| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Appointed | Bernardo de Arbizu y Ugarte † | Bishop of Cartagena, Colombia |
| Appointed | João de Azevedo † | Bishop of Portalegre, Portugal |
| Born | Charles Berington † | Stock Hall | Vicar Apostolic of Midland District, England, Great Britain |
| 48.3 | Appointed | Michele M. Capece Galeota † | Archbishop of Cosenza, Italy | Archbishop of Capua, Italy |
| Appointed | Nicola Cioffi † | Archbishop of Amalfi, Italy |
| 16.0 | Professed | Joaquín Company Soler, O.F.M. † | Member of Order of Friars Minor | Archbishop of Valencia, Spain |
| Born | Henry Conwell † | Ballyriff, Ireland | Bishop of Philadelphia, Pennsylvania, USA |
| 54.0 | Appointed | Jean-François Dondel † | Bishop of Dol, France |
| 36.0 | Appointed | Jean-Louis de La Marthonie de Caussade † | Bishop of Poitiers, France | Bishop of Meaux, France |
| Died | Manuel Lopes Simões † | Bishop of Portalegre, Portugal |
| Born | Gabriel-Melchior de Messey † | Langres | Bishop of Valence, France |
| 56.0 | Appointed | Gregorio de Molleda y Clerque † | Archbishop of La Plata o Charcas, Bolivia |
| 50.0 | Appointed | Józef Pawlowski † | Auxiliary Bishop of Poznań, Poland |
| 50.0 | Appointed | Józef Pawlowski † | Titular Bishop of the unknown of Titular See | Auxiliary Bishop of Poznań, Poland |
| Died | Raimondo Pecchioli † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 33.0 | Appointed | Joseph Rolin de Morel de Mons † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| Appointed | Paul-Loup de Salières de Fosseran † | Bishop of Vaison, France |
| Appointed | Tommaso Sersale † | Bishop of Potenza, Italy |
| 44.0 | Appointed | Francesco Testa † | Bishop of Siracusa, Italy | Archbishop of Monreale, Italy |
| Resigned | Matteo Trigona † | Bishop of Siracusa, Italy | Bishop Emeritus |
| 64.7 | Appointed | Louis-François-Renaud de Villeneuve † | Bishop of Montpellier, France |
| Appointed | Richard Walsh † | Bishop of Cork, Ireland |
| Jan | 78.0 | Died | Joseph-Louis de Cahorne de La Palun † | Bishop of Vaison, France |
| 20 Jan | 54.6 | Installed | Pedro Felipe de Azúa e Iturgoyen † | Archbishop of Santafé en Nueva Granada, Colombia | Archbishop Emeritus |
| 50.3 | Appointed | Francisco Cuartero Lumbreras † | Bishop of Segorbe, Spain |
| 21 Jan | 54.6 | Installed | Pedro Miguel Argandoña Pastene Salazar † | Bishop of Tucumán, Argentina | Archbishop of La Plata o Charcas, Bolivia |
| 29 Jan | | Ordained Bishop | Giovanni B. Baratta † | Bishop of Novara, Italy |
| 49.0 | Appointed | Benito Marín, O.S.B. † | Bishop of Barbastro, Spain | Bishop of Jaén, Spain |
| 44.6 | Appointed | Manuel José Rubio y Salinas † | Archbishop of México, Federal District |
| Feb | 75.1 | Retired | Gaspard de La Valette de Thomas † | Bishop of Autun, France | Bishop Emeritus |
| 10 Feb | | Born | Jean-Joseph-Victor de Castellane-Adhémar † | Marseille | Bishop of Senez, France |
| 14 Feb | 58.3 | Died | Georges-Lazare Berger de Charancy † | Bishop of Montpellier, France |
| 17 Feb | 71.6 | Resigned | Pietro Agostino Scorza (Scortia) † | Bishop of Amalfi, Italy | Bishop Emeritus |
| 18 Feb | | Born | Francisco Javier Mier Campillo † | Alles | Bishop Emeritus of Almería, Spain |
| 19 Feb | 57.2 | Appointed | José Alfonso Meléndez, O.F.M. † | Archbishop of Palermo, Italy |
| 51.8 | Confirmed | Leopold Maria Joseph Reichsgraf von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 21 Feb | | Born | Antonio Bergosa y Jordán † | Jaca, Huesca, Spain | Archbishop of Tarragona, Spain |
| 77.4 | Died | Raffaele Cosimo de Girolami † | Cardinal, Prefect of the Congregation for Indulgences and Relics |
| 24 Feb | | Born | Fortunato Maria Pinchetti † | Rome | Bishop of Amelia, Italy |
| 4 Mar | 57.7 | Appointed | Matías Escalzo Acedo † | Bishop of Astorga, Spain |
| 49.7 | Died | Juan Antonio Oruña † | Bishop of Osma, Spain |
| 5 Mar | 31.7 | Appointed | Philipp Gotthard Graf von Schaffgotsch † | Bishop of Wrocław, Poland |
| 7 Mar | | Born | Francesco Chiarchiaro † | Palazzo Adriano | Titular Bishop of Lampsacus |
| 14 Mar | 74.2 | Died | Nicolas de Malezieu † | Bishop of Lavaur, France |
| 18 Mar | 34.6 | Appointed | Antoine de Malvin de Montazet † | Bishop of Autun, France | Archbishop of Lyon, France |
| 24 Mar | 49.2 | Ordained Bishop | Benito Marín, O.S.B. † | Bishop of Barbastro, Spain | Bishop of Jaén, Spain |
| 26 Mar | 26.2 | Ordained Priest | Krysztof Hilary Szembek † | Priest of Poznań, Poland | Bishop of Płock, Poland |
| 27 Mar | | Born | Joseph Anton Gall † | Weil der Stadt | Bishop of Linz, Austria |
| 30 Mar | | Born | Jozef Kluch † | Znióváralja | Bishop of Nitra, Slovakia |
| 31 Mar | 28.1 | Ordained Deacon | Giovanni Francesco Albani † | Deacon of S. Cesareo in Palatio | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 1 Apr | 60.3 | Appointed | Francisco Díaz Santos y Bullón † | Bishop of Barcelona, Spain | Archbishop of Burgos, Spain |
| 2 Apr | | Born | Michel Bradács † | Kamionka | Auxiliary Bishop of Mukacheve (Ruthenian), Ukraine |
| 11 Apr | | Died | Giovanni B. Baratta † | Bishop of Novara, Italy |
| 12 Apr | 53.5 | Died | Juan Bautista Ferrer y Castro † | Bishop of Lugo, Spain |
| 17 Apr | | Born | Custodio de Santa Ana d'Almeida, O.A.D. † | Porto, Portugal | Bishop of São Tomé e Príncipe |
| Born | Leopold Leonhard Reichsgraf von Thun † | Tetschen | Bishop of Passau, Germany |
| 26 Apr | | Born | Alessandro Malvasia † | Bologna | Cardinal, Cardinal-Priest of S. Croce in Gerusalemme |
| 28 Apr | 52.3 | Ordained Bishop | Jean-Marie de Catelan † | Bishop of Rieux, France |
| 52.0 | Ordained Bishop | Leopold Maria Joseph Reichsgraf von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 30 Apr | 72.9 | Died | Otto Honorius Reichsgraf von Egkh und Hungersbach † | Auxiliary Bishop of Olomouc, Czech Republic |
| 1 May | 35.0 | Ordained Bishop | Edmond Bennetat, M.E.P. † | Titular Bishop of Eucarpia | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 24.9 | Ordained Priest | Tomaz da Encarnação da Costa e Lima, C.R.S.A. † | Priest of Confederation of Canons Regular of St. Augustine | Bishop of Olinda, Brazil |
| 2 May | 64.8 | Appointed | Carlo Alberto Guidobono Cavalchini † | Prefect of the Congregation of Bishops and Regulars | Cardinal, Datary of the Apostolic Datary |
| 6 May | 58.0 | Appointed | Francisco Julián de Antolino † | Bishop of Puerto Rico (Porto Rico) | Bishop of Caracas, Santiago de Venezuela |
| 29.6 | Appointed | Daniel Johann Anton Reichsritter von Gebsattel † | Auxiliary Bishop of Würzburg, Germany |
| 29.6 | Appointed | Daniel Johann Anton Reichsritter von Gebsattel † | Titular Bishop of Sigus | Auxiliary Bishop of Würzburg, Germany |
| 44.0 | Appointed | Franz Xaver Anton Marxer † | Auxiliary Bishop of Wien, Austria |
| 44.0 | Appointed | Franz Xaver Anton Marxer † | Titular Bishop of Chrysopolis in Arabia | Auxiliary Bishop of Wien, Austria |
| 47.8 | Appointed | Diego Rojas Contreras † | Bishop of Calahorra y La Calzada, Spain | Bishop of Cartagena (en España) |
| 11 May | 57.0 | Died | Lothar Friedrich von Nalbach † | Auxiliary Bishop of Trier, Germany |
| 18 May | 61.4 | Resigned | Guilherme de São José Antonio de Aranha † | Bishop of Belém do Pará, Brazil | Bishop Emeritus |
| 42.4 | Succeeded | Miguel de Bulhões e Souza, O.P. † | Bishop of Belém do Pará, Brazil | Bishop of Leiria, Portugal |
| 19 May | 57.9 | Ordained Bishop | Matías Escalzo Acedo † | Bishop of Astorga, Spain |
| 22 May | | Born | Johann Prokop Graf von Schaffgotsch † | Praha | Bishop of Ceské Budĕjovice {Budweis}, Czech Republic |
| 29 May | 39.7 | Appointed | Leopold Ernst Graf von Firmian † | Coadjutor Bishop of Trento, Italy | Cardinal, Bishop of Passau, Germany |
| Born | Lorenzo Girolamo Mattei † | Rome | Cardinal, Archbishop of the unknown of Titular See |
| 31 May | 45.4 | Ordained Bishop | André-Jean-Baptiste-Dominique de Castellane † | Bishop of Glandèves, France |
| Jun | 30.4 | Appointed | Jean-Baptiste-Joseph de Fontanges † | Bishop of Lavaur, France |
| 6 Jun | 29.7 | Ordained Bishop | Daniel Johann Anton Reichsritter von Gebsattel † | Titular Bishop of Sigus | Auxiliary Bishop of Würzburg, Germany |
| 9 Jun | | Born | José Higinio Durán y Martel, O. de M. † | Lima, Peru | Bishop of Panamá |
| 18 Jun | | Born | Antonio Dugnani † | Milan | Cardinal, Prefect of the Apostolic Signatura |
| 23 Jun | 79.5 | Died | Jean-Louis du Bouschet de Sourches † | Bishop of Dol, France |
| 27 Jun | | Born | László Koszeghy von Romete † | Szeged | Bishop of Csanád, Hungary |
| 30 Jun | 60.6 | Ordained Bishop | Francisco Díaz Santos y Bullón † | Bishop of Barcelona, Spain | Archbishop of Burgos, Spain |
| 4 Jul | 49.0 | Died | Franz Joseph Anton von Hahn † | Auxiliary Bishop of Bamberg, Germany |
| 6 Jul | 78.5 | Died | Karol Antoni Szembek † | Archbishop of Gniezno, Poland |
| 10 Jul | 75.5 | Died | Gaspard de La Valette de Thomas † | Bishop Emeritus of Autun, France |
| 12 Jul | 41.5 | Appointed | Meletius Kovács † | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 41.5 | Appointed | Meletius Kovács † | Titular Bishop of Tegea | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 15 Jul | | Born | Joseph Jakob von Heckenstaller † | Regensburg | Vicar Apostolic Emeritus of Freising, Germany |
| 34.9 | Confirmed | Antoine de Malvin de Montazet † | Bishop of Autun, France | Archbishop of Lyon, France |
| 44.0 | Appointed | Ignazio Rovèro † | Bishop of Novara, Italy |
| 19 Jul | 45.2 | Died | Isidoro Marín Bullón y Figueroa † | Bishop of León en Nicaragua |
| 20 Jul | | Born | Giulio Gabrielli † | Rome | Cardinal, Prelate Emeritus of the Congregation of the Council |
| 5 Aug | | Born | Antonio Codronchi † | Imola | Archbishop of Ravenna, Italy |
| 7 Aug | | Born | Ján Révay † | Cachtice, Slovakia | Bishop of Spiš, Slovakia |
| 8 Aug | | Born | Luiz de Brito Homem † | Fundão | Bishop of São Luís do Maranhão, Brazil |
| 10 Aug | | Born | Michele Romano Sierakowski † | Tuvirtza | Auxiliary Bishop of Przemyśl, Poland |
| 11 Aug | 48.0 | Ordained Bishop | Diego Rojas Contreras † | Bishop of Calahorra y La Calzada, Spain | Bishop of Cartagena (en España) |
| 14 Aug | 63.6 | Died | Jérôme-Louis de Foudras de Courcenay † | Bishop of Poitiers, France |
| 18 Aug | 35.0 | Ordained Bishop | Antoine de Malvin de Montazet † | Bishop of Autun, France | Archbishop of Lyon, France |
| 21 Aug | | Born | Aurelio Roverella † | Cesena | Cardinal, Bishop of Palestrina, Italy |
| 1 Sep | 23.5 | Ordained Priest | Henry Benedict Mary Clement Stuart of York † | Priest | Cardinal, Bishop of Frascati, Italy |
| 16 Sep | 61.9 | Appointed | Francisco Izquierdo y Tavira, O.P. † | Bishop of Lugo, Spain |
| Appointed | Manuel Jiménez Bretón † | Bishop of Caracas, Santiago de Venezuela | Bishop-Elect |
| 41.7 | Ordained Bishop | Meletius Kovács † | Titular Bishop of Tegea | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 40.7 | Appointed | Johann Friedrich von Lasser † | Auxiliary Bishop of Mainz, Germany |
| 40.7 | Appointed | Johann Friedrich von Lasser † | Titular Bishop of Lycopolis | Auxiliary Bishop of Mainz, Germany |
| 23.5 | Appointed | Henry Benedict Mary Clement Stuart of York † | Cardinal-Priest of S. Maria in Portico | Cardinal, Bishop of Frascati, Italy |
| 57.5 | Appointed | Anton Johann Wenzel Wokaun (Woknau) † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 18 Sep | 46.9 | Appointed | Pedro Antonio de Barroeta Angel † | Archbishop of Lima, Peru | Archbishop of Granada, Spain |
| 21 Sep | 22.0 | Ordained Deacon | Joannes-Henricus von Frankenberg † | Deacon | Cardinal, Archbishop Emeritus of Mechelen, Belgium |
| 22 Sep | 50.7 | Ordained Bishop | Józef Pawlowski † | Titular Bishop of the unknown of Titular See | Auxiliary Bishop of Poznań, Poland |
| 24 Sep | 80.5 | Died | Francisco Cepeda Guerrero † | Bishop of Segorbe, Spain |
| 29 Sep | 52.8 | Died | Jean-Charles de Ségur † | Bishop Emeritus of Saint-Papoul, France |
| 30 Sep | 66.8 | Died | José Sancho Granado † | Bishop of Salamanca, Spain |
| 6 Oct | 33.8 | Ordained Bishop | Joseph Rolin de Morel de Mons † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 12 Oct | | Died | Francisco Gutiérrez Galeano, O. de M. † | Auxiliary Bishop of Lima, Peru |
| 13 Oct | | Born | Felix Graf von Stubenberg † | Graz | Auxiliary Bishop of Eichstätt, Germany |
| 17 Oct | | Born | Alfonso Cingari † | Bologna | Bishop of Cagli, Italy |
| 59.3 | Appointed | Johann Friedrich Karl Reichgraf von Ostein † | Coadjutor Bishop of Worms, Germany | Archbishop of Mainz, Germany |
| 18 Oct | | Born | Karl Friedrich Freiherr von Wendt † | Papenhausen | Auxiliary Bishop of Hildesheim, Germany |
| 22 Oct | 76.0 | Died | Ferdinand Oesterhoff, O. Cist. † | Auxiliary Bishop Emeritus of Münster, Germany |
| 29 Oct | 50.8 | Died | Ross Roe MacMahon (McMahon) † | Archbishop of Armagh, Ireland |
| 1 Nov | | Born | Juan Raimundo Santos Larumbe y Larrayoz † | Pamplona | Bishop of Tudela, Spain |
| 7 Nov | 53.6 | Died | Bernardo Rodrigues Nogueira † | Bishop of São Paulo, Brazil |
| 8 Nov | | Born | Benedetto Sinibaldi † | Osimo, Italy | Titular Archbishop of Ephesus |
| 10 Nov | 62.1 | Ordained Bishop | Francisco Izquierdo y Tavira, O.P. † | Bishop of Lugo, Spain |
| Born | Leopold Perlaki Somogy † | Szent Marton | Bishop of Szombathely, Hungary |
| 13 Nov | | Ordained Bishop | João de Azevedo † | Bishop of Portalegre, Portugal |
| 18 Nov | | Born | Karl Franz von Lodron † | Innsbruck | Bishop of Brixen {Bressanone}, Italy |
| 20 Nov | | Born | Eugenio Giovanni Battista Giuseppe Cerina, O.F.M. † | Cosia, Italy | Titular Bishop of Sergiopolis |
| 23 Nov | | Born | Jan Klemens Golaszewski † | Tykocin | Bishop of Foreign Diocese |
| 30 Nov | 40.9 | Ordained Bishop | Johann Friedrich von Lasser † | Titular Bishop of Lycopolis | Auxiliary Bishop of Mainz, Germany |
| 2 Dec | 59.3 | Appointed | Pedro Gómez de la Torre † | Bishop of Ciudad Rodrigo, Spain | Bishop of Plasencia, Spain |
| 47.8 | Appointed | Johann Nikolaus (Febronius) von Hontheim † | Auxiliary Bishop of Trier, Germany |
| 47.8 | Appointed | Johann Nikolaus (Febronius) von Hontheim † | Titular Bishop of Myriophytos | Auxiliary Bishop of Trier, Germany |
| 7 Dec | | Born | Andrés Ambrosio de Llanos y Valdés, O.F.M. † | Rueda, Spain | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| Born | Gregory Stapleton † | Carlton | Vicar Apostolic of Midland District, England, Great Britain |
| 12 Dec | 30.9 | Ordained Bishop | Jean-Baptiste-Joseph de Fontanges † | Bishop of Lavaur, France |
| 14 Dec | | Born | Louis-François de Bausset-Roquefort † | Pondichéry, India | Cardinal, Bishop Emeritus of Alès (Alais), France |
| 15 Dec | | Born | Henri de Chambre d'Urgons † | Tartas | Auxiliary Bishop of Metz, France |
| 16 Dec | 41.8 | Appointed | Andrés Cano Junquera † | Auxiliary Bishop of Sigüenza, Spain |
| 41.8 | Appointed | Andrés Cano Junquera † | Titular Bishop of Aradus | Auxiliary Bishop of Sigüenza, Spain |
| 40.2 | Confirmed | Leopold Ernst Graf von Firmian † | Coadjutor Bishop of Trento, Italy | Cardinal, Bishop of Passau, Germany |
| 40.4 | Appointed | Heinrich Joseph von Nitschke † | Auxiliary Bishop of Bamberg, Germany |
| 40.4 | Appointed | Heinrich Joseph von Nitschke † | Titular Bishop of Antipatris | Auxiliary Bishop of Bamberg, Germany |
| 19 Dec | | Installed | João de Azevedo † | Bishop of Portalegre, Portugal |
| 20 Dec | 91.7 | Died | José Espejo Cisneros † | Bishop Emeritus of Calahorra y La Calzada, Spain |
| 21 Dec | 26.0 | Ordained Priest | Guillaume Piguel, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Cochin {Cocincina}, Viêt Nam |
| 27.0 | Ordained Priest | Bertrand Reydellet, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 28 Dec | 86.9 | Died | Johann Adam Nieberlein † | Auxiliary Bishop of Eichstätt, Germany |