| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Aeneas Chisholm † | Strathglass, Inverness | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 63.1 | Installed | Francisco Javier de Luna Victoria y Castro † | Bishop of Trujillo, Peru |
| 27.0 | Ordained Priest | Louis-François-Marc Hilaire de Conzié † | Priest | Bishop of Arras, France |
| 63.1 | Died | Michele Mascullo † | Bishop of Lucera, Italy |
| Born | Patrick MacMahon (McMahon) † | | Bishop of Killaloe, Ireland |
| 60.5 | Died | Józef Pawłowski † | Auxiliary Bishop of Poznań, Poland |
| 76.2 | Died | Andrzej Pruski † | Auxiliary Bishop of Przemyśl, Poland |
| 5 Jan | 79.1 | Died | Thomas Philip Wallrad d’Hénin-Létard d’Alsace-Boussut de Chimay † | Cardinal, Archbishop of Mechelen, Belgium |
| 7 Jan | 62.7 | Ordained Bishop | Ludwig Hatteisen, O.S.B. † | Titular Bishop of Anemurium | Auxiliary Bishop of Hildesheim, Germany |
| 60.0 | Died | Antoine-René de La Roche de Fontenille † | Bishop of Meaux, France |
| 9 Jan | 50.0 | Appointed | Thomas Burke (de Burgo), O.P. † | Bishop of Ossory, Ireland |
| Appointed | Philip O’Reilly † | Bishop of Raphoe, Ireland |
| 10 Jan | 50.5 | Died | Giuseppe Sersale † | Archbishop of Sorrento, Italy |
| 11 Jan | | Born | Manuel Julián Rodríguez del Barranco † | Almazán | Bishop of Comayagua, Honduras |
| 14 Jan | 35.6 | Ordained Bishop | Louis-Charles du Plessis d’Argentré † | Bishop of Limoges, France |
| 15 Jan | 84.3 | Died | Giovanni Antonio Guadagni, O.C.D. † | Cardinal, Bishop of Porto e Santa Rufina, Italy |
| 21 Jan | | Born | Alois Jozef Krakowski von Kolowrat † | Praha | Archbishop of Praha {Prague}, Czech Republic |
| 41.6 | Ordained Bishop | Giovanni Rondinelli † | Bishop of Comacchio, Italy |
| 62.8 | Died | Johann Rudolf von Sporck † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 22 Jan | 48.9 | Died | Joseph-François de Cadenet de Charleval † | Bishop of Agde, France |
| 23 Jan | | Born | André Molin † | Job | Bishop of Viviers, France |
| 24 Jan | | Born | Federico Bencivenni, O.F.M. Cap. † | San Giovanni in Persiceto | Bishop of Bertinoro, Italy |
| 27 Jan | 48.6 | Resigned | Serafino Brancone (Branconi), O.S.B. † | Bishop of Gallipoli, Italy | Bishop Emeritus |
| 31 Jan | 50.2 | Died | Giorgio Doria † | Cardinal, Cardinal-Priest of Sant’Agostino |
| 2 Feb | 24.0 | Ordained Priest | Ignacy Błażej Franciszek Krasicki † | Priest of Warmia (Ermland), Poland | Archbishop of Gniezno, Poland |
| 4 Feb | 42.5 | Ordained Bishop | Wilhelm von Alhaus, O.S.C. † | Titular Bishop of Arad | Auxiliary Bishop of Münster, Germany |
| 6 Feb | | Born | Alexis Saussol † | Dourgne | Bishop of Sées, France |
| 8 Feb | | Born | Aeneas Bernard MacEachern † | Kinlock-Moidart, Great Britain | Bishop of Charlottetown, Prince Edward Island, Canada |
| 9 Feb | 53.4 | Resigned | Giovanni Angelo Ciocchi del Monte † | Archbishop of Brindisi, Italy | Archbishop Emeritus |
| Born | Diego Antonio Navarro Martín de Villodras † | Moclín, Spain | Archbishop of La Plata o Charcas, Bolivia |
| 10 Feb | | Born | Antonio Ceruelo Sanz † | Corcos del Valle | Bishop of Menorca, Spain |
| 12 Feb | 39.0 | Appointed | Giovanni Francesco Albani † | Cardinal-Priest of San Clemente | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 47.1 | Confirmed | Andrzej Ignacy Bajer (Baier) † | Bishop of Chelmno (Culma, Kulm), Poland |
| 55.4 | Appointed | Johann Theodor von Bayern † | Cardinal-Priest of Santa Maria in Ara Coeli | Cardinal, Bishop of Regensburg, Germany |
| 61.7 | Appointed | Francesco Scipione Maria Borghese † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 48.6 | Appointed | Serafino Brancone (Branconi), O.S.B. † | Titular Archbishop of Thebae | Bishop Emeritus of Gallipoli, Italy |
| 47.4 | Appointed | Flavio Chigi (Jr.) † | Cardinal-Deacon of Santa Maria in Portico (Campitelli) | Cardinal, Prefect of the Congregation of Rites |
| 47.4 | Appointed | Flavio Chigi (Jr.) † | Cardinal, Prefect of the Congregation of Rites |
| 46.6 | Appointed | Nicolò Antonio Giustiniani, O.S.B. † | Bishop of Verona, Italy | Bishop of Padova {Padua}, Italy |
| 75.5 | Appointed | Carlo Alberto Guidobono Cavalchini † | Cardinal-Bishop of Albano | Cardinal, Datary of the Apostolic Datary |
| 73.8 | Appointed | Cosimo Imperiali † | Cardinal, Cardinal-Priest of Santa Cecilia |
| 79.3 | Appointed | Giacomo Oddi † | Cardinal-Priest of Santa Prassede | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 48.9 | Appointed | Marcello Capano Orsini † | Archbishop of Conza, Italy |
| 76.2 | Appointed | Domenico Silvio Passionei † | Cardinal-Priest of San Lorenzo in Lucina | Cardinal, Librarian of the Vatican Library |
| 43.3 | Selected | Kajetan Ignacy Sołtyk † | Bishop of Kraków, Poland |
| 33.9 | Appointed | Henry Benedict Mary Clement Stuart of York † | Cardinal-Priest of Santa Maria in Trastevere | Cardinal, Bishop of Frascati, Italy |
| 15 Feb | 40.1 | Selected | Martial-Louis de Beaupoil de Saint-Aulaire † | Bishop of Poitiers, France |
| 47.1 | Selected | Jean-Louis de La Marthonie de Caussade † | Bishop of Meaux, France |
| 18 Feb | 48.9 | Ordained Bishop | Marcello Capano Orsini † | Archbishop of Conza, Italy |
| 25 Feb | 43.9 | Died | Gabriel Palkovich, O.S.B.M. † | Titular Bishop of Druzipara |
| 28 Feb | 65.3 | Died | Joannes Calebotta † | Bishop of Šibenik (Knin), Croatia |
| Born | Pietro Caprano † | Rome, Italy | Cardinal, Prefect of the Congregation of the Index |
| 1 Mar | 77.6 | Died | Nicolò Carmine Falcone † | Archbishop of Santa Severina, Italy |
| 2 Mar | | Born | Antonio Maria Borghi † | Lauretan | Bishop of Narni, Italy |
| 59.8 | Died | Adam Ignacy Komorowski † | Archbishop of Gniezno, Poland |
| 3 Mar | 71.2 | Resigned | Louis-Guy de Guérapin de Vauréal † | Bishop of Rennes, France | Bishop Emeritus |
| 8 Mar | 31.9 | Selected | Charles-François-SIméon de Saint-Simon de Vermandois de Rouvroy de Sandricourt † | Bishop of Agde, France |
| 10 Mar | 23.1 | Ordained Priest | Benedetto Fenaja, C.M. † | Priest of Congregation of the Mission | Titular Patriarch of Constantinople |
| 23.1 | Ordained Priest | Mattia Santoro † | Priest | Bishop of Polignano (Polinianum), Italy |
| 68.5 | Died | Nicolas-Charles de Saulx-Tavannes † | Cardinal, Archbishop of Rouen, France |
| 23.0 | Ordained Priest | Mihajlo Mate Spalatin † | Priest | Bishop of Šibenik (Knin), Croatia |
| 32.7 | Appointed | James Robert Talbot † | Coadjutor Vicar Apostolic of London District, England, Great Britain | Vicar Apostolic |
| 32.7 | Appointed | James Robert Talbot † | Titular Bishop of Birtha | Vicar Apostolic of London District, England, Great Britain |
| 12 Mar | 47.2 | Resigned | Jean-Louis de La Marthonie de Caussade † | Bishop of Poitiers, France | Bishop of Meaux, France |
| Born | Luis Gregorio López Castillo † | Almagro | Auxiliary Bishop of Toledo, Spain |
| 56.2 | Died | Joannes Nieto Polo del Aguila † | Bishop of Quito, Ecuador |
| 13 Mar | 43.3 | Confirmed | Kajetan Ignacy Sołtyk † | Bishop of Kraków, Poland |
| 18 Mar | 23.5 | Ordained Priest | John Geddes † | Priest | Coadjutor Vicar Apostolic Emeritus of Lowland District, Scotland, Great Britain |
| 21 Mar | | Born | Giuseppe Stanislao Gentili † | Santa Sophia | Bishop of Colle di Val d’Elsa, Italy |
| 25 Mar | | Born | Andrea Portanova † | Napoli | Bishop of Lucera, Italy |
| 29 Mar | | Born | Antoine de La Grange de Pons † | Riome | Bishop of Moulins, France |
| Apr | 34.3 | Selected | Léopold-Charles de Choiseul-Stainville † | Archbishop of Albi, France | Archbishop of Cambrai, France |
| 1 Apr | 47.2 | Ordained Bishop | Andrzej Ignacy Bajer (Baier) † | Bishop of Chelmno (Culma, Kulm), Poland |
| 50.1 | Ordained Bishop | Joseph-Nicolas de Montenach † | Bishop of Lausanne, Switzerland |
| 61.9 | Died | Józef Eustachy Szembek † | Bishop of Płock, Poland |
| 2 Apr | | Born | Claude-Joseph-Judith-François-Xavier de Sagey † | Ornans | Bishop Emeritus of Tulle, France |
| 4 Apr | 52.3 | Appointed | Claude-Antoine-François-Jacquemet Gaultier d’Ancyse † | Bishop of Luçon, France |
| 39.3 | Appointed | Jacques de Grasse † | Bishop of Angers, France |
| 37.5 | Confirmed | Gabriel-François Moreau † | Bishop of Vence, France | Bishop of Autun, France |
| 48.7 | Appointed | Tommaso Ignazio Natta, O.P. † | Archbishop of Cagliari, Italy | Archbishop Emeritus |
| 55.0 | Appointed | Girolamo Palermo, C.R. † | Bishop of Mazara del Vallo, Italy | Bishop Emeritus |
| 35.0 | Appointed | Silvestro Pepe † | Archbishop of Sorrento, Italy |
| 35.4 | Appointed | Karol Salbeck † | Auxiliary Bishop of Vác, Hungary | Bishop of Spiš, Slovakia |
| 35.4 | Appointed | Karol Salbeck † | Titular Bishop of Nemesi | Bishop of Spiš, Slovakia |
| 58.9 | Appointed | Henri-Gabriel van Gameren † | Bishop of Antwerpen {Antwerp, Anvers}, Belgium |
| 32.0 | Appointed | Gabriel Wodzyński † | Coadjutor Bishop of Smoleńsk, Poland | Bishop |
| 32.0 | Appointed | Gabriel Wodzyński † | Titular Bishop of Theveste | Bishop of Smoleńsk, Poland |
| 8 Apr | 48.7 | Ordained Bishop | Tommaso Ignazio Natta, O.P. † | Archbishop of Cagliari, Italy | Archbishop Emeritus |
| 55.0 | Ordained Bishop | Girolamo Palermo, C.R. † | Bishop of Mazara del Vallo, Italy | Bishop Emeritus |
| 35.1 | Ordained Bishop | Silvestro Pepe † | Archbishop of Sorrento, Italy |
| 9 Apr | 40.3 | Confirmed | Martial-Louis de Beaupoil de Saint-Aulaire † | Bishop of Poitiers, France |
| Born | Carlos da Cunha e Menezes † | Lisbon | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 47.3 | Confirmed | Jean-Louis de La Marthonie de Caussade † | Bishop of Meaux, France |
| 55.4 | Appointed | Władysław Aleksander Łubieński † | Archbishop of Gniezno, Poland |
| 32.0 | Confirmed | Charles-François-SIméon de Saint-Simon de Vermandois de Rouvroy de Sandricourt † | Bishop of Agde, France |
| 54.3 | Confirmed | Jean-Antoine de Toucheboeuf de Beaumont des Junies † | Bishop of Rennes, France | Bishop Emeritus |
| 13 Apr | | Born | Anton Anhelovych (Angellowicz) † | Lviv | Archbishop of Lviv (Ukrainian), Ukraine |
| 14 Apr | 23.0 | Ordained Priest | Nikola Bani (Ban) † | Priest | Archbishop of Dubrovnik (Ragusa), Croatia |
| 22.9 | Ordained Priest | Nikolaj Ferrich † | Priest | Bishop of Trebinje e Mrkan, Bosnia and Herzegovina |
| 27.0 | Ordained Priest | Bernardinus Muti † | Priest | Titular Archbishop of Petra in Palaestina |
| 22.9 | Ordained Priest | Vincenzo Maria Parruco Tries, O.P. † | Priest of Order of Friars Preachers | Bishop of Bovino, Italy |
| 22.9 | Ordained Priest | Giuseppe Maria Terzi † | Priest | Bishop of Montefeltro, Italy |
| 16 Apr | 57.2 | Died | Louis-Albert Joly de Choin † | Bishop of Toulon, France |
| 22 Apr | 50.3 | Ordained Bishop | Thomas Burke (de Burgo), O.P. † | Bishop of Ossory, Ireland |
| 23 Apr | | Born | Dominique-Georges-Frédéric Dufour de Pradt † | Allanche, France | Archbishop Emeritus of Mechelen, Belgium |
| 25 Apr | 46.6 | Selected | Dominique de La Rochefoucauld † | Cardinal, Archbishop of Rouen, France |
| 51.2 | Selected | Louis-Albert de Lezay-Marnesia † | Bishop of Evreux, France | Bishop Emeritus |
| 29 Apr | 52.3 | Ordained Bishop | Claude-Antoine-François-Jacquemet Gaultier d’Ancyse † | Bishop of Luçon, France |
| 37.6 | Ordained Bishop | Gabriel-François Moreau † | Bishop of Vence, France | Bishop of Autun, France |
| 2 May | 53.9 | Ordained Bishop | José Antonio Basurco y Herrera † | Bishop of Buenos Aires, Argentina |
| 6 May | 32.1 | Ordained Bishop | Charles-François-SIméon de Saint-Simon de Vermandois de Rouvroy de Sandricourt † | Bishop of Agde, France |
| 7 May | 55.5 | Ordained Bishop | Władysław Aleksander Łubieński † | Archbishop of Gniezno, Poland |
| 13 May | 40.4 | Ordained Bishop | Martial-Louis de Beaupoil de Saint-Aulaire † | Bishop of Poitiers, France |
| 54.4 | Ordained Bishop | Jean-Antoine de Toucheboeuf de Beaumont des Junies † | Bishop of Rennes, France | Bishop Emeritus |
| 21 May | 70.2 | Died | Cesare Bonajuti † | Bishop of Hvar (Lesina), Croatia |
| Born | Bernardo del Espíritu Santo Martínez y Ocejo, O.C.D. † | Comillas, Santander, Spain | Bishop of Sonora, México |
| 23 May | | Born | Jean-Armand Chaudru de Trélissac † | Trélissac | Bishop Emeritus of Montauban, France |
| 27 May | 73.4 | Died | Franciszek Kanigowski † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 28 May | 34.5 | Confirmed | Léopold-Charles de Choiseul-Stainville † | Archbishop of Albi, France | Archbishop of Cambrai, France |
| 32.0 | Appointed | Marco Giuseppe Cornaro (Corner) † | Bishop of Torcello (Turris), Italy | Bishop of Vicenza, Italy |
| 36.5 | Appointed | Benoit-Antoine Doria † | Bishop of Ajaccio, France |
| 48.2 | Appointed | Giuseppe Maria Foschi † | Bishop of Lucera, Italy |
| 32.7 | Appointed | Joannes-Henricus von Frankenberg † | Archbishop of Mechelen, Belgium | Cardinal, Archbishop Emeritus |
| 42.9 | Appointed | Lourenço de Lencastre † | Bishop of Elvas, Portugal | Bishop of Leiria, Portugal |
| 39.8 | Appointed | Giovanni Pignatelli † | Archbishop of Santa Severina, Italy | Bishop Emeritus of Anglona-Tursi, Italy |
| 57.1 | Appointed | Domenico Rovegno † | Archbishop of Brindisi, Italy |
| Appointed | Bernardo de São Caetano, O.S.A. † | Bishop of São Tomé of Meliapore, India |
| 36.0 | Appointed | Francisco de Saldanha da Gama † | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 36.0 | Appointed | Francisco de Saldanha da Gama † | Cardinal-Priest | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 47.6 | Appointed | Ignazio Savastano † | Bishop of Gallipoli, Italy |
| 53.5 | Appointed | Isidoro Sanchez de Luna, O.S.B. † | Archbishop of Salerno, Italy | Archbishop Emeritus |
| 2 Jun | 46.7 | Confirmed | Dominique de La Rochefoucauld † | Cardinal, Archbishop of Rouen, France |
| 18.4 | Professed | Giulio Cesare Pallavicini † | Member of Society of Jesus | Bishop of Luni e Sarzana, Italy |
| 4 Jun | 36.5 | Ordained Bishop | Benoit-Antoine Doria † | Bishop of Ajaccio, France |
| 48.2 | Ordained Bishop | Giuseppe Maria Foschi † | Bishop of Lucera, Italy |
| 39.9 | Ordained Bishop | Giovanni Pignatelli † | Archbishop of Santa Severina, Italy | Bishop Emeritus of Anglona-Tursi, Italy |
| 57.1 | Ordained Bishop | Domenico Rovegno † | Archbishop of Brindisi, Italy |
| 47.6 | Ordained Bishop | Ignazio Savastano † | Bishop of Gallipoli, Italy |
| 5 Jun | | Born | Lorenzo D’Antoni † | Palermo, Italy | Titular Bishop of Germanicopolis |
| 9 Jun | 23.3 | Ordained Priest | Philippus Antonius Buffa, O.F.M. Conv. † | Priest of Order of Friars Minor Conventual | Auxiliary Bishop of Ostia (-Velletri), Italy |
| 24.4 | Ordained Priest | Vincenzo Maria Castro † | Priest | Bishop of Castellaneta, Italy |
| 27.6 | Ordained Priest | Antonius Romanus Malingri † | Priest | Archbishop of Oristano, Italy |
| 34.9 | Ordained Priest | Orazio Mattei † | Priest | Titular Archbishop of Colossae {Rhodes} |
| 24.1 | Ordained Priest | Giuseppe Ottavio Pochettini † | Priest | Bishop of Ivrea, Italy |
| 10 Jun | 32.1 | Ordained Bishop | Marco Giuseppe Cornaro (Corner) † | Bishop of Torcello (Turris), Italy | Bishop of Vicenza, Italy |
| 12 Jun | | Born | Jean-Baptiste de Bouillé † | Saint-Just-sous-Brioude | Bishop of Poitiers, France |
| 17 Jun | 18.4 | Professed | Filippo Ganucci † | Member of Society of Jesus | Bishop of Livorno, Italy |
| 24.0 | Ordained Priest | Antoni Narzymski † | Priest | Auxiliary Bishop of Płock, Poland |
| 20 Jun | | Born | Giovanni Collaro † | Tinos | Bishop of Tinos, Greece |
| 56.6 | Died | Moritz Adolf Karl von Sachsen-Zeitz (Saský) † | Bishop of Litoměřice, Czech Republic |
| 21 Jun | 62.1 | Died | Francesco Scipione Maria Borghese † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 24 Jun | 75.2 | Died | Giulio de Turris † | Bishop of Ruvo (Ruo)(di Puglia), Italy |