| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 23.5 | Ordained Priest | Louis-Joseph Adhémar de Monteil de Grignan † | Priest | Bishop of Carcassonne, France |
| 25.7 | Ordained Priest | Basilio Brollo, O.F.M. Obs. † | Priest of Order of Observant Friars Minor | Vicar Apostolic of Chansi and Chensi, China |
| Died | Jan Bużeński † | Auxiliary Bishop of Gniezno, Poland |
| Born | Giovanni Battista Costantino † | | Bishop of Castro di Puglia, Italy |
| 36.0 | Ordained Bishop | Stanisław Kazimierz Dąmbski † | Bishop of Chełm, Poland | Bishop of Kraków, Poland |
| Born | Jean-Armand de La Voue de Tourouvre † | | Bishop of Rodez, France |
| 24.0 | Ordained Priest | Bernard Donogher † | Priest | Vicar Apostolic of Ardagh (and Clonmacnois), Ireland |
| Born | Jan-Baptist de Smet † | | Bishop of Gent {Ghent, Gand}, Belgium |
| 24.2 | Ordained Priest | Johann Franz von Eckher von Kapfing und Liechteneck † | Priest | Bishop of Freising, Germany |
| 69.5 | Resigned | Léonor de Goyon de Matignon (I) † | Bishop of Lisieux, France | Bishop Emeritus |
| Born | Denis-Alexandre Le Blanc, C.R.S.A. † | | Bishop of Sarlat, France |
| Appointed | Butros Makluf † | Bishop of Cyprus (Maronite) |
| Born | Nicolas de Malezieu † | | Bishop of Lavaur, France |
| 20.0 | Ordained Priest | Donagh McCarthy † | Priest | Bishop of Cork and Cloyne, Ireland |
| 16.0 | Professed | Gerolamo Ubertino Provana, C.R. † | Member of Congregation of Clerics Regular | Bishop of Alba (Pompea), Italy |
| Born | Pietro Scurra † | | Archbishop of Durrës (Durazzo), Albania |
| 17.0 | Ordained Priest | Francisco Solís Hervás, O. de M. † | Priest of Order of Our Lady of Mercy | Bishop of Córdoba, Spain |
| Born | José de Toro y Zambrano † | | Bishop of Concepción, Chile |
| Born | Ernst August von Braunschweig-Lüneburg † | | Bishop of Osnabrück, Germany |
| Jan | 28.0 | Ordained Priest | Andrew Giffard † | Priest of England (and Wales), Great Britain | Priest |
| 30.7 | Resigned | Fabrizio Spada † | Apostolic Nuncio to Savoy | Cardinal, Cardinal-Bishop of Palestrina |
| 2 Jan | 57.0 | Installed | Kazimierz Florian Czartoryski † | Archbishop of Gniezno, Poland |
| Born | Andrea Duranti † | | Titular Bishop of Chytri |
| 3 Jan | 59.0 | Appointed | Gregory (Grégoire) Luo Wenzao (Lou, López), O.P. † | Vicar Apostolic of Nanking [Nanjing], China | Bishop of Nanking [Nanjing], China |
| 59.0 | Appointed | Gregory (Grégoire) Luo Wenzao (Lou, López), O.P. † | Titular Bishop of Basilinopolis | Bishop of Nanking [Nanjing], China |
| 6 Jan | 30.8 | Appointed | Fabrizio Spada † | Apostolic Nuncio to France | Cardinal, Cardinal-Bishop of Palestrina |
| 12 Jan | 42.0 | Died | Antonio do Espirito Santo, O.C.D. † | Bishop of Angola e Congo |
| 14 Jan | | Born | Giovanni Battista Sanna † | | Bishop of Ales e Terralba, Italy |
| 15 Jan | 49.0 | Appointed | Pietro Alberini † | Titular Archbishop of Nicomedia |
| 57.0 | Installed | Pietro Bassdonna † | Cardinal, Cardinal-Deacon of Santa Maria in Domnica |
| 21 Jan | | Born | Stephan von Clodh (Cloth), O.S.B. † | | Auxiliary Bishop of Fulda, Germany |
| 53.0 | Died | Matteo di Génnaro † | Archbishop of Reggio Calabria, Italy |
| 28 Jan | 49.0 | Ordained Bishop | Johann Brassert † | Titular Bishop of Daulia | Auxiliary Bishop of Speyer, Germany |
| 32.8 | Ordained Bishop | Adrian von Riedmatten (V) † | Bishop of Sion {Sitten}, Switzerland |
| 44.0 | Ordained Bishop | Johannes Schmitzberger, O.S.B. † | Titular Bishop of Helenopolis in Bithynia | Auxiliary Bishop of Wien, Austria |
| 29 Jan | | Born | Tommaso Alessio de’ Rossi † | | Bishop of Teramo, Italy |
| 30 Jan | 64.0 | Died | Matteo Benlich, O.F.M. † | Bishop of Beograd {Belgrade}, Serbia |
| 4 Feb | 16.0 | Professed | Vincenzo Ferrero, O.P. † | Member of Order of Friars Preachers | Bishop of Lucera, Italy |
| 46.0 | Ordained Bishop | René Le Sauvage † | Bishop of Lavaur, France |
| 8 Feb | 73.1 | Died | Fabio dos Reis Fernandes, O. Carm. † | Bishop of Santiago de Cabo Verde |
| 11 Feb | 23.1 | Ordained Deacon | Vit Christophor Seipel, O. Praem. † | Deacon of Order of the Canons Regular of Premontre; Norbertines | Auxiliary Bishop of Praha {Prague}, Czechia |
| 12 Feb | 60.8 | Died | Juan López, O.P. † | Archbishop of Manila, Philippines |
| 13 Feb | 23.1 | Ordained Priest | Angelus d’Ongnies et d’Estrées, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Roermond, Netherlands |
| 14 Feb | | Born | Gaspare Pizzolanti, O. Carm. † | | Bishop of Cervia, Italy |
| 17 Feb | 24.8 | Ordained Priest | Diego Ibáñez de la Madrid y Bustamente † | Priest | Bishop of Ceuta, Spain |
| 19 Feb | 43.7 | Appointed | Vincenzo Bonifacio † | Titular Bishop of Famagusta | Bishop Emeritus |
| 37.0 | Appointed | Manuel Fernández de Santa Cruz y Sahagún † | Bishop of Guadalajara, Jalisco, México | Bishop of Tlaxcala (Puebla de los Angeles), México |
| 46.1 | Appointed | Fabio Guinigi † | Archbishop of Ravenna, Italy |
| 50.6 | Resigned | Paluzzo Paluzzi Altieri Degli Albertoni † | Archbishop of Ravenna, Italy | Cardinal, Archbishop Emeritus |
| 30.4 | Appointed | Vincenzo Ragni, O.S.B. † | Bishop of Oppido Mamertina, Italy |
| 44.3 | Appointed | Muzio Soriano † | Archbishop of Santa Severina, Italy |
| 23 Feb | 72.1 | Selected | Jaime Mas † | Bishop of Vic, Spain |
| 24 Feb | 43.7 | Ordained Bishop | Vincenzo Bonifacio † | Titular Bishop of Famagusta | Bishop Emeritus |
| 46.1 | Ordained Bishop | Fabio Guinigi † | Archbishop of Ravenna, Italy |
| Appointed | Polykarp Wilhelm von Kuenburg † | Bishop of Gurk, Austria |
| 27 Feb | 77.1 | Died | Bartolomé de Foncalda (Fontcalda), O.S.A. † | Bishop of Huesca, Spain |
| 4 Mar | 49.1 | Ordained Bishop | Pietro Alberini † | Titular Archbishop of Nicomedia |
| 30.5 | Ordained Bishop | Vincenzo Ragni, O.S.B. † | Bishop of Oppido Mamertina, Italy |
| 44.3 | Ordained Bishop | Muzio Soriano † | Archbishop of Santa Severina, Italy |
| 31.5 | Ordained Bishop | Johann Friedrich von Waldstein, O.Cr. † | Bishop of Hradec Králové, Czechia | Archbishop of Praha {Prague}, Czechia |
| 5 Mar | | Died | Raffaele de Palma, O.F.M. Conv. † | Bishop of Oria, Italy |
| Born | Friedrich Karl von Schönborn † | | Bishop of Würzburg, Germany |
| 6 Mar | 78.1 | Died | Pietro Lanfranconi, O.S.A. † | Bishop of Terni, Italy |
| 10 Mar | 49.1 | Appointed | Pietro Alberini † | Apostolic Nuncio to Savoy | Titular Archbishop of Nicomedia |
| 49.1 | Appointed | Johann Brassert † | Auxiliary Bishop of Mainz, Germany | Auxiliary Bishop of Speyer, Germany |
| 23.3 | Ordained Priest | Raimondo Ferretti † | Priest | Archbishop of Ravenna, Italy |
| 43.0 | Ordained Deacon | Francesco Picarelli † | Deacon | Bishop of Narni, Italy |
| 12 Mar | 40.1 | Appointed | Giuseppe Bologna † | Archbishop of Benevento, Italy | Archbishop of Capua, Italy |
| 42.9 | Appointed | Pierre de Bonzi † | Cardinal, Archbishop of Narbonne, France |
| 46.1 | Appointed | Marcos Bravo de la Serna Manrique † | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 60.3 | Appointed | Joannes Lucidus Cataneo † | Bishop of Mantova, Italy |
| 64.1 | Appointed | Filippo Cesarini † | Bishop of Nola, Italy |
| 48.1 | Confirmed | Simón García Pedrejón, O.F.M. Obs. † | Bishop of Tuy, Spain | Bishop of Oviedo, Spain |
| 72.1 | Appointed | Jan Gembicki † | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 13 Mar | 51.1 | Succeeded | Bonawentura Dobrogost Madaliński † | Bishop of Płock, Poland | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| Born | Giovanni Battista Senzasoni † | | Titular Bishop of Olympus (Olimpus) |
| 16 Mar | 68.2 | Died | Claude Ruffier † | Bishop of Saint-Paul-Trois-Châteaux, France |
| 19 Mar | 25.4 | Ordained Priest | Giuseppe Placido De Pace † | Priest | Bishop of Oppido Mamertina, Italy |
| Born | Joseph de Guyon de Crochans † | | Archbishop of Avignon, France |
| 20 Mar | | Born | Carlo Maria Giuseppe Fornari † | | Bishop Emeritus of Albenga, Italy |
| 21 Mar | | Born | José Flores Osorio † | | Bishop of Cuenca, Spain |
| 24 Mar | 40.1 | Ordained Priest | Johann Hugo von Orsbeck † | Priest | Archbishop of Trier, Germany |
| 43.0 | Ordained Priest | Francesco Picarelli † | Priest | Bishop of Narni, Italy |
| 25.6 | Ordained Priest | Bartolomeo Rosa † | Priest | Bishop of Lavello, Italy |
| 25 Mar | 36.8 | Ordained Bishop | Louis Laneau, M.E.P. † | Titular Bishop of Metellopolis | Vicar Apostolic of Siam, Thailand |
| 69.1 | Died | Giacinto Tarugi (Torisi), O.P. † | Bishop of Venosa, Italy |
| 31 Mar | 30.2 | Confirmed | Franz Caspar von Stadion † | Bishop of Lavant, Slovenia |
| 1 Apr | 51.2 | Ordained Bishop | Alexander da Silva † | Bishop of Elvas, Portugal |
| 42.7 | Ordained Bishop | Juan Bautista Sorribas, O. Carm. † | Bishop of Ampurias e Civita, Italy |
| 30.2 | Ordained Bishop | Franz Caspar von Stadion † | Bishop of Lavant, Slovenia |
| 2 Apr | | Ordained Bishop | Polykarp Wilhelm von Kuenburg † | Bishop of Gurk, Austria |
| 3 Apr | 77.3 | Died | Gabriel Adarzo de Santander y Martínez de Viaín, O. de M. † | Archbishop of Otranto, Italy |
| 8 Apr | 60.4 | Ordained Bishop | Joannes Lucidus Cataneo † | Bishop of Mantova, Italy |
| 13 Apr | 76.2 | Died | Giovanni Battista Imperiali, C.R. † | Bishop of Aleria, France |
| 16 Apr | 62.2 | Confirmed | Andrés Aznar y Naves, O.S.A. † | Bishop of Teruel, Spain |
| 46.7 | Confirmed | Juan de Ortega Cano Montañez y Patiño † | Bishop of Durango, México | Archbishop of México, Federal District |
| 50.2 | Appointed | Manoel a Nativitate do Nascimento, O.S.H. † | Bishop of São Tomé e Príncipe |
| 56.5 | Appointed | Lothar Friedrich von Metternich-Burscheid † | Bishop of Worms, Germany | Archbishop of Mainz, Germany |
| 54.2 | Appointed | Ramón Sureda Santa Cilia † | Auxiliary Bishop of Mallorca, Spain |
| 54.2 | Appointed | Ramón Sureda Santa Cilia † | Titular Bishop of Oropus | Auxiliary Bishop of Mallorca, Spain |
| 17 Apr | | Born | Nicola Negroni † | | Titular Archbishop of Sebastea |
| 22 Apr | | Born | Cosimo Torelli † | | Bishop of Camerino, Italy |
| 50.7 | Ordained Bishop | Pedro Tris Lacal, O. Carm. † | Bishop of Albarracin, Spain |
| 29 Apr | 59.3 | Died | Pietro Martire Rusca, O.F.M. Conv. † | Bishop of Caorle, Italy |
| 6 May | 69.2 | Installed | Juan de Almoguera, O.SS.T. † | Archbishop of Lima, Peru |
| 7 May | 46.0 | Appointed | Giovanni Battista Desio † | Bishop of Venosa, Italy |
| 51.3 | Appointed | Raffaele Riario Di Saono, O.S.B. † | Bishop of Montepeloso, Italy |
| 86.3 | Died | Wolther Heinrich von Strevesdorff, O.E.S.A. † | Auxiliary Bishop of Mainz, Germany |
| 12 May | 64.3 | Died | Francesco Maria Annoni, C.R. † | Bishop of Muro Lucano, Italy |
| 14 May | | Born | Archangelus Feni, O.P. † | | Former Archbishop-Elect of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 15 May | 57.3 | Died | Kazimierz Florian Czartoryski † | Archbishop of Gniezno, Poland |
| 16 May | 46.0 | Ordained Bishop | Giovanni Battista Desio † | Bishop of Venosa, Italy |
| 51.3 | Ordained Bishop | Raffaele Riario Di Saono, O.S.B. † | Bishop of Montepeloso, Italy |
| 17 May | 54.3 | Died | Francisco José Crespos de Escobar † | Bishop of Agrigento (Girgenti), Italy |
| Born | Francisco Mendigaño Armendáriz † | | Archbishop of Santo Domingo, Dominican Republic |
| 19 May | 25.3 | Ordained Priest | Giuseppe Saoli Bargagli, C.R.M. † | Priest of Clerics Regular Minor | Bishop of Noli, Italy |
| Installed | Francisco Verdín y Molina † | Bishop of Michoacán, México |
| 21 May | 68.3 | Died | Gabriel (Havrylo) Kolenda, O.S.B.M. † | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 39.3 | Succeeded | Kyprian Żochowski (Zhokhovskyj), O.S.B.M. † | Archbishop of Polotsk (Połock)-Vitebsk (Ukrainian), Belarus | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 39.3 | Succeeded | Kyprian Żochowski (Zhokhovskyj), O.S.B.M. † | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 22 May | 75.1 | Died | Francisco de Gamboa, O.S.A. † | Archbishop of Zaragoza, Spain |
| 3 Jun | 50.4 | Ordained Bishop | Juan Aparicio Navarro † | Bishop of Lugo, Spain | Bishop of León, Spain |
| 4 Jun | 89.4 | Died | Giovanni Agostino Marliani † | Bishop of Reggio Emilia, Italy |
| 6 Jun | 34.4 | Selected | Luc d’Acquin † | Bishop of Saint-Paul-Trois-Châteaux, France | Bishop Emeritus of Fréjus, France |
| 7 Jun | | Born | Antonio Maria Pallavicini † | | Titular Patriarch of Antiochia {Antioch} |
| 9 Jun | 58.4 | Died | Alfonso Bravo de Laguna, O.F.M. † | Bishop of Nicaragua |
| 11 Jun | 34.4 | Confirmed | Luc d’Acquin † | Bishop of Saint-Paul-Trois-Châteaux, France | Bishop Emeritus of Fréjus, France |
| 14 Jun | 76.4 | Died | Benedicto Sánchez de Herrera † | Bishop of Pozzuoli, Italy |
| Born | Juan de Zuazo y Tejada, O.M. † | | Bishop-Elect of Orense, Spain |
| 19 Jun | | Born | Pietro Carlo Benedetti † | | Bishop of Spoleto, Italy |
| 22 Jun | | Born | Francesco Antonio Bussolini, O.S.B. † | | Bishop of Penne e Atri, Italy |
| 23 Jun | | Born | Luigi Maria de Dura, O.P. † | | Bishop of Castellaneta, Italy |
| 24 Jun | 66.4 | Ordained Bishop | Léon Bacoué, O.F.M. † | Bishop of Glandèves, France | Bishop Emeritus |
| Born | Armand-Gaston-Maximilien de Rohan de Soubise † | | Cardinal, Bishop of Strasbourg, France |
| 25 Jun | 35.4 | Appointed | Mario Emmanuelle Durazzo † | Bishop of Aleria, France | Bishop of Accia and Mariana, France |
| 64.3 | Appointed | Matteo Orlandi, O. Carm. † | Bishop of Cefalù, Italy |
| 26 Jun | 53.4 | Selected | Andrzej Olszowski † | Archbishop of Gniezno, Poland |
| 28 Jun | 68.4 | Died | Pierre de Bertier † | Bishop of Montauban, France |