| 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 |
| Died | Francesco Antonio Cavalcanti, O. Theat. † | Archbishop of Cosenza, 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 |
| Died | Giovanni Costantino Falletti † | Archbishop of Cagliari, Italy |
| 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 |
| Appointed | Cosimo Pierbenedetto Maculani † | Bishop of Terni, Italy |
| Died | Basilio Matranga, O.S.B.M. † | Titular Archbishop of Achrida |
| 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 Titular See | Auxiliary Bishop of Poznań, Poland |
| Died | Raimondo Pecchioli, O.P. † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 78.7 | Resigned | Teodoro Pongelli (Pungelli) † | Bishop of Terni, Italy | Bishop Emeritus |
| 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 | Isidoro Sanchez de Luna, O.S.B. † | Bishop of Ariano, Italy | Archbishop of Salerno, Italy |
| Appointed | Tommaso Sersale † | Bishop of Potenza, Italy |
| 78.8 | Died | Filippo Tipaldi † | Bishop of Ariano, 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 |
| 51.7 | Appointed | Ferdinando Mandarani † | Bishop of Oppido Mamertina, 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 | 50.3 | Appointed | Nicola Cioffi † | Archbishop of Amalfi, Italy |
| 57.2 | Appointed | José Alfonso Meléndez, O.F.M. † | Archbishop of Palermo, Italy |
| 41.5 | Appointed | Giovanni Francesco Mora, C.O. † | Bishop of Famagusta, Turkey | Bishop of Adria, 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 Emeritus of Amelia, Italy |
| 2 Mar | | Born | Bernardo Maria Carenzoni, O.S.B. † | Brescia | Bishop of Feltre, 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 |
| 28 Mar | 90.8 | Died | Domenico Ballati-Nerli, O.S.B. † | Bishop of Colle di Val d’Elsa, Italy |
| 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 |
| Apr | | Died | Lodovico Maria Pandolfini † | Bishop of Volterra, Italy |
| 1 Apr | 60.3 | Appointed | Francisco Díaz Santos y Bullón † | Bishop of Barcelona, Spain | Archbishop of Burgos, Spain |
| Appointed | Giulio Cesare Gandolfi † | Archbishop of Cagliari, Italy | Archbishop Emeritus |
| 71.1 | Appointed | Mario Millini (Mellini) † | Cardinal, Cardinal-Priest of S. Marcello |
| 2 Apr | | Born | Michel Bradács † | Kamionka | Auxiliary Bishop of Mukacheve (Ruthenian), Ukraine |
| 50.5 | Died | Gaetano Fraccagnani † | Bishop of Città della Pieve, Italy |
| 10 Apr | | Appointed | Pietro Cristiani † | Bishop of Piacenza, Italy |
| 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 |
| Ordained Bishop | Giulio Cesare Gandolfi † | Archbishop of Cagliari, Italy | Archbishop Emeritus |
| 52.0 | Ordained Bishop | Leopold Maria Joseph Reichsgraf von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 30 Apr | | Died | Alessandro degli Abbati † | Bishop of Viterbo e Tuscania, Italy |
| 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 |
| 4 May | | Born | Gennaro Maria Guevara Suardo, O.S.B. † | Napoli | Bishop of Aversa, Italy |
| 6 May | 58.0 | Appointed | Francisco Julián de Antolino † | Bishop of Puerto Rico (Porto Rico) | Bishop of Caracas, Santiago de Venezuela |
| 48.6 | Appointed | Michele Maria Capece Galeota † | Archbishop of Cosenza, Italy | Archbishop of Capua, Italy |
| 31.8 | Appointed | Giuseppe Du Mesnil † | Bishop of Volterra, Italy |
| 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) |
| 72.4 | Appointed | Raniero Felice Simonetti † | Archbishop (Personal Title) of Viterbo e Tuscania, Italy | Cardinal, Bishop |
| 44.3 | Appointed | Francesco Testa † | Bishop of Siracusa, Italy | Archbishop of Monreale, Italy |
| 11 May | 57.0 | Died | Lothar Friedrich von Nalbach † | Auxiliary Bishop of Trier, Germany |
| 15 May | 77.0 | Appointed | Virgilio Giannotti † | Bishop of Città della Pieve, Italy |
| 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 von Firmian † | Coadjutor Bishop of Trento, Italy | Cardinal, Bishop of Passau, Germany |
| Born | Lorenzo Girolamo Mattei † | Rome | Cardinal, Archbishop of the 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 |
| 16 Jun | | Born | Paolo Maggiolo † | Porto Venere | Bishop of Albenga, Italy |
| 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 |