| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 78.8 | Died | Federico Alamanni † | Bishop of Pistoia-Prato, Italy |
| 53.6 | Died | Filippo Amadei † | Bishop of Perugia, Italy |
| Appointed | Rocco Maria Barsanti † | Bishop of Fossombrone, Italy | Bishop of Pesaro, Italy |
| Resigned | Julien-François Becquet, C.S.Sp. † | Prefect of Iles Saint-Pierre et Miquelon | Prelate Emeritus |
| 27.0 | Ordained Priest | Charles Berington † | Priest | Vicar Apostolic of Midland District, England, Great Britain |
| 40.6 | Appointed | François de Bonnal (Bonal) † | Bishop of Clermont, France |
| Born | Diego Cepece (Capece) † | Tempio | Bishop of Ampurias e Tempio, Italy |
| 37.4 | Appointed | Barthélemy-Louis-Martin de Chaumont de La Galaisière † | Bishop of Saint-Dié, France |
| 41.3 | Appointed | Marcantonio Conti † | Titular Archbishop of Damascus | Bishop Emeritus of Pesaro, Italy |
| 41.3 | Resigned | Marcantonio Conti † | Bishop of Pesaro, Italy | Bishop Emeritus |
| 53.0 | Appointed | Charles-Bernard-Collin de Contrisson † | Auxiliary Bishop of Laon, France |
| 53.0 | Appointed | Charles-Bernard-Collin de Contrisson † | Titular Bishop of Thermopylae | Auxiliary Bishop of Laon, France |
| 46.0 | Appointed | Jan Dembowski † | Coadjutor Bishop of Kamyanets-Podilskyi, Ukraine | Bishop |
| 46.0 | Appointed | Jan Dembowski † | Titular Bishop of Draso | Bishop of Kamyanets-Podilskyi, Ukraine |
| Born | Geronimo do Barco, O.F.M. † | Barco, Portugal | Bishop Emeritus of Santiago de Cabo Verde |
| 57.4 | Appointed | Onofrio de Rossi † | Bishop of Sant’Agata de’ Goti, Italy |
| 23.4 | Ordained Priest | Marie-Jean-Philippe Dubourg † | Priest | Bishop of Limoges, France |
| Appointed | Giuseppe Antonio Farao † | Bishop of San Severo, Italy |
| 48.9 | Appointed | Jean-Auguste Frétat de Sarra † | Bishop of Nantes, France |
| Born | Girolamo Gavi † | | Bishop of Livorno, Italy |
| 45.7 | Appointed | Jean-Charles-Vincent-Gaspar-Constantin-Antoine Giovio † | Archbishop of Avignon, France |
| Born | Manoel Joaquim Gonçalves de Andrade † | Campanario | Bishop of São Paulo, Brazil |
| Appointed | Melchior Jan Kochnowski † | Auxiliary Bishop of Chelm, Poland |
| Appointed | Melchior Jan Kochnowski † | Titular Bishop of Dionysias | Auxiliary Bishop of Chelm, Poland |
| Born | Jan Nepomucen Kossakowski † | | Bishop of Vilnius, Lithuania |
| 35.0 | Appointed | Jean-Baptiste-Joseph de Lubersac † | Bishop of Tréguier, France | Bishop Emeritus of Chartres, France |
| Born | Ramón Ignacio Méndez † | Barinas | Archbishop of Caracas, Santiago de Venezuela |
| 23.0 | Ordained Priest | Patrick MacMullan † | Priest | Bishop of Down and Connor, Ireland |
| 39.3 | Ordained Bishop | Francis Moylan † | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland | Bishop of Cork, Ireland |
| 41.2 | Appointed | Adam Stanisław Naruszewicz † | Auxiliary Bishop of Smoleńsk, Poland | Bishop of Luceoria o Łuck e Zytomir o Zytomierz, Ukraine |
| 70.2 | Died | Celestino Orlandi, O.S.B. † | Bishop of Molfetta, Italy |
| Died | Francesco Pantuliano † | Bishop of Policastro, Italy |
| 33.4 | Incardinated | Ignacy Jan Zygmunt von Raczynski † | Priest of Poznań, Poland | Archbishop Emeritus of Gniezno, Poland |
| 57.1 | Appointed | Maximilian Augustinus Christoph Reichsfreiherr von Rodt † | Bishop of Konstanz {Constance}, Germany |
| Appointed | Giuseppe de Rosa † | Bishop of Policastro, Italy |
| 40.6 | Incardinated | Philipp Anton Schmidt † | Priest of Speyer, Germany | Auxiliary Bishop |
| Appointed | Giuseppe Sparano † | Archbishop of Acerenza e Matera, Italy |
| 27.3 | Incardinated | Michal Mateusz Stadnicki, O.S.B.M. † | Priest | Bishop of Foreign Diocese |
| Died | Nicolas (Angelo Odardo) Stefanini † | Bishop of Acci and Mariana, France |
| Born | Giacomo de Vincentils † | Chieti | Archbishop of Lanciano (e Ortona), Italy |
| 47.7 | Appointed | Friedrich Wilhelm Freiherr von Westphalen † | Vicar Apostolic of Nordic Missions, Germany | Bishop of Hildesheim, Germany |
| 8 Jan | | Born | Felice Greco † | Catanzaro | Bishop of San Marco e Bisignano, Italy |
| 18 Jan | 84.1 | Died | Francesco Alessandro Odoardi † | Bishop of Terracina, Priverno e Sezze, Italy |
| 19 Jan | | Died | Eugenio Benedetto Scaramuccia † | Bishop of San Severo, Italy |
| 4 Feb | 78.5 | Died | Ferdinando Maria de Rossi † | Cardinal, Prefect of the Congregation of the Council |
| 11 Feb | 72.3 | Died | Alsonso Francisco Arango † | Bishop of Orense, Spain |
| 15 Feb | 57.1 | Elected | Giovanni Angelico Braschi † | Pope (Roma {Rome}, Italy) |
| Born | José Talayero Royo, O.P. † | Villarluengo | Bishop of Albarracin, Spain |
| 20 Feb | 68.4 | Died | Jean-Joseph Chapelle de Saint-Jean de Jumilhac † | Archbishop of Arles, France |
| 22 Feb | 57.2 | Ordained Bishop | Giovanni Angelico Braschi † | Pope (Roma {Rome}, Italy) |
| 26 Feb | 36.3 | Appointed | Bl. Jean-Marie du Lau d'Allemans † | Archbishop of Arles, France |
| Born | Francisco Xavier de Garaycoa Llaguno † | Guayaquil | Archbishop of Quito, Ecuador |
| 27 Feb | 43.8 | Appointed | Franz Philipp Graf von Inzaghi † | Bishop of Trieste, Italy | Bishop of Gorizia e Gradisca, Italy |
| 9 Mar | | Born | Gabriele Maria de Marchis † | Lungro | Titular Bishop of Tiberiopolis |
| 11 Mar | 23.4 | Ordained Priest | Paolo Lamberto D'Allègre † | Priest | Bishop of Pavia, Italy |
| 13 Mar | 54.7 | Appointed | Agustín de Alvarado y Castillo † | Archbishop of Santafé en Nueva Granada, Colombia | Bishop of Ciudad Rodrigo, Spain |
| 54.8 | Appointed | Domenico Maria Clavarini, O.P. † | Bishop of Ventimiglia, Italy |
| Appointed | Pellegrino Consalvi † | Bishop of Fano, Italy |
| Appointed | Francesco Antonio Deplano † | Bishop of Iglesias, Italy |
| 56.2 | Confirmed | Friedrich Karl Joseph Reichsfreiherr von Erthal † | Archbishop of Mainz, Germany | Archbishop Emeritus |
| 56.2 | Confirmed | Friedrich Karl Joseph Reichsfreiherr von Erthal † | Bishop of Worms, Germany | Archbishop Emeritus of Mainz, Germany |
| 38.8 | Appointed | Domingo Ramón Fernández Angulo † | Bishop of Tui, Spain |
| 37.0 | Appointed | Józef Kazimierz Kossakowski † | Auxiliary Bishop of Vilnius, Lithuania | Coadjutor Bishop |
| 37.0 | Appointed | Józef Kazimierz Kossakowski † | Titular Bishop of the unknown of Titular See | Coadjutor Bishop of Vilnius, Lithuania |
| 48.0 | Appointed | Tomás Lorenzana Butrón † | Bishop of Gerona, Spain |
| 60.5 | Appointed | Gennaro Antonio de Simone † | Bishop of Pesaro, Italy | Cardinal, Bishop Emeritus |
| 50.2 | Appointed | Blas Manuel Sobrino y Minayo † | Bishop of Cartagena, Colombia | Bishop of Trujillo, Peru |
| 61.4 | Appointed | Girolamo Spínola † | Cardinal-Priest of S. Cecilia | Cardinal, Cardinal-Bishop of Palestrina |
| 20 Mar | 73.4 | Died | Pedro Antonio de Barroeta Angel † | Archbishop of Granada, Spain |
| 22 Mar | 62.6 | Appointed | Carlo Vittorio Amedeo delle Lanze † | Cardinal, Prefect of the Congregation of the Council |
| 24 Mar | | Born | Giuseppe-Maria Lais † | Roma | Bishop of Ferentino, Italy |
| 29 Mar | 52.9 | Appointed | Francesco Carafa della Spina di Traetto † | Cardinal, Prefect of the Congregation of Bishops and Regulars |
| 1 Apr | 75.3 | Died | Pierre Mauclerc de la Musanchère † | Bishop of Nantes, France |
| 22.7 | Ordained Priest | Emanuel von Schimonski-Schimoni † | Priest of Wrocław, Poland | Bishop |
| 2 Apr | 53.3 | Ordained Bishop | Charles-Bernard-Collin de Contrisson † | Titular Bishop of Thermopylae | Auxiliary Bishop of Laon, France |
| 3 Apr | 56.4 | Installed | Pasquale Acquaviva d’Aragona † | Cardinal-Deacon of S. Maria in Aquiro | Cardinal, Cardinal-Deacon of S. Eustachio |
| 33.6 | Confirmed | Sébastien-Michel Amelot † | Bishop of Vannes, France | Bishop Emeritus |
| 44.2 | Installed | Innocenzo Conti † | Cardinal-Priest of S. Silvestro in Capite | Cardinal, Titular Archbishop of Tyrus |
| 49.9 | Confirmed | Johann Heinrich von Kerens, S.J. † | Bishop of Wiener Neustadt, Austria | Bishop of Sankt Pölten, Austria |
| 56.6 | Appointed | Henri-Marie-Bernardin de Rosset de Ceilhes de Fleury † | Archbishop of Cambrai, France |
| 36.1 | Appointed | Domenico Spinucci † | Titular Bishop of the unknown of Titular See | Cardinal, Archbishop of Benevento, Italy |
| 61.5 | Appointed | Girolamo Spínola † | Cardinal, Cardinal-Bishop of Palestrina |
| 61.8 | Appointed | Antonio Eugenio Visconti † | Cardinal, Cardinal-Priest of S. Croce in Gerusalemme |
| 4 Apr | | Born | Francesco di Paolo Pawtowski † | Czersk | Bishop of Płock, Poland |
| 5 Apr | 81.5 | Died | Simon Nikolaus Euseb Reichsgraf von Montjoye-Hirsingen † | Bishop of Basel, Switzerland |
| 9 Apr | | Born | Vitaliano Provenzano † | Catanzaro | Auxiliary Bishop of Catanzaro, Italy |
| 11 Apr | 68.3 | Died | Meletius Kovács † | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 15 Apr | 22.8 | Ordained Priest | Giovanni Coppola † | Priest | Titular Archbishop of Myra |
| 17 Apr | 23.2 | Ordained Priest | John Chisholm † | Priest | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 36.1 | Ordained Bishop | Domenico Spinucci † | Titular Bishop of the unknown of Titular See | Cardinal, Archbishop of Benevento, Italy |
| 23 Apr | 33.6 | Ordained Bishop | Sébastien-Michel Amelot † | Bishop of Vannes, France | Bishop Emeritus |
| 24 Apr | 44.5 | Appointed | Leonardo Antonelli † | Cardinal-Priest of S. Sabina | Cardinal, Cardinal-Bishop of Ostia |
| 44.5 | Elevated to Cardinal | Leonardo Antonelli † | Cardinal, Cardinal-Bishop of Ostia |
| 36.5 | Confirmed | Bl. Jean-Marie du Lau d'Allemans † | Archbishop of Arles, France |
| 82.4 | Died | Jerzy Mikołaj Hylzen † | Bishop Emeritus of Smoleńsk, Poland |
| 43.9 | Confirmed | Franz Philipp Graf von Inzaghi † | Bishop of Trieste, Italy | Bishop of Gorizia e Gradisca, Italy |
| 75.8 | Elevated to Cardinal | Bernardino de Vecchi † | Cardinal, Cardinal-Deacon of S. Cesareo in Palatio |
| 27 Apr | | Born | Pietro Ostini † | Rome | Cardinal, Bishop Emeritus of Jesi, Italy |
| 30 Apr | 60.6 | Ordained Bishop | Gennaro Antonio de Simone † | Bishop of Pesaro, Italy | Cardinal, Bishop Emeritus |
| 3 May | 49.9 | Installed | Johann Heinrich von Kerens, S.J. † | Bishop of Wiener Neustadt, Austria | Bishop of Sankt Pölten, Austria |
| 5 May | 73.0 | Died | Antonio Sánchez Sardinero † | Bishop of Huesca, Spain |
| 7 May | 44.3 | Ordained Bishop | Guillaume-Joseph d'Abzac de Mayac † | Bishop of Saint-Papoul, France |
| 39.0 | Ordained Bishop | Domingo Ramón Fernández Angulo † | Bishop of Tui, Spain |
| 48.2 | Ordained Bishop | Tomás Lorenzana Butrón † | Bishop of Gerona, Spain |
| 14 May | 56.4 | Ordained Bishop | Friedrich Karl Joseph Reichsfreiherr von Erthal † | Archbishop of Mainz, Germany | Archbishop Emeritus |
| 58.5 | Appointed | Johann Andreas Kaiser † | Bishop of Hradec Králové, Czech Republic |
| 25 May | 71.0 | Died | Franz Xaver Anton Marxer † | Auxiliary Bishop of Wien, Austria |
| 26 May | 68.7 | Resigned | Francesco Maria Banditi, C.R. † | Bishop of Montefiascone, Italy | Cardinal, Archbishop of Benevento, Italy |
| 29 May | 65.9 | Elevated to Cardinal | Giovanni Carlo Bandi † | In Pectore | Cardinal, Bishop |
| 68.7 | Appointed | Francesco Maria Banditi, C.R. † | Cardinal, Archbishop of Benevento, Italy |
| Appointed | Kasper Kazimierz Cieciszowski † | Coadjutor Bishop of Foreign Diocese | Archbishop of Mohilev, Belarus |
| Appointed | Kasper Kazimierz Cieciszowski † | Titular Bishop of Theveste | Archbishop of Mohilev, Belarus |
| Appointed | Gerolamo Landolfi † | Bishop of Pozzuoli, Italy |
| 37.2 | Appointed | Joachim-François-Mamert de Conzié † | Archbishop of Tours, France |
| 46.0 | Appointed | Antoni Onufry Okecki † | Coadjutor Bishop of Poznań, Poland | Bishop of Chelm, Poland |
| 55.0 | Appointed | José Gregorio Alonso de Ortigosa † | Bishop of Antequera, Oaxaca, México | Bishop Emeritus |
| 58.7 | Appointed | Benedetto Pucilli † | Bishop of Terracina, Priverno e Sezze, Italy |
| 34.5 | Confirmed | Jean-Auguste de Chastenet de Puységur † | Bishop of Saint-Omer, France | Archbishop Emeritus of Bourges, France |
| 53.4 | Appointed | Krysztof Hilary Szembek † | Coadjutor Bishop of Płock, Poland | Bishop |
| 75.9 | Installed | Bernardino de Vecchi † | Cardinal, Cardinal-Deacon of S. Cesareo in Palatio |
| 48.0 | Appointed | Friedrich Ludwig Franz Reichsfreiherr von Wangen zu Geroldseck † | Bishop of Basel, Switzerland |
| 5 Jun | 74.4 | Died | François-Marie Le Maistre de La Garlaye † | Bishop of Clermont, France |
| 55.5 | Appointed | Tommaso Mancini † | Bishop of Città della Pieve, Italy |
| 10 Jun | 23.2 | Ordained Priest | Bartolomeo Cesare † | Priest | Bishop of Potenza e Marsico Nuovo, Italy |
| 24.2 | Ordained Priest | Francesco Ridolfi † | Priest | Titular Bishop of Carystus |
| 23 Jun | 46.1 | Appointed | Ignaz Franz Stanislaus Reichsgraf von Spaur † | Coadjutor Bishop of Brixen {Bressanone}, Italy | Bishop |
| 24 Jun | 58.7 | Ordained Bishop | Benedetto Pucilli † | Bishop of Terracina, Priverno e Sezze, Italy |
| 73.0 | Died | Antonio Sersale † | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 25 Jun | 43.5 | Ordained Bishop | Hugues-François de Regnault-Bellescize † | Bishop of Saint-Brieuc, France |
| 29 Jun | 34.6 | Ordained Bishop | Jean-Auguste de Chastenet de Puységur † | Bishop of Saint-Omer, France | Archbishop Emeritus of Bourges, France |