| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 44.0 | Ordained Bishop | Gines (Ginesio) Barrientos, O.P. † | Titular Bishop of Troas | Auxiliary Bishop of Manila, Philippines |
| Born | Scipion-Jérôme Bégon † | Brest | Bishop of Toul, France |
| Born | Giacomo Bonanno, C.R. † | Panormi | Archbishop of Monreale, Italy |
| 26.8 | Ordained Priest | Franz Julian von Braida † | Priest of Olomouc (Olmütz), Czech Republic | Auxiliary Bishop |
| 63.0 | Died | Francisco Domonte, O. de M. † | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 61.0 | Died | Serafino Esquirro † | Bishop of Ales e Terralba, Italy |
| Born | Adalbertus von Falkenstein, O.S.B. † | Friburgi | Bishop of Csanád, Hungary |
| Died | Mark Forstall, O.S.A. † | Bishop of Kildare and Leighlin, Ireland |
| 64.0 | Died | Teodoro Gennaro, O.F.M. † | Bishop of Krk (Veglia), Croatia |
| 36.9 | Succeeded | Vartan Hunanian † | Archbishop of Lviv (Armenian), Ukraine | Coadjutor Archbishop |
| 51.0 | Resigned | Gaspar Barata de Mendonça † | Archbishop of São Salvador da Bahia, Brazil | Archbishop Emeritus |
| 36.5 | Resigned | Savo (Savio) Millini (Mellini) † | Apostolic Nuncio to Spain | Cardinal, Bishop of Nepi e Sutri, Italy |
| Born | Anthony O’Donnell, O.F.M. † | | Bishop of Raphoe, Ireland |
| Born | James O’Gallagher † | | Bishop of Kildare and Leighlin, Ireland |
| Died | Jesse Perchofer † | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 51.0 | Ordained Bishop | Francisco Pizaro de Orellana † | Bishop of Nueva Segovia, Philippines |
| 84.1 | Died | Josephus Saulnier, O.S.B. † | Auxiliary Bishop of Besançon, France |
| Appointed | Ondrej Sebestyén † | Official of Spiš, Slovakia |
| Born | Gabriel de Torres y Navarra † | Hispalen | Titular Archbishop of Melitene |
| Born | Louis-Jacques-François de Vocance † | Viviers | Bishop of Senez, France |
| 28.8 | Ordained Priest | Aleksander Benedykt Wyhowski † | Priest | Bishop of Lutsk (Łuck), Ukraine |
| Jan | 76.0 | Died | Giovanni Battista Buonacorsi † | Bishop of Colle di Val d’Elsa, Italy |
| Born | Niccolò Paolo Andrea Coscia † | Pietradefusi | Cardinal, Archbishop Emeritus of Benevento, Italy |
| 26.0 | Ordained Priest | Arthus de Lionne, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Se-Ciuen (Setchoan), China |
| 5 Jan | 70.2 | Died | Pietro Vidoni (Sr.) † | Cardinal, Bishop Emeritus of Lodi, Italy |
| 10 Jan | 73.0 | Died | Lodovico Morales, O.S.A. † | Bishop of Tropea, Italy |
| 13 Jan | 37.0 | Appointed | Andrea Brancaccio, C.R. † | Bishop of Conversano, Italy | Archbishop of Cosenza, Italy |
| 61.9 | Appointed | Hyacinthus Dimitri, O.P. † | Bishop of Senj (-Modruš), Croatia |
| 59.0 | Appointed | Juan Grande Santos de San Pedro † | Bishop of Almería, Spain | Bishop of Sigüenza, Spain |
| 48.4 | Appointed | Tommaso Guzzoni, C.O. † | Bishop of Sora, Italy | Bishop Emeritus |
| 38.9 | Appointed | Albert van Hornes † | Bishop of Gent {Ghent, Gand}, Belgium |
| 21 Jan | 62.9 | Died | Benedetto Cappelletti † | Archbishop Emeritus of Manfredonia, Italy |
| 22 Jan | | Born | Johann Christian Adam von Königsfeld † | Zaitzkofen | Titular Bishop of Erythrae |
| 26 Jan | 37.1 | Ordained Bishop | Andrea Brancaccio, C.R. † | Bishop of Conversano, Italy | Archbishop of Cosenza, Italy |
| 48.4 | Ordained Bishop | Tommaso Guzzoni, C.O. † | Bishop of Sora, Italy | Bishop Emeritus |
| 35.1 | Ordained Bishop | Augustyn Michal Stefan Radziejowski † | Bishop of Warmia (Ermland), Poland | Cardinal, Archbishop of Gniezno, Poland |
| 27 Jan | 40.1 | Appointed | Agostino Flavio Macedonich, O.F.M. † | Bishop of Stagno (Ston), Croatia |
| Feb | | Born | Gaetano Costa, O.F.M. † | Portugallen | Bishop of Crotone (Cotrone), Italy |
| 1 Feb | 73.1 | Died | Johann Eberhard Nidhard (Neidhardt), S.J. † | Cardinal, Cardinal-Priest of Santa Croce in Gerusalemme |
| 3 Feb | 58.1 | Died | Alexander da Silva † | Bishop of Elvas, Portugal |
| Born | Casimiro Rossi Reyna, O.F.M. † | Mediolanen | Titular Bishop of Capsus |
| 6 Feb | 73.1 | Died | Joachim Luzinszky † | Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 8 Feb | 76.1 | Died | Jean d’Olce † | Bishop of Bayonne, France |
| 9 Feb | | Born | Antonio Saverio Gentili † | Rome, Italy | Cardinal, Prefect of the Congregation of the Council |
| 10 Feb | 17.8 | Selected | Alexander Sigmund am Rhein zu Neuburg † | Coadjutor Bishop of Augsburg, Germany | Bishop |
| 22 Feb | 58.7 | Appointed | Antonio Sanz Lozano † | Archbishop of Santafé en Nueva Granada, Colombia |
| 23 Feb | 40.1 | Ordained Bishop | Agostino Flavio Macedonich, O.F.M. † | Bishop of Stagno (Ston), Croatia |
| 1 Mar | 23.1 | Ordained Priest | Vincenzo Ferrero, O.P. † | Priest of Order of Friars Preachers | Bishop of Lucera, Italy |
| 3 Mar | 39.2 | Appointed | Miguel de Benavides y Piedrola † | Bishop of Cartagena, Colombia |
| 58.7 | Confirmed | Emerich (Johann Anton) Sinelli, O.F.M. Cap. † | Bishop of Wien, Austria |
| 16 Mar | 46.3 | Ordained Bishop | José de Barros Alarcão † | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 61.2 | Died | Pedro de Copons i de Teixidor † | Bishop of Urgell, Spain |
| 17 Mar | 31.2 | Confirmed | Humbert Ancelin † | Bishop of Tulle, France | Bishop Emeritus |
| 41.2 | Appointed | Luc d’Aquin † | Bishop of Fréjus, France | Bishop Emeritus |
| 61.2 | Appointed | Giulio Vincenzo Gentile, O.P. † | Archbishop of Genova, Italy |
| 61.2 | Appointed | Juan Herrero Jaraba † | Bishop of Plasencia, Spain |
| 56.2 | Appointed | Konstanty Samuel Lipski † | Archbishop of Lviv, Ukraine |
| 29.8 | Confirmed | Louis-Antoine de Noailles † | Bishop of Chalons-sur-Marne, France | Cardinal, Archbishop of Paris, France |
| 65.5 | Resigned | Giambattista Spínola (Sr.) † | Archbishop of Genova, Italy | Cardinal, Archbishop Emeritus |
| Appointed | Giovanni de Torrecilla y Cardenas † | Archbishop of Brindisi, Italy |
| 18 Mar | 52.6 | Died | Francescantonio de Marco † | Bishop of Castro di Puglia, Italy |
| 21 Mar | 50.3 | Selected | Louis Aube de Roquemartine † | Bishop of Saint-Paul-Trois-Châteaux, France |
| 25 Mar | 23.5 | Ordained Priest | Giuseppe Rottario (Rovero) † | Priest | Bishop of Alba (Pompea), Italy |
| 27 Mar | | Born | Joaquín Fernández de Portocarrero Mendoza † | Madrid, Spain | Cardinal, Cardinal-Bishop of Sabina |
| 69.2 | Died | Maciej Marian Kurski, O.F.M. † | Auxiliary Bishop of Poznań, Poland |
| Apr | 74.3 | Died | Augustinus de Angelis, C.R.S. † | Bishop of Umbriatico (Umbriaticum), Italy |
| 3 Apr | 64.3 | Died | Francesco Martinelli, C.O. † | Bishop of Patti, Italy |
| 5 Apr | 31.3 | Ordained Priest | Wilhelm von Leslie † | Priest of Wien, Austria | Bishop of Ljubljana, Slovenia |
| 6 Apr | 59.3 | Died | Scipione de Martinis † | Bishop of Polignano (Polinianum), Italy | Bishop Emeritus of Trebinje e Mrkan, Bosnia and Herzegovina |
| Died | Giuseppe Zandemaria † | Bishop of Piacenza, Italy |
| 7 Apr | | Born | Elias Daniel von Sommerfeld † | Birkholz | Auxiliary Bishop Emeritus of Wrocław (Breslau), Poland |
| 11 Apr | 79.3 | Died | Bartolomeo Gera (Giera) † | Bishop of Feltre, Italy |
| 61.3 | Died | Nicolas Ladvocat-Billiard † | Bishop of Boulogne (-Sur-Mer), France |
| 13 Apr | 40.3 | Ordained Bishop | Juan Durán, O. de M. † | Titular Bishop of Zenopolis in Lycia | Auxiliary Bishop of Cebu, Philippines |
| 14 Apr | 39.2 | Appointed | Ottavio del Rosso † | Bishop of Volterra, Italy |
| 70.3 | Appointed | Francisco López Urraca, O.S.A. † | Bishop of Barbastro, Spain |
| 44.9 | Appointed | Pier Matteo Petrucci, C.O. † | Bishop of Jesi, Italy | Cardinal, Bishop Emeritus |
| 28.0 | Ordained Priest | Jan Mikolaj Zgierski † | Priest | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 61.3 | Appointed | Benedictus Zuchorski † | Auxiliary Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 61.3 | Appointed | Benedictus Zuchorski † | Titular Bishop of Mallus | Auxiliary Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 18 Apr | 87.3 | Died | Jean du Haut de Sallies † | Bishop of Lescar, France |
| 20 Apr | 39.2 | Ordained Bishop | Ottavio del Rosso † | Bishop of Volterra, Italy |
| 44.9 | Ordained Bishop | Pier Matteo Petrucci, C.O. † | Bishop of Jesi, Italy | Cardinal, Bishop Emeritus |
| 21 Apr | | Born | Stanislao Poliastri † | Cusentin | Archbishop of Rossano, Italy |
| 25 Apr | | Born | Camillo Cibo (Cybo) † | Massa, Italy | Cardinal, Cardinal-Priest of Santa Maria degli Angeli |
| 27 Apr | 61.3 | Died | Juan Herrero Jaraba † | Bishop of Plasencia, Spain |
| 62.3 | Died | Dominique de Ligni † | Bishop of Meaux, France |
| 28 Apr | 30.9 | Confirmed | Louis-Joseph Adhémar de Monteil de Grignan † | Bishop of Evreux, France | Bishop of Carcassonne, France |
| 64.3 | Confirmed | Louis d’Anglure de Bourlemont † | Archbishop of Bordeaux, France |
| 47.8 | Appointed | Péter Korompay † | Bishop of Vác, Hungary | Bishop of Nitra, Slovakia |
| 54.3 | Appointed | Juan Marín y Rodezno † | Bishop of Badajoz, Spain |
| 39.3 | Appointed | Carlo Riggio † | Bishop of Mazara del Vallo, Italy |
| Appointed | Francisco de Seijas Losada † | Archbishop of Santiago de Compostela, Spain |
| 1 May | 23.9 | Ordained Priest | Domenico Ballati-Nerli, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Colle di Val d’Elsa, Italy |
| 2 May | 30.9 | Selected | Louis-Joseph Adhémar de Monteil de Grignan † | Bishop of Carcassonne, France |
| 39.3 | Selected | Jacques Potier de Novion † | Bishop of Evreux, France |
| 4 May | 58.8 | Ordained Bishop | Emerich (Johann Anton) Sinelli, O.F.M. Cap. † | Bishop of Wien, Austria |
| 9 May | 36.5 | Selected | Claude Le Tonnelier de Breteuil † | Bishop of Boulogne (-Sur-Mer), France |
| 12 May | 51.4 | Appointed | Giuseppe Nicola Giberti † | Bishop of Teano, Italy | Bishop Emeritus |
| 58.4 | Appointed | Jan Małachowski † | Bishop of Kraków, Poland |
| 40.4 | Appointed | Ottavio Paravicino † | Bishop of Mileto, Italy |
| 54.3 | Appointed | Juan de Porras y Atienza † | Bishop of Ceuta, Spain | Bishop of Coria, Spain |
| 14 May | | Appointed | Raphael de Figueredo † | Titular Bishop of Hadrumetum |
| Born | Manuel Isidro Orozco Manrique de Lara † | Madrid | Archbishop of Santiago de Compostela, Spain |
| 15 May | | Born | Augustin-Roch de Menou de Charnisai † | Menon | Bishop of La Rochelle, France |
| 18 May | 31.4 | Ordained Bishop | Humbert Ancelin † | Bishop of Tulle, France | Bishop Emeritus |
| 51.4 | Ordained Bishop | Giuseppe Nicola Giberti † | Bishop of Teano, Italy | Bishop Emeritus |
| 40.4 | Ordained Bishop | Ottavio Paravicino † | Bishop of Mileto, Italy |
| 19 May | 43.8 | Selected | Louis de Thomassin † | Bishop of Sisteron, France |
| 20 May | 62.4 | Died | Judocus Houbraken † | Vicar Apostolic of ’s Hertogenbosch (Bois-le-Duc), Netherlands |
| 21 May | 53.7 | Selected | Jacques-Bénigne Bossuet † | Bishop of Meaux, France |
| 24 May | 72.4 | Died | Celio Piccolomini † | Cardinal, Archbishop of Siena, Italy |
| 30 May | 64.4 | Selected | Théodore-Germain Allart, O.F.M. † | Bishop of Vence, France |
| 58.4 | Selected | Gabriel de La Roque-Prielé † | Bishop of Bayonne, France |
| 31 May | 71.4 | Died | Juan de Escalante Turcios y Mendoza † | Bishop of Yucatán (Mérida), México |
| 76.6 | Died | Jesse Perkhofer † | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 1 Jun | | Ordained Bishop | Henri-Guillaume Le Jay † | Bishop of Cahors, France |
| 2 Jun | 53.3 | Resigned | César d’Estrées † | Bishop of Laon, France | Cardinal, Bishop Emeritus |
| 30.4 | Appointed | Jean d’Estrées † | Bishop of Laon, France |
| 53.4 | Died | Agostino Isimbardi, O.S.B. † | Bishop of Cremona, Italy |
| 54.4 | Appointed | José de Lencastre, O. Carm. † | Bishop of Leiria, Portugal | Bishop Emeritus |
| 61.4 | Appointed | Bonaventura Madaliński † | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 51.4 | Appointed | Pedro de Salazar Gutiérrez de Toledo, O. de M. † | Bishop of Salamanca, Spain | Cardinal, Bishop of Córdoba, Spain |
| 52.5 | Appointed | Matthias Starck † | Auxiliary Bishop of Mainz, Germany | Auxiliary Bishop Emeritus |
| 52.5 | Appointed | Matthias Starck † | Titular Bishop of Coronea | Auxiliary Bishop Emeritus of Mainz, Germany |
| Appointed | Arcangelo Tipaldi, O.F.M. † | Bishop of L’Aquila, Italy |
| 19 Jun | | Born | Octavius da Pozzo † | Castri Maris | Bishop of Catanzaro, Italy |
| 23 Jun | 35.5 | Confirmed | Hippolyte de Béthune † | Bishop of Verdun, France |
| 59.5 | Appointed | Ignatius Fiumi, O.P. † | Bishop of Polignano (Polinianum), Italy |
| 68.1 | Appointed | Bernardino Masseri † | Bishop of Anagni, Italy |
| 42.5 | Selected | Jan Kazimierz Opaliński, O. Cist. † | Bishop of Chelmno (Culma, Kulm), Poland |
| 64.5 | Appointed | Federico Visconti † | Cardinal, Archbishop of Milano {Milan}, Italy |
| 24 Jun | 59.5 | Ordained Bishop | Ignatius Fiumi, O.P. † | Bishop of Polignano (Polinianum), Italy |
| 68.1 | Ordained Bishop | Bernardino Masseri † | Bishop of Anagni, Italy |
| Ordained Bishop | Arcangelo Tipaldi, O.F.M. † | Bishop of L’Aquila, Italy |
| 26 Jun | 55.5 | Confirmed | Franz Emmerich Kaspar von Waldbott von Bassenheim † | Bishop of Worms, Germany | Bishop-Elect |
| 30 Jun | | Resigned | Payo Enríquez de Rivera Manrique, O.S.A. † | Archbishop of México, Federal District | Archbishop Emeritus |