| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Appointed | François de Bonnal † | Bishop of Clermont, France |
| 42.0 | Appointed | Pierre-Marie-Madeleine Cortois de Balore † | Bishop of Alès (Alais), France | Bishop of Nimes, France |
| 59.0 | Appointed | Joseph-Dominique de Cheylus † | Bishop of Bayeux, France |
| 35.7 | Appointed | François Citadella † | Bishop of Acci and Mariana, France |
| 53.0 | Appointed | Giovanni Benedetto M. Civran † | Bishop of Chioggia, Italy |
| 55.0 | Appointed | Claude-Marc-Antoine d'Apchon † | Bishop of Auch, France |
| Appointed | Francisco Ramón Herboso y Figueroa † | Archbishop of La Plata o Charcas, Bolivia |
| Born | José Hurtado Mendoza † | | Auxiliary Bishop-Elect of Córdoba (Tucumán), Argentina |
| Born | Juan Manuel de Irrizarri y Peralta † | Habana, Cuba | Auxiliary Bishop of México, Federal District |
| 19.0 | Ordained Priest | Arnaud-Ferdinand de La Porte † | Priest | Bishop of Carcassonne, France |
| 34.0 | Appointed | Alexandre-François-Amédée-Adonis-Louis-Joseph de Lauzières de Thémines † | Bishop of Blois, France |
| 46.9 | Appointed | Louis-Marie de Nicolay † | Bishop of Cahors, France |
| 58.7 | Ordained Bishop | Francisco (Martinez) Polanco (López de Lorena) † | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| Born | José Manuel Eufrasio de Quiroga Sarmiento † | San Juan de Cuyo | Bishop of San Juan de Cuyo, Argentina |
| Died | Francesco Antonio Rocco † | Bishop of Capri, Italy |
| 52.0 | Ordained Bishop | Mateo Joaquin Rubio de Arevalo † | Bishop of Cebu, Philippines |
| Born | Carlos de São José e Souza, O.C.D. † | Recife | Bishop of São Luís do Maranhão, Brazil |
| 47.0 | Appointed | Stefano Domenico Sceriman † | Bishop of Concordia, Italy | Bishop of Chioggia, Italy |
| Died | Giuseppe Sparano † | Archbishop of Acerenza e Matera, Italy |
| 36.6 | Appointed | John Thomas Troy, O.P. † | Bishop of Ossory, Ireland | Archbishop of Dublin, Ireland |
| 62.0 | Appointed | Francesco Zunica † | Archbishop of Acerenza e Matera, Italy |
| 14 Jan | 52.4 | Ordained Bishop | Esteban Lorenzo de Tristán y Esmenota † | Bishop of León en Nicaragua | Bishop of Guadalajara, Jalisco, México |
| 36.6 | Ordained Bishop | Jean-Denis de Vienne † | Auxiliary Bishop of Lyon, France |
| 20 Jan | 62.6 | Died | Francisco Garrido de la Vega † | Bishop of Córdoba, Spain |
| 21 Jan | 22.3 | Ordained Priest | Nikodem Puzyna † | Priest | Auxiliary Bishop of Vilnius, Lithuania |
| 29 Jan | 58.8 | Appointed | Antonio Jorge y Galván † | Archbishop of Granada, Spain |
| 39.4 | Appointed | Alessandro Garimberti † | Bishop of Borgo San Donnino, Italy |
| 54.1 | Appointed | Andrea Gioannetti, O.S.B. † | Titular Bishop of Hemeria | Cardinal, Archbishop of Bologna, Italy |
| 40.0 | Confirmed | Marie-Charles-Isidore de Mercy † | Bishop of Luçon, France | Archbishop of Bourges, France |
| 51.1 | Appointed | Ermenold Piesport, O.S.B. † | Auxiliary Bishop of Fulda, Germany |
| 51.1 | Appointed | Ermenold Piesport, O.S.B. † | Titular Bishop of Capharnaum | Auxiliary Bishop of Fulda, Germany |
| 51.8 | Appointed | Carlo Rezzonico, Jr. † | Bishop of Porto e Santa Rufina, Italy | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 51.8 | Appointed | Carlo Rezzonico, Jr. † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 30 Jan | 30.7 | Appointed | Wilhelm Florentin Fürst von Salm-Salm † | Bishop of Tournai {Doornik}, Belgium | Archbishop of Praha {Prague}, Czech Republic |
| Feb | | Appointed | Serafino Filangeri † | Archbishop of Napoli {Naples}, Italy |
| 89.2 | Died | Tomás del Valle, O.P. † | Bishop of Cádiz, Spain |
| 4 Feb | 39.4 | Ordained Bishop | Alessandro Garimberti † | Bishop of Borgo San Donnino, Italy |
| 54.1 | Ordained Bishop | Andrea Gioannetti, O.S.B. † | Titular Bishop of Hemeria | Cardinal, Archbishop of Bologna, Italy |
| Born | Ignacy Ludwik Pawlowski † | | Archbishop of Mohilev, Belarus |
| 9 Feb | | Born | Pablo Jesús Corcuera Caserta † | Cádiz | Bishop of Vic, Spain |
| 11 Feb | | Born | Manuel Villar † | Pamplona | Bishop of Lérida, Spain |
| 18 Feb | | Born | Jean-François de Hercé † | Mayenne | Bishop Emeritus of Nantes, France |
| 40.0 | Ordained Bishop | Marie-Charles-Isidore de Mercy † | Bishop of Luçon, France | Archbishop of Bourges, France |
| 29 Feb | | Born | Giulio de Tommasi † | Capua | Bishop of San Severo, Italy |
| 3 Mar | 35.9 | Appointed | Jacques-Joseph-François de Vogüé † | Bishop of Dijon, France |
| 48.8 | Ordained Bishop | Friedrich Ludwig Franz Reichsfreiherr von Wangen zu Geroldseck † | Bishop of Basel, Switzerland |
| 5 Mar | | Born | Pablo García Abella, C.O. † | Madrid | Archbishop of Valencia, Spain |
| 13 Mar | 50.3 | Appointed | Karol Salbeck † | Bishop of Spiš, Slovakia |
| 16 Mar | 50.4 | Appointed | Giuseppe Garampi † | Apostolic Nuncio to Austria | Cardinal, Bishop of Montefiascone, Italy |
| 17 Mar | 51.3 | Ordained Bishop | Ermenold Piesport, O.S.B. † | Titular Bishop of Capharnaum | Auxiliary Bishop of Fulda, Germany |
| 21 Mar | 63.1 | Died | Francisco de Solís Folch de Cardona † | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 25 Mar | 68.2 | Died | Jean-Louis du Buisson de Beauteville † | Bishop of Alès (Alais), France |
| Apr | | Died | Patrick Robert Kirwan † | Bishop of Achonry, Ireland |
| 6 Apr | 23.5 | Ordained Priest | Hieronim Stojnowski (Stroynowski) † | Priest | Bishop of Vilnius, Lithuania |
| 11 Apr | | Born | Matthäus Kutschank † | Nucknitz | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 12 Apr | | Born | Víctor Damián Sáez y Sánchez Mayor † | Budia | Bishop of Tortosa, Spain |
| 13 Apr | | Born | Giuseppe Pecci † | Gubbio | Cardinal, Bishop of Gubbio, Italy |
| 15 Apr | 33.6 | Appointed | Francisco Mateo Aguiriano Gómez † | Auxiliary Bishop of Toledo, Spain | Bishop of Calahorra y La Calzada, Spain |
| 33.6 | Appointed | Francisco Mateo Aguiriano Gómez † | Titular Bishop of Thagaste | Bishop of Calahorra y La Calzada, Spain |
| 68.5 | Appointed | Pascual López Estaún † | Bishop of Huesca, Spain |
| 40.3 | Appointed | Pedro Benito Antonio Quevedo y Quintano † | Cardinal, Bishop of Orense, Spain |
| 58.3 | Confirmed | Maximilian Augustinus Christoph Reichsfreiherr von Rodt † | Bishop of Konstanz {Constance}, Germany |
| 50.5 | Elevated to Cardinal | Luigi Valenti Gonzaga † | In Pectore | Cardinal, Librarian of the Vatican Library |
| 5 May | 59.4 | Died | Johann Andreas Kaiser † | Bishop of Hradec Králové, Czech Republic |
| 7 May | 67.7 | Died | Luis Fernando de Hoyos y Mier † | Bishop of Michoacán, Michoacán, México |
| 8 May | 56.9 | Died | José Laplana Castellón † | Bishop of Tarazona, Spain |
| 12 May | 55.6 | Ordained Bishop | Martin Nugk von Lichtenhoff † | Titular Bishop of Cisamus | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 16 May | | Born | Luigi Emmanuele Nicolo Lambruschini, B. † | Sestri Levante | Cardinal, Prefect of the Congregation of Rites |
| 20 May | 49.3 | Appointed | Jozef Batthyány † | Cardinal, Archbishop of Esztergom, Hungary |
| 50.7 | Appointed | Guido Calcagnini † | Archbishop (Personal Title) of Osimo e Cingoli, Italy | Cardinal, Bishop |
| 50.7 | Elevated to Cardinal | Guido Calcagnini † | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 61.4 | Appointed | Francisco Javier Delgado Benegas † | Archbishop of Sevilla {Seville}, Spain | Cardinal, Patriarch of West Indies, Antilles |
| 31.0 | Confirmed | Wilhelm Florentin Fürst von Salm-Salm † | Bishop of Tournai {Doornik}, Belgium | Archbishop of Praha {Prague}, Czech Republic |
| 50.6 | Appointed | Giuseppe Garampi † | Archbishop (Personal Title) of Montefiascone, Italy | Cardinal, Bishop |
| 49.4 | Appointed | Federico Maria Giovanelli † | Patriarch of Venezia {Venice}, Italy |
| Born | Joseph Prinz von Hohenzollern-Hechingen † | Troppau | Bishop of Warmia, Poland |
| 50.6 | Elevated to Cardinal | Luigi Valenti Gonzaga † | Cardinal, Librarian of the Vatican Library |
| 36.1 | Confirmed | Jacques-Joseph-François de Vogüé † | Bishop of Dijon, France |
| 26 May | 33.7 | Ordained Bishop | Francisco Mateo Aguiriano Gómez † | Titular Bishop of Thagaste | Bishop of Calahorra y La Calzada, Spain |
| 27 May | | Born | Jan Marceli Gutkowski † | Plock | Bishop Emeritus of Podlachia o Janów, Poland |
| 29 May | 51.5 | Appointed | Peter Michael Vigil Reichsgraf von Thun und Hohenstein † | Bishop of Trento, Italy |
| 1 Jun | 63.5 | Ordained Deacon | Paolo Francesco Antamori † | Deacon of Roma {Rome}, Italy | Cardinal, Bishop of Orvieto, Italy |
| 23.1 | Ordained Priest | Michele Belli † | Priest of Roma {Rome}, Italy | Titular Archbishop of Nazianzus |
| 28.6 | Ordained Priest | Francsco Antonio Javier de Gardoqui Arriquíbar † | Cardinal, Priest of Palencia, Spain |
| 27.9 | Ordained Priest | László Koszeghy von Romete † | Priest of Society of Jesus | Bishop of Csanád, Hungary |
| 23.4 | Ordained Priest | Ján Baptist Richolosky † | Priest | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 24.1 | Ordained Priest | Claude-François de Thiollaz † | Priest of Annecy, France | Bishop |
| 2 Jun | 56.0 | Installed | Agustín de Alvarado y Castillo † | Archbishop of Santafé en Nueva Granada, Colombia | Bishop of Ciudad Rodrigo, Spain |
| 9 Jun | 36.2 | Ordained Bishop | Jacques-Joseph-François de Vogüé † | Bishop of Dijon, France |
| 13 Jun | 69.8 | Died | Cristoforo Sizzo de Noris † | Bishop of Trento, Italy |
| 20 Jun | | Born | Luigi Del Drago † | Rome | Cardinal, Cardinal-Priest of S. Lorenzo in Panisperna |
| 22 Jun | | Appointed | Philip Phillips † | Bishop of Achonry, Ireland | Archbishop of Tuam, Ireland |
| 24 Jun | 24.7 | Ordained Priest | Georg Franz Lock † | Priest of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany | Prefect |
| 26 Jun | | Born | Giacomo Monico † | Riese | Cardinal, Patriarch of Venezia {Venice}, Italy |
| 28 Jun | | Born | Jakob Brand † | Mespelbrunn | Bishop of Limburg, Germany |
| 29 Jun | 54.3 | Appointed | Juan Molina Lario y Navarro † | Bishop of Málaga, Spain |
| 30 Jun | 53.1 | Ordained Bishop | Antonio Caballero y Góngora † | Bishop of Yucatán (Mérida), Yucatán, México | Bishop of Córdoba, Spain |
| 42.5 | Ordained Bishop | Pierre-Marie-Madeleine Cortois de Balore † | Bishop of Alès (Alais), France | Bishop of Nimes, France |
| 1 Jul | | Born | Antonio Burbano † | Pasto | Auxiliary Bishop of Popayán, Colombia |
| 13 Jul | 42.3 | Professed | Nicolas Champenois, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Verapoly, India |
| 14 Jul | 31.2 | Ordained Bishop | Wilhelm Florentin Fürst von Salm-Salm † | Bishop of Tournai {Doornik}, Belgium | Archbishop of Praha {Prague}, Czech Republic |
| 40.5 | Ordained Bishop | Pedro Benito Antonio Quevedo y Quintano † | Cardinal, Bishop of Orense, Spain |
| 15 Jul | 43.5 | Appointed | Joseph Adam Graf Arco † | Bishop of Hradec Králové, Czech Republic | Bishop of Seckau, Austria |
| 50.8 | Installed | Guido Calcagnini † | Cardinal-Priest of S. Maria in Traspontina | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 43.3 | Appointed | Emilio Gentile † | Bishop of Alife, Italy |
| 46.9 | Ordained Bishop | Dominique de Santini † | Bishop of Nebbio, France | Bishop Emeritus |
| 21 Jul | 25.9 | Ordained Priest | Ignacy Bardziński † | Priest of Gniezno, Poland | Auxiliary Bishop |
| 43.4 | Ordained Bishop | Emilio Gentile † | Bishop of Alife, Italy |
| 22 Jul | 64.6 | Died | Charles-Gilbert de May de Termont † | Bishop of Blois, France |
| 12 Aug | 58.7 | Ordained Bishop | Maximilian Augustinus Christoph Reichsfreiherr von Rodt † | Bishop of Konstanz {Constance}, Germany |
| 17 Aug | 34.9 | Died | Franz Karl Maria Cajetan Reichsgraf von Firmian † | Auxiliary Bishop of Passau, Germany |
| 18 Aug | 78.8 | Died | Johannes Christoph Ludwig Reichsgraf von Kuenburg † | Auxiliary Bishop of Passau, Germany |
| 20 Aug | | Born | Manuel Bernardo Morete Bodelón † | Magaz de Arriba | Bishop of Astorga, Spain |
| 25 Aug | 43.6 | Installed | Joseph Adam Graf Arco † | Bishop of Hradec Králové, Czech Republic | Bishop of Seckau, Austria |
| 26 Aug | 23.1 | Ordained Priest | Jakub Ignacy Dederko † | Priest of Society of Jesus | Bishop of Minsk, Belarus |
| 4 Sep | 41.6 | Died | Joseph Paul Sedeler † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 11 Sep | | Born | Agustín Lorenzo Varela Temes † | Sabadelle | Bishop of Salamanca, Spain |
| 16 Sep | | Born | Cipriano Sánchez Varela † | San Lorenzo de El Escorial | Bishop of Plasencia, Spain |
| 51.8 | Confirmed | Peter Michael Vigil Reichsgraf von Thun und Hohenstein † | Bishop of Trento, Italy |
| 21 Sep | 24.0 | Ordained Priest | Anne-Louis-Henri de La Fare † | Priest of Dijon, France | Cardinal, Archbishop of Sens (-Auxerre), France |
| 25 Sep | 67.7 | Died | Thomas Burke (de Burgo), O.P. † | Bishop of Ossory, Ireland |
| 30 Sep | 63.1 | Appointed | Pierre Brigot, M.E.P. † | Vicar Apostolic of Verapoly, India |
| 66.5 | Succeeded | Olivier-Simon Le Bon, M.E.P. † | Vicar Apostolic of Siam, Thailand |
| 3 Oct | | Born | Thomas Walsh † | London | Vicar Apostolic of London District, England, Great Britain |
| 4 Oct | | Born | Antonio Tosti † | Rome | Cardinal, Librarian of the Vatican Library |
| 6 Oct | 34.7 | Ordained Bishop | Alexandre-François-Amédée-Adonis-Louis-Joseph de Lauzières de Thémines † | Bishop of Blois, France |
| 11 Oct | | Born | Bernard Georg Kellermann † | Freckenhorst | Bishop-Elect of Münster, Germany |
| 17 Oct | 71.0 | Died | Johann Wenzel Xaver Freiherr Frey von Freyenfels † | Auxiliary Bishop of Olomouc, Czech Republic |
| 20 Oct | 71.8 | Died | Manuel Antonio de la Torre † | Bishop of Buenos Aires, Argentina |
| 31 Oct | 62.6 | Died | Maximilian Reichsgraf von Hamilton † | Bishop of Olomouc, Czech Republic |
| Nov | 28.8 | Ordained Priest | Henry Conwell † | Priest | Bishop of Philadelphia, Pennsylvania, USA |
| 1 Nov | 53.4 | Died | Francisco de Saldanha da Gama † | Cardinal, Patriarch of Lisboa, Portugal |
| 11 Nov | 51.0 | Installed | Karol Salbeck † | Bishop of Spiš, Slovakia |
| 12 Nov | | Born | Joaquim de Nossa Senhora de Nazareth Oliveira e Abreu, O.F.M. † | Nazaré Pederneira | Bishop of Coimbra, Portugal |
| 17 Nov | 56.2 | Died | Francisco de los Ríos y Armengol, O.P. † | Bishop of Panamá |
| 47.5 | Ordained Bishop | Ignaz Franz Stanislaus Reichsgraf von Spaur † | Titular Bishop of Chrysopolis in Arabia | Bishop of Brixen {Bressanone}, Italy |
| 30 Nov | 52.0 | Ordained Bishop | Peter Michael Vigil Reichsgraf von Thun und Hohenstein † | Bishop of Trento, Italy |
| 16 Dec | 30.0 | Appointed | Nicolò Saverio Gamboni † | Bishop of Capri, Italy | Patriarch of Venezia {Venice}, Italy |
| 56.4 | Appointed | Juan Domingo González de la Reguera † | Bishop of Santa Cruz de la Sierra, Bolivia | Archbishop of Lima, Peru |
| 51.9 | Appointed | Blas Manuel Sobrino y Minayo † | Bishop of Quito, Ecuador | Bishop of Trujillo, Peru |
| 39.6 | Appointed | Thomas Johann Kaspar Reichsgraf von Thun und Hohenstein † | Auxiliary Bishop of Passau, Germany | Bishop |
| 39.6 | Appointed | Thomas Johann Kaspar Reichsgraf von Thun und Hohenstein † | Titular Bishop of Thyatira | Bishop of Passau, Germany |
| 61.1 | Appointed | Franz Xaver Twrdy † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 61.1 | Appointed | Franz Xaver Twrdy † | Titular Bishop of Hippos | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 20 Dec | | Born | Diego de Aranda y Carpinteiro † | Puebla | Bishop of Guadalajara, Jalisco, México |
| 21 Dec | 22.8 | Ordained Priest | Giuseppe Della Casa † | Priest | Bishop of Alatri, Italy |
| 24.2 | Ordained Priest | John Milner † | Priest | Vicar Apostolic of Midland District, England, Great Britain |
| 23.1 | Ordained Priest | Emeric Karol Raffay † | Priest of Zagreb, Croatia | Bishop of Sirmio, Croatia |
| 27 Dec | 78.8 | Retired | Pierre-Jules-César de Rochechouard-Montigny † | Bishop of Bayeux, France | Bishop Emeritus |