| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 28.6 | Ordained Priest | Pedro Felipe de Azúa e Iturgoyen † | Priest of Santiago de Chile | Archbishop Emeritus of Santafé en Nueva Granada, Colombia |
| 74.0 | Died | Wojciech Ignacy Bardziński † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| Resigned | Antoine-Jérôme Boyvin de Vaurouy † | Bishop-Elect of Perpignan-Elne, France | Former Bishop-Elect |
| 63.4 | Died | Juan Bravo Otálora de Lagunas † | Bishop of Arequipa, Peru |
| Born | Charles-Bernard-Collin de Contrisson † | Toul | Auxiliary Bishop of Laon, France |
| Born | Charles-Antoine-Gabriel d’Osmond de Médavy † | Médavy | Bishop Emeritus of (Saint-Bernard de) Comminges, France |
| 25.0 | Ordained Priest | François de Lastic de Saint-Jal † | Priest | Bishop of Castres, France |
| Died | Pietro Francesco Lombardi, O.F.M. † | Titular Bishop of Talia |
| Born | Domingos da Encarnação Pontevel, O.P. † | Santarem | Bishop of Mariana, Brazil |
| Born | Bertrand Reydellet, M.E.P. † | Le Grand-Abergement, France | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 22.5 | Ordained Priest | Philipp Ludwig von Sinzendorf † | Priest of Salzburg, Austria | Cardinal, Bishop of Wrocław (Breslau), Poland |
| Born | Louis-Jérême de Suffren de Saint-Tropez † | Arles | Bishop of Nevers, France |
| 50.0 | Died | Piotr Tarło † | Bishop of Poznań, Poland |
| Jan | 68.1 | Died | Nicola Centomani † | Bishop of Monopoli, Italy |
| Born | Josip Galjuf (Gallyuff) † | Thuhelien | Bishop of Zagreb (Agram), Croatia |
| 1 Jan | | Born | Claude-François-Ignace Franchet de Rans † | Besançon | Auxiliary Bishop of Besançon, France |
| 6 Jan | | Born | Andrea Gioannetti, O.S.B. † | Bologna | Cardinal, Archbishop of Bologna, Italy |
| Born | Michael Angelus Monticelli † | Rossanen | Bishop of Isola, Italy |
| 11 Jan | 39.0 | Ordained Bishop | Léonor III de Goyon de Matignon † | Bishop of Coutances, France |
| Born | Filiberto Pascali (Pascale) † | S. Vito | Bishop of Telese o Cerreto Sannita, Italy |
| 13 Jan | | Born | Krysztof Hilary Szembek † | Biała | Bishop of Płock, Poland |
| Born | Charles Walmesley, O.S.B. † | Wigan Lane House, Standish | Vicar Apostolic of Western District, England, Great Britain |
| 14 Jan | 42.3 | Appointed | Francesco Baccari † | Bishop of Telese o Cerreto Sannita, Italy |
| 47.2 | Appointed | Stanisław Józef Hozjusz † | Bishop of Kamyanets-Podilskyi, Ukraine | Bishop of Poznań, Poland |
| 48.0 | Confirmed | Denis-Alexandre Le Blanc, C.R.S.A. † | Bishop of Sarlat, France |
| 43.5 | Appointed | Bernardo Domenico Leoni † | Bishop of Nona (Nin), Croatia |
| 45.6 | Confirmed | Johann Moritz Gustav von Manderscheid-Blankenheim † | Bishop of Wiener Neustadt, Austria | Archbishop of Praha {Prague}, Czech Republic |
| 70.0 | Confirmed | Henri de Nesmond † | Archbishop of Toulouse, France |
| 62.9 | Appointed | Carlo Pignatelli, C.R. † | Bishop of Gaeta, Italy |
| 23.8 | Confirmed | Charles de Saint-Albin † | Bishop of Laon, France | Archbishop of Cambrai, France |
| 35.1 | Appointed | Nicolaus Tomasich † | Bishop of Scardona (Skradin), Italy |
| 15 Jan | 59.9 | Died | Konrad Ferdinand Geist von Wildegg † | Auxiliary Bishop of Konstanz {Constance}, Germany |
| 16 Jan | | Born | Lorenzo Potenza † | Marsiconuovo | Bishop of Sarno, Italy |
| 18 Jan | 42.3 | Ordained Bishop | Francesco Baccari † | Bishop of Telese o Cerreto Sannita, Italy |
| 20 Jan | | Ordained Bishop | Dominique-Laurent de Balbe de Berton de Crillon † | Bishop of Glandèves, France |
| 21 Jan | | Died | Antonio de Zuloaga † | Archbishop of Lima, Peru |
| 27 Jan | 15.0 | Professed | Gottfried Xaver von Laimbeckhoven, S.J. † | Member of Society of Jesus | Bishop of Nanking [Nanjing], China |
| Feb | 58.1 | Died | Vincenzo Capece † | Archbishop of Chieti, Italy |
| Born | Atanasie Rednic, O.S.B.M. † | Giuleşti-Maramureş | Bishop of Făgăraş (Romanian), Romania |
| 1 Feb | 38.1 | Ordained Bishop | Louis-Jacques Chapt de Rastignac † | Bishop of Tulle, France | Archbishop of Tours, France |
| 43.5 | Ordained Bishop | Bernardo Domenico Leoni † | Bishop of Nona (Nin), Croatia |
| 4 Feb | 85.3 | Died | Anselmo Gómez de la Torre, O.S.B. † | Bishop Emeritus of Tui, Spain |
| 5 Feb | | Born | Romoaldo Guidi † | Cesena | Cardinal, Cardinal-Deacon of San Giorgio in Velabro |
| 8 Feb | 49.0 | Ordained Bishop | Wenzel Franz Karl Koschinsky von Koschín † | Bishop of Hradec Králové, Czech Republic |
| 43.1 | Ordained Bishop | Manuel Samaniego Jaca † | Archbishop of Tarragona, Spain | Archbishop Emeritus of Burgos, Spain |
| 9 Feb | | Born | Andrea Tortona † | Nocera de Pagani | Bishop of Marsico Nuovo, Italy |
| 13 Feb | | Born | Alexander Franz Joseph Engl von und zu Wagrain † | Füssen, Germany | Bishop of Leoben, Austria |
| 26 Feb | 66.3 | Died | Francisco Rodríguez Mendarozqueta y Zárate † | Bishop of Sigüenza, Spain |
| 28 Feb | | Born | Johann Hildebrand Roten † | Raron | Bishop of Sion {Sitten}, Switzerland |
| 51.4 | Resigned | Nicola Maria Tedeschi, O.S.B. † | Bishop of Lipari, Italy | Bishop Emeritus |
| Mar | 23.0 | Ordained Priest | Francesco Paolo Carelli † | Priest | Bishop of Montepeloso, Italy |
| 49.2 | Died | Raffaele Tosti † | Bishop of Minori, Italy |
| 1 Mar | 71.7 | Died | Louis-Joseph Adhémar de Monteil de Grignan † | Bishop of Carcassonne, France |
| Succeeded | Louis-Joseph de Châteauneuf de Rochebonne † | Bishop of Carcassonne, France |
| 84.2 | Died | Domenico De Zaulis (Zaoli) † | Bishop Emeritus of Veroli, Italy |
| 2 Mar | 45.1 | Appointed | Biagio de Dura † | Bishop of Potenza, Italy |
| 50.2 | Appointed | Sebastián Foronda, O.S.A. † | Apostolic Administrator of Cebu, Philippines |
| 50.2 | Appointed | Sebastián Foronda, O.S.A. † | Titular Bishop of Calydon | Apostolic Administrator of Cebu, Philippines |
| 44.5 | Appointed | Andrea Maddalena, C.R.M. † | Bishop of Ugento, Italy | Archbishop of Brindisi, Italy |
| 43.4 | Appointed | Giuseppe Maria Martelli † | Archbishop of Firenze {Florence}, Italy | Archbishop Emeritus |
| 48.7 | Appointed | Michele Orsi † | Archbishop of Otranto, Italy |
| 51.4 | Appointed | Nicola Maria Tedeschi, O.S.B. † | Titular Archbishop of Apamea in Bithynia | Bishop Emeritus of Lipari, Italy |
| 5 Mar | | Born | Juan Molina Lario y Navarro † | Camañas | Bishop of Málaga, Spain |
| 8 Mar | 44.5 | Ordained Bishop | Andrea Maddalena, C.R.M. † | Bishop of Ugento, Italy | Archbishop of Brindisi, Italy |
| 48.7 | Ordained Bishop | Michele Orsi † | Archbishop of Otranto, Italy |
| 15 Mar | 48.2 | Ordained Bishop | Denis-Alexandre Le Blanc, C.R.S.A. † | Bishop of Sarlat, France |
| 21 Mar | 22.6 | Ordained Priest | Gaspare Lancellotti-Birago † | Priest | Bishop of Bobbio, Italy |
| 26.0 | Ordained Priest | Martinus Biro de Padany † | Priest | Bishop of Veszprém, Hungary |
| 75.5 | Died | Mateo Panduro y Villafaña, O.C.D. † | Bishop of La Paz, Bolivia |
| 23.5 | Ordained Priest | Castrensis Scaja † | Priest | Bishop of Oria, Italy |
| 20.3 | Ordained Priest | Diego Andrea Tomacelli † | Priest | Bishop of Marsico Nuovo, Italy |
| 22 Mar | 45.8 | Ordained Bishop | Johann Moritz Gustav von Manderscheid-Blankenheim † | Bishop of Wiener Neustadt, Austria | Archbishop of Praha {Prague}, Czech Republic |
| 43.5 | Ordained Bishop | Giuseppe Maria Martelli † | Archbishop of Firenze {Florence}, Italy | Archbishop Emeritus |
| 23 Mar | 44.2 | Appointed | Caietanus de’ Cavalieri † | Titular Archbishop of Tarsus |
| Appointed | Raimondo Gallani, O.P. † | Archbishop of Dubrovnik (Ragusa), Croatia |
| 54.2 | Confirmed | Paul-Robert Hertault de Beaufort † | Bishop of Lectoure, France |
| 50.4 | Confirmed | Henri-Osvald de La Tour d’Auvergne de Bouillon † | Archbishop of Vienne, France | Cardinal, Archbishop Emeritus |
| 56.1 | Appointed | Pietro Vincenzo Platamone, O.P. † | Bishop of Lipari, Italy |
| 26 Mar | 74.1 | Ordained Priest | Francisco Ignacio Añoa Busto † | Priest | Archbishop of Zaragoza, Spain |
| Apr | 84.3 | Died | Giovanni Emblaviti † | Bishop of Belcastro, Italy |
| 4 Apr | 50.6 | Ordained Deacon | Marco Antonio Ansidei † | Deacon | Cardinal, Bishop of Perugia, Italy |
| 22.9 | Ordained Priest | Gabriel Patachich † | Priest | Archbishop of Kalocsa, Hungary |
| 24.1 | Ordained Priest | Franjo Thauszy † | Priest | Bishop of Zagreb (Agram), Croatia |
| 6 Apr | 56.1 | Ordained Bishop | Pietro Vincenzo Platamone, O.P. † | Bishop of Lipari, Italy |
| 7 Apr | 44.3 | Ordained Bishop | Caietanus de’ Cavalieri † | Titular Archbishop of Tarsus |
| 9 Apr | 71.3 | Died | Angelus d’Ongnies et d’Estrées, O.F.M. Cap. † | Bishop of Roermond, Netherlands |
| 59.3 | Succeeded | François Louis Sanguessa, O.F.M. † | Bishop of Roermond, Netherlands |
| 13 Apr | 49.3 | Died | Pedro de Tapiz y Garcia † | Bishop of Durango, México |
| 16 Apr | 49.3 | Appointed | Pedro de Tapiz y Garcia † | Bishop of Guadalajara, Jalisco, México | Bishop of Durango, México |
| 19 Apr | 29.9 | Ordained Priest | Giacinto Silvestri † | Priest | Bishop of Orvieto, Italy |
| 20 Apr | 47.9 | Appointed | Archangelus Feni, O.P. † | Archbishop of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 52.5 | Appointed | Bogusław Korwin Gosiewski † | Auxiliary Bishop of Vilnius, Lithuania | Bishop of Smoleńsk, Poland |
| 52.5 | Appointed | Bogusław Korwin Gosiewski † | Titular Bishop of Achantus | Bishop of Smoleńsk, Poland |
| 44.4 | Appointed | Johann Michael Wenzel von Spaur † | Auxiliary Bishop of Trento, Italy |
| 44.4 | Appointed | Johann Michael Wenzel von Spaur † | Titular Bishop of Rhosus | Auxiliary Bishop of Trento, Italy |
| 59.2 | Appointed | Filippo Valignani, O.P. † | Archbishop of Chieti, Italy |
| 22 Apr | | Died | Francisco de Deza y Ulloa † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 26 Apr | 24.1 | Ordained Bishop | Charles de Saint-Albin † | Bishop of Laon, France | Archbishop of Cambrai, France |
| 59.2 | Ordained Bishop | Filippo Valignani, O.P. † | Archbishop of Chieti, Italy |
| 29 Apr | | Born | Francesco Carafa della Spina di Traetto † | Naples | Cardinal, Prefect of the Congregation of Bishops and Regulars |
| 67.0 | Died | Felipe Antonio Gil Taboada † | Archbishop of Sevilla {Seville}, Spain |
| May | 52.5 | Died | Domenico Maria Cedronio, O.P. † | Bishop of Bitonto, Italy |
| 1 May | | Born | Agustín Vázquez Varela, O. Cist. † | Novelúa | Bishop of Solsona, Spain |
| 2 May | 22.9 | Ordained Priest | Nicolò Caracciolo, C.R. † | Priest of Congregation of Clerics Regular | Archbishop Emeritus of Otranto, Italy |
| 3 May | 45.0 | Installed | Johann Adam von Wratislaw von Mitrowitz † | Bishop of Litoměřice, Czech Republic |
| 9 May | 21.7 | Selected | Clemens August Maria von Bayern † | Coadjutor Archbishop of Köln {Cologne}, Germany | Archbishop |
| 10 May | 50.5 | Ordained Bishop | Henri-Osvald de La Tour d’Auvergne de Bouillon † | Archbishop of Vienne, France | Cardinal, Archbishop Emeritus |
| 18 May | 45.7 | Selected | Damian Hugo Philipp von Schönborn Bushein † | Coadjutor Bishop of Konstanz {Constance}, Germany | Cardinal, Bishop of Speyer, Germany |
| 22 May | | Born | Felipe José de Tres-Palacios y Verdeja † | Avilés, Spain | Bishop of San Cristobal de la Habana, Cuba |
| 24 May | 44.5 | Ordained Bishop | Johann Michael Wenzel von Spaur † | Titular Bishop of Rhosus | Auxiliary Bishop of Trento, Italy |
| 26 May | 65.2 | Ordained Bishop | Juan Álvaro Cienfuegos Villazón, S.J. † | Bishop of Catania, Italy | Cardinal, Archbishop Emeritus of Monreale, Italy |
| 30 May | 23.0 | Ordained Priest | Bernardino Antonio Diego Bernardi, O.M. † | Priest of Order of the Minims | Bishop of Martirano (Martoranum), Italy |
| 26.4 | Ordained Priest | Jean-Charles de Ségur † | Priest | Bishop Emeritus of Saint-Papoul, France |
| Jun | 68.4 | Died | Domenico Votta † | Bishop of Isola, Italy |
| 1 Jun | 47.4 | Confirmed | Charles-François d’Hallencourt de Dromesnil † | Bishop of Verdun, France |
| 57.4 | Appointed | Juan Fernández Zapata † | Bishop of Mallorca, Spain | Bishop of León, Spain |
| 69.2 | Appointed | Gaspare Gori-Mancini, O.S.Io.Hieros. † | Bishop of Malta |
| 46.0 | Appointed | Sigismund Kollonitsch † | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 69.2 | Died | Egidio Quinto, O.F.M. † | Archbishop of Bar (Antivari), Montenegro |
| 34.4 | Appointed | Silvestro Stanà (Staria) † | Bishop of Minori, Italy |
| Appointed | Matthaeus Georgius Stuccanovich † | Archbishop of Bar (Antivari), Montenegro |
| 2 Jun | 27.3 | Selected | Armand-Jules de Rohan-Guémené † | Archbishop of Reims, France |
| 3 Jun | 79.4 | Died | Vincenzo Maria Durazzo, C.R. † | Bishop of Savona, Italy |
| 4 Jun | | Born | Michele Continisi † | Altamura | Bishop of Giovinazzo e Terlizzi, Italy |
| 6 Jun | 68.6 | Died | Asdrubale Termini † | Bishop of Siracusa, Italy |
| 7 Jun | 69.2 | Ordained Bishop | Gaspare Gori-Mancini, O.S.Io.Hieros. † | Bishop of Malta |
| 54.4 | Ordained Bishop | Paul-Robert Hertault de Beaufort † | Bishop of Lectoure, France |
| 34.4 | Ordained Bishop | Silvestro Stanà (Staria) † | Bishop of Minori, Italy |
| 9 Jun | 68.4 | Died | Pietro Alessandro Procaccini † | Bishop of Avellino-Frigento, Italy |
| 12 Jun | | Born | Bernardus Bocchini, O.F.M. Cap. † | Piove di Sacco | Bishop of Cefalonia e Zante, Greece |
| 14 Jun | 24.0 | Ordained Priest | Józef Pawłowski † | Priest | Auxiliary Bishop of Poznań, Poland |
| 22 Jun | 21.8 | Confirmed | Clemens August Maria von Bayern † | Coadjutor Archbishop of Köln {Cologne}, Germany | Archbishop |
| Died | Antonio Maldonado Minoja † | Bishop of Oviedo, Spain |
| 23 Jun | | Born | Juan Manuel Antonio Ramos Lora, O.F.M. † | Los Palacios y Villafranca, Spain | Bishop of Mérida, Venezuela |
| Born | Joannes Lucas Garagnin † | Tragurien | Archbishop of Split (Spalato), Croatia |
| 27 Jun | 72.5 | Died | Charles-Bénigne Hervé † | Bishop Emeritus of Gap, France |