| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Appointed | José Andrés de Achurra y Núñez del Arco † | Bishop of Trujillo, Peru |
| Died | Francesco Antonio Bonaventura † | Bishop of Nusco, Italy |
| 74.1 | Died | Giuseppe Capocchiani † | Bishop of Crotone (Cotrone), Italy |
| Died | Benedetto Cervone † | Bishop of L’Aquila, Italy |
| Appointed | Henri-Charles du Lau d'Allemans † | Bishop of Grenoble, France |
| 65.3 | Died | Agostino Felice de' Rossi † | Bishop of Terni, Italy |
| 22.4 | Ordained Priest | Simon Garnier † | Priest | Bishop of Vannes, France |
| 72.7 | Appointed | Paolo Francesco Giustiniani, O.F.M. Cap. † | Titular Archbishop of Chalcedon | Bishop Emeritus of Treviso, Italy |
| 72.7 | Retired | Paolo Francesco Giustiniani, O.F.M. Cap. † | Bishop of Treviso, Italy | Bishop Emeritus |
| Appointed | Athanase IV Jaouhar † | Patriarch of Antiochia {Antioch} (Melkite), Syria |
| 54.9 | Appointed | Ignace-François de Joannis de Verclos † | Bishop of Acci and Mariana, France |
| 35.0 | Appointed | de Longueville † | Prefect of Iles Saint-Pierre et Miquelon | Prefect Emeritus |
| 24.2 | Ordained Priest | Alexandre-Charles-Louis-Rose de Lostanges-Saint-Alvère † | Priest | Bishop of Périgueux, France |
| Born | Camillo Monteforte † | Napoli | Auxiliary Bishop of Napoli {Naples}, Italy |
| 54.2 | Appointed | Adam Stanisław Naruszewicz † | Bishop of Smoleńsk, Poland | Bishop of Luceoria o Łuck e Zytomir o Zytomierz, Ukraine |
| 70.8 | Died | Giuseppe Maria Pilo † | Bishop of Ales e Terralba, Italy |
| 50.4 | Died | Domingo a Rosario, O.P. † | Bishop of São Tomé e Príncipe |
| 64.0 | Died | Mateo Joaquin Rubio de Arevalo † | Bishop of Cebu, Philippines |
| 53.6 | Died | Léon-François-Ferdinand de Salignac de La Mothe-Fénelon † | Bishop Emeritus of Lombez, France |
| 24.8 | Ordained Priest | Thomas Smith † | Priest | Vicar Apostolic of Northern District, England, Great Britain |
| 81.8 | Died | Francesco Saverio Stabile † | Bishop of Venafro, Italy |
| 21.7 | Professed | Pierre Trenchant, M.E.P. † | Member of La Société des Missions Etrangères | Coadjutor Vicar Apostolic of Se-Ciuen (Setchoan), China |
| Born | Gabriele Ventriglia † | Alife | Bishop of Caiazzo, Italy |
| Died | Gabriel Wodzyński † | Bishop of Smoleńsk, Poland |
| 16.9 | Professed | Roman Sebastian (Franz Xaver) Zängerle, O.S.B. † | Member of Order of Saint Benedict | Bishop of Seckau, Austria |
| 4 Jan | | Appointed | Thomas O’Connor † | Bishop of Achonry, Ireland |
| 5 Jan | 24.8 | Professed | Vicente da Soledade e Castro, O.S.B. † | Member of Order of Saint Benedict | Archbishop of São Salvador da Bahia, Brazil |
| 9 Jan | | Born | Rudolf Johannes Joseph Rainier von Habsburg-Lotharingen † | Florence | Cardinal, Archbishop of Olomouc, Czech Republic |
| 11 Jan | | Died | James Brady † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 13 Jan | 35.3 | Ordained Bishop | Anne-Louis-Henri de La Fare † | Bishop of Nancy, France | Cardinal, Archbishop of Sens (-Auxerre), France |
| 21 Jan | 85.0 | Died | Paul d’Albert de Luynes † | Cardinal, Archbishop of Sens, France |
| 23 Jan | 47.6 | Ordained Bishop | Pedro José Chávez de la Rosa † | Bishop of Arequipa, Peru | Bishop Emeritus |
| 60.3 | Appointed | Etienne-Charles de Loménie de Brienne † | Cardinal, Archbishop of Sens, France |
| 27 Jan | 50.7 | Ordained Bishop | Franz Egon Freiherr von Fürstenberg † | Titular Bishop of Derbe | Bishop of Hildesheim, Germany |
| 3 Feb | 39.1 | Ordained Bishop | Henri de Chambre d'Urgons † | Titular Bishop of Oropus | Auxiliary Bishop of Metz, France |
| 44.0 | Ordained Priest | Karl Theodor Freiherr von Dalberg † | Priest of Worms, Germany | Bishop |
| 43.9 | Installed | François de Fontanges † | Archbishop of Bourges, France | Bishop of Autun, France |
| 11 Feb | | Born | Anton Gottfried Claessen † | Gangelt | Auxiliary Bishop of Köln {Cologne}, Germany |
| 16 Feb | 24.4 | Ordained Priest | Giovanni Corcione † | Priest | Bishop of Bova, Italy |
| 24.4 | Ordained Priest | Angelo Pietro (Andelo Petar) Galli † | Priest of Corfù, Greece | Bishop of Hvar (Lesina), Croatia |
| 23.5 | Ordained Priest | Bartholomeu de Martyribus Maya, O.C.D. † | Priest of Order of Discalced Carmelites | Prelate of Mozambico, Mozambique |
| 19 Feb | 76.1 | Died | Manuel de Alday y Axpée † | Bishop of Santiago de Chile |
| 20 Feb | | Born | Giuseppe Cosenza † | Naples | Cardinal, Archbishop of Capua, Italy |
| 24 Feb | | Born | Francesco de' Marchesi Canali † | Rieti | Bishop of Pesaro, Italy |
| 29 Feb | 69.3 | Died | Pasquale Acquaviva d’Aragona † | Cardinal, Cardinal-Deacon of S. Eustachio |
| Born | Louis-François-Auguste de Rohan-Chabot † | Paris | Cardinal, Archbishop of Besançon, France |
| 4 Mar | 74.7 | Died | Antonio Eugenio Visconti † | Cardinal, Cardinal-Priest of S. Croce in Gerusalemme |
| 7 Mar | 48.2 | Appointed | José Nicolau de Azevedo Coutinho Gentil † | Prelate of Goiás, Brazil |
| Born | Adriano Fieschi † | Genoa | Cardinal, Cardinal-Priest of S. Maria della Vittoria |
| 8 Mar | 23.2 | Ordained Priest | Francisco Ferreira de Azevedo † | Priest | Bishop of Goiás, Brazil |
| 62.2 | Resigned | Jose Martinez Palomino y Lopez de Lorena † | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México | Bishop of Foreign Diocese |
| 9 Mar | 41.9 | Appointed | Louis-Mathias-Joseph de Barral † | Coadjutor Bishop of Troyes, France | Archbishop Emeritus of Tours, France |
| 10 Mar | 63.3 | Appointed | Vincenzo Maria Altieri † | Cardinal-Deacon of S. Eustachio | Cardinal, |
| 56.8 | Appointed | Fernando Cardiñanos, O.F.M. † | Bishop of Comayagua, Honduras |
| 44.1 | Appointed | Karl Theodor Freiherr von Dalberg † | Titular Archbishop of Tarsus | Bishop of Worms, Germany |
| 44.1 | Confirmed | Karl Theodor Freiherr von Dalberg † | Coadjutor Bishop of Worms, Germany | Bishop |
| 73.1 | Installed | Raniero Finocchietti † | Cardinal-Deacon of S. Angelo in Pescheria | Cardinal, Cardinal-Deacon of S. Agata de’ Goti |
| 53.7 | Appointed | José Joaquín Granados y Gálvez, O.F.M. † | Bishop of Sonora, Sonora, México | Bishop of Durango, México |
| 62.6 | Appointed | Santiago José Echaverría Nieto de Osorio y Elguera † | Bishop of Tlaxcala, Tlaxcala, México |
| 60.4 | Confirmed | Etienne-Charles de Loménie de Brienne † | Cardinal, Archbishop of Sens, France |
| 62.4 | Appointed | José Francisco Miguel António de Mendonça Valdereis † | Cardinal, Patriarch of Lisboa, Portugal |
| 56.2 | Confirmed | Angel Mariano Moscoso Pérez y Oblitas † | Bishop of Córdoba (Tucumán), Argentina |
| Born | Giuseppe Sanguettola † | Milan | Bishop of Crema, Italy |
| 37.2 | Appointed | François-Marie-Fortuné de Vintimille † | Bishop of Carcassonne, France | Bishop Emeritus |
| 15 Mar | 60.8 | Died | Ludwig Joseph Freiherr von Welden auf Laubheim und Hohenaltingen † | Bishop of Freising, Germany |
| 17 Mar | 56.9 | Died | Ernest Johann Nepomuk Reichsgraf von Herberstein (Herbstein) † | Bishop of Linz, Austria |
| 29 Mar | | Born | Gaetano Baluffi † | Ancona | Cardinal, Bishop of Imola, Italy |
| 30 Mar | 37.2 | Ordained Bishop | Alexandre-Henri de Chauvigny de Blot † | Bishop of Lombez, France |
| 44.1 | Appointed | François de Fontanges † | Archbishop of Toulouse, France | Bishop of Autun, France |
| Apr | | Ordained Bishop | Thomas O’Connor † | Bishop of Achonry, Ireland |
| 6 Apr | 47.4 | Appointed | Jean-Auguste de Chastenet de Puységur † | Archbishop of Bourges, France | Archbishop Emeritus |
| 7 Apr | 60.5 | Appointed | Eustaquio Azara, O.S.B. † | Bishop of Ibiza, Spain | Bishop of Barcelona, Spain |
| Appointed | Pietro Craveri, O.F.M. † | Bishop of Galtelli-Nuoro, Italy |
| 53.0 | Appointed | Frantisek de Paula Herzan von Harras † | Cardinal-Priest of S. Croce in Gerusalemme | Cardinal, Bishop of Szombathely, Hungary |
| 49.0 | Appointed | Bernardino Marini, C.R.L. † | Bishop of Treviso, Italy |
| 62.5 | Elevated to Cardinal | José Francisco Miguel António de Mendonça Valdereis † | Cardinal, Patriarch of Lisboa, Portugal |
| 9 Apr | | Born | Mariano Venturi † | Costacciaro | Bishop of Veroli, Italy |
| 10 Apr | | Died | Théodose Dahan † | Patriarch of Antiochia {Antioch} (Melkite), Syria |
| 17 Apr | 49.0 | Installed | Pierre de Séguiran † | Bishop of Nevers, France |
| 21 Apr | | Appointed | Mathieu Righet † | Vicar Apostolic of Alexandria {Alessandria} (Coptic), Egypt |
| 27 Apr | 46.2 | Ordained Bishop | Michel Leopold Freiherr Brigido von Marenfels und Bresoviz † | Bishop of Ljubljana, Slovenia | Bishop of Spiš, Slovakia |
| 2 May | 74.7 | Died | Antoine de Malvin de Montazet † | Archbishop of Lyon, France |
| 76.2 | Died | Francesco Pettorelli Lalatta † | Bishop of Parma, Italy |
| 9 May | 40.1 | Appointed | Joseph Anton Gall † | Bishop of Linz, Austria |
| 12 May | 54.0 | Appointed | Yves-Alexandre de Marbeuf † | Archbishop of Lyon, France |
| 16 May | | Born | Francesco Iavarone † | Napoli | Bishop of Sant’Agata de’ Goti, Italy |
| 17 May | 47.5 | Ordained Priest | Joseph Christian Franz de Paula Prinz zu Hohenlohe-Waldenburg-Bartenstein † | Priest of Wrocław, Poland | Bishop |
| 26 May | 48.6 | Appointed | Max Polykarp Reichsgraf von Törring-Jettenbach † | Bishop of Freising, Germany | Bishop of Regensburg, Germany |
| 28 May | 82.4 | Died | Louis-Sextius de Jarente de La Bruyère † | Bishop of Orléans, France |
| 42.0 | Succeeded | Louis-François-Alexandre de Jarente de Senas d'Orgeval † | Bishop of Orléans, France | Bishop Emeritus |
| 1 Jun | 60.7 | Ordained Bishop | Eustaquio Azara, O.S.B. † | Bishop of Ibiza, Spain | Bishop of Barcelona, Spain |
| 24.6 | Ordained Priest | Benedict Joseph Flaget, P.S.S. † | Priest of Society of Priests of St. Sulpice | Bishop of Louisville, Kentucky, USA |
| 3 Jun | | Born | Buenaventura Codina Augerolas, C.M. † | Hostabrich | Bishop of Islas Canarias {Canary Islands}, Spain |
| 4 Jun | 78.1 | Died | Louis-Philippe-François Mariauchau d'Esglis † | Bishop of Québec, Québec, Canada |
| 10 Jun | | Appointed | John Cruise † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 12 Jun | 49.3 | Succeeded | Jean-François Hubert † | Bishop of Québec, Québec, Canada | Bishop Emeritus |
| 18 Jun | 44.4 | Appointed | Karl Theodor Freiherr von Dalberg † | Coadjutor Bishop of Konstanz {Constance}, Germany | Bishop of Worms, Germany |
| Born | Nicolás Luis Lezo Garro † | Madrid, Spain | Titular Archbishop of Seleucia in Isauria |
| 26 Jun | | Born | Henry Hughes, O.F.M. † | Wexford, Ireland | Vicar Apostolic Emeritus of Gibraltar, Gibraltar |