| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 28.7 | Appointed | Stefano Evodio Assemani † | Titular Archbishop of Apamea in Bithynia |
| Born | Alexandre-Joseph-Alexis de Bruyère de Chalabre † | Castelnaudary | Bishop Emeritus of Saint-Omer, France |
| Appointed | Théodose V (Athanase) Dahan, B.C. † | Archbishop of Beirut {Bairut} (Melkite Greek), Lebanon | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria |
| Appointed | Tobie El-Khazen † | Bishop of Cipro (Maronite), Cyprus | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| Born | László Kollonitz † | Vienna, Austria | Archbishop of Kalocsa, Hungary |
| Born | Alexander MacDonald † | Bornish, South Uist | Vicar Apostolic of Highland District, Scotland, Great Britain |
| Born | Agapios III Matar † | Damas | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria |
| 22.8 | Ordained Priest | Antoni Kazimierz Ostrowski † | Priest | Archbishop of Gniezno, Poland |
| Born | Charles Colbert Seignelay de Castle Hill † | Castle Hill | Bishop Emeritus of Rodez, France |
| Jan | 62.2 | Died | Matteo Basile, O.F.M. † | Archbishop of Palermo, Italy |
| 62.0 | Died | Giovanni Battista Sanna † | Bishop of Ales e Terralba, Italy |
| 1 Jan | 76.5 | Died | Antonio San Felice † | Bishop of Nardò, Italy |
| 3 Jan | | Born | Giampaolo Dolfin, C.R.L. † | Sebenico | Bishop of Bergamo, Italy |
| 5 Jan | | Born | Corrado Maria Deodato de Moncada † | Noto | Bishop of Catania, Italy |
| Appointed | Marcello Moscella † | Prelate of Santa Lucia del Mela, Italy |
| 6 Jan | 66.9 | Died | Giovanni Romano † | Bishop of Catanzaro, Italy |
| 16.4 | Professed | Inácio de São Caetano, O.C.D. † | Member of Order of Discalced Carmelites | Bishop Emeritus of Penafiel, Portugal |
| 8 Jan | 62.3 | Died | Luigi Maria Strozzi † | Bishop of Fiesole, Italy |
| 12 Jan | | Born | Pedro Benito Antonio Quevedo y Quintano † | Villanueva del Fresno | Cardinal, Bishop of Orense, Spain |
| 16 Jan | | Ordained Bishop | Théodose V (Athanase) Dahan, B.C. † | Archbishop of Beirut {Bairut} (Melkite Greek), Lebanon | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria |
| 22 Jan | 37.3 | Ordained Bishop | Emmanuel-Henri-Timoléon de Cossé-Brissac † | Bishop of Condom, France |
| 44.4 | Ordained Bishop | François-Barthélemi de Salignac de La Mothe-Fénelon † | Bishop of Pamiers, France |
| 24 Jan | | Born | Mattia Santoro † | Bovino | Bishop of Polignano (Polinianum), Italy |
| 25 Jan | 62.2 | Died | Gaetano Zuanelli † | Bishop of Belluno, Italy |
| 29 Jan | 34.1 | Ordained Bishop | Jean-Gaspard-Gilbert de Chabannas † | Bishop of Agen, France |
| 3 Feb | | Born | Marie-Charles-Isidore de Mercy † | Maubec | Archbishop of Bourges, France |
| 4 Feb | | Born | José Andrés de Achurra y Núñez del Arco † | Panama | Bishop of Trujillo, Peru |
| 13 Feb | 52.4 | Appointed | Domenico Nicola Condulmer † | Bishop of Belluno, Italy |
| 19 Feb | | Born | Philippus Antonius Buffa, O.F.M. Conv. † | Sezze | Auxiliary Bishop of Ostia (-Velletri), Italy |
| 20 Feb | | Born | Benedetto Fenaja, C.M. † | Rome | Titular Patriarch of Constantinople |
| 25 Feb | 29.0 | Ordained Priest | Nicola Molinari, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Bovino, Italy |
| 23.3 | Ordained Priest | Stefano Moràbito † | Priest | Bishop Emeritus of Bova, Italy |
| 24.5 | Ordained Priest | Giovanni Filippo Antonio San Martino † | Priest | Bishop of Asti, Italy |
| 26 Feb | | Born | Mihajlo Mate Spalatin † | Arben | Bishop of Šibenik (Knin), Croatia |
| 27 Feb | 57.2 | Appointed | Claudio Domenico Albini † | Bishop of Lacedonia, Italy |
| 47.0 | Appointed | Cesare Bonajuti † | Bishop of Hvar (Lesina), Croatia |
| 37.8 | Confirmed | Jacques-Bonne Gigault de Bellefonds † | Bishop of Bayonne, France | Archbishop of Paris, France |
| 29.5 | Appointed | Francesco Maria Ginori † | Bishop of Fiesole, Italy |
| 37.5 | Appointed | Balthasar Maria Remondini † | Bishop of Cefalonia e Zante, Greece |
| 50.2 | Appointed | Bernardo Froilán Saavedra Sanjurjo † | Coadjutor Archbishop of Toledo, Spain |
| 50.2 | Appointed | Bernardo Froilán Saavedra Sanjurjo † | Titular Archbishop of Larissa in Thessalia | Coadjutor Archbishop of Toledo, Spain |
| 65.8 | Appointed | Gennaro Scalea † | Bishop of San Severo, Italy |
| 45.2 | Appointed | François de Serret de Gaujac † | Bishop of Aire, France |
| 47.5 | Appointed | Lorenzo Taranco Mujaurrieta † | Auxiliary Bishop of Santiago de Compostela, Spain | Bishop of Gerona, Spain |
| 47.5 | Appointed | Lorenzo Taranco Mujaurrieta † | Titular Bishop of Auzia | Bishop of Gerona, Spain |
| Mar | 25.8 | Ordained Priest | Marcantonio Lombardi † | Priest | Bishop of Crema, Italy |
| 3 Mar | 62.5 | Died | José Francisco Bermúdez Mandía † | Bishop of Astorga, Spain |
| 4 Mar | 29.5 | Ordained Bishop | Francesco Maria Ginori † | Bishop of Fiesole, Italy |
| 6 Mar | | Born | Antonio Martínez de la Plaza † | Granada | Bishop of Cádiz, Spain |
| 16 Mar | 38.7 | Installed | Francisco Pablo Matos Coronado † | Bishop of Yucatán (Mérida), México | Bishop of Michoacán, México |
| 19 Mar | 57.2 | Ordained Bishop | Claudio Domenico Albini † | Bishop of Lacedonia, Italy |
| 37.6 | Ordained Bishop | Balthasar Maria Remondini † | Bishop of Cefalonia e Zante, Greece |
| 22 Mar | 46.2 | Appointed | Joseph Schirò, O.S.B.M. † | Archbishop of Durrës (Durazzo) (Albanian), Albania |
| 25 Mar | 37.9 | Ordained Bishop | Jacques-Bonne Gigault de Bellefonds † | Bishop of Bayonne, France | Archbishop of Paris, France |
| 45.2 | Ordained Bishop | François de Serret de Gaujac † | Bishop of Aire, France |
| 31 Mar | 22.9 | Ordained Priest | Serafino Filangeri, O.S.B. † | Priest of Order of Saint Benedict | Archbishop of Napoli {Naples}, Italy |
| 24.1 | Ordained Priest | Francesco Pettorelli Lalatta † | Priest | Bishop of Parma, Italy |
| 32.1 | Ordained Priest | Joseph Wilhelm Rinck von Balderstein † | Priest of Basel, Switzerland | Bishop |
| 48.1 | Ordained Priest | Luca Melchiore Tempi † | Priest | Cardinal, Cardinal-Priest of Santa Croce in Gerusalemme |
| 40.9 | Ordained Priest | Ludovico Valenti † | Priest | Cardinal, Bishop of Rimini, Italy |
| 1 Apr | 51.8 | Appointed | Pedro de la Cuadra Achica † | Bishop of Osma, Spain | Archbishop of Burgos, Spain |
| 5 Apr | 50.8 | Installed | Juan Bravo del Rivero y Correa † | Bishop of Santiago de Chile | Bishop of Arequipa, Peru |
| 8 Apr | 88.1 | Ordained Bishop | Francisco Ignacio Añoa Busto † | Bishop of Pamplona, Spain | Archbishop of Zaragoza, Spain |
| Died | Tomás Broto Pérez † | Bishop of Solsona, Spain |
| 11 Apr | 50.8 | Appointed | Francesco Carafa † | Bishop of Nardò, Italy |
| 67.3 | Confirmed | Jean d’Yse (d’Ize) de Saléon † | Bishop of Rodez, France | Archbishop of Vienne, France |
| 52.1 | Appointed | Gregorio Galindo † | Bishop of Lérida, Spain |
| 60.5 | Appointed | Petrus Franciscus Hugon † | Auxiliary Bishop of Besançon, France |
| 60.5 | Appointed | Petrus Franciscus Hugon † | Titular Bishop of Philadelphia in Arabia | Auxiliary Bishop of Besançon, France |
| 28.4 | Appointed | Franjo Klobusiczky † | Titular Bishop of Nemesi | Archbishop of Kalocsa, Hungary |
| 56.3 | Appointed | Ottavio Ringhieri † | Bishop of Assisi, Italy |
| 48.0 | Appointed | Giovanni Rossi, C.R. † | Bishop of Ugento, Italy | Archbishop of Taranto, Italy |
| 48.2 | Appointed | Luca Melchiore Tempi † | Titular Archbishop of Nicomedia | Cardinal, Cardinal-Priest of Santa Croce in Gerusalemme |
| 12 Apr | 56.3 | Ordained Bishop | Ottavio Ringhieri † | Bishop of Assisi, Italy |
| 15 Apr | 50.8 | Ordained Bishop | Francesco Carafa † | Bishop of Nardò, Italy |
| 54.2 | Ordained Priest | Antoni Sebastian Dembowski † | Priest | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 46.3 | Ordained Bishop | Joseph Schirò, O.S.B.M. † | Archbishop of Durrës (Durazzo) (Albanian), Albania |
| 48.2 | Ordained Bishop | Luca Melchiore Tempi † | Titular Archbishop of Nicomedia | Cardinal, Cardinal-Priest of Santa Croce in Gerusalemme |
| 17 Apr | | Born | Nikola Bani (Ban) † | Ragusa | Archbishop of Dubrovnik (Ragusa), Croatia |
| 80.3 | Died | François de Nettancourt d’Haussonville de Vaubecourt † | Bishop Emeritus of Montauban, France |
| 69.5 | Died | Giusto Fontanini † | Titular Archbishop of Ancyra |
| 22 Apr | 48.0 | Ordained Bishop | Giovanni Rossi, C.R. † | Bishop of Ugento, Italy | Archbishop of Taranto, Italy |
| 24 Apr | 496.3 | Beatified | Bl. Niccolò Boccasini, O.P. † | Pope (Roma {Rome}, Italy) |
| 28 Apr | | Born | Bl. François-Joseph de La Rochefoucauld-Bayers † | Angoulême | Bishop of Beauvais, France |
| May | | Born | Raimondo Moncada, C.R. † | S. Pietro di Monforte | Bishop of Patti, Italy |
| 1 May | 45.3 | Installed | François de Serret de Gaujac † | Bishop of Aire, France |
| 4 May | | Born | Thomas Mariagni † | Tophanae | Archbishop of Durrës (Durazzo), Albania |
| 6 May | 57.3 | Ordained Bishop | Martín de Elizacoechea † | Bishop of Durango, México | Bishop of Michoacán, México |
| 10 May | 58.6 | Died | László Ádám Erdődy † | Bishop of Nitra, Slovakia |
| Born | Nikolaj Ferrich † | Ragusin | Bishop of Trebinje e Mrkan, Bosnia and Herzegovina |
| 12 May | | Born | Domingo Ramón Fernández Angulo † | Fonseca | Bishop of Tui, Spain |
| Born | Francisco Ignacio Iñigo Angulo † | Villasuso | Bishop of Osma, Spain |
| 13 May | 56.6 | Died | Francesco Baccari † | Bishop of Telese o Cerreto Sannita, Italy |
| 50.4 | Ordained Bishop | Bernardo Froilán Saavedra Sanjurjo † | Titular Archbishop of Larissa in Thessalia | Coadjutor Archbishop of Toledo, Spain |
| 17 May | | Born | Henri Henrard, O.F.M. Conv. † | Oleye | Apostolic Administrator Emeritus of Liège, Belgium |
| 20 May | | Born | Carlo Crivelli † | Milan, Italy | Cardinal, Official of the Roman Curia - Other |
| Born | Marie-Joseph de Galard de Terraube † | Lectoure | Bishop of Le Puy-en-Velay, France |
| Born | Vincenzo Maria Parruco Tries, O.P. † | Napoli | Bishop of Bovino, Italy |
| 26 May | 37.5 | Ordained Priest | Alberico Archinto † | Priest | Cardinal, Cardinal-Priest of San Lorenzo in Damaso |
| 24.1 | Ordained Priest | Francesco Antonio Deplano † | Priest | Bishop of Iglesias, Italy |
| 35.8 | Ordained Priest | Gerolamo Formagliari † | Priest | Bishop Emeritus of Todi, Italy |
| Born | Juan Francisco Jiménez del Río † | Oncala | Archbishop of Valencia, Spain |
| 23.0 | Ordained Priest | Domenico Monti † | Priest | Archbishop of Urbino, Italy |
| 23.0 | Ordained Priest | Andrea Torre † | Priest | Bishop of Minori, Italy |
| 28 May | 51.4 | Died | François d’Andigné † | Bishop of Acqs (Dax), France |
| Jun | | Died | Patrick O’Shea (Shee) † | Bishop of Ossory, Ireland |
| 1 Jun | 65.1 | Died | Bernardino Pecci † | Bishop of Grosseto, Italy |
| 4 Jun | | Born | Giuseppe Maria Terzi † | Cesena | Bishop of Montefeltro, Italy |
| 5 Jun | | Born | Corneille-François de Nélis † | Malines | Bishop of Antwerpen {Antwerp, Anvers}, Belgium |
| 10 Jun | 51.9 | Ordained Bishop | Pedro de la Cuadra Achica † | Bishop of Osma, Spain | Archbishop of Burgos, Spain |
| 14 Jun | | Born | Claude Leopoldo de Bexon † | Sarrable | Bishop Emeritus of Namur {Namen}, Belgium |
| 23 Jun | 47.7 | Ordained Bishop | Filippo Maria di San Agostino (Camillo Apollonio) Malachisi, O.C.D. † | Bishop of Ispahan, Iran |
| 26 Jun | 81.0 | Died | Honoré Quiqueran de Beaujeu † | Bishop of Castres, France |
| 29 Jun | | Born | Paolo Ciotti † | Civitate Castellan | Bishop of Segni, Italy |