| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Feliciano Alonso, O.P. † | Soto de Valdeón, Spain | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| Died | Donato Anzani † | Bishop of Marsico Nuovo, Italy |
| Died | Nicolao Gaetano Aprosiio † | Bishop of Nebbio, France |
| Appointed | Antoine-François de Bliterswyck de Montcley † | Archbishop of Besançon, France |
| Died | Bernard d'Abbadie d'Arbocave † | Bishop of Acqs (Dax), France |
| 44.0 | Appointed | Louis-Guy de Guérapin de Vauréal † | Bishop of Rennes, France | Bishop Emeritus |
| 47.2 | Ordained Priest | Severino Antonio Missini † | Priest | Bishop of Borgo San Donnino, Italy |
| Born | Angel Mariano Moscoso Pérez y Oblitas † | Arequipa | Bishop of Córdoba (Tucumán), Argentina |
| 66.2 | Died | Miguel Esteban Pérez Estremera, O.S. † | Titular Bishop of Danaba |
| Appointed | Alessandro Puoti † | Bishop of Marsico Nuovo, Italy |
| Born | Hugues-François de Regnault-Bellescize † | Belcize | Bishop of Saint-Brieuc, France |
| Died | Jan Joachim Tarlo † | Bishop of Poznań, Poland |
| Died | Francesco Trevisani † | Bishop of Verona, Italy |
| Appointed | Marcin Załuski † | Auxiliary Bishop of Płock, Poland |
| Appointed | Marcin Załuski † | Titular Bishop of Draso | Auxiliary Bishop of Płock, Poland |
| 3 Jan | | Born | Joaquín Company Soler, O.F.M. † | Penáguila | Archbishop of Valencia, Spain |
| 51.3 | Succeeded | St. Pedro Sanz, O.P. † | Vicar Apostolic of Fo-Kien, China |
| 84.8 | Died | Magino Ventallol, O.P. † | Vicar Apostolic of Fo-Kien, China |
| 6 Jan | | Born | Raimundo Melchor Magi Gómez, O. de M. † | Vinaroz | Bishop of Guadix, Spain |
| 10 Jan | | Born | Battista Rivelli † | Vitolano | Archbishop of Brindisi, Italy |
| 13 Jan | | Born | Louis-François-Marc Hilaire de Conzié † | S. Martin du Mont | Bishop of Arras, France |
| 45.0 | Ordained Bishop | Charles-François Le Févre de Laubriéres † | Bishop of Soissons, France |
| 29 Jan | 41.5 | Appointed | Henri-Constance de Lort de Sérignan de Valras † | Bishop of Mâcon, France |
| 3 Feb | 47.1 | Succeeded | Jérôme-Louis de Foudras de Courcenay † | Bishop of Poitiers, France |
| 78.1 | Died | Jean-Claude de La Poype de Vertrieu † | Bishop of Poitiers, France |
| 5 Feb | | Born | Alessandro Maria Odoardi † | Ascoli della Marca | Bishop of Perugia, Italy |
| 10 Feb | 73.1 | Died | Rodrigo Marín Rubio † | Bishop of Jaén, Spain |
| 12 Feb | | Born | Joseph de Montfalcon du Cénole † | Saint-Offenge-Dessous | Archbishop of Tarentaise, France |
| 13 Feb | | Appointed | Juan Francisco Antonio de Escandón, C.R. † | Archbishop of Lima, Peru |
| 17 Feb | 63.9 | Ordained Bishop | Francisco Cepeda Guerrero † | Bishop of Segorbe, Spain |
| Born | Wenzel Kobaltz † | Wittichenau | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 46.1 | Ordained Bishop | François-André Roussel de Tilly † | Bishop of Orange, France | Bishop Emeritus |
| 23 Feb | | Born | Antonio José Salinas Moreno, O.F.M. † | Hellín | Bishop of Tortosa, Spain |
| 24 Feb | 78.4 | Died | Prospero Marefoschi † | Cardinal, Cardinal-Priest of S. Silvestro in Capite |
| 27 Feb | | Born | Jean-de-Dieu-Raymond de Boisgelin de Cucè † | Rennes | Cardinal, Archbishop of Tours, France |
| 3 Mar | 29.3 | Confirmed | Moritz Adolf Karl Herzog von Sachsen-Zeitz (Saský) † | Bishop of Hradec Králové, Czech Republic | Bishop of Litomĕrice, Czech Republic |
| 8 Mar | | Born | François Bécherel † | Saint-Hilaire-du-Harcôuët | Bishop of Valence, France |
| 23.0 | Ordained Priest | Joseph-Nicolas de Montenach † | Priest of Lausanne, Switzerland | Bishop |
| 18 Mar | | Born | Jean-Antoine de Castellane Saint-Mauris † | Saint-Paul-Trois-Chateaux | Bishop Emeritus of Lavaur, France |
| 29 Mar | | Born | Filippo de Aprile † | Gallipoli | Bishop of Melfi-Rapolla, Italy |
| 31 Mar | 47.2 | Appointed | Francesco Maria Alberici † | Bishop of Città della Pieve, Italy | Bishop of Foligno, Italy |
| 57.1 | Appointed | Antonio Maria Bacigalupi † | Bishop of Ventimiglia, Italy |
| 64.2 | Installed | Vincenzo Bichi † | Cardinal-Priest of S. Pietro in Montorio | Cardinal, Cardinal-Bishop of Frascati |
| 34.9 | Appointed | Francesco Scipione Maria Borghese † | Cardinal-Priest of S. Silvestro in Capite | Cardinal, Bishop of Porto e Santa Rufina, Italy |
| 45.1 | Confirmed | François-Hyacinthe de La Fruglaye de Kervers † | Bishop of Tréguier, France |
| 42.2 | Appointed | Jan Aleksander Lipski † | Bishop of Luceoria o Łuck, Ukraine | Cardinal, Bishop of Kraków, Poland |
| 54.2 | Appointed | Giovanni Battista Rondoni † | Bishop of Assisi, Italy |
| Apr | | Died | Juan Francisco Gómez Calleja † | Bishop of Popayán, Colombia |
| 11 Apr | | Died | Colombino Bassi, O.S.B. † | Bishop of Pistoia-Prato, Italy |
| 12 Apr | 59.3 | Appointed | Gaspard de La Valette de Thomas † | Bishop of Autun, France | Bishop Emeritus |
| 15 Apr | | Died | Jacques-Antoine Phélypeaux † | Bishop of Lodève, France |
| 18 Apr | 67.7 | Died | Franz Ludwig Pfalzgraf am Rhein zu Neuburg † | Archbishop-Elect of Mainz, Germany |
| 20 Apr | 43.8 | Ordained Bishop | Francesco Maria Garetto, O.F.M. † | Titular Bishop of Ephesus | Coadjutor Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 56.6 | Ordained Bishop | José Laso de la Vega y Cansino, O.F.M. † | Bishop of Santiago de Cuba | Bishop of Santiago de Cuba |
| 24 Apr | | Born | Alfonso Marcos Llanes † | Noreña | Archbishop of Sevilla {Seville}, Spain |
| 45.3 | Died | Charles-Louis-Auguste Le Tonnelier de Breteuil † | Bishop of Rennes, France |
| 30 Apr | | Died | Nicola Guerriero † | Bishop of Ravello-Scala, Italy |
| 4 May | 45.2 | Ordained Bishop | François-Hyacinthe de La Fruglaye de Kervers † | Bishop of Tréguier, France |
| 7 May | 76.3 | Confirmed | Daniel Joseph Mayer † | Archbishop of Praha {Prague}, Czech Republic |
| 36.6 | Confirmed | Claude de Rouvroy de Saint-Simon † | Bishop of Noyon, France | Bishop of Metz, France |
| Appointed | Matteo Trigona † | Bishop of Siracusa, Italy | Bishop Emeritus |
| 9 May | | Confirmed | Peter Mulligan, O.S.A. † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 23 May | 53.0 | Died | Winimar Knippschild, O.S.B. † | Auxiliary Bishop of Paderborn, Germany |
| Died | Raymond Recrosio, B. † | Bishop of Nice, France |
| 25 May | 35.0 | Ordained Bishop | Jean-Chrétien de Macheco de Prémeaux † | Bishop of Périgueux (Vesuna), France |
| 29 May | | Born | Vitale Giuseppe de' Buoi † | Bologna | Bishop of Faenza, Italy |
| 31 May | | Born | Hieronymus Joseph Franz de Paula Graf Colloredo von Wallsee und Mels † | Wien | Archbishop of Salzburg, Austria |
| 9 Jun | 40.7 | Appointed | Miguel Vicente Cebrián Agustín † | Bishop of Coria, Spain | Bishop of Córdoba, Spain |
| 66.6 | Appointed | Philipp Karl Reichsgraf von Eltz zu Kempenich † | Archbishop of Mainz, Germany |
| 47.6 | Appointed | Severino Antonio Missini † | Bishop of Borgo San Donnino, Italy |
| 52.6 | Appointed | Giacomo Oddi † | Titular Archbishop of Laodicea in Phrygia | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 50.7 | Appointed | Antonio Maria Santoro, O.M. † | Bishop of Ravello-Scala, Italy |
| 14 Jun | | Appointed | Jean-Georges de Souillac † | Bishop of Lodève, France |
| 15 Jun | | Born | Roberto Costaguti † | Livorno | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 36.7 | Ordained Bishop | Claude de Rouvroy de Saint-Simon † | Bishop of Noyon, France | Bishop of Metz, France |
| 17 Jun | 50.0 | Appointed | Franz Georg Reichsfgraf von Schönborn † | Bishop of Worms, Germany | Archbishop of Trier, Germany |
| 22 Jun | 47.7 | Ordained Bishop | Severino Antonio Missini † | Bishop of Borgo San Donnino, Italy |
| 24 Jun | 52.6 | Ordained Bishop | Giacomo Oddi † | Titular Archbishop of Laodicea in Phrygia | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 2 Jul | 63.6 | Died | Felicjan Konstanty Szaniawski † | Bishop of Kraków, Poland |
| 4 Jul | | Born | Klemens August Maria Freiherr von Merle † | Bonn | Auxiliary Bishop of Köln {Cologne}, Germany |
| 6 Jul | 50.5 | Ordained Bishop | José Antonio Gutiérrez y Ceballos † | Bishop of Córdoba (Tucumán), Argentina | Archbishop of Lima, Peru |
| 10 Jul | 33.0 | Appointed | Philipp Ludwig von Sinzendorf † | Cardinal, Bishop of Wrocław, Poland |
| 21 Jul | 36.3 | Appointed | Federico Alamanni † | Bishop of Pistoia-Prato, Italy |
| 51.2 | Appointed | Manuel Isidro Orozco Manrique de Lara † | Bishop of Jaén, Spain | Archbishop of Santiago de Compostela, Spain |
| 25 Jul | | Born | Johann Karl Reichsgraf von Hohenzollern-Hechingen † | Freiburg | Bishop of Warmia, Poland |
| 27 Jul | 42.0 | Ordained Bishop | Henri-Constance de Lort de Sérignan de Valras † | Bishop of Mâcon, France |
| Aug | | Died | Giambattista Isnardi † | Bishop of Mondovi, Italy |
| 7 Aug | | Born | Johann Andreas Seelmann † | Ebensfeld | Auxiliary Bishop of Speyer, Germany |
| 11 Aug | 59.6 | Confirmed | Gaspard de La Valette de Thomas † | Bishop of Autun, France | Bishop Emeritus |
| 50.2 | Confirmed | Franz Georg Reichsfgraf von Schönborn † | Bishop of Worms, Germany | Archbishop of Trier, Germany |
| 14 Aug | 54.7 | Appointed | Francisco Pérez Prado y Cuesta † | Bishop of Teruel, Spain |
| 24 Aug | 40.9 | Ordained Bishop | Miguel Vicente Cebrián Agustín † | Bishop of Coria, Spain | Bishop of Córdoba, Spain |
| 44.6 | Ordained Bishop | Louis-Guy de Guérapin de Vauréal † | Bishop of Rennes, France | Bishop Emeritus |
| 28 Aug | 59.8 | Died | Imre Csáky † | Cardinal, Archbishop of Kalocsa, Hungary |
| Sep | 44.7 | Installed | Louis-Guy de Guérapin de Vauréal † | Bishop of Rennes, France | Bishop Emeritus |
| 3 Sep | 66.9 | Confirmed | Philipp Karl Reichsgraf von Eltz zu Kempenich † | Archbishop of Mainz, Germany |
| Born | Eustache Federl † | Munich, Germany | Vicar Apostolic of Malabar, India |
| 46.3 | Appointed | José Francisco de San Buenaventura Martínez de Tejada y Díez de Velasco, O.F.M. † | Auxiliary Bishop of Santiago de Cuba | Bishop of Guadalajara, Jalisco, México |
| 46.3 | Appointed | José Francisco de San Buenaventura Martínez de Tejada y Díez de Velasco, O.F.M. † | Titular Bishop of Trecalae | Bishop of Guadalajara, Jalisco, México |
| 33.1 | Confirmed | Philipp Ludwig von Sinzendorf † | Cardinal, Bishop of Wrocław, Poland |
| 7 Sep | 76.6 | Installed | Daniel Joseph Mayer † | Archbishop of Praha {Prague}, Czech Republic |
| Ordained Bishop | Marcin Załuski † | Titular Bishop of Draso | Auxiliary Bishop of Płock, Poland |
| 10 Sep | | Born | Giuseppe Corrado Panzini † | Molfetta | Bishop of Ugento, Italy |
| 18 Sep | | Born | Jacinto Carlos da Silveira † | Evora, Portugal | Bishop Emeritus of São Luís do Maranhão, Brazil |
| 20 Sep | 24.1 | Ordained Priest | João Evangelista Pereira da Silva, T.O.R. † | Priest of Third Order Regular of St. Francis of Penance | Bishop of Belém do Pará, Brazil |
| 24 Sep | 59.7 | Ordained Bishop | Gaspard de La Valette de Thomas † | Bishop of Autun, France | Bishop Emeritus |
| 1 Oct | 36.7 | Elevated to Cardinal | Troiano Acquaviva d’Aragona † | Cardinal, Archbishop of Monreale, Italy |
| 37.5 | Appointed | Federico Marcello Lante Montefeltro Della Rovere † | Titular Archbishop of Petra in Palaestina | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 54.4 | Elevated to Cardinal | Agapito Mosca † | Cardinal, Cardinal-Deacon of S. Agata de’ Goti |
| 64.4 | Appointed | José Platas † | Auxiliary Bishop of Santiago de Compostela, Spain |
| 64.4 | Appointed | José Platas † | Titular Bishop of Adramyttium | Auxiliary Bishop of Santiago de Compostela, Spain |
| 5 Oct | | Born | Pedro Nolasco Mora Mora, O. de M. † | Barcelona | Bishop of Solsona, Spain |
| 51.4 | Ordained Bishop | Manuel Isidro Orozco Manrique de Lara † | Bishop of Jaén, Spain | Archbishop of Santiago de Compostela, Spain |
| 19 Oct | 37.5 | Ordained Bishop | Federico Marcello Lante Montefeltro Della Rovere † | Titular Archbishop of Petra in Palaestina | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| Ordained Bishop | Pedro Alcántara de la Santísima Trinidad, O.C.D. † | Titular Bishop of Areopolis | Vicar Apostolic of Foreign Vicariate |
| 20 Oct | | Born | Antônio de Pádua e Belas, O.F.M. † | Bellas, Portugal | Bishop Emeritus of São Luís do Maranhão, Brazil |
| 23 Oct | | Born | Nicola Buschi † | Cesena | Bishop of Ferentino, Italy |
| 28 Oct | | Born | Simón Casaviella López † | Jaca | Bishop of Tudela, Spain |
| 4 Nov | 58.1 | Resigned | Giovanni Antonio Guadagni, O.C.D. † | Bishop of Arezzo, Italy | Cardinal, Bishop of Porto e Santa Rufina, Italy |
| 6 Nov | 33.3 | Installed | Philipp Ludwig von Sinzendorf † | Cardinal, Bishop of Wrocław, Poland |
| 11 Nov | | Born | Francesco Luserna Rorengo di Rorà † | Campiglione | Archbishop of Torino {Turin}, Italy |
| 16 Nov | 67.1 | Ordained Bishop | Philipp Karl Reichsgraf von Eltz zu Kempenich † | Archbishop of Mainz, Germany |
| 17 Nov | 36.8 | Installed | Troiano Acquaviva d’Aragona † | Cardinal-Priest of Ss. Quirico e Giulitta | Cardinal, Archbishop of Monreale, Italy |
| 81.6 | Resigned | Giuseppe Renato Imperiali † | Cardinal-Priest of S. Giorgio in Velabro | Cardinal, Cardinal-Priest of S. Lorenzo in Lucina |
| 54.6 | Installed | Agapito Mosca † | Cardinal-Deacon of S. Giorgio in Velabro | Cardinal, Cardinal-Deacon of S. Agata de’ Goti |
| 50.8 | Appointed | Domenico Antonio Peronaci † | Bishop of Umbriatico (Umbriaticum), Italy |
| 20 Nov | | Born | Martin Takáts † | Gyöngös | Auxiliary Bishop of Kalocsa, Hungary |
| 28 Nov | 68.2 | Died | Henri-Charles du Camboust de Coislin † | Bishop of Metz, France |
| 30 Nov | 27.4 | Ordained Priest | Giovanni Battista D'Orliè De Saint Innocent, C.R.S.A. † | Priest of Confederation of Canons Regular of St. Augustine | Bishop of Pinerolo, Italy |
| 6 Dec | 22.9 | Ordained Priest | Simon Ambros Stock † | Priest of Wien {Vienna}, Austria | Titular Bishop of the Titular See |
| 7 Dec | 55.0 | Ordained Bishop | Francisco Pérez Prado y Cuesta † | Bishop of Teruel, Spain |
| 64.6 | Ordained Bishop | José Platas † | Titular Bishop of Adramyttium | Auxiliary Bishop of Santiago de Compostela, Spain |
| 19 Dec | 64.2 | Appointed | Carlo Cosenza † | Bishop of Vico Equense, Italy |
| 56.4 | Appointed | Diego Fermín de Vergara, O.S.A. † | Bishop of Popayán, Colombia | Archbishop of Santafé en Nueva Granada, Colombia |
| 43.0 | Appointed | Jan Aleksander Lipski † | Cardinal, Bishop of Kraków, Poland |
| 20 Dec | 22.9 | Ordained Priest | Giovanni Maria Castelvetri † | Priest | Bishop of Reggio Emilia, Italy |
| Born | Tommaso Francone, C.R. † | Ripafrancone | Archbishop of Manfredonia, Italy |
| 25 Dec | 74.9 | Died | Francisco Ochoa Mendarozqueta y Arzamendi † | Bishop of Palencia, Spain |
| 28 Dec | 50.9 | Ordained Bishop | Domenico Antonio Peronaci † | Bishop of Umbriatico (Umbriaticum), Italy |
| 30 Dec | 64.8 | Died | Cornelio Bentivoglio † | Cardinal, Titular Archbishop of the Titular See |