| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Pedro d’ Alcala, O.P. † | | Vicar Apostolic of Chekiang {Ce-Kiam}, China |
| 15.0 | Entered | Gaspar Alphonsus Álvares, S.J. † | Member of Society of Jesus | Bishop of Săo Tomé of Meliapore, India |
| Born | Jean-Baptiste de Beaumanoir de Lavardin † | | Bishop of Rennes, France |
| Born | Armand-Louis Bonnin de Chalucet † | | Bishop of Toulon, France |
| Born | Jean-François Brizay de Denonville (Brezay) † | | Bishop of (Saint-Bertrand de) Comminges, France |
| Born | Joăo de Casal, O.S.A. † | | Bishop of Macau, China |
| 63.0 | Died | Cristóbal de Aresti Martínez de Aguilar, O.S.B. † | Bishop of Buenos Aires, Argentina |
| Born | Mateo Delgado † | | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| Born | John Dempsey † | | Bishop of Kildare and Leighlin, Ireland |
| 41.0 | Appointed | Georges Alexandre Dorpowski † | Auxiliary Bishop of Chelmno (Culma, Kulm), Poland |
| 41.0 | Appointed | Georges Alexandre Dorpowski † | Titular Bishop of Orthosias in Caria | Auxiliary Bishop of Chelmno (Culma, Kulm), Poland |
| Born | Juan Durán, O. de M. † | | Auxiliary Bishop of Cebu, Philippines |
| Born | Mihály Dvornikovich † | | Bishop of Vác, Hungary |
| Died | Felice Franceschini, O.F.M. Conv. † | Bishop of Andria, Italy |
| 86.9 | Died | Francesco Giustiniani † | Bishop Emeritus of Treviso, Italy |
| Born | Fernando Guzmán, O.F.M. † | | Bishop of Segovia, Spain |
| Born | Juan Ińiguez de Arnedo † | | Bishop of Pamplona, Spain |
| Died | Jean † | Bishop of Mardin (Chaldean), Turkey |
| Appointed | Joseph † | Bishop of Mardin (Chaldean), Turkey |
| Ordained Bishop | Joseph † | Bishop of Mardin (Chaldean), Turkey |
| Born | Pierre Lambert Ledrou, O.E.S.A. † | | Titular Bishop of Porphyreon |
| Born | Agostino Flavio Macedonich, O.F.M. † | | Bishop of Stagno (Ston), Croatia |
| Died | Roche MacGeoghegan, O.P. † | Bishop of Kildare, Ireland |
| Died | Gavino Magliano † | Archbishop of Oristano, Italy |
| Ordained Bishop | Gregoire Nagy Falvy † | Bishop of Vác, Hungary |
| Born | Ambrose O’Madden † | | Bishop of Clonfert, Ireland |
| 74.0 | Died | Ambrogio Palumbo, O.P. † | Bishop of Vieste, Italy |
| Born | Ottavio Paravicino † | | Bishop of Mileto, Italy |
| Born | Giovanni Battista Ponzi † | | Bishop of Umbriatico (Umbriaticum), Italy |
| Born | François-Charles de Salettes † | | Bishop of Oloron (Oloron-Sainte-Marie), France |
| Died | Rinaldo Scarlicchio † | Bishop of Ljubljana (Laybach; Laibach), Slovenia |
| Professed | Bernhard von Schrattenbach, O. Cist. † | Member of Order of Cistercians | Prefect of Lausitz (Lusatia), Germany |
| 64.0 | Died | Antonio Neto dos Santos, O.S.A. † | Auxiliary Bishop of Braga, Portugal |
| 40.0 | Succeeded | Pietro de Vico † | Bishop of Oristano, Italy | Archbishop of Cagliari, Italy |
| 1 Jan | | Succeeded | Esteban de Esmir † | Bishop of Huesca, Spain |
| 65.8 | Died | Giovanni Tommaso Eustachio, C.O. † | Bishop Emeritus of Larino, Italy |
| 76.0 | Died | Francisco Navarro de Eugui † | Bishop of Huesca, Spain |
| 7 Jan | 58.8 | Appointed | Pedro Tapia, O.P. † | Bishop of Segovia, Spain | Archbishop of Sevilla {Seville}, Spain |
| 14 Jan | | Died | Pietro Bellino † | Bishop of Saluzzo, Italy |
| 55.0 | Selected | Juan de Espinoza y Orozco, O.P. † | Bishop of Santa Marta, Colombia |
| 21 Jan | | Born | Franz Christoph Rinck von Balderstein † | | Auxiliary Bishop of Eichstätt, Germany |
| 24 Jan | 79.0 | Died | Felice Centini, O.F.M. Conv. † | Cardinal, Bishop of Macerata e Tolentino, Italy |
| 27 Jan | 59.0 | Ordained Bishop | Hugues de Labatut † | Bishop of (Saint-Bertrand de) Comminges, France |
| 30 Jan | 47.0 | Died | Zacharias Stumpf † | Auxiliary Bishop of Würzburg, Germany |
| 31 Jan | | Born | Nicolň Caranza † | | Bishop of Borgo San Donnino, Italy |
| Feb | 27.5 | Ordained Deacon | Alderano Cibo (Cybo) † | Deacon | Cardinal, Bishop Emeritus of Jesi, Italy |
| 27.5 | Ordained Priest | Alderano Cibo (Cybo) † | Priest | Cardinal, Bishop Emeritus of Jesi, Italy |
| 6 Feb | 55.4 | Died | Marco Zeno † | Bishop of Torcello (Turris), Italy |
| 11 Feb | | Born | Giuseppe Sallustio Fadulfi † | | Bishop of Ascoli Piceno, Italy |
| 16 Feb | | Born | Taddeo Luigi dal Verme † | | Cardinal, Bishop of Ferrara, Italy |
| 17 Feb | 48.1 | Ordained Bishop | Georgius Pauli-Stravius † | Titular Bishop of Ioppe | Auxiliary Bishop of Köln {Cologne}, Germany |
| 20 Feb | 50.1 | Appointed | Camillo Melzi † | Apostolic Nuncio to Florence (Tuscany), Italy | Cardinal, Archbishop of Capua, Italy |
| Resigned | Giovanni Francesco Passionei † | Apostolic Nuncio to Florence (Tuscany), Italy | Bishop of Pesaro, Italy |
| 21 Feb | | Born | José Guerrero de Torres, O.E.S.A. † | | Bishop of Gaeta, Italy |
| 22 Feb | | Died | Matteo Sanudo † | Bishop of Concordia (Sagittaria), Italy |
| 23 Feb | 26.1 | Ordained Priest | Cosme Roger, O. Cist. † | Priest of Order of Cistercians | Bishop of Lombez, France |
| 25 Feb | 74.2 | Appointed | Francesco Cennini de’ Salamandri † | Cardinal-Bishop of Sabina | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 41.1 | Appointed | Paul Fieschi † | Bishop of Toul, France |
| 45.5 | Appointed | Girolamo (Jérome) Grimaldi-Cavalleroni † | Titular Archbishop of Seleucia in Isauria | Cardinal, Archbishop of Aix, France |
| 73.1 | Resigned | Henri de Sponde † | Bishop of Pamiers, France | Bishop Emeritus |
| 47.1 | Succeeded | Jean de Sponde † | Bishop of Pamiers, France |
| 59.1 | Appointed | Juan Vélez de Valdivielso † | Bishop of Ávila, Spain | Bishop of Cartagena (en Espańa) |
| Mar | 74.1 | Died | Tegrimus Tegrimi † | Bishop of Assisi, Italy |
| 3 Mar | 45.5 | Ordained Bishop | Girolamo (Jérome) Grimaldi-Cavalleroni † | Titular Archbishop of Seleucia in Isauria | Cardinal, Archbishop of Aix, France |
| 9 Mar | 45.5 | Appointed | Girolamo (Jérome) Grimaldi-Cavalleroni † | Apostolic Nuncio to France | Cardinal, Archbishop of Aix, France |
| 43.6 | Resigned | Ranuccio (Ranuzio) Scotti Douglas † | Apostolic Nuncio to France | Bishop Emeritus of Borgo San Donnino, Italy |
| 10 Mar | 60.1 | Selected | Pedro Rosales Encio † | Bishop of Lugo, Spain |
| 14 Mar | | Died | Zachariasz Nowoszycki † | Auxiliary Bishop of Lviv, Ukraine |
| 18 Mar | 44.2 | Appointed | Paolo Pellegrini † | Bishop of Capri, Italy |
| 58.2 | Confirmed | Anastazy Antoni Seljava (Sielawa), O.S.B.M. † | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 24 Mar | 73.2 | Ordained Bishop | Domingo (de Villaescusa) Ramírez de Arellano, O.S.H. † | Bishop of Chiapas (Ciudad Real de Chiapas), México | Bishop of Yucatán (Mérida), México |
| 27 Mar | 57.2 | Died | Wilhelm von Welsberg † | Bishop of Brixen {Bressanone}, Italy |
| 29 Mar | | Born | Adrian von Riedmatten (V) † | | Bishop of Sion {Sitten}, Switzerland |
| 30 Mar | 50.3 | Died | Martino Alfieri † | Archbishop of Cosenza, Italy |
| 31.2 | Ordained Priest | Peter Walenburch † | Priest of Köln {Cologne}, Germany | Auxiliary Bishop |
| 2 Apr | 44.2 | Ordained Bishop | Paolo Pellegrini † | Bishop of Capri, Italy |
| 12 Apr | | Born | Louis-Alphonse de Valbelle † | | Bishop of Saint-Omer, France |
| 13 Apr | 51.2 | Died | Scipione Tancredi † | Bishop of Montalcino, Italy |
| 15 Apr | 36.2 | Appointed | Leonardo Bondumier † | Archbishop of Split (Spalato), Croatia | Archbishop Emeritus |
| 37.0 | Appointed | Otto Friedrich von Buchheim (Puchheim) † | Bishop of Ljubljana (Laybach; Laibach), Slovenia |
| 64.2 | Appointed | Aegidius Ursinus de Vivere † | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 19 Apr | 66.8 | Died | Juan Alonso de Solis y Mendoza, O. Carm. † | Bishop of Puerto Rico (Porto Rico) |
| 21 Apr | 36.3 | Ordained Bishop | Leonardo Bondumier † | Archbishop of Split (Spalato), Croatia | Archbishop Emeritus |
| 37.0 | Ordained Bishop | Otto Friedrich von Buchheim (Puchheim) † | Bishop of Ljubljana (Laybach; Laibach), Slovenia |
| 23 Apr | 64.3 | Ordained Priest | Aegidius Ursinus de Vivere † | Priest | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 28 Apr | | Ordained Bishop | Francesco de Faria † | Titular Bishop of Martyropolis | Auxiliary Bishop of Braga, Portugal |
| 64.3 | Ordained Bishop | Aegidius Ursinus de Vivere † | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 29 Apr | 71.3 | Died | Cristóbal de la Cámara y Murga † | Bishop of Salamanca, Spain |
| 30 Apr | | Died | Ettore Diotallevi † | Bishop of Fano, Italy |
| May | | Died | Angelo Castellari, O.M. † | Bishop of Caorle, Italy |
| 2 May | | Born | Francesco Jany † | | Bishop of Sirmio (Srijem; Sirmium), Croatia |
| 3 May | | Born | Vincenzo Lupi, O.F.M. † | | Bishop of Stagno (Ston), Croatia |
| 4 May | 46.1 | Resigned | Fausto Caffarelli † | Apostolic Nuncio to Savoy | Archbishop of Santa Severina, Italy |
| 54.3 | Appointed | Gasparo Cecchinelli † | Apostolic Nuncio to Savoy | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 12 May | | Born | Giuseppe Antonio Sillani Leoncilli † | | Bishop of Civita Castellana e Orte, Italy |
| 13 May | 53.0 | Appointed | Joseph de Bergaigne, O.F.M. Obs. † | Bishop of ’s-Hertogenbosch (Bois-le-Duc), Netherlands | Archbishop of Cambrai, France |
| 67.7 | Died | André Frémyot † | Archbishop Emeritus of Bourges, France |
| 52.3 | Died | Jan Lipski † | Archbishop of Gniezno, Poland |
| 15 May | | Born | Leonardo Marsili † | | Archbishop of Siena, Italy |
| 21 May | 81.3 | Died | Bertrand d’Eschaux (de Chaux) † | Archbishop of Tours, France |
| 44.3 | Succeeded | Victor Le Bouthilier † | Archbishop of Tours, France |
| 63.3 | Selected | Antonio Valdés Herrera † | Bishop of Osma, Spain | Bishop of Córdoba, Spain |
| 22 May | 51.6 | Installed | Pedro de Villagómez Vivanco † | Archbishop of Lima, Peru |
| 23 May | | Born | Jaroslav Frantiek Ignác von Sternberg (Šternberka) † | | Bishop of Litoměřice, Czechia |
| 1 Jun | 56.4 | Died | Carlo Emmanuele Pio di Savoia † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 61.4 | Selected | Hernando de Ramírez y Sánchez, O.SS.T. † | Bishop of Panamá |
| Died | Etienne de Vilazel (Virazel) † | Bishop of Saint-Brieuc, France |
| 2 Jun | | Ordained Bishop | Juan Bautista Verchi de Campania (Visco), O.F.M. † | Bishop of Tortosa, Spain | Bishop of Pozzuoli, Italy |
| 10 Jun | 41.4 | Selected | Denis de La Barde † | Bishop of Saint-Brieuc, France |
| 13 Jun | 76.4 | Selected | Johann Platzgummer † | Bishop of Brixen {Bressanone}, Italy |
| 15 Jun | 40.4 | Succeeded | Petăr Bogdan Bakšič, O.F.M. Obs. † | Bishop of Sardica (Sredek, Sofia), Bulgaria | Archbishop of Sardica (Sredek, Sofia), Bulgaria |
| Died | Elias Marini (Marinich), O.F.M. Obs. † | Bishop of Sardica (Sredek, Sofia), Bulgaria |
| 19 Jun | 29.4 | Selected | Diego de Guevara y Estrada † | Archbishop of Santo Domingo, Dominican Republic |
| 29 Jun | | Born | Pedro de Lepe Orantes (Lope y Dorantes) † | | Bishop of Calahorra y La Calzada, Spain |