| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 17.4 | Professed | Wilhelm von Alhaus, O.S.C. † | Member of Canons Regular of the Order of the Holy Cross | Auxiliary Bishop of Münster, Germany |
| 30.7 | Professed | Juan Tomás de Boxadors y Sureda de San Martín, O.P. † | Member of Order of Friars Preachers | Cardinal, Cardinal-Priest of San Sisto |
| Born | Pierre-Marie-Madeleine Cortois de Balore † | Dijon | Bishop Emeritus of Nîmes, France |
| Born | Jean-Louis d’Usson de Bonac † | Paris | Bishop Emeritus of Agen, France |
| Born | Boetius Egan † | | Archbishop of Tuam, Ireland |
| Born | Iraklij Listovskyj † | Usac | Bishop of Foreign Diocese |
| 47.2 | Died | Stephanus Ladislaus Luzenszky † | Titular Bishop of Thyatira |
| 58.3 | Appointed | Andrés de Paredes y Armendáriz † | Bishop of Quito, Ecuador |
| Born | Georgius Angelus Radovani † | Scutaren | Archbishop of Bar (Antivari), Montenegro |
| Born | Henri-François de La Broue de Vareilles † | Poitiers | Bishop Emeritus of Gap, France |
| 47.0 | Died | Tomasz Załęski, O.P. † | Bishop-Elect of Bacău, Romania |
| 22.1 | Ordained Priest | Jozef Karol Zbiško † | Priest of Esztergom, Hungary | Official of Spiš, Slovakia |
| Jan | 75.0 | Died | Giovanni Battista Missiroli † | Bishop of Bertinoro, Italy |
| 3 Jan | | Born | Stefan Wojciech von Łubieński † | Iwanowice | Auxiliary Bishop of Gniezno, Poland |
| 6 Jan | 25.6 | Ordained Priest | Giuseppe Tomaso de Rossi † | Priest | Bishop of Alessandria (della Paglia), Italy |
| 8 Jan | 53.9 | Died | José María Ibáñez † | Bishop of Almería, Spain |
| 16 Jan | 60.6 | Died | Johann Anton Wallreuther † | Auxiliary Bishop of Worms, Germany |
| 17 Jan | 23.2 | Ordained Priest | Anton Maria Martin von Stegner † | Priest of Wien, Austria | Auxiliary Bishop |
| 50.3 | Died | Ernst Friedrich von Twickel † | Auxiliary Bishop of Hildesheim, Germany |
| 20 Jan | 61.1 | Appointed | Benito Crespo y Monroy, O.S. † | Bishop of Tlaxcala, México |
| 51.0 | Confirmed | Louis-François-Gabriel d’Orléans de La Motte † | Bishop of Amiens, France |
| 57.6 | Appointed | Ottavio Gasparini † | Bishop of Città di Castello, Italy |
| 37.7 | Appointed | Giuseppe di Marsciano † | Bishop of Orvieto, Italy |
| 62.2 | Appointed | Álvaro Eugenio de Mendoza Caamaño y Sotomayor † | Cardinal, Patriarch of West Indies, Spain |
| 62.2 | Appointed | Álvaro Eugenio de Mendoza Caamaño y Sotomayor † | Titular Archbishop of Pharsalus | Cardinal, Patriarch of West Indies, Spain |
| 46.1 | Appointed | Manuel de Ocio y Campo † | Bishop of Cebu, Philippines |
| 45.0 | Appointed | Nicola Paolo Pandolfelli † | Bishop of Mottola (Motula), Italy |
| 58.8 | Appointed | Felipe de los Tueros Huerta † | Archbishop of Granada, Spain |
| 24 Jan | 76.1 | Died | Louis Milon † | Bishop of Condom, France |
| 43.7 | Ordained Bishop | Christoph Nebel † | Titular Bishop of Capharnaum | Auxiliary Bishop of Mainz, Germany |
| 25 Jan | 64.9 | Died | Johann Baptist von Reinach-Hirzbach † | Coadjutor Bishop of Basel, Switzerland |
| 26 Jan | 77.0 | Died | Alessandro Falconieri † | Cardinal, Cardinal-Deacon of Santa Maria della Scala |
| Born | Andrea Benedetto Ganassoni, O.S.B. † | Brixien | Bishop of Feltre, Italy |
| 31 Jan | | Born | Joseph Franz Anton von Auersperg † | Wien | Cardinal, Bishop of Passau, Germany |
| 57.7 | Ordained Bishop | Ottavio Gasparini † | Bishop of Città di Castello, Italy |
| 45.0 | Ordained Bishop | Nicola Paolo Pandolfelli † | Bishop of Mottola (Motula), Italy |
| 2 Feb | 37.8 | Ordained Bishop | Giuseppe di Marsciano † | Bishop of Orvieto, Italy |
| 9 Feb | 67.3 | Died | Diego Astorga y Céspedes † | Cardinal, Archbishop of Toledo, Spain |
| 15 Feb | 57.1 | Appointed | Diomedes Bianconi † | Bishop of Guardialfiera (Guardia), Italy |
| 39.8 | Appointed | Francesco Guidi † | Archbishop of Pisa, Italy |
| 35.9 | Confirmed | Pierre-Jules-César de Rochechouard-Montigny † | Bishop of Evreux, France | Bishop Emeritus of Bayeux, France |
| 38.4 | Confirmed | Claude de Rouvroy de Saint-Simon † | Bishop of Metz, France |
| 63.3 | Appointed | Ladislav Szörényi † | Bishop of Sirmio (Srijem; Sirmium), Croatia |
| 45.1 | Appointed | Leone Luca Vita † | Bishop of Oppido Mamertina, Italy |
| 18 Feb | 63.2 | Resigned | Giuseppe Maria Perrimezzi, O.M. † | Bishop of Oppido Mamertina, Italy | Bishop Emeritus |
| 19 Feb | | Born | Francisco Antonio Cebrián y Valdá † | San Felipe | Cardinal, Patriarch of West Indies, Spain |
| 20 Feb | | Born | Andrés Aguiar Caamaño † | San Salvador de Cerbaña | Bishop of Mondoñedo, Spain |
| 21 Feb | 57.1 | Ordained Bishop | Diomedes Bianconi † | Bishop of Guardialfiera (Guardia), Italy |
| 45.2 | Ordained Bishop | Leone Luca Vita † | Bishop of Oppido Mamertina, Italy |
| Mar | 64.1 | Died | Domenico Rossi † | Bishop of Vulturara e Montecorvino, Italy |
| 7 Mar | 36.3 | Ordained Bishop | Claude-Antoine de Choiseul-Beaupré † | Bishop of Chalons-sur-Marne, France |
| 11 Mar | 49.0 | Died | Ferdinando Agostino Bernabei, O.P. † | Bishop of Osimo e Cingoli, Italy |
| 12 Mar | 92.2 | Died | Bonaventure Giffard † | Vicar Apostolic of London District, England, Great Britain |
| 61.6 | Succeeded | Benjamin Petre, O.S.B. † | Vicar Apostolic of London District, England, Great Britain |
| 20 Mar | | Appointed | John Linegar † | Archbishop of Dublin, Ireland |
| 36.2 | Ordained Priest | Petrus Antonius Raimondi † | Priest | Bishop of Capaccio, Italy |
| 21 Mar | 36.0 | Ordained Bishop | Pierre-Jules-César de Rochechouard-Montigny † | Bishop of Evreux, France | Bishop Emeritus of Bayeux, France |
| 23 Mar | | Born | Matthew Gibson † | Stonecroft | Vicar Apostolic of Northern District, England, Great Britain |
| 24 Mar | 65.5 | Appointed | Pompeio Aldrovandi † | Cardinal-Priest of Sant’Eusebio | Cardinal, Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 65.5 | Elevated to Cardinal | Pompeio Aldrovandi † | Cardinal, Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 57.8 | Elevated to Cardinal | Serafino Cenci † | Cardinal, Archbishop of Benevento, Italy |
| 44.4 | Appointed | Gaetano Calvani † | Bishop of Bertinoro, Italy | Bishop Emeritus |
| 63.4 | Elevated to Cardinal | Giacomo Lanfredini † | Cardinal, Bishop Emeritus of Osimo e Cingoli, Italy |
| 41.7 | Appointed | Ramón Nogués † | Bishop of Jaca, Spain |
| 63.3 | Appointed | Giuseppe Maria Perrimezzi, O.M. † | Titular Archbishop of Bostra | Bishop Emeritus of Oppido Mamertina, Italy |
| 57.5 | Elevated to Cardinal | Pietro Maria Pieri, O.S.M. † | Cardinal, Cardinal-Priest of San Giovanni a Porta Latina |
| 55.9 | Appointed | Francisco Salgado Quirago † | Bishop of Guadix, Spain |
| 27 Mar | 70.4 | Appointed | Tommaso Cervini † | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 34.7 | Appointed | Franz Joseph Anton von Hahn † | Auxiliary Bishop of Bamberg, Germany |
| 34.7 | Appointed | Franz Joseph Anton von Hahn † | Titular Bishop of Arad | Auxiliary Bishop of Bamberg, Germany |
| Apr | | Born | Nicolas Champenois, M.E.P. † | Reims, France | Vicar Apostolic of Verapoly, India |
| 1 Apr | | Born | Scipione Borghèse † | Rome | Cardinal, Prefect Emeritus of the Prefecture of the Papal Household |
| 4 Apr | 63.4 | Ordained Bishop | Ladislav Szörényi † | Bishop of Sirmio (Srijem; Sirmium), Croatia |
| 6 Apr | 28.0 | Ordained Priest | Józef Tadeusz Kierski † | Priest | Bishop of Przemyśl, Poland |
| 10 Apr | 25.7 | Ordained Priest | Luigi Satta † | Priest | Bishop of Iglesias, Italy |
| 24.9 | Ordained Priest | Jan Szemiot † | Priest | Titular Bishop of Loryma |
| 25.6 | Ordained Priest | Domenico Volpe † | Priest | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| 11 Apr | 44.5 | Ordained Bishop | Gaetano Calvani † | Bishop of Bertinoro, Italy | Bishop Emeritus |
| 12 Apr | 63.5 | Installed | Giacomo Lanfredini † | Cardinal-Deacon of Santa Maria in Portico (Campitelli) | Cardinal, Bishop Emeritus of Osimo e Cingoli, Italy |
| 40.9 | Appointed | Christian Albert Anton von Merle † | Auxiliary Bishop of Worms, Germany |
| 40.9 | Appointed | Christian Albert Anton von Merle † | Titular Bishop of Sinope | Auxiliary Bishop of Worms, Germany |
| 57.5 | Installed | Pietro Maria Pieri, O.S.M. † | Cardinal, Cardinal-Priest of San Giovanni a Porta Latina |
| 14 Apr | 75.9 | Resigned | Pier Marcellino Corradini † | Cardinal-Priest of San Giovanni a Porta Latina | Cardinal, Bishop of Frascati, Italy |
| 21 Apr | | Born | Antonio Sentmanat y Castellá † | Barcelona | Cardinal, Patriarch of West Indies, Spain |
| 23 Apr | 33.5 | Selected | Daniel-Joseph de Cosnac † | Bishop of Die, France |
| 77.3 | Died | Michel-Gabriel Rossillon de Bernex † | Bishop of Genève {Geneva}, Switzerland |
| 24 Apr | 32.3 | Ordained Priest | Paul Godefroid de Berlo de Franc-Douaire † | Priest | Bishop of Namur {Namen}, Belgium |
| 24.9 | Ordained Priest | Filippo Mazzetti † | Priest | Bishop of Fossano, Italy |
| 26 Apr | 60.4 | Died | Alexander Antoni Pleszowice Fredro † | Bishop of Przemyśl, Poland |
| Born | Francisco Veyán y Mola † | Tamarite de Litera | Bishop of Vic, Spain |
| May | 83.2 | Died | Sebastiano Pompilio Bonaventura † | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 63.7 | Ordained Bishop | Bartolomé San Martín Orive † | Bishop of Palencia, Spain |
| 1 May | 69.2 | Died | Franz Joseph Supersaxo † | Bishop of Sion {Sitten}, Switzerland |
| 2 May | 41.5 | Ordained Priest | Marcello Filomarini † | Priest | Bishop of Mileto, Italy |
| 5 May | 53.3 | Appointed | Giacomo Bonanno, C.R. † | Bishop of Patti, Italy | Archbishop of Monreale, Italy |
| 55.3 | Appointed | Gaspar de Molina y Oviedo, O.S.A. † | Cardinal, Bishop of Málaga, Spain |
| 32.3 | Confirmed | Franz Anton von Engel in Wagrain † | Bishop of Beograd (-Smederevo), Serbia | Bishop of Csanád, Hungary |
| 59.3 | Appointed | Diego González Toro y Villalobos † | Bishop of Cuenca, Spain |
| 56.4 | Appointed | Carlo Filippo Incontri † | Bishop of Arezzo, Italy |
| 46.7 | Appointed | Rizzardo Isolani † | Bishop of Senigallia, Italy |
| 63.4 | Appointed | José Manuel de Sarricolea y Olea † | Bishop of Cuzco, Peru |
| 9 May | | Born | François de Bonnal (Bonal) † | Agen | Bishop of Clermont, France |
| 46.8 | Ordained Bishop | Rizzardo Isolani † | Bishop of Senigallia, Italy |
| 62.5 | Ordained Bishop | Álvaro Eugenio de Mendoza Caamaño y Sotomayor † | Titular Archbishop of Pharsalus | Cardinal, Patriarch of West Indies, Spain |
| 12 May | 74.5 | Died | Fabrizio Pignatelli † | Bishop of Lecce, Italy |
| 13 May | | Born | Luca Nicola De Luca † | Ripalimosani | Bishop Emeritus of Trivento, Italy |
| 16 May | 56.5 | Ordained Bishop | Carlo Filippo Incontri † | Bishop of Arezzo, Italy |
| 17 May | | Born | Yves-Alexandre de Marbeuf † | Rennes | Archbishop of Lyon, France |
| 18 May | 50.2 | Selected | Johann Joseph Anton Blatter † | Bishop of Sion {Sitten}, Switzerland |
| 24 May | | Born | Diego Melo Portugal, O.S.A. † | Badajoz | Bishop of Jaén, Spain |
| 30 May | | Born | Léon-François-Ferdinand de Salignac de La Mothe-Fénelon † | La Haye | Bishop Emeritus of Lombez, France |
| 31 May | | Born | Valentin Philipp Anton Schmidt † | Arnstein | Auxiliary Bishop of Speyer, Germany |
| Jun | 43.4 | Died | Emmanuel Caranza † | Bishop of Syros (e Milos), Greece |
| 3 Jun | | Born | Francesco Antonio Duca † | Alessano | Bishop of Castro di Puglia, Italy |
| 6 Jun | 29.0 | Ordained Priest | Cesar Crescenzio de Angelis † | Priest | Bishop of Segni, Italy |
| 56.1 | Ordained Bishop | Francisco Salgado Quirago † | Bishop of Guadix, Spain |
| Born | Cyprian Stecki † | | Bishop |
| 40.3 | Ordained Bishop | Johann Joseph von Wratislaw von Mitrowitz † | Bishop of Hradec Králové, Czech Republic |
| 8 Jun | 69.5 | Died | Andrés Cid de San Pedro Fernández, O. Cist. † | Bishop of Orense, Spain |
| 11 Jun | 23.2 | Ordained Priest | Franz Anton Xaver von Scheben † | Priest of Mainz, Germany | Auxiliary Bishop of Worms, Germany |
| 14 Jun | 23.1 | Ordained Priest | Tommaso Agostino de Simone † | Priest | Bishop of Montepeloso, Italy |
| 19 Jun | 30.9 | Ordained Priest | Christophe de Beaumont du Repaire † | Priest | Archbishop of Paris, France |
| 26.6 | Selected | Johann Franz Anton von Khevenhüller † | Bishop of Wiener Neustadt, Austria | Bishop Emeritus |
| 24.5 | Ordained Priest | Giovanni Pergolini † | Priest | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 23.1 | Ordained Priest | Ciriaco Vecchioni † | Priest | Bishop of Recanati e Loreto, Italy |
| 20 Jun | 51.9 | Died | Mihály Frigyes Althan † | Cardinal, Bishop of Vác, Hungary |
| 48.1 | Ordained Bishop | José Francisco de San Buenaventura Martínez de Tejada y Díez de Velasco, O.F.M. † | Titular Bishop of Tricale | Bishop of Guadalajara, Jalisco, México |
| 24 Jun | | Born | José Joaquín Granados y Gálvez, O.F.M. † | Málaga | Bishop of Durango, México |
| 25 Jun | | Born | Antonio Cayetano Maciel Calheiros † | Vianna | Auxiliary Bishop of Lisboa {Lisbon}, Portugal |
| 27 Jun | 32.4 | Selected | François de Crussol d’Uzès † | Bishop of Blois, France | Archbishop of Toulouse, France |
| 29 Jun | 27.5 | Ordained Priest | Meletius Kovács † | Priest | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 30 Jun | 50.7 | Died | Pierre-Guillaume de La Vieuxville † | Bishop of Bayonne, France |