| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 48.0 | Ordained Priest | Léon de Beaumont † | Priest | Bishop of Saintes, France |
| 23.8 | Ordained Priest | Johann Joseph Anton Blatter † | Priest of Sion {Sitten}, Switzerland | Bishop |
| Born | Jean-Louis du Buisson de Beauteville † | Mirepoix | Bishop of Alès (Alais), France |
| Born | Miguel Cilieza y Velasco † | San Luis Potosi | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| Born | Jean-Louis du Lau d’Allemans † | Périgord | Bishop of Digne, France |
| 67.2 | Died | Pedro de Foios (Foyos), O.S.A. † | Auxiliary Bishop of Lisboa {Lisbon}, Portugal |
| Born | Giacinto Giustiniani, O.P. † | Scio | Bishop Emeritus of Syros (e Milos), Greece |
| 62.8 | Died | Francesco Gori † | Bishop of Sessa Aurunca, Italy |
| 26.9 | Ordained Priest | Johann Christian Adam von Königsfeld † | Priest of Regensburg, Germany | Titular Bishop of Erythrae |
| Born | Jean-Baptiste-Joseph de Méallet de Fargues † | Saint-Flour | Bishop of Saint-Claude, France |
| 45.0 | Ordained Bishop | José Aparicio y Navarro † | Bishop of Astorga, Spain |
| Born | Plaicart de Raigecourt † | Nancy | Bishop of Aire, France |
| 24.0 | Ordained Priest | François-Joseph Robuste † | Priest | Auxiliary Bishop of Reims, France |
| Died | Josyf Szumlański † | Bishop of Lviv (Ukrainian), Ukraine |
| 57.4 | Died | Nicolaus Ventriglia † | Bishop of Acerno, Italy |
| Died | Leo Zaleski † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| Jan | | Born | Henri-Marie du Breuil de Pontbriand † | Pleurtuit, France | Bishop of Québec, Canada |
| 10 Jan | 70.0 | Died | Antonio de Brizuela y Salamanca † | Bishop of Jaén, Spain |
| 12 Jan | | Born | Johann Friedrich von Lasser † | Mainz | Auxiliary Bishop of Mainz, Germany |
| 14 Jan | 83.0 | Died | Alexander Dunbar Winchester (Winster) † | Prefect Emeritus of Scotland, Great Britain |
| 17 Jan | 39.0 | Selected | Jean-Jacques de Verthamon † | Bishop of (Saint-Lizier de) Couserans, France |
| 18 Jan | 81.6 | Died | Daniel de Cosnac † | Archbishop of Aix, France |
| 76.0 | Died | Jean-Baptiste de Sade † | Bishop of Cavaillon, France |
| 19 Jan | | Appointed | Raimondo Gallani, O.P. † | Titular Archbishop of Ancyra | Archbishop of Dubrovnik (Ragusa), Croatia |
| 28 Jan | | Born | Jean-François-Joseph de Rochechouard de Faudoas † | Toulouse | Cardinal, Bishop of Laon, France |
| Feb | 75.1 | Died | Stefano Ghirardelli † | Bishop of Alatri, Italy |
| 62.2 | Died | Francesco Antonio Giannone † | Bishop of Boiano, Italy |
| 3 Feb | | Born | Louis-Albert de Lezay-Marnesia † | Lons-le-Saulnier | Bishop Emeritus of Evreux, France |
| 8 Feb | 79.2 | Died | Matthias Starck † | Auxiliary Bishop Emeritus of Mainz, Germany |
| 10 Feb | 47.1 | Selected | Bernard-François de Poudenx de Castillon † | Bishop of Marseille, France |
| 52.2 | Selected | Charles-Gaspard-Guillaume de Vintimille du Luc † | Archbishop of Aix, France | Archbishop of Paris, France |
| 11 Feb | 78.1 | Died | François Letellier † | Bishop of Digne, France |
| 16 Feb | | Born | Józef Julian Sapieha † | Gedanen | Coadjutor Bishop of Vilnius, Lithuania |
| Born | Adam Friedrich von Seinsheim † | Regensburg | Bishop of Würzburg, Germany |
| 19 Feb | | Born | Giovanni Hieronymo Gradenigo, C.R. † | Venezia | Archbishop of Udine, Italy |
| 20 Feb | 65.1 | Ordained Bishop | Manuel de Santo Tomás Mendoza, O.P. † | Bishop of Almería, Spain | Bishop of Málaga, Spain |
| 23 Feb | | Born | Gioacchino Martínez † | S. Angelo | Bishop of Avellino e Frigento, Italy |
| 25 Feb | 22.9 | Ordained Priest | Ferdinando Agostino Bernabei, O.P. † | Priest of Order of Friars Preachers | Bishop of Osimo e Cingoli, Italy |
| 71.1 | Resigned | Tiberio Muscettola, C.O. † | Archbishop of Manfredonia, Italy | Archbishop Emeritus |
| 26 Feb | 35.3 | Ordained Priest | Girolamo Mattei † | Priest | Archbishop Emeritus of Fermo, Italy |
| 27 Feb | 49.7 | Confirmed | Claude-Maur d’Aubigné † | Archbishop of Rouen, France |
| 35.3 | Appointed | Girolamo Mattei † | Titular Archbishop of Nicomedia | Archbishop Emeritus of Fermo, Italy |
| 29 Feb | 26.1 | Ordained Priest | Domenico Antonio Peronaci † | Priest | Bishop of Umbriatico (Umbriaticum), Italy |
| Mar | 58.1 | Died | Benito Noriega, O.F.M. † | Bishop of Acerra, Italy |
| 3 Mar | 47.2 | Died | Sigmund Carl von Castel-Barco † | Bishop of Chiemsee, Germany |
| 4 Mar | 44.3 | Ordained Bishop | Imre Esterházy, O.S.P.P.E. † | Bishop of Vác, Hungary | Archbishop of Esztergom, Hungary |
| 12 Mar | 48.3 | Appointed | Stephanus Cupilli, C.R.S. † | Archbishop of Split (Spalato), Croatia |
| 34.2 | Appointed | Giovanni De Lerma † | Archbishop of Manfredonia, Italy | Archbishop Emeritus |
| 61.2 | Appointed | Andreas Matusseck † | Bishop of Knin, Croatia |
| 49.2 | Confirmed | Ennemond Alleman de Montmartin † | Bishop of Grenoble, France |
| 46.1 | Appointed | Johann Adam Nieberlein † | Auxiliary Bishop of Eichstätt, Germany |
| 46.1 | Appointed | Johann Adam Nieberlein † | Titular Bishop of Dioclea | Auxiliary Bishop of Eichstätt, Germany |
| 62.0 | Appointed | Johann Kasimir Röls † | Auxiliary Bishop of Augsburg, Germany |
| 62.0 | Appointed | Johann Kasimir Röls † | Titular Bishop of Amyclae | Auxiliary Bishop of Augsburg, Germany |
| 68.2 | Died | Tommaso Antonio Scotti † | Archbishop of Dubrovnik (Ragusa), Croatia |
| 13 Mar | | Born | Alberto Maria Capobianco, O.P. † | Brundusin | Archbishop Emeritus of Reggio Calabria, Italy |
| 18 Mar | 45.2 | Ordained Bishop | Francisco Laynez, S.J. † | Titular Bishop of Sozopolis in Pisidia | Bishop of São Tomé of Meliapore, India |
| 49.9 | Died | Luigi Ruzzini † | Bishop of Bergamo, Italy |
| 24 Mar | 24.1 | Ordained Priest | Paolo Collia, O.M. † | Priest of Order of the Minims | Bishop of Nicotera, Italy |
| 26 Mar | 54.5 | Appointed | Pietro Paolo Calorio, C.R.S. † | Bishop of Trogir (Traù), Croatia | Bishop of Krk (Veglia), Croatia |
| 37.2 | Confirmed | Charles-François de Châteauneuf de Rochebonne † | Bishop of Noyon, France | Archbishop of Lyon, France |
| 39.2 | Confirmed | Jean-Jacques de Verthamon † | Bishop of (Saint-Lizier de) Couserans, France |
| 27 Mar | | Born | José Vicente Díaz Bravo, O. Carm. † | Tudela, Spain | Bishop of Durango, México |
| Born | Antonio Gómez de la Torre y Jaraveitia † | Bilbao | Bishop of Jaén, Spain |
| Apr | | Born | Francesco Pantuliano † | Polla | Bishop of Policastro, Italy |
| 1 Apr | 48.5 | Appointed | Johann Sigmund von Kuenburg † | Bishop of Chiemsee, Germany |
| Born | Ludovico Sabatini † | Napoli | Bishop of L’Aquila, Italy |
| 3 Apr | 48.3 | Installed | François-Gaspard de La Mer de Matha † | Bishop of Aire, France |
| 54.0 | Ordained Priest | John Wallace † | Priest | Coadjutor Vicar Apostolic of Lowland District, Scotland, Great Britain |
| 8 Apr | 71.8 | Died | Francesco Nerli (Jr.) † | Cardinal, Bishop Emeritus of Assisi, Italy |
| 11 Apr | 39.1 | Selected | Philipp Carl von Fürstenberg † | Bishop of Lavant, Slovenia |
| 17 Apr | 53.3 | Selected | Henri du Puget † | Bishop of Digne, France |
| 20 Apr | | Born | Innocenzo Gorgoni, O.S.B. † | Galatina | President Emeritus of Pontifical Ecclesiastical Academy, Roman Curia |
| 21 Apr | 43.3 | Installed | Luis Francisco Romero † | Bishop of Santiago de Chile | Archbishop of La Plata o Charcas, Bolivia |
| 23 Apr | | Born | Claude Humbert de Rolland † | Marigny | Archbishop of Tarentaise (Moûtiers-en-Tarentaise), France |
| 26 Apr | 70.3 | Resigned | Domenico De Zaulis (Zaoli) † | Bishop of Veroli, Italy | Bishop Emeritus |
| 29 Apr | 46.2 | Ordained Bishop | Johann Adam Nieberlein † | Titular Bishop of Dioclea | Auxiliary Bishop of Eichstätt, Germany |
| Born | Filippo Maria Pirelli † | Ariano, Italy | Cardinal, Cardinal-Priest of San Crisogono |
| 30 Apr | 44.3 | Appointed | Ludovico Anselmo Gualtieri † | Bishop of Veroli, Italy | Bishop of Todi, Italy |
| 48.1 | Installed | Filippo Antonio Gualterio † | Cardinal-Priest of San Crisogono | Cardinal, Bishop Emeritus of Todi, Italy |
| 80.6 | Appointed | Galeazzo Marescotti † | Cardinal-Priest of San Lorenzo in Lucina | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 47.3 | Confirmed | Pierre de Baglion de la Salle de Saillant † | Bishop of Mende, France |
| 65.1 | Appointed | Fabrizio Spada † | Cardinal-Priest of Santa Prassede | Cardinal, Cardinal-Bishop of Palestrina |
| May | | Born | Josephus Aluffi † | Reatin | Bishop Emeritus of Bagnoregio (Bagnorea), Italy |
| 79.3 | Died | Petrus Barugi † | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| Born | Jan Dominik Łopaciński † | | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 1 May | 39.1 | Ordained Priest | Philipp Carl von Fürstenberg † | Priest of Lavant, Slovenia | Bishop |
| 44.3 | Ordained Bishop | Francisco Valero y Losa † | Bishop of Badajoz, Spain | Archbishop of Toledo, Spain |
| 4 May | 56.3 | Resigned | Charles Maigrot, M.E.P. † | Vicar Apostolic of Fo-Kien, China | Vicar Apostolic Emeritus |
| 6 May | 85.0 | Died | Bl. François de Laval de Montmorency † | Bishop Emeritus of Québec, Canada |
| 49.3 | Ordained Bishop | Ennemond Alleman de Montmartin † | Bishop of Grenoble, France |
| Born | Aldrago Antonio de Piccardi † | Trieste | Bishop of Senj (-Modruš), Croatia |
| 8 May | | Born | Girolamo Colonna di Sciarra † | Rome, Italy | Cardinal, Cardinal-Deacon of Sant’Agata de’ Goti |
| 12 May | 45.7 | Appointed | Antonio Baistrocchi, O. Carm. † | Vicar Apostolic of Great Moghul (Mughals), India |
| 45.7 | Appointed | Antonio Baistrocchi, O. Carm. † | Titular Bishop of Anastasiopolis | Vicar Apostolic of Great Moghul (Mughals), India |
| 13 May | | Born | Max Friedrich von Königsegg und Rothenfels † | Köln | Archbishop of Köln {Cologne}, Germany |
| 14 May | 45.4 | Appointed | Muzio Gaeta (Sr.) † | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine | Archbishop of Bari (-Canosa), Italy |
| 57.9 | Appointed | Giuseppe Guerra † | Bishop of Alatri, Italy | Bishop Emeritus |
| 66.4 | Appointed | Diego Morcillo Rubio de Suñón de Robledo, O.SS.T. † | Bishop of La Paz, Bolivia | Archbishop of Lima, Peru |
| 47.4 | Confirmed | Bernard-François de Poudenx de Castillon † | Bishop of Marseille, France |
| 39.2 | Appointed | Pietro Priuli † | Cardinal, Bishop of Bergamo, Italy |
| 47.7 | Appointed | Angelo Rendina † | Bishop of Boiano, Italy |
| 52.5 | Confirmed | Charles-Gaspard-Guillaume de Vintimille du Luc † | Archbishop of Aix, France | Archbishop of Paris, France |
| 15 May | 59.4 | Died | Manuel de Escalante Colombres y Mendoza † | Bishop of Michoacán, México |
| 17 May | 26.8 | Ordained Priest | Nicolò Carmine Falcone † | Priest | Archbishop of Santa Severina, Italy |
| 20 May | 62.2 | Ordained Bishop | Johann Kasimir Röls † | Titular Bishop of Amyclae | Auxiliary Bishop of Augsburg, Germany |
| 25 May | | Born | Giuseppe Tomaso de Rossi † | Ceva | Bishop of Alessandria (della Paglia), Italy |
| 26 May | 43.5 | Installed | Réné-François Beauvau de Rivau † | Bishop of Tournai {Doornik}, Belgium | Archbishop of Narbonne, France |
| 30 May | 39.2 | Confirmed | Philipp Carl von Fürstenberg † | Bishop of Lavant, Slovenia |
| 31 May | 75.2 | Died | Pietro Paolo Gerardi † | Bishop of Anagni, Italy |
| 2 Jun | 24.0 | Ordained Priest | Juan Francisco Navarro Salvador y Gilabert † | Priest | Bishop of Albarracin, Spain |
| 29.4 | Ordained Priest | Carlo Felice Sanmartino † | Priest | Bishop of Mondovi, Italy |
| 4 Jun | 39.6 | Died | Márton Brajkovićs † | Bishop of Zagreb (Agram), Croatia |
| 5 Jun | | Born | Johann Philipp Karl Anton von Fechenbach zu Laudenbach † | Würzburg | Titular Bishop of Taenarum |
| 7 Jun | | Born | Giovanni de Vita † | Benevento | Bishop of Rieti, Italy |
| 10 Jun | 25.4 | Ordained Priest | Siméon VII Awad † | Priest | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| 24 Jun | 74.0 | Died | Pietro Corbelli † | Bishop of Segni, Italy |
| 47.5 | Ordained Bishop | Pierre de Baglion de la Salle de Saillant † | Bishop of Mende, France |
| 39.5 | Ordained Bishop | Jean-Jacques de Verthamon † | Bishop of (Saint-Lizier de) Couserans, France |
| 28 Jun | 43.5 | Selected | Juan Benito Garret y Arlovi, O. Praem. † | Bishop of Nicaragua |
| 78.5 | Died | Melchor de Liñán y Cisneros † | Archbishop of Lima, Peru |