, Spain |
| 11 Apr | | Born | Luigi Antonio Arrighi de Casanova † | Corte | Bishop of Acqui, Italy |
| 13 Apr | 55.9 | Ordained Bishop | Asensio Sales † | Bishop of Barcelona, Spain |
| 30 Apr | | Born | Charles Montault des Isles † | Loudun | Bishop of Angers, France |
| 4 May | | Born | Samuele Stefanowicz † | Lisiec | Archbishop of Lviv (Armenian), Ukraine |
| 9 May | | Born | Pierre-Marin Rouph de Varicourt † | Gex | Bishop of Orléans, France |
| 12 May | 52.4 | Appointed | Isidro Alfonso Cavanillas † | Bishop of Zamora, Spain |
| 16 May | 77.2 | Died | Zdenko Georg Chrzepíczky von Modliskovic † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 19 May | 25.9 | Ordained Priest | Antoni Onufry Okecki † | Priest | Bishop of Chelm, Poland |
| 24 May | 40.1 | Appointed | José Francis Laso de Castilla † | Bishop of Málaga, Spain |
| 25 May | 30.4 | Ordained Priest | Peter Michael Vigil Reichsgraf von Thun und Hohenstein † | Priest of Trento, Italy | Bishop |
| 28 May | 64.9 | Died | Pedro José Manuel (Pedro de la Trinidad) Martínez de Arizala, O.F.M. † | Archbishop of Manila, Philippines |
| 9 Jun | | Born | Primo Feliciano Marín y Porras, O.F.M. † | Tamarón, Spain | Bishop of Linares o Nueva León, Nuevo León, México |
| 15 Jun | 54.1 | Ordained Bishop | Johann Philipp Reichsgraf von Waldendorff † | Titular Archbishop of Patrae (Veters) | Archbishop of Trier, Germany |
| 22 Jun | 45.7 | Appointed | Jean-Baptiste de Belloy-Morangle † | Bishop of Marseille, France | Cardinal, Archbishop of Paris, France |
| 7 Jul | 55.4 | Resigned | Domenico Giordani † | Bishop of Calvi, Italy | Titular Patriarch of Antiochia {Antioch}, Syria |
| 9 Jul | 77.6 | Died | Francisco Pérez Prado y Cuesta † | Bishop of Teruel, Spain |
| 13 Jul | | Born | Buenaventura Moyano Rodríguez † | Serrada | Bishop of Palencia, Spain |
| 21 Jul | 46.7 | Confirmed | Johann Anton Freiherr von Federspiel † | Bishop of Chur, Switzerland |
| 59.6 | Appointed | Manuel Pérez Minayo † | Bishop of Badajoz, Spain |
| Appointed | Nicola Sanchez de Luna † | Archbishop of Chieti, Italy | Bishop of Nola, Italy |
| 68.6 | Died | Louis-François de Vivet de Montclus † | Bishop of Alès (Alais), France |
| 38.5 | Appointed | Tomasz Ignacy Zienkowicz † | Auxiliary Bishop of Vilnius, Lithuania | Auxiliary Bishop Emeritus |
| 38.5 | Appointed | Tomasz Ignacy Zienkowicz † | Titular Bishop of Areopolis | Auxiliary Bishop Emeritus of Vilnius, Lithuania |
| 26 Jul | 24.4 | Ordained Priest | Johann Nepomuk August Reichfreiherr Ungelter von Deisenhausen † | Priest of Augsburg, Germany | Auxiliary Bishop |
| 31 Jul | 53.5 | Resigned | José Alcaraz Belluga † | Bishop of Tarazona, Spain | Bishop Emeritus |
| 3 Aug | 59.5 | Appointed | Luis Fernández de Córdoba † | Cardinal, Archbishop of Toledo, Spain |
| 4 Aug | 45.8 | Confirmed | Jean-Baptiste de Belloy-Morangle † | Bishop of Marseille, France | Cardinal, Archbishop of Paris, France |
| 51.9 | Appointed | Nicolás Gil Martínez y Malo † | Bishop of Santa Marta, Colombia |
| 55.5 | Appointed | Domenico Giordani † | Titular Archbishop of Nicomedia | Titular Patriarch of Antiochia {Antioch}, Syria |
| 6 Aug | 65.3 | Died | Francisco Julián de Antolino † | Bishop of Caracas, Santiago de Venezuela |
| 10 Aug | | Born | Bartolomé Cienfuegos † | Parroquia de San Martín de Leiguarda | Bishop of Mondoñedo, Spain |
| 35.2 | Ordained Priest | Philipp Wirich Lorenz Graf von Daun zu Sassenheim und Callenborn † | Priest of Passau, Germany | Auxiliary Bishop |
| 11 Aug | | Born | Gyorgy Kurbély † | Tuzsina | Bishop of Veszprém, Hungary |
| Born | Giovanni Francesco Marazzani Visconti † | Piacenza | Cardinal, Priest of the Roman Curia - Other |
| 56.6 | Appointed | Manuel Quintano Bonifaz † | Apostolic Administrator of Toledo, Spain |
| 17 Aug | | Born | Claude-Madeleine de La Myre-Mory † | Paris | Bishop Emeritus of Le Mans, France |
| 24 Aug | 49.2 | Died | Joachim-Enjobert de Martiliat, M.E.P. † | Vicar Apostolic Emeritus of Yünnan, China |
| 67.1 | Appointed | Diego Rivera Higuera, O. de M. † | Bishop of Barbastro, Spain |
| 28 Aug | | Born | Cesare Brancadoro † | Fermo | Cardinal, Archbishop of Fermo, Italy |
| 1 Sep | 23.2 | Ordained Priest | Klemens August Maria Freiherr von Merle † | Priest of Köln {Cologne}, Germany | Auxiliary Bishop |
| 16 Sep | 54.0 | Appointed | Enrique Enríquez † | Cardinal, Official of the Secretariat of State |
| 71.1 | Died | Juan Eulate Santacruz † | Bishop of Málaga, Spain |
| 20 Sep | 23.1 | Ordained Priest | Johann Andreas Seelmann † | Priest of Bamberg, Germany | Auxiliary Bishop of Speyer, Germany |
| 21 Sep | | Born | Joaquín de Osés y Alzúa y Caparacio † | Galbarra, Spain | Archbishop of Santiago de Cuba |
| 22 Sep | | Appointed | Domenico Poltri † | Bishop of San Miniato, Italy |
| 24 Sep | 46.9 | Appointed | Francisco Javier Arriaza † | Bishop of Santander, Spain |
| 28 Sep | 59.7 | Ordained Bishop | Luis Fernández de Córdoba † | Cardinal, Archbishop of Toledo, Spain |
| 2 Oct | 43.7 | Ordained Bishop | Manuel de Alday y Axpée † | Bishop of Santiago de Chile |
| 5 Oct | 30.0 | Ordained Priest | José Francisco Miguel António de Mendonça Valdereis † | Priest | Cardinal, Patriarch of Lisboa, Portugal |
| 59.8 | Ordained Bishop | Manuel Pérez Minayo † | Bishop of Badajoz, Spain |
| 67.2 | Ordained Bishop | Diego Rivera Higuera, O. de M. † | Bishop of Barbastro, Spain |
| 26 Oct | | Born | Giovanni Battista Lambruschini † | Sestri Levante | Bishop of Orvieto, Italy |
| Born | Francesco Serlupi-Crescenzi † | Rome | Cardinal, Cardinal-Priest of S. Prassede |
| 28 Oct | | Born | Carlo Fioravanti † | Rome | Bishop of Rieti, Italy |
| 29 Oct | | Born | Rodrigo Antonio de Orellana, O. Praem. † | Medellín, Spain | Bishop of Avila, Spain |
| Born | Pedro Antonio Trevilla † | Carranza | Bishop of Córdoba, Spain |
| 9 Nov | 38.8 | Ordained Bishop | Tomasz Ignacy Zienkowicz † | Titular Bishop of Areopolis | Auxiliary Bishop Emeritus of Vilnius, Lithuania |
| 12 Nov | | Born | Ramón María Adurriaga Uribe † | Oñate | Bishop of Avila, Spain |
| 13 Nov | 49.4 | Ordained Bishop | James Grant † | Titular Bishop of Sinitis | Vicar Apostolic of Lowland District, Scotland, Great Britain |
| 16 Nov | | Born | Fabrizio Turriozzi † | Toscanella | Cardinal, Cardinal-Priest of S. Maria in Ara Coeli |
| 17 Nov | 48.1 | Appointed | Pascual López Estaún † | Bishop of Jaca, Spain | Bishop of Huesca, Spain |
| 54.7 | Appointed | Francisco Javier Pérez Baroja y Muro † | Bishop of Teruel, Spain |
| 42.8 | Appointed | Francisco de Solís Folch de Cardona † | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 55.9 | Appointed | Manuel Sosa Betencourt † | Bishop of Cartagena, Colombia | Bishop of Santafé en Nueva Granada, Colombia |
| 27 Nov | | Born | Agostino Albergotti † | Arezzo | Bishop of Arezzo, Italy |
| Born | Gregorio Ceruelo la Fuente † | Paredes de Nava | Bishop of Oviedo, Spain |
| 60.1 | Died | José Moreno Guriel, O.SS.T. † | Archbishop of Santo Domingo, Dominican Republic |
| 4 Dec | | Born | Francesco Guidobono Cavalchini † | Tortona | Cardinal, Priest of Roma {Rome}, Italy |
| 7 Dec | 22.9 | Ordained Priest | Joseph Adam Graf Arco † | Priest of Salzburg, Austria | Bishop of Seckau, Austria |
| 47.1 | Ordained Bishop | Francisco Javier Arriaza † | Bishop of Santander, Spain |
| 8 Dec | 42.3 | Succeeded | Pierre Brigot, M.E.P. † | Vicar Apostolic of Siam, Thailand | Vicar Apostolic of Verapoly, India |
| 70.2 | Died | Jean de Lolière-Puycontat, M.E.P. † | Vicar Apostolic of Siam, Thailand |