| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Jean-Marie de Catelan † | | Bishop of Rieux, France |
| Appointed | Gregorio Compagni † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| Born | Jean-François de La Cropte de Bourzac † | Paris | Bishop of Noyon, France |
| Appointed | Lorenzo Fabbri (Fabri), O.F.M. Conv. † | Bishop of Fossombrone, Italy |
| Appointed | Antonio Grassi † | Bishop of Chioggia, Italy |
| Ordained Bishop | Antonio Grassi † | Bishop of Chioggia, Italy |
| Appointed | Giacinto Camillo Maradei † | Bishop of Policastro, Italy |
| Appointed | Giovan Andrea Monreale † | Archbishop of Reggio Calabria, Italy |
| Born | José Vidal de Moctezuma y Tobar, O. de M. † | | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| Born | Ignacio Padilla Estrada (Guardiola), O.S.A. † | México | Bishop of Yucatán (Mérida), Yucatán, México |
| Appointed | Fabrizio Pignatelli † | Bishop of Lecce, Italy |
| Appointed | Giuseppe Pignatelli † | Bishop of Cava, Italy |
| 15.8 | Professed | Angelo Maria Quirini (Querini), O.S.B. † | Member of Order of Saint Benedict | Cardinal, Bishop of Brescia, Italy |
| Appointed | Vincenzo Maria de Rossi † | Bishop of Penne-Atri, Italy |
| 49.0 | Appointed | João de Sousa † | Archbishop of Braga, Portugal | Archbishop of Lisboa, Portugal |
| Born | Nicholas Sweetman † | | Bishop of Ferns, Ireland |
| 66.0 | Died | Stanisław Jacek Święcicki † | Bishop of Chelm, Poland |
| Born | Bernardo de Ustariz, O.P. † | Arandiga | Bishop-Elect of Nueva Segovia, Philippines |
| Appointed | Marcin Załuski † | Auxiliary Bishop of Płock, Poland |
| Appointed | Marcin Załuski † | Titular Bishop of Hierapolis in Isauria | Auxiliary Bishop of Płock, Poland |
| 2 Jan | 45.3 | Appointed | Ferdinando d'Adda † | Cardinal-Priest of S. Balbina | Cardinal, Cardinal-Bishop of Albano |
| 64.3 | Installed | Enrico Noris, O.S.A. † | Cardinal-Priest of S. Agostino | Cardinal, Librarian of the Vatican Library |
| 54.9 | Appointed | Taddeo Luigi dal Verme † | Bishop of Imola, Italy | Cardinal, Archbishop of Ferrara, Italy |
| 54.9 | Appointed | Taddeo Luigi dal Verme † | Cardinal-Priest | Cardinal, Archbishop of Ferrara, Italy |
| 11 Jan | | Born | Giuseppe Ruffo † | | Archbishop of Capua, Italy |
| 13 Jan | 44.7 | Appointed | Giuseppe Archinto † | Apostolic Nuncio to Spain | Cardinal, Archbishop of Milano {Milan}, Italy |
| 16 Jan | | Born | Valerian Rist, O.F.M. † | Neuburg, Germany | Coadjutor Vicar Apostolic of Cochin {Cocincina}, Viêt Nam |
| 18 Jan | | Born | Lodovico Calini † | Calino | Cardinal, Bishop of Crema, Italy |
| 22 Jan | | Born | Luis Fernández de Córdoba † | Montilla | Cardinal, Archbishop of Toledo, Spain |
| 23 Jan | 22.1 | Professed | José de Fialho, O. Cist. † | Member of Order of Cistercians | Bishop of Guarda, Portugal |
| 30 Jan | 46.3 | Confirmed | Johann Franz Freiherr von Eckher von Kapfing und Liechteneck † | Bishop of Freising, Germany |
| 8 Feb | | Born | Juan José de Eguiara y Eguren † | Mexico | Bishop-Elect Emeritus of Yucatán (Mérida), Yucatán, México |
| 12 Feb | 37.1 | Ordained Bishop | Jean-Hervé Bazan de Flamanville † | Bishop of Perpignan-Elne, France |
| 35.3 | Appointed | Gianantonio Davia † | Apostolic Nuncio to Poland | Cardinal, Bishop Emeritus of Rimini, Italy |
| 14 Feb | 41.8 | Ordained Bishop | Joseph-Ignace de Foresta † | Bishop of Apt, France | Bishop Emeritus |
| 17 Feb | | Born | Joseph Benedikt Graf von Rost † | Vils | Bishop of Chur, Switzerland |
| 20 Feb | 80.4 | Appointed | Giambattista Spínola (Sr.) † | Cardinal-Priest of S. Agnese fuori le mura | Cardinal, Archbishop Emeritus of Genova, Italy |
| 24 Feb | 44.9 | Appointed | Fabrizio Paolucci † | Apostolic Nuncio to Germany | Cardinal, Prefect of the Roman Curia - Other |
| 26 Feb | | Born | Anton Felix Ciurletti † | Trento | Auxiliary Bishop of Salzburg, Austria |
| 1 Mar | 28.7 | Appointed | Charles-Joachim Colbert de Croissy † | Bishop of Montpellier, France |
| 8 Mar | 57.7 | Appointed | Johann Michael Reichsgraf von Spaur und Valör † | Bishop of Trento, Italy |
| 16 Mar | 58.8 | Died | Louis Laneau, M.E.P. † | Vicar Apostolic of Siam, Thailand |
| 19 Mar | 59.2 | Appointed | Giovanni Battista Giberti † | Bishop of Fano, Italy |
| 27 Mar | | Born | Johann Rudolf Graf von Sporck † | Praha | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 2 Apr | 51.4 | Confirmed | Franz Ferdinand Freiherr von Rummel † | Bishop of Foreign Diocese | Bishop of Wien, Austria |
| 3 Apr | | Born | Deigo Bernardo de Peredo y Navarrete † | León | Bishop of Yucatán (Mérida), Yucatán, México |
| 18 Apr | | Appointed | Antonio de Arrigaga y Agüero, O.S.A. † | Bishop of Yucatán (Mérida), Yucatán, México |
| 22 Apr | | Born | Ludwig Hatteisen, O.S.B. † | Brakel | Auxiliary Bishop of Hildesheim, Germany |
| 10 May | | Born | Leopold Maria Joseph Reichsgraf von Spaur † | Innsbruck | Bishop of Brixen {Bressanone}, Italy |
| 14 May | | Born | Leopold Friedrich Reichsgraf von Egkh und Hungersbach † | Hamburg | Bishop of Olomouc, Czech Republic |
| 20 May | 38.9 | Ordained Bishop | Gaston-Jean-Baptiste-Louis de Noailles † | Bishop of Chalons-sur-Marne, France |
| 21 May | 46.1 | Installed | Sebastiano Antonio Tanara † | Cardinal-Priest of Ss. Quattro Coronati | Cardinal, Titular Archbishop of Damascus |
| 16 Jun | 23.9 | Ordained Priest | Johann Baptist Haus † | Priest of Basel, Switzerland | Auxiliary Bishop |
| 24.3 | Ordained Priest | Luis Simões Brandão † | Priest | Bishop Emeritus of Angola e Congo, Angola |
| 18 Jun | 80.2 | Appointed | Wojciech Izdebski † | Auxiliary Bishop of Vilnius, Lithuania |
| 33.6 | Appointed | Louis François Rossius de Liboy † | Auxiliary Bishop of Liège, Belgium |
| 29.7 | Appointed | Christian August von Sachsen-Zeitz † | Bishop of Győr, Hungary | Cardinal, Archbishop of Esztergom, Hungary |
| 28 Jun | 25.9 | Ordained Priest | Santiago Pinaque, O. Carm. † | Priest of Order of Our Lady of Mt. Carmel | Bishop of Gaeta, Italy |
| 1 Jul | | Born | Buenaventura Blanco y Elguero (Helguero) † | Valladolid, Spain | Bishop of Antequera, Oaxaca, México |
| 46.7 | Ordained Bishop | Johann Franz Freiherr von Eckher von Kapfing und Liechteneck † | Bishop of Freising, Germany |
| 49.5 | Ordained Bishop | Jean Soanen † | Bishop of Senez, France |
| 28 Jul | 38.6 | Died | Gerolamo Ubertino Provana, C.R. † | Bishop of Alba (Pompea), Italy |
| 29 Jul | 51.8 | Ordained Bishop | Franz Ferdinand Freiherr von Rummel † | Bishop of Foreign Diocese | Bishop of Wien, Austria |
| 3 Aug | | Born | Ferdinando Maria de Rossi † | Cortona | Cardinal, Prefect of the Congregation of the Council |
| 19 Aug | 43.8 | Ordained Bishop | Diego Camacho y Ávila † | Archbishop of Manila, Philippines | Bishop of Guadalajara, Jalisco, México |
| 9 Sep | | Born | Bartolomé Sarmentero, O.F.M. † | Vega de Aldetronco | Bishop of Vic, Spain |
| 17 Sep | | Died | Charles de Pradel † | Bishop of Montpellier, France |
| 33.9 | Ordained Bishop | Louis François Rossius de Liboy † | Auxiliary Bishop of Liège, Belgium |
| 22 Sep | 27.3 | Ordained Priest | Johann Joseph Ignaz Freyschlag von Schmidenthal † | Priest of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany | Prefect |
| 23 Sep | | Born | Jacinto Aguado y Chacón † | Granada, Spain | Bishop of Osma, Spain |
| 24 Sep | 58.2 | Confirmed | Johann Michael Reichsgraf von Spaur und Valör † | Bishop of Trento, Italy |
| 27 Sep | | Born | St. Alfonso Maria de' Liguori † | Marianella di Napoli | Bishop Emeritus of Sant’Agata de’ Goti, Italy |
| 30 Sep | | Ordained Bishop | Marcin Załuski † | Titular Bishop of Hierapolis in Isauria | Auxiliary Bishop of Płock, Poland |
| 14 Oct | 36.8 | Ordained Bishop | François-Louis de Clermont-Tonnerre † | Bishop of Langres, France |
| 17 Oct | | Born | Francisco Zarceño Martínez, O.SS.T. † | Colmenar de Oreja | Bishop of Solsona, Spain |
| 19 Oct | 85.8 | Died | Johann Freiherr von Goess † | Cardinal, Bishop of Gurk, Austria |
| 58.3 | Ordained Bishop | Johann Michael Reichsgraf von Spaur und Valör † | Bishop of Trento, Italy |
| 20 Oct | 45.4 | Appointed | Edme Bélot, M.E.P. † | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam | Vicar Apostolic |
| 45.4 | Appointed | Edme Bélot, M.E.P. † | Titular Bishop of Basilinopolis | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 41.8 | Appointed | Raimondo Lezzoli, O.P. † | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 41.8 | Appointed | Raimondo Lezzoli, O.P. † | Titular Bishop of Olena | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 41.8 | Appointed | Arthus de Lionne † | Titular Bishop of Rosalia | Vicar Apostolic of Se-Ciuen, China |
| 44.8 | Appointed | Charles Maigrot, M.E.P. † | Vicar Apostolic of Fo-Kien, China | Vicar Apostolic Emeritus |
| 22 Oct | 41.8 | Appointed | Arthus de Lionne † | Vicar Apostolic of Se-Ciuen, China |
| 44.8 | Appointed | Charles Maigrot, M.E.P. † | Titular Bishop of Comana Pontica | Vicar Apostolic Emeritus of Fo-Kien, China |
| 4 Nov | 70.8 | Died | Friedrich von Tietzen † | Auxiliary Bishop of Hildesheim, Germany |
| 6 Nov | | Died | Juan Aparicio Navarro † | Bishop of León, Spain |
| 10 Nov | 65.5 | Died | Isidoro Sariñana y Medina Cuenca † | Bishop of Antequera, Oaxaca, México |
| 16 Nov | 81.1 | Died | Giambattista Zeccadoro † | Bishop of Fossombrone, Italy |
| 3 Dec | 61.2 | Appointed | Godefroid-Udalric de la Margelle † | Auxiliary Bishop of Köln {Cologne}, Germany |
| 61.2 | Appointed | Godefroid-Udalric de la Margelle † | Titular Bishop of Nicopolis in Armenia | Auxiliary Bishop of Köln {Cologne}, Germany |
| 57.8 | Appointed | Ferdinand Schröffel † | Auxiliary Bishop of Olomouc, Czech Republic |
| 57.8 | Appointed | Ferdinand Schröffel † | Titular Bishop of Sebaste in Cilicia | Auxiliary Bishop of Olomouc, Czech Republic |
| 6 Dec | | Born | Pedro Zamorana Romezal † | La Guardia, Spain | Bishop of Durango, Durango, México |
| 17 Dec | 43.9 | Appointed | Timóteo do Sacramento, O.S.P. † | Bishop of São Luís do Maranhão, Brazil |
| 22 Dec | 25.8 | Ordained Priest | Kaspas Ignaz Freiherr von Künigl zu Ehrenburg † | Priest of Brixen {Bressanone}, Italy | Bishop |
| 28.2 | Ordained Priest | Francesco Maria Tansj (Tansi) † | Priest | Bishop of Teramo, Italy |
| 53.0 | Died | Sigmund Ignaz Reichgraf von Wolkenstein-Trostburg † | Bishop of Chiemsee, Germany |