| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 52.7 | Died | Paul Baptiste Avanian, O.P. † | Archbishop of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 44.0 | Ordained Priest | György Bizánczy † | Priest | Vicar Apostolic of Mukachevo (Munkács) (Ruthenian), Ukraine |
| 12.8 | Professed | Thomaz Franciszek Czapski, O. Cist. † | Member of Order of Cistercians | Bishop of Chelmno (Culma, Kulm), Poland |
| Appointed | Giovanni degli Effetti † | Bishop of Molfetta, Italy |
| 27.0 | Ordained Priest | Jean-Armand de La Vove de Tourouvre † | Priest | Bishop of Rodez, France |
| 56.1 | Appointed | Petrus Govarts † | Vicar Apostolic of ’s Hertogenbosch (Bois-le-Duc), Netherlands |
| Born | Miguel Lino de Ezpeleta † | Manila | Bishop of Cebu, Philippines |
| Born | François-Marie Le Maistre de La Garlaye † | Nantes | Bishop of Clermont, France |
| Born | Giulio Cesare Lomellino, C.R. † | Genova | Bishop of Luni e Sarzana, Italy |
| Born | Manuel de Matos, O.F.M. † | Sevilla, Spain | Bishop of Nueva Caceres, Philippines |
| 67.9 | Resigned | Giacomo Antonio Morigia, B. † | Archpriest of the Basilica di Santa Maria Maggiore {Saint Mary Major Basilica} | Cardinal, Bishop of Pavia, Italy |
| Born | John O’Brien † | Kildorrery | Bishop of Ross, Ireland |
| Born | Lawrence Richardson, O.P. † | | Bishop of Kilmore, Ireland |
| 43.3 | Appointed | Matteo Gennaro Sibilia † | President of Pontifical Ecclesiastical Academy, Roman Curia | Bishop of San Marco (Argentano), Italy |
| 72.0 | Appointed | Giorgio Sotgia (Soggia), O.S.M. † | Archbishop of Sassari, Italy |
| Born | Romualdo Velarde Cienfuegos † | Proaza | Bishop of Avila, Spain |
| Born | Jean Antoine Voricla † | Scio | Bishop of Chios (Scio), Greece |
| 48.8 | Selected | Aleksander Benedykt Wyhowski † | Bishop of Lutsk (Łuck), Ukraine |
| Jan | | Born | Bonaventura Bernardi † | Spalaten | Bishop of Ossero (Osor), Croatia |
| Born | Stephanus di Leoni † | Catharen | Bishop of Novigrad (Cittanova), Croatia |
| Died | Carlo Loffredo, C.R. † | Archbishop of Capua, Italy |
| 2 Jan | 52.3 | Ordained Bishop | Louis Champion de Cicé † | Titular Bishop of Zabulon | Vicar Apostolic of Siam, Thailand |
| Born | Jan Dembowski † | Plock | Auxiliary Bishop Emeritus of Włocławek (Kujawy, Kalisze), Poland |
| 43.0 | Ordained Bishop | Angel de Maldonado, O. Cist. † | Bishop of Antequera, Oaxaca, México |
| 3 Jan | 37.2 | Appointed | Lorenzo Armengual del Pino de la Mota † | Auxiliary Bishop of Zaragoza, Spain | Bishop of Cádiz, Spain |
| 37.2 | Appointed | Lorenzo Armengual del Pino de la Mota † | Titular Bishop of Dionysias | Bishop of Cádiz, Spain |
| 48.6 | Appointed | Johann Philipp von Lamberg † | Cardinal-Priest of San Silvestro in Capite | Cardinal, Bishop of Passau, Germany |
| 49.0 | Appointed | Kazimierz Łubieński † | Auxiliary Bishop of Kraków, Poland | Bishop |
| 49.0 | Appointed | Kazimierz Łubieński † | Titular Bishop of Heraclea in Europa | Bishop of Kraków, Poland |
| 49.6 | Appointed | Louis-Antoine de Noailles † | Cardinal-Priest of Santa Maria sopra Minerva | Cardinal, Archbishop of Paris, France |
| 51.9 | Appointed | Pietro Francesco (Vincenzo Maria) Orsini de Gravina, O.P. † | Cardinal-Bishop of Frascati | Pope (Roma {Rome}, Italy) |
| 55.0 | Appointed | Juan Pérez Carpintero, O. Praem. † | Bishop of Comayagua, Honduras |
| 50.0 | Appointed | Vitus Seipel † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 50.0 | Appointed | Vitus Seipel † | Titular Bishop of Hierapolis in Isauria | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| Died | Petrus Paulus a San Francisco, O.C.D. † | Titular Archbishop of Ancyra |
| 10 Jan | 62.9 | Died | Johann Ignaz Dlouhovesky † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| Born | Enrichetto Virginio (Raffale Francesco) Natta, O.P. † | Casale Monferrato | Cardinal, Bishop of Alba (Pompea), Italy |
| 12 Jan | | Born | Pedro Martínez de Oneca † | Gallipienzo, Spain | Bishop of Puerto Rico (Porto Rico) |
| 13 Jan | 83.8 | Died | Gregorio Carducci † | Bishop of Valva, Italy |
| 17 Jan | 53.9 | Died | Dominicus Bellisarius de Bellis † | Bishop of Molfetta, Italy |
| 24 Jan | 30.5 | Appointed | Peter Cornelius Beyweg † | Titular Bishop of Methone | Auxiliary Bishop of Speyer, Germany |
| 30.5 | Confirmed | Peter Cornelius Beyweg † | Auxiliary Bishop of Speyer, Germany |
| 46.9 | Appointed | Francesco Frosini † | Bishop of Pistoia e Prato, Italy | Archbishop of Pisa, Italy |
| 37.6 | Appointed | Antonio Giustiniani † | Archbishop of Naxos, Greece |
| 67.9 | Appointed | Giacomo Antonio Morigia, B. † | Archbishop (Personal Title) of Pavia, Italy | Cardinal, Bishop |
| 61.1 | Resigned | Urbano Sacchetti † | Bishop of Viterbo e Tuscania, Italy | Cardinal, Bishop Emeritus |
| 45.2 | Appointed | Andrea Santacroce † | Archbishop (Personal Title) of Viterbo e Tuscania, Italy | Cardinal, Bishop |
| 34.3 | Appointed | Christian August von Sachsen-Zeitz † | Coadjutor Archbishop of Esztergom, Hungary | Cardinal, Archbishop |
| 61.1 | Appointed | Tommaso Antonio Scotti † | Archbishop of Dubrovnik (Ragusa), Croatia |
| 26 Jan | 71.7 | Died | Antonio Francesco Roberti † | Archbishop of Urbino, Italy |
| 27 Jan | | Born | Johann Nikolaus (Febronius) von Hontheim † | Trier | Auxiliary Bishop of Trier, Germany |
| Feb | | Born | Kazimierz Rokitnicki † | Osiek | Auxiliary Bishop of Płock, Poland |
| 1 Feb | 62.1 | Died | Simplicio Caravita, O.S.B. † | Archbishop of Amalfi, Italy |
| 5 Feb | | Born | Francesco Granata † | Capuan | Bishop of Sessa Aurunca, Italy |
| 6 Feb | | Ordained Bishop | Marco Gradenigo † | Titular Bishop of Titopolis | Patriarch of Venezia {Venice}, Italy |
| 7 Feb | | Born | Cristóvão de Almeida Soares † | Alemtem | Bishop of Pinhel, Portugal |
| 10 Feb | 56.6 | Died | Savo (Savio) Millini (Mellini) † | Cardinal, Bishop of Nepi e Sutri, Italy |
| 13 Feb | 46.9 | Ordained Bishop | Francesco Frosini † | Bishop of Pistoia e Prato, Italy | Archbishop of Pisa, Italy |
| 61.1 | Ordained Bishop | Tommaso Antonio Scotti † | Archbishop of Dubrovnik (Ragusa), Croatia |
| 15 Feb | 73.1 | Died | François de Clermont-Tonnerre † | Bishop of Noyon, France |
| 21 Feb | 68.0 | Appointed | Marcello Durazzo † | Cardinal-Priest of San Pietro in Vincoli | Cardinal, Bishop of Faenza, Italy |
| 43.6 | Appointed | Giulio Resta † | Bishop of Tortona, Italy |
| 26 Feb | 79.2 | Died | Carlo Felice de Matta † | Bishop of San Severo, Italy |
| 28 Feb | 26.7 | Selected | Armand-Gaston-Maximilien de Rohan de Soubise † | Coadjutor Bishop of Strasbourg, France | Cardinal, Bishop |
| 4 Mar | 68.2 | Died | Domingo de Orueta y Caceaga † | Bishop of Almería, Spain |
| 6 Mar | 37.3 | Ordained Bishop | Lorenzo Armengual del Pino de la Mota † | Titular Bishop of Dionysias | Bishop of Cádiz, Spain |
| 49.2 | Ordained Bishop | Kazimierz Łubieński † | Titular Bishop of Heraclea in Europa | Bishop of Kraków, Poland |
| 11 Mar | 30.0 | Appointed | Pier Secondo Radicati de Cocconato † | Bishop of Casale Monferrato, Italy | Bishop of Osimo e Cingoli, Italy |
| 12 Mar | 23.0 | Ordained Priest | Zdenko Georg Chrzepíczky von Modliskovic † | Priest of Praha {Prague}, Czech Republic | Auxiliary Bishop |
| Born | Francisco Javier Pérez Baroja y Muro † | Artol | Bishop of Teruel, Spain |
| 39.3 | Ordained Priest | Giovanni Matteo Vitelloni † | Priest | Bishop of Catanzaro, Italy |
| 14 Mar | 49.9 | Installed | Giuseppe Archinto † | Cardinal-Priest of Santa Prisca | Cardinal, Archbishop of Milano {Milan}, Italy |
| 53.5 | Appointed | Michele de Bologna, C.R. † | Archbishop of Amalfi, Italy |
| 37.6 | Appointed | Giuseppe Cianti † | Bishop of Nepi e Sutri, Italy |
| 47.2 | Appointed | Teodor Wolff von Ludinghausen † | Titular Bishop of Tripolis in Phoenicia | Bishop of Chełm, Poland |
| 47.2 | Confirmed | Teodor Wolff von Ludinghausen † | Coadjutor Bishop of Inflanty (Livonia)-Pilten, Poland | Bishop of Chełm, Poland |
| 42.7 | Appointed | Lamberto Manuel López † | Bishop of Teruel, Spain |
| 49.9 | Resigned | Fabrizio Paolucci † | Bishop of Ferrara, Italy | Cardinal, Secretary of the Secretariat of State |
| 39.6 | Appointed | Ottavio Picenardi (Piccinardi) † | Bishop of Reggio Emilia, Italy |
| 60.1 | Appointed | Taddeo Luigi dal Verme † | Cardinal, Bishop of Ferrara, Italy |
| 15 Mar | | Born | Antonio Alcalde y Barriga, O.P. † | Zigales, Spain | Bishop of Guadalajara, Jalisco, México |
| 17 Mar | | Converted | Athanasie Anghel Popa † | Titular Bishop |
| 24 Mar | | Ordained Priest | Athanasie Anghel Popa † | Priest | Titular Bishop |
| 25 Mar | | Ordained Bishop | Athanasie Anghel Popa † | Titular Bishop |
| 26 Mar | 42.8 | Selected | Claude-Maur d’Aubigné † | Bishop of Noyon, France | Archbishop of Rouen, France |
| 25.7 | Ordained Priest | Giovanni Minotto Ottoboni † | Priest | Bishop of Padova {Padua}, Italy |
| 30 Mar | | Born | Armand Bazin de Bezons † | Paris | Bishop of Carcassonne, France |
| 3 Apr | 30.7 | Ordained Bishop | Peter Cornelius Beyweg † | Titular Bishop of Methone | Auxiliary Bishop of Speyer, Germany |
| 17 Apr | 54.0 | Died | Martinus Steyaert † | Vicar Apostolic of ’s Hertogenbosch (Bois-le-Duc), Netherlands |
| 18 Apr | 57.3 | Appointed | Andrea Brancaccio, C.R. † | Archbishop of Cosenza, Italy |
| Appointed | Ignacio de Urbina † | Archbishop (Personal Title) of Tlaxcala, México | Bishop |
| 59.3 | Appointed | João Franco de Oliveira † | Archbishop (Personal Title) of Miranda (do Douro), Portugal | Bishop |
| 26.8 | Appointed | Armand-Gaston-Maximilien de Rohan de Soubise † | Titular Bishop of Tiberias | Cardinal, Bishop of Strasbourg, France |
| 26.8 | Confirmed | Armand-Gaston-Maximilien de Rohan de Soubise † | Coadjutor Bishop of Strasbourg, France | Cardinal, Bishop |
| 54.9 | Appointed | Giovanni Uva, O.F.M. † | Archbishop of Lanciano, Italy |
| 30.4 | Appointed | Vicko Zmajević † | Archbishop of Bar (Antivari), Montenegro | Archbishop of Zadar (Zara), Croatia |
| 2 May | | Born | Francisco José Catalán Ocón † | Torrox | Bishop of Urgell, Spain |
| 3 May | 70.3 | Died | Pedro de Alagó y de Cardona † | Bishop of Mallorca, Spain |
| 9 May | 61.1 | Appointed | Jerzy Albrecht Denhoff † | Bishop of Kraków, Poland |
| 39.0 | Appointed | Johann Raymund Guidobald von Lamberg, O.F.M. Cap. † | Auxiliary Bishop of Passau, Germany |
| 39.0 | Appointed | Johann Raymund Guidobald von Lamberg, O.F.M. Cap. † | Titular Bishop of Aulon | Auxiliary Bishop of Passau, Germany |
| 17 May | | Born | Manuel Machado y Luna † | Cáceres, Spain | Bishop of Caracas, Santiago de Venezuela |
| 20 May | 60.1 | Died | Adrian von Riedmatten (IV) † | Bishop of Sion {Sitten}, Switzerland |
| 22 May | 30.2 | Ordained Bishop | Pier Secondo Radicati de Cocconato † | Bishop of Casale Monferrato, Italy | Bishop of Osimo e Cingoli, Italy |
| 24 May | 57.3 | Resigned | Sigmund Christoph von Herberstein † | Bishop of Ljubljana, Slovenia | Bishop Emeritus |
| Born | Johann Philipp von Walderdorff † | Molsberg | Archbishop of Trier, Germany |
| 29 May | 23.4 | Ordained Priest | Giovanni Battista Rondoni † | Priest | Bishop of Assisi, Italy |
| Jun | | Born | Joseph-Nicolas Deschamps de Chaumont † | Chambery | Bishop of Genève {Geneva}, Switzerland |
| 30.5 | Ordained Priest | Edward Dicconson † | Priest | Vicar Apostolic of Northern District, England, Great Britain |
| 54.2 | Died | Vincenzo Cavalli (Gaballi) † | Bishop of Bertinoro, Italy |
| 2 Jun | 36.3 | Selected | Franz Joseph Supersaxo † | Bishop of Sion {Sitten}, Switzerland |
| 4 Jun | | Born | Girolamo Lorenzi (de Laurentiis) † | Napoli | Bishop of Acerno, Italy |
| 6 Jun | 43.0 | Confirmed | Claude-Maur d’Aubigné † | Bishop of Noyon, France | Archbishop of Rouen, France |
| 55.7 | Appointed | Ambrogio Spinola, B. † | Bishop of Ventimiglia, Italy | Bishop of Luni e Sarzana, Italy |
| 11 Jun | | Born | Carolus Ronchi † | Napoli | Bishop of Cariati e Cerenzia, Italy |
| 12 Jun | 55.8 | Ordained Bishop | Ambrogio Spinola, B. † | Bishop of Ventimiglia, Italy | Bishop of Luni e Sarzana, Italy |
| 20 Jun | 84.5 | Died | François de Batailler † | Titular Bishop of Bethleem |
| 26 Jun | 27.0 | Ordained Bishop | Armand-Gaston-Maximilien de Rohan de Soubise † | Titular Bishop of Tiberias | Cardinal, Bishop of Strasbourg, France |