| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 51.0 | Ordained Bishop | Fernando Ignacio Arango Queipo, O.S.A. † | Bishop of Tui, Spain |
| Born | Luis da Anunciação Azevedo, O.P. † | Lisbonne, Portugal | Bishop Emeritus of Angola e Congo, Angola |
| Selected | Antoine-François de Bliterswyck de Montcley † | Bishop of Autun, France | Archbishop of Besançon, France |
| Appointed | Antoine-Jérôme Boyvin de Vaurouy † | Bishop of Perpignan-Elne, France | Former Bishop-Elect |
| Born | Gaspard Brunet de Tressemanes † | Riez | Bishop Emeritus of Glandèves, France |
| Died | Orazio Capalbi † | Bishop of Bisignano, Italy |
| 23.8 | Ordained Priest | Pietro Paolo Carta † | Priest | Bishop of Ampurias e Civita, Italy |
| Born | Alexandre-César d’Anterroches † | Saint-Flour | Bishop of Condom, France |
| Born | Claude-Marc-Antoine d’Apchon de Corgenon † | Montbrison | Archbishop of Auch, France |
| Born | Alexandre Lascaris de Vintimille † | Marseille | Bishop of Toulon, France |
| Born | Joannes Bapt. Miroudot, O. Cist. † | Bisuntin | Bishop of Baghdad, Iraq |
| 55.0 | Died | Georgius Martonffi † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| Born | Pierre Peineau du Verdier, C.O. † | Tonneins | Bishop of Accia and Mariana, France |
| 60.3 | Appointed | Agostino Pipia, O.P. † | Master General of Order of Friars Preachers | Cardinal, Bishop Emeritus of Osimo e Cingoli, Italy |
| 81.0 | Resigned | Guy de Sève de Rochechouart † | Bishop of Arras, France | Bishop Emeritus |
| 60.4 | Died | Ludwik Bartlomiej Załuski † | Bishop of Płock, Poland |
| 5 Jan | 62.0 | Died | Jean-Hervé Bazan de Flamanville † | Bishop of Perpignan-Elne, France |
| 8 Jan | | Selected | Dominique-Laurent de Balbe de Berton de Crillon † | Bishop of Glandèves, France |
| 33.0 | Appointed | Charles de Bannes d’Avéjan † | Bishop of Alès (Alais), France |
| 66.0 | Died | Jean-Baptiste-Armand Bazin de Besons † | Archbishop of Rouen, France |
| 45.0 | Selected | Godefroid-Maurice de Conflans † | Bishop of Le Puy-en-Velay, France |
| 36.0 | Selected | Michel Pierre d’Argouges † | Bishop of Périgueux (Vesuna), France |
| 36.0 | Selected | Jérôme-Louis de Foudras de Courcenay † | Coadjutor Bishop of Poitiers, France | Bishop |
| 38.0 | Selected | Léonor III de Goyon de Matignon † | Bishop of Coutances, France |
| Appointed | Pierre-Guillaume de La Vieuxville-Pourpris † | Bishop of Saint-Brieuc, France |
| 37.0 | Selected | François-Honoré-Lancelot de Maniban de Casaubon † | Bishop of Mirepoix, France | Bishop of Bordeaux, France |
| Died | Charles Andrault de Maulevrier de Langeron † | Bishop Emeritus of Autun, France |
| 9 Jan | 56.6 | Selected | François Blouet de Camilly † | Archbishop of Tours, France |
| 47.9 | Selected | Wenzel Franz Karl Koschinsky von Koschín † | Bishop of Hradec Králové, Czech Republic |
| 43.6 | Selected | Johann Adam von Wratislaw von Mitrowitz † | Bishop of Litoměřice, Czech Republic |
| 10 Jan | 40.0 | Selected | Scipion-Jérôme Bégon † | Bishop of Toul, France |
| 11 Jan | 53.0 | Selected | Paul-Robert Hertault de Beaufort † | Bishop of Lectoure, France |
| 49.2 | Selected | Henri-Osvald de La Tour d’Auvergne de Bouillon † | Archbishop of Vienne, France | Cardinal, Archbishop Emeritus |
| 30.3 | Selected | Nicolas-Charles de Saulx-Tavannes † | Bishop of Chalons-sur-Marne, France | Cardinal, Archbishop of Rouen, France |
| 13 Jan | | Born | Benedetto Mattei † | Avezza | Bishop of Marsi, Italy |
| 14 Jan | 65.5 | Died | Fulvio Astalli † | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 19 Jan | 53.3 | Ordained Bishop | Girolamo Crispi † | Archbishop of Ravenna, Italy | Archbishop of Ferrara, Italy |
| Born | Giovanni Giacomo Onorati † | Terra della Rocchetta | Bishop of Troia, Italy |
| 20 Jan | 63.9 | Appointed | Juan Álvaro Cienfuegos Villazón, S.J. † | Archbishop (Personal Title) of Catania, Italy | Cardinal, Archbishop Emeritus of Monreale, Italy |
| Born | Gabriel Álvarez de Faria y Sánchez Zarzosa † | Badajoz | Bishop of Badajoz, Spain |
| 69.4 | Appointed | Manuel Álvares da Costa † | Bishop of Angra, Portugal |
| 50.8 | Appointed | Pantaleon Bruns, O.S.B. † | Auxiliary Bishop of Paderborn, Germany |
| 50.8 | Appointed | Pantaleon Bruns, O.S.B. † | Titular Bishop of Thyatira | Auxiliary Bishop of Paderborn, Germany |
| 50.2 | Appointed | Antonio Carrara † | Bishop of Fondi (Fundi), Italy |
| 44.6 | Appointed | Francesco Maria Loyero † | Bishop of Umbriatico (Umbriaticum), Italy | Bishop of Nicastro, Italy |
| 45.1 | Appointed | Antonius Pimentel, S.J. † | Archbishop of Cranganore (Angamala), India |
| 36.6 | Appointed | Lazzaro Pallavicini † | Titular Archbishop of Thebae |
| 51.7 | Appointed | Teodoro Pongelli (Pungelli) † | Bishop of Terni, Italy | Bishop Emeritus |
| Born | Francesco Maria Sorgo Bobali, O.F.M. † | Ragusin | Bishop of Stagno (Ston), Croatia |
| 53.6 | Installed | Giorgio Spínola † | Cardinal-Priest of Sant’Agnese fuori le mura | Cardinal, Cardinal-Bishop of Palestrina |
| 25 Jan | 45.1 | Resigned | Sebastião de Andrade Peçanha † | Archbishop of Goa, India | Archbishop Emeritus |
| 91.0 | Died | Pierre-Daniel Huet † | Bishop Emeritus of Avranches, France |
| 30 Jan | | Born | Francesco Ignazio Guiso † | Cagliari | Bishop of Ampurias e Civita, Italy |
| Feb | | Born | João Teixeira de Carvalho † | Lisbon | Bishop of Elvas, Portugal |
| 2 Feb | 48.9 | Ordained Bishop | Andrés de Orbe y Larreátegui † | Bishop of Barcelona, Spain | Archbishop Emeritus of Valencia, Spain |
| 3 Feb | 57.3 | Appointed | Tommaso Cervini † | Titular Archbishop of Nicomedia | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 47.1 | Appointed | Jan-Baptist de Smet † | Bishop of Ypres (Ieper), Belgium | Bishop of Gent {Ghent, Gand}, Belgium |
| 67.4 | Appointed | Prospero Marefoschi † | Titular Archbishop of Caesarea in Cappadocia | Cardinal, Cardinal-Priest of San Silvestro in Capite |
| 58.1 | Appointed | Bartolomeo Massei † | Titular Archbishop of Athenae | Cardinal, Bishop of Ancona e Numana, Italy |
| Appointed | Inácio de Santa Teresa, O.S.A. † | Archbishop of Goa, India | Bishop of Faro {Algarve}, Portugal |
| Born | Jan Maurycy von Strachwitz † | Freyhan | Apostolic Administrator of Wrocław (Breslau), Poland |
| 61.1 | Appointed | Gregorio Téllez, O.F.M. Conv. † | Bishop of Ciudad Rodrigo, Spain | Bishop Emeritus |
| 45.9 | Appointed | Felipe de los Tueros Huerta † | Bishop of Guadix, Spain | Archbishop of Granada, Spain |
| 6 Feb | 70.1 | Died | Felipe Ignacio Trujillo y Guerrero † | Bishop of Michoacán, México |
| 7 Feb | 77.8 | Died | Alexander Bonaventura † | Titular Bishop of Nazianzus |
| 11 Feb | 46.1 | Selected | Charles-François d’Hallencourt de Dromesnil † | Bishop of Verdun, France |
| Resigned | António Paes Godinho, S.J. † | Bishop of Nanking [Nanjing], China | Bishop Emeritus |
| 12 Feb | 50.3 | Appointed | José a Santa Maria de Jesus Azevedo Leal, O.F.M. † | Bishop of Santiago de Cabo Verde |
| 66.1 | Appointed | Valentinus Constantinus Czulski † | Auxiliary Bishop of Chełm, Poland |
| 66.1 | Appointed | Valentinus Constantinus Czulski † | Titular Bishop of Claudiopolis in Honoriade | Auxiliary Bishop of Chełm, Poland |
| Appointed | Emmanuel de Jesus-Maria-Joseph, O.F.M. † | Bishop of Nanking [Nanjing], China |
| Appointed | Michael Piechowski † | Auxiliary Bishop of Przemyśl, Poland |
| Appointed | Michael Piechowski † | Titular Bishop of Gratianopolis | Auxiliary Bishop of Przemyśl, Poland |
| Appointed | Francisco de Vasconcellos, S.J. † | Bishop of Cochin, India |
| 14 Feb | | Born | Donato de’ Liguori † | Napoli | Bishop of Venafro, Italy |
| 18 Feb | | Born | Joannes Maria Antonius dall’Ostia † | Iadren | Bishop of Arbe (Rab), Croatia |
| 19 Feb | 48.2 | Died | Joseph Anton von Delmestri von Schönberg † | Bishop of Trieste, Italy |
| 24 Feb | | Born | Jean-Armand de Bessuéjouls Roquelaure † | Lassouts, France | Archbishop Emeritus of Mechelen, Belgium |
| 44.4 | Ordained Bishop | Damian Hugo Philipp von Schönborn Bushein † | Cardinal, Bishop of Speyer, Germany |
| 25 Feb | | Born | Panfilo Antonio Mazzara † | Sulmona | Bishop of Teramo, Italy |
| 52.8 | Died | Alessandro Felice Mercanti, O.P. † | Archbishop of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 27 Feb | 67.2 | Died | Miguel del Olmo Manrique † | Bishop of Cuenca, Spain |
| Mar | 58.8 | Died | Pompilio Berlingieri † | Bishop Emeritus of Bisignano, Italy |
| 1 Mar | | Born | Angel Molinos, O.P. † | Tórtoles de Esgueva | Bishop of Zamora, Spain |
| 2 Mar | 45.0 | Ordained Priest | Vincenzo Santini † | Priest | Titular Archbishop of Trapezus |
| 3 Mar | 58.3 | Appointed | Francesco Barberini (Jr.) † | Bishop of Palestrina, Italy | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 58.3 | Appointed | Francesco Barberini (Jr.) † | Cardinal-Bishop of Palestrina | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 73.2 | Appointed | Francesco del Giudice † | Cardinal-Bishop of Frascati | Cardinal, Archbishop Emeritus of Monreale, Italy |
| 79.0 | Appointed | Giuseppe Sacripante † | Cardinal-Priest of Santa Prassede | Cardinal, Cardinal-Priest of San Lorenzo in Lucina |
| Appointed | Bernardo Serrada, O. Carm. † | Bishop of Panamá | Bishop of Cuzco, Peru |
| 70.9 | Appointed | Sebastiano Antonio Tanara † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 7 Mar | 74.2 | Died | Francisco de São Jerõnimo de Andrade, C.S.J. † | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 8 Mar | 23.5 | Ordained Priest | Honuphrius Belsito † | Priest | Bishop Emeritus of Lavello, Italy |
| 23.5 | Ordained Priest | Gaetano Fraccagnani † | Priest | Bishop of Città della Pieve, Italy |
| 16 Mar | 58.3 | Ordained Bishop | Francesco Barberini (Jr.) † | Bishop of Palestrina, Italy | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| Born | Damian August Philipp Karl von Limburg-Styrum † | Gemen | Bishop of Speyer, Germany |
| 17 Mar | 35.2 | Ordained Bishop | Alexandre de Jouanne de Saumery † | Bishop of Rieux, France |
| 19 Mar | 71.7 | Died | Giovanni Francesco Albani † | Pope (Roma {Rome}, Italy) |
| 70.0 | Resigned | Fabrizio Paolucci † | Cardinal, Secretary of the Secretariat of State |
| 21 Mar | 34.7 | Ordained Priest | Luigi Gherardi † | Priest | Bishop of Cortona, Italy |
| 22 Mar | 69.2 | Died | Joannes Vidovich † | Bishop of Trogir (Traù), Croatia |
| 23 Mar | 51.0 | Ordained Bishop | Pantaleon Bruns, O.S.B. † | Titular Bishop of Thyatira | Auxiliary Bishop of Paderborn, Germany |
| 58.2 | Ordained Bishop | Bartolomeo Massei † | Titular Archbishop of Athenae | Cardinal, Bishop of Ancona e Numana, Italy |
| 24 Mar | 75.2 | Died | Miguel Juan de Taverner y Rubí † | Archbishop of Tarragona, Spain |
| 29 Mar | 30.4 | Ordained Priest | Antonio Fonseca † | Priest | Bishop of Jesi, Italy |
| Born | Segherio Felice Seghieri † | Montecarlo Pescia | Bishop of Sovana (Soana), Italy |
| 24.4 | Ordained Priest | Louis-Marie de Suarès d’Aulan † | Priest | Bishop Emeritus of Acqs (Dax), France |
| 30 Mar | | Ordained Bishop | Emmanuel de Jesus-Maria-Joseph, O.F.M. † | Bishop of Nanking [Nanjing], China |
| Apr | | Born | Wojciech Józef Radoszewski † | Michalow | Auxiliary Bishop of Kraków, Poland |
| 15 Apr | | Born | Muzio Gallo † | Osimo | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 27 Apr | 61.3 | Ordained Bishop | Gregorio Téllez, O.F.M. Conv. † | Bishop of Ciudad Rodrigo, Spain | Bishop Emeritus |
| 1 May | 33.7 | Ordained Priest | Rizzardo Isolani † | Priest | Bishop of Senigallia, Italy |
| 42.3 | Ordained Bishop | Ramón Marimón Corbera † | Bishop of Vic, Spain |
| 51.0 | Ordained Bishop | José Taberner (Taverner) Dárdena † | Bishop of Gerona, Spain |
| 2 May | | Born | Pierre-Louis de Leyssin † | Aoste | Archbishop of Embrun, France |
| 3 May | 24.1 | Ordained Priest | Giuseppe Agostino Delbecchi, Sch. P. † | Priest of Order of the Pious Schools | Archbishop of Cagliari, Italy |
| 4 May | 55.8 | Ordained Bishop | François-Gabriel Guisain, M.E.P. † | Titular Bishop of Laranda | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 59.9 | Died | Manuel de Mimbela y Morlans, O.F.M. † | Bishop of Guadalajara, Jalisco, México |
| 46.1 | Ordained Bishop | Felipe de los Tueros Huerta † | Bishop of Guadix, Spain | Archbishop of Granada, Spain |
| 6 May | 80.3 | Died | Petrus Lambertus Ledrou, O.S.A. † | Titular Bishop of Porphyreon |
| 8 May | 66.0 | Elected | Michelangelo dei Conti † | Pope (Roma {Rome}, Italy) |
| 9 May | 74.8 | Died | Giandomenico Paracciani † | Cardinal, Bishop Emeritus of Senigallia, Italy |
| 10 May | 53.9 | Appointed | Giorgio Spínola † | Secretary of the Secretariat of State | Cardinal, Cardinal-Bishop of Palestrina |
| 11 May | 70.1 | Appointed | Fabrizio Paolucci † | Vicar General of Roma {Rome}, Italy | Cardinal, Secretary of the Secretariat of State |
| 12 May | 82.3 | Died | Giuseppe Crispino † | Bishop of Amelia, Italy |
| 18 May | 66.0 | Installed | Michelangelo dei Conti † | Pope (Roma {Rome}, Italy) |
| 19 May | | Died | René Mornay de Montchevreuil † | Archbishop of Besançon, France |
| 21 May | 46.4 | Died | Joachim Henryk Przebendowski † | Bishop of Lutsk (Łuck), Ukraine |
| 28 May | 56.5 | Appointed | Réné-François Beauvau de Rivau † | Archbishop of Narbonne, France |
| 50.4 | Appointed | Andreas Berkes † | Titular Archbishop of Heraclea in Europa |
| 59.1 | Appointed | Francisco Laso de la Vega Córdova, O.P. † | Bishop of Plasencia, Spain |
| 58.4 | Appointed | François Louis Sanguessa, O.F.M. † | Titular Bishop of Utica | Bishop of Roermond, Netherlands |
| 58.4 | Confirmed | François Louis Sanguessa, O.F.M. † | Coadjutor Bishop of Roermond, Netherlands | Bishop |
| 45.2 | Appointed | Vincenzo Santini † | Titular Archbishop of Trapezus |
| 29 May | | Born | Filippo Amadei † | Roma | Bishop of Perugia, Italy |
| Jun | 78.6 | Died | Giuseppe Mastellone † | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| 3 Jun | 81.4 | Died | Joaquín Canaves, O.S.Io.Hieros. † | Bishop of Malta |
| 8 Jun | 50.6 | Ordained Bishop | José a Santa Maria de Jesus Azevedo Leal, O.F.M. † | Bishop of Santiago de Cabo Verde |
| 9 Jun | 79.4 | Died | Martin Bernhard Just von Friedenfeld † | Prefect of Meißen (Meissen) {Lusazia o Lausitz; Sassonia}, Germany |
| 11 Jun | | Born | Anton Zlatarić † | Dubica | Bishop of Beograd (-Smederevo), Serbia |
| 12 Jun | 61.4 | Died | Alfonso De’ Belincioni † | Bishop of Cagli, Italy |
| 13 Jun | 70.9 | Resigned | Paul de Chaulnes † | Bishop of Sarlat, France | Bishop of Grenoble, France |
| Born | Antonio Andrés López Arroyo, O.F.M. † | Casarrubios del Monte | Bishop of Astorga, Spain |
| 41.9 | Ordained Priest | Domingo (Damiano) Polou † | Priest | Archbishop of Reggio Calabria, Italy |
| 15 Jun | 39.5 | Appointed | Ioan Constantin Giurgiu Patachi (Nemes de Pataky), O.S.B.M. † | Bishop of Făgăraş (Romanian), Romania |
| 16 Jun | 58.5 | Installed | Luis Antonio Belluga y Moncada, C.O. † | Cardinal-Priest of Santa Maria in Traspontina | Cardinal, Bishop Emeritus of Cartagena (en España) |
| 71.0 | Appointed | Paul de Chaulnes † | Bishop of Grenoble, France |
| 33.5 | Appointed | Louis-Armand Chomel † | Bishop of Orange, France | Bishop Emeritus |
| 45.5 | Confirmed | Godefroid-Maurice de Conflans † | Bishop of Le Puy-en-Velay, France |
| 57.3 | Elevated to Cardinal | Bernardo Maria Conti, O.S.B. † | Cardinal, Bishop Emeritus of Terracina, Priverno e Sezze, Italy |
| 48.6 | Installed | Imre Csáky † | Cardinal-Priest of Sant’Eusebio | Cardinal, Archbishop of Kalocsa, Hungary |
| 59.5 | Appointed | Augustinus Nicola degl’Abbati Olivieri, O.S.A. † | Titular Bishop of Porphyreon |
| 41.6 | Installed | Thomas Philip Wallrad d’Hénin-Létard d’Alsace-Boussut de Chimay † | Cardinal-Priest of San Cesareo in Palatio | Cardinal, Archbishop of Mechelen, Belgium |
| 36.5 | Confirmed | Michel Pierre d’Argouges † | Bishop of Périgueux (Vesuna), France |
| 56.5 | Appointed | Nuno da Cunha e Ataíde † | Cardinal, Cardinal-Priest of Sant’Anastasia |
| Appointed | Juan Lancaster (or Alencaster) Norona † | Bishop of Cuenca, Spain |
| 41.5 | Appointed | Charles-Guillaume de Maupeou † | Bishop of Lombez, France |
| 59.0 | Installed | José Pereira de Lacerda † | Cardinal-Priest of Santa Susanna | Cardinal, Bishop of Faro {Algarve}, Portugal |
| 47.0 | Installed | Armand-Gaston-Maximilien de Rohan de Soubise † | Cardinal-Priest of Santissima Trinità al Monte Pincio | Cardinal, Bishop of Strasbourg, France |
| 44.7 | Appointed | Damian Hugo Philipp von Schönborn Bushein † | Cardinal-Deacon of San Nicola in Carcere | Cardinal, Bishop of Speyer, Germany |
| 64.1 | Installed | Henri-Pons de Thiard de Bissy † | Cardinal-Priest of Santi Quirico e Giulitta | Cardinal, Bishop of Meaux, France |
| 17 Jun | | Born | Antoine-René Bardonnenche † | Grenoble | Bishop of Vence, France |
| 18 Jun | 45.0 | Selected | Johann Moritz Gustav von Manderscheid-Blankenheim † | Bishop of Wiener Neustadt, Austria | Archbishop of Praha {Prague}, Czech Republic |
| 20 Jun | 63.1 | Installed | Giovanni Francesco Barbarigo † | Cardinal-Priest of Santi Marcellino e Pietro | Cardinal, Bishop of Padova {Padua}, Italy |
| 21 Jun | 58.1 | Installed | Carlos Borja Centellas y Ponce de León † | Cardinal-Priest of Santa Pudenziana | Cardinal, Patriarch of West Indies, Spain |
| 23 Jun | | Born | Aymard-Chrétien-François-Michel de Nicolay † | Paris | Bishop of Verdun, France |
| 48.9 | Appointed | Benjamin Petre, O.S.B. † | Coadjutor Vicar Apostolic of London District, England, Great Britain | Vicar Apostolic |
| 48.9 | Appointed | Benjamin Petre, O.S.B. † | Titular Bishop of Prusa | Vicar Apostolic of London District, England, Great Britain |
| 30 Jun | 61.5 | Died | Jan Kazimierz de Alten Bokum † | Bishop of Chelmno (Culma, Kulm), Poland |