| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Died | Gaspare Borghi (Burgi) † | Bishop of Penne e Atri, Italy |
| Died | Rodrigo Cárdenas, O.P. † | Bishop of Nueva Segovia, Philippines |
| Born | Joseph-Pierre de Castellane † | Provence | Bishop of Fréjus, France |
| Died | Stanisław Czuryło † | Auxiliary Bishop of Lutsk (Łuck), Ukraine |
| Died | Edmund Dempsey, O.P. † | Bishop of Leighlin, Ireland |
| Appointed | Francisco de la Trinidad Arrieta, O.P. † | Bishop of Santa Marta, Colombia |
| 18.0 | Professed | Vincenzo Maria Durazzo, C.R. † | Member of Congregation of Clerics Regular | Bishop of Savona, Italy |
| 43.0 | Died | Louis de Fortia-Montréal † | Bishop of Carpentras, France |
| Appointed | Pedro Gálvez † | Bishop of Zamora, Spain |
| 24.2 | Ordained Priest | Anselmo Gómez de la Torre, O.S.B. † | Priest of Order of Saint Benedict | Bishop Emeritus of Tui, Spain |
| Born | Jean-Marie Henriau † | Paris | Bishop of Boulogne (-Sur-Mer), France |
| 30.8 | Ordained Priest | Juan de Isla † | Priest | Archbishop of Burgos, Spain |
| 15.1 | Professed | Jan Franciszek Kurdwanowski, S.J. † | Member of Society of Jesus | Auxiliary Bishop of Warmia (Ermland), Poland |
| 59.0 | Selected | Henri de La Mothe-Houdancourt † | Archbishop of Auch, France |
| Born | Louis Le Bel, O.F.M. † | | Titular Bishop of Bethleem |
| 55.0 | Died | Antonio Sarmiento de Luna y Enríquez † | Bishop of Sigüenza, Spain |
| 43.0 | Resigned | Carlo Mannello † | Bishop of Termoli, Italy | Bishop Emeritus |
| Resigned | Anthony MacGeoghegan, O.F.M. † | Bishop of Meath, Ireland | Bishop Emeritus |
| Died | Salvatore Mulas Pirella † | Bishop of Alghero, Italy |
| Born | Bernard-François de Poudenx de Castillon † | Poudenx | Bishop of Marseille, France |
| Appointed | Diego Riquelme y Quirós † | Bishop of Oviedo, Spain | Bishop Emeritus of Plasencia, Spain |
| Died | Benedetto Rocci, O. Carm. † | Bishop of Nusco, Italy |
| Born | Manuel a Santa Catharina, O. Carm. † | Lisbonne, Portugal | Bishop of Angola e Congo, Angola |
| Born | Pierre de Baglion de la Salle de Saillant † | Lyon | Bishop of Mende, France |
| Born | Emmanuel a Santo Antonio, O.P. † | Bengalen | Bishop of Malacca, Singapore |
| Died | Antonio de San Gregorio, O.F.M. † | Bishop-Elect of Nueva Caceres, Philippines |
| 24.0 | Ordained Bishop | Andrea Arcadio Stanila † | Bishop | Titular Bishop |
| Appointed | Anastasio Vives de Rocamora, O. Carm. † | Bishop of Segorbe, Spain | Bishop Emeritus |
| 49.0 | Ordained Bishop | Philipp Valentin Albrecht Voit von Rieneck † | Bishop of Bamberg, Germany |
| Appointed | Francisco de Zárate y Terán † | Bishop of Segovia, Spain | Bishop of Cuenca, Spain |
| Jan | | Born | Paulinus Sandulli, O.S.B. † | Napoli | Titular Bishop of Castoria |
| Born | Michele Gallo Vandeinde † | Napoli | Bishop Emeritus of Capri, Italy |
| 6 Jan | 44.0 | Ordained Priest | Giuseppe Spinucci † | Priest | Bishop of Penne e Atri, Italy |
| 9 Jan | | Born | Sigmund Carl von Castel-Barco † | Loppio | Bishop of Chiemsee, Germany |
| 14 Jan | | Born | Angelo Galzerin, O.F.M. Conv. † | Cagliari | Bishop of Ampurias e Civita, Italy |
| 24 Jan | | Appointed | Girolamo Codebò † | Bishop of Reggio Emilia, Italy |
| 65.1 | Died | Johann Flugi † | Bishop of Chur, Switzerland |
| 25 Jan | 25.3 | Ordained Priest | Godefroid-Udalric de la Margelle † | Priest of Roermond, Netherlands | Auxiliary Bishop of Köln {Cologne}, Germany |
| 26 Jan | | Died | Diego García de Trasmiera † | Bishop of Zamora, Spain |
| 30 Jan | 26.4 | Ordained Priest | Filippo Neri degli Altoviti † | Priest | Bishop of Fiesole, Italy |
| 59.6 | Died | Dietrich Adolf von der Reck † | Bishop of Paderborn, Germany |
| Feb | 61.1 | Resigned | Ignazio Cianti, O.P. † | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy | Bishop Emeritus |
| Born | Josephus de Fusco † | Graniani | Titular Bishop of Bethsaida |
| 51.1 | Ordained Bishop | Agustín Muñoz Sandoval † | Bishop of Cuzco, Peru |
| 2 Feb | 24.7 | Professed | Pier Matteo Petrucci, C.O. † | Member of Confederation of Oratorians of St. Philip Neri | Cardinal, Bishop Emeritus of Jesi, Italy |
| 3 Feb | | Born | Nicola Spinelli † | Capaccio | Bishop of Ugento, Italy |
| 8 Feb | 34.1 | Selected | Nicolas de Colbert † | Bishop of Luçon, France | Titular Archbishop of Cartagine |
| 10 Feb | | Died | Pierre Nivelle † | Bishop of Luçon, France |
| 11 Feb | | Died | Adam Kos † | Bishop of Chelmno (Culma, Kulm), Poland |
| 13 Feb | | Born | Cesare Francesco Lucini, O.P. † | Milano | Bishop of Gravina (di Puglia), Italy |
| 16 Feb | | Born | Giovanni Antonio Ruggeri † | Napoli | Bishop of Vieste, Italy |
| 21 Feb | 64.1 | Appointed | Jean-Jacques Fauche de Domprel † | Archbishop of Besançon, France |
| 49.1 | Appointed | Maciej Marian Kurski, O.F.M. † | Auxiliary Bishop of Poznań, Poland |
| 49.1 | Appointed | Maciej Marian Kurski, O.F.M. † | Titular Bishop of Aenus | Auxiliary Bishop of Poznań, Poland |
| 22 Feb | 31.5 | Selected | François de Nesmond † | Bishop of Bayeux, France |
| 23 Feb | 37.1 | Selected | Ulrich de Mont † | Bishop of Chur, Switzerland |
| 40.1 | Selected | Andrzej Olszowski † | Bishop of Chelmno (Culma, Kulm), Poland | Archbishop of Gniezno, Poland |
| 27 Feb | | Ordained Priest | Giovanni Antonio Melzi † | Priest | Archbishop of Capua, Italy |
| 28 Feb | 43.5 | Selected | Hyacinthe Serroni, O.P. † | Bishop of Mende, France | Archbishop of Albi, France |
| 8 Mar | | Born | Curzio Origo † | Rome, Italy | Cardinal, Cardinal-Priest of Sant’Eustachio |
| 9 Mar | 58.7 | Died | Jules Raymond (Giulio Raimondo) Mazarin (Mazzarino) † | Cardinal, Cardinal-Deacon |
| Died | Jerzy Karol Zawisza † | Bishop of Vilnius, Lithuania |
| 10 Mar | 50.2 | Selected | Gennaro De Andrea † | Bishop of Mottola (Motula), Italy |
| 11 Mar | 64.2 | Died | Gilles Boutault † | Bishop of Evreux, France |
| 14 Mar | 61.2 | Appointed | Vitaliano Marescano † | Bishop of Umbriatico (Umbriaticum), Italy |
| Appointed | Federico Martinotti (Martinozzi) † | Bishop of Sarsina, Italy |
| Appointed | Giovanni Antonio Melzi † | Archbishop of Capua, Italy |
| 24.8 | Ordained Priest | Pier Matteo Petrucci, C.O. † | Priest of Confederation of Oratorians of St. Philip Neri | Cardinal, Bishop Emeritus of Jesi, Italy |
| 20 Mar | 32.2 | Ordained Priest | Giovan Giorgio Mainardi † | Priest | Bishop of Ripatransone, Italy |
| 61.2 | Ordained Bishop | Vitaliano Marescano † | Bishop of Umbriatico (Umbriaticum), Italy |
| Ordained Bishop | Federico Martinotti (Martinozzi) † | Bishop of Sarsina, Italy |
| Ordained Bishop | Giovanni Antonio Melzi † | Archbishop of Capua, Italy |
| 23 Mar | | Born | Juan Bautista Pes Polo, O. Carm. † | San Pedro, Spain | Titular Bishop of Abila Lysaniae |
| 24 Mar | 56.1 | Ordained Bishop | Juan de Almoguera, O.SS.T. † | Bishop of Arequipa, Peru | Archbishop of Lima, Peru |
| 38.8 | Ordained Bishop | Antonio Sanz Lozano † | Bishop of Cartagena, Colombia | Archbishop of Santafé en Nueva Granada, Colombia |
| 25 Mar | 76.2 | Died | John O’Cullenan † | Bishop of Raphoe, Ireland |
| 27 Mar | 33.5 | Ordained Priest | Humbertus Guilielmus de Precipiano † | Priest | Archbishop of Mechelen, Belgium |
| 30 Mar | 45.1 | Appointed | Friedrich von Hessen-Darmstadt, O.S.Io.Hieros. † | Cardinal-Deacon of San Cesareo in Palatio | Cardinal, Bishop of Wrocław (Breslau), Poland |
| Apr | | Born | Giovanni Vincenzo Castelli, O.P. † | Scio | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 51.3 | Died | Agustín Muñoz Sandoval † | Bishop of Cuzco, Peru |
| 4 Apr | | Died | Juan Francisco Arnaldo Isasi † | Bishop of Puerto Rico (Porto Rico) |
| 13 Apr | 68.9 | Died | Bernardo Caballero Paredes † | Bishop of Oviedo, Spain |
| 15 Apr | | Born | Juan Montalbán Gómez, O.P. † | Hinojosas de Calatrava | Bishop of Plasencia, Spain |
| Born | Paolo Stabile, O.M. † | Castrovillari | Bishop of Bova, Italy |
| 16 Apr | | Born | François-Hyacinthe de Ploeuc de Timeur † | Landudec, Finistère | Bishop of Quimper, France |
| 20 Apr | 34.5 | Selected | Ferdinand von Fürstenberg † | Bishop of Paderborn, Germany |
| 23 Apr | | Born | Didaco Di Pace † | Naples | Bishop of Sarno, Italy |
| 24 Apr | 29.3 | Ordained Priest | Matteo Cosentino † | Priest | Bishop of Anglona-Tursi, Italy |
| 27 Apr | 49.3 | Ordained Bishop | Arnauld-François de Maytie † | Bishop of Oloron (Oloron-Sainte-Marie), France |
| 1 May | 64.3 | Ordained Bishop | Jean-Jacques Fauche de Domprel † | Archbishop of Besançon, France |
| 7 May | | Born | Francisco Dorda, O. Cist. † | Mataró | Bishop of Solsona, Spain |
| 11 May | | Ordained Bishop | Cipriano Medina, O.P. † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 15 May | 72.4 | Died | Jacques Raoul de La Guibourgère † | Bishop of La Rochelle, France |
| 19 May | | Born | Francesco Andrea Grassi † | Clodien | Bishop of Caorle, Italy |
| 24 May | 47.7 | Died | Simeone Difnico † | Bishop of Feltre, Italy |
| 30 May | 34.4 | Confirmed | Nicolas de Colbert † | Bishop of Luçon, France | Titular Archbishop of Cartagine |
| Appointed | Placide-Louis du Chemin, O.S.B. † | Coadjutor Bishop of Baghdad, Iraq | Bishop |
| Appointed | Placide-Louis du Chemin, O.S.B. † | Titular Bishop of Neocaesarea in Bithynia | Bishop of Baghdad, Iraq |
| 34.6 | Confirmed | Ferdinand von Fürstenberg † | Bishop of Paderborn, Germany |
| 6 Jun | 34.6 | Ordained Bishop | Ferdinand von Fürstenberg † | Bishop of Paderborn, Germany |
| 7 Jun | | Born | Álvaro de Abranches e Noronha † | Lisbon | Bishop of Leiria, Portugal |
| 11 Jun | 27.5 | Ordained Priest | Ernst von Trautson zu Falkenstein † | Priest of Salzburg, Austria | Bishop of Wien, Austria |
| 13 Jun | | Born | Manuel de Mimbela y Morlans, O.F.M. † | Fraga en Aragón, Spain | Bishop of Guadalajara, Jalisco, México |
| 26 Jun | 23.7 | Ordained Priest | Eustachy Stanisław Kotowicz † | Priest | Bishop of Smoleńsk, Poland |
| 29 Jun | | Ordained Bishop | Francisco de Zárate y Terán † | Bishop of Segovia, Spain | Bishop of Cuenca, Spain |