| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Pedro Clemente de Aróstegui (Aristegui) † | Villanueva de la Jara | Bishop of Osma, Spain |
| 28.0 | Ordained Priest | Thomas Bottaro a Sextris, O.P. † | Priest of Order of Friars Preachers | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 71.0 | Died | Baltasar Tomás Carbonell y Sánchez, O.P. † | Bishop of Sigüenza, Spain |
| 22.2 | Ordained Priest | Domenico Maria Cedronio, O.P. † | Priest of Order of Friars Preachers | Bishop of Bitonto, Italy |
| 60.0 | Died | Juan de los Ríos y Berriz † | Bishop of Santa Cruz de la Sierra, Bolivia |
| Born | Pierre-Jean-Baptiste Durand de Missy † | Rouen | Bishop of Avranches, France |
| Born | Juan González Melgarejo † | Asuncion, Paraguay | Bishop of Arequipa, Peru |
| 26.9 | Ordained Priest | James Gordon † | Priest | Vicar Apostolic of Lowland District, Scotland, Great Britain |
| Born | Ioan Inocențiu Klein (Micu), O.S.B.M. † | Transilvania | Bishop Emeritus of Făgăraş (Romanian), Romania |
| 27.7 | Ordained Priest | Armand-Pierre de la Croix de Castries † | Priest | Archbishop of Albi, France |
| Born | Gregorio de Molleda y Clerque † | Cartegena, Colombia | Archbishop of La Plata o Charcas, Bolivia |
| 59.2 | Died | Giuseppe Musotti † | Bishop of Città di Castello, Italy |
| Born | Simon István Olsavszky † | Olshavicja | Vicar Apostolic of Mukachevo (Munkács) (Ruthenian), Ukraine |
| Born | Pierre de Pardaillan de Gondrin d’Autin † | Paris | Bishop of Langres, France |
| Born | Paul de Ribeyre † | Clermont | Bishop of Saint-Flour, France |
| 48.3 | Selected | António de Saldanha † | Bishop of Portalegre, Portugal | Bishop of Guarda, Portugal |
| Born | Francisco de São Tiago, O.F.M. † | Tiagro de Sappro, Portugal | Bishop of São Luís do Maranhão, Brazil |
| Born | Michael Somma † | Balbae | Archbishop Emeritus of Skopje, Macedonia |
| 47.0 | Died | Anton Stefanov (Stephani), O.F.M. † | Bishop of Nicopoli, Bulgaria |
| Died | Patrick Tyrrell (Tyrell), O.F.M. † | Bishop of Meath, Ireland |
| 67.6 | Died | Marcantonio Vicentini † | Bishop Emeritus of Foligno, Italy |
| 77.0 | Died | Georgius Vladagni † | Bishop of Lezhë {Lesh, Alessio}, Albania |
| 64.0 | Died | Luke Wadding † | Bishop of Ferns, Ireland |
| Jan | | Born | Franciscus Mendo Trigoso † | Matacaes | Bishop of Viseu, Portugal |
| Born | Antoni Dominik Tyszkiewicz † | Lohojscen | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 5 Jan | | Born | Diego García Medrano † | Robledo de Chavela | Bishop of Segovia, Spain |
| 9 Jan | 46.0 | Appointed | Marcantonio Agazzi † | Bishop of Ceneda, Italy |
| 41.1 | Appointed | Raimondo Ferretti † | Archbishop of Ravenna, Italy |
| 50.0 | Appointed | João Franco de Oliveira † | Archbishop of São Salvador da Bahia, Brazil | Bishop of Miranda (do Douro), Portugal |
| 61.0 | Appointed | Sebastiano Perissi † | Bishop of Nocera de’ Pagani, Italy | Bishop of Grosseto, Italy |
| 13 Jan | 50.1 | Ordained Bishop | Giovanni Battista Carrone † | Bishop of Strongoli, Italy |
| 34.5 | Ordained Bishop | Marcello d’Aste † | Titular Archbishop of Athenae | Cardinal, Apostolic Nuncio to Germany |
| 47.0 | Ordained Bishop | Pietro Martire Giustiniani, O.P. † | Archbishop of Naxos, Greece | Bishop of Tinos, Greece |
| Born | Domenico Tatis, O.S.B. † | Genova | Bishop of Brugnato, Italy |
| 17 Jan | | Born | Girolamo Curlo † | Genova | Bishop of Aleria, France |
| 18 Jan | 34.5 | Appointed | Marcello d’Aste † | Apostolic Nuncio to Switzerland | Cardinal, Apostolic Nuncio to Germany |
| 20 Jan | 46.1 | Ordained Bishop | Marcantonio Agazzi † | Bishop of Ceneda, Italy |
| 26.4 | Ordained Priest | Giuseppe Antonio Davanzati † | Priest | Archbishop of Trani, Italy |
| 61.1 | Ordained Bishop | Sebastiano Perissi † | Bishop of Nocera de’ Pagani, Italy | Bishop of Grosseto, Italy |
| 21 Jan | 36.2 | Confirmed | Fabio Brulart de Sillery † | Bishop of Soissons, France |
| 59.6 | Appointed | Esprit-Valentin Fléchier † | Bishop of Nîmes, France |
| 48.6 | Confirmed | Hardouin Fortin de la Hoguette † | Archbishop of Sens, France |
| 50.1 | Appointed | Carolus de Tilly † | Bishop of Acerra, Italy | Bishop of Monopoli, Italy |
| 61.1 | Appointed | Francesco Antonio Triveri, O.F.M. Conv. † | Bishop of Andria, Italy | Bishop of Melfi e Rapolla, Italy |
| 36.2 | Confirmed | Charles-Gaspard-Guillaume de Vintimille du Luc † | Bishop of Marseille, France | Archbishop of Paris, France |
| 31.5 | Appointed | Ludwik Bartlomiej Załuski † | Bishop of Lezhë {Lesh, Alessio}, Albania | Bishop of Płock, Poland |
| 27 Jan | 37.0 | Ordained Priest | Marco Giustiniani † | Priest | Bishop of Torcello (Turris), Italy |
| 50.1 | Ordained Bishop | Carolus de Tilly † | Bishop of Acerra, Italy | Bishop of Monopoli, Italy |
| 61.1 | Ordained Bishop | Francesco Antonio Triveri, O.F.M. Conv. † | Bishop of Andria, Italy | Bishop of Melfi e Rapolla, Italy |
| 30 Jan | | Born | Francesco Pacca † | Benevento | Archbishop of Benevento, Italy |
| 31 Jan | 79.8 | Died | Mathieu Thoreau † | Bishop of Dol, France |
| 4 Feb | 51.1 | Confirmed | Armand-Louis Bonnin de Chalucet † | Bishop of Toulon, France |
| 38.1 | Confirmed | François d’Argouges † | Bishop of Vannes, France |
| 44.7 | Confirmed | Paul Godet des Marais † | Bishop of Chartres, France |
| 52.1 | Confirmed | Armand-Anne-Tristan de La Baume de Suze † | Archbishop of Auch, France |
| 8 Feb | | Died | Vladislaus Silnicki † | Auxiliary Bishop of Vilnius, Lithuania |
| 10 Feb | 66.1 | Died | Jerónimo Velasco, O.S.B. † | Bishop of Alghero, Italy |
| 11 Feb | 23.9 | Ordained Priest | Carlo Cornaccioli, O. Carm. † | Priest of Order of Our Lady of Mt. Carmel | Bishop of Bobbio, Italy |
| 13 Feb | | Born | Louis-Bernard de La Taste, O.S.B. † | Bordeaux, France | Titular Bishop of Bethleem |
| 18 Feb | | Born | Francisco Castillo Vintimilla † | Bruselas, Belgium | Bishop of Jaén, Spain |
| 24 Feb | 68.1 | Died | Filippo Alferio Ossorio † | Bishop of Fondi (Fundi), Italy |
| 40.4 | Ordained Priest | Giovanni Stefano Pastori † | Priest | Bishop of Ventimiglia, Italy |
| 26 Feb | | Born | Filippo Coscia † | Petraefusorum | Titular Bishop of Targa |
| 28 Feb | 68.1 | Died | Ulrich de Mont † | Bishop of Chur, Switzerland |
| Mar | | Born | Giovanni Andrea Balbi † | Veglen | Bishop of Pula (Pola), Croatia |
| 1 Mar | 23.9 | Ordained Priest | Giovanni Paolo Torti Rogadei, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Avellino e Frigento, Italy |
| 5 Mar | | Born | Josephus Maria Marini, O.S.A. † | Barlassina | Titular Bishop of Thagaste |
| 6 Mar | 60.2 | Confirmed | Mathurin Savary † | Bishop of Sées, France |
| 7 Mar | | Born | Giustino Bagnesi, O.S.B. † | Firenze | Bishop of Chiusi e Pienza, Italy |
| 10 Mar | 41.2 | Confirmed | Cyprien-Gabriel Bénard de Résay † | Bishop of Angoulême, France |
| 59.2 | Confirmed | François Bochart de Saron de Champigny † | Bishop of Clermont, France |
| Born | Bernardino Ciani, O.S.A. † | Siena | Bishop of Montalcino, Italy |
| 39.9 | Appointed | Gennaro Crispino † | Bishop of Minori, Italy | Bishop of Squillace, Italy |
| Appointed | José de Menezes † | Archbishop of Braga, Portugal |
| 50.2 | Confirmed | Léon de La Lane † | Bishop of Bayonne, France |
| 34.8 | Confirmed | Henri-Pons de Thiard de Bissy † | Bishop of Toul, France | Cardinal, Bishop of Meaux, France |
| 15 Mar | 41.9 | Appointed | Sebastiano Antonio Tanara † | Apostolic Nuncio to Austria | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 22 Mar | 26.7 | Ordained Priest | Denis-François Bouthillier de Chavigny † | Priest | Archbishop of Sens, France |
| 32.3 | Ordained Priest | Joseph-François Gualtieri † | Priest | Bishop of Vaison, France |
| 23 Mar | 36.4 | Ordained Bishop | Fabio Brulart de Sillery † | Bishop of Soissons, France |
| 68.6 | Appointed | Michelangelo Cotignola † | Bishop of Ischia, Italy | Bishop Emeritus |
| 24 Mar | 43.9 | Appointed | Paul Baptiste Avanian, O.P. † | Archbishop of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 41.2 | Appointed | Francesco Bonesana, C.R. † | Bishop of Caiazzo, Italy | Bishop of Como, Italy |
| 38.8 | Confirmed | Henri Feydeau de Brou † | Bishop of Amiens, France |
| 37.1 | Appointed | Marco Giustiniani † | Bishop of Torcello (Turris), Italy |
| 61.2 | Appointed | Vincenzo del Mastro (de Magistris), O.P. † | Bishop of Cassano all’Jonio, Italy |
| 44.2 | Appointed | João de Mascarenhas † | Bishop of Guarda, Portugal |
| 52.4 | Appointed | Giovanni Giuseppe Maria Orsini, C.R.L. † | Bishop of Vercelli, Italy |
| 50.2 | Confirmed | François-Clément de Poudenx † | Bishop of Tarbes, France |
| 43.2 | Appointed | Pompeo Sarnelli † | Bishop of Bisceglie, Italy |
| 59.2 | Confirmed | François Verjus † | Bishop of Grasse, France |
| 25 Mar | 51.2 | Ordained Bishop | Armand-Louis Bonnin de Chalucet † | Bishop of Toulon, France |
| 53.1 | Ordained Deacon | Giovanni Giacomo Cavallerini † | Deacon | Cardinal, Cardinal-Priest of San Bartolomeo all’Isola |
| Born | Luiz de Santa Teresa da Cruz Salgado de Castilho, O.C.D. † | Lisboa, Portugal | Bishop of Olinda, Brazil |
| 36.4 | Ordained Bishop | Charles-Gaspard-Guillaume de Vintimille du Luc † | Bishop of Marseille, France | Archbishop of Paris, France |
| 30 Mar | 53.1 | Ordained Priest | Giovanni Giacomo Cavallerini † | Priest | Cardinal, Cardinal-Priest of San Bartolomeo all’Isola |
| 38.2 | Ordained Bishop | François d’Argouges † | Bishop of Vannes, France |
| Apr | 68.7 | Ordained Bishop | Giuseppe Vittorio Alberti d’Enno † | Bishop of Trento, Italy |
| Born | Giuseppe Antonio Łodziński, O.F.M. Conv. † | Keten | Titular Bishop of Gerasa |
| 4 Apr | | Ordained Priest | Joannes Antallfi † | Priest | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| 5 Apr | 35.3 | Selected | Jean-François Chamillart † | Bishop of Dol, France | Bishop of Senlis, France |
| 23.1 | Ordained Priest | Antonio Pacecco, O.F.M. † | Priest of Order of Friars Minor | Bishop of Bisceglie, Italy |
| 6 Apr | | Selected | François-Louis de Polastron † | Bishop of Lectoure, France |
| 31.2 | Ordained Priest | Nicola Spinelli † | Priest | Bishop of Ugento, Italy |
| 7 Apr | 41.8 | Ordained Priest | Paul de Chaulnes † | Priest | Bishop of Grenoble, France |
| 33.7 | Ordained Deacon | Giorgio Cornaro † | Deacon | Cardinal, Bishop of Padova {Padua}, Italy |
| 8 Apr | 17.1 | Professed | Jean-François Boyer, C.R. † | Member of Congregation of Clerics Regular | Bishop Emeritus of Mirepoix, France |
| 33.7 | Ordained Priest | Giorgio Cornaro † | Priest | Cardinal, Bishop of Padova {Padua}, Italy |
| 9 Apr | | Died | José Jiménez de Samaniego, O.F.M. † | Bishop of Plasencia, Spain |
| 11 Apr | | Born | José Francisco Biguezal † | Vitoria | Bishop of Ciudad Rodrigo, Spain |
| 13 Apr | 65.0 | Died | Carolus Salvatori † | Bishop of Assisi, Italy |
| 14 Apr | | Born | Francisco Xavier Aranha † | Arronches | Bishop of Olinda, Brazil |
| 16 Apr | | Born | Pascual de los Herreros † | Milmarcos | Bishop of León, Spain |
| 20 Apr | 62.3 | Ordained Bishop | Francisco de Lima (Lemos), O. Carm. † | Bishop of São Luís do Maranhão, Brazil | Bishop of Olinda, Brazil |
| 23 Apr | 77.3 | Died | Josephus Eusanio, O.S.A. † | Titular Bishop of Porphyreon |
| 28 Apr | 35.0 | Selected | Ulrich von Federspiel † | Bishop of Chur, Switzerland |
| May | 59.2 | Died | Dominicus Maria Marchese, O.P. † | Bishop of Pozzuoli, Italy |
| 3 May | 27.5 | Ordained Priest | Pietro Galletti † | Priest | Bishop of Catania, Italy |
| 75.3 | Died | Francesco Tansi † | Bishop of Nicastro, Italy |
| Born | Paschalis Zaini † | Napoli | Bishop of Guardialfiera (Guardia), Italy |
| 4 May | 26.4 | Ordained Priest | Fortunato Morosini, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Brescia, Italy |
| 43.3 | Ordained Bishop | Pompeo Sarnelli † | Bishop of Bisceglie, Italy |
| 5 May | 40.3 | Confirmed | François de Caillebot de La Salle † | Bishop of Tournai {Doornik}, Belgium | Bishop Emeritus |
| 33.8 | Appointed | Giorgio Cornaro † | Titular Archbishop of Rhodus | Cardinal, Bishop of Padova {Padua}, Italy |
| 40.3 | Confirmed | Bernard d’Abbadie d’Arbocave † | Bishop of Acqs (Dax), France |
| 62.2 | Appointed | Pierre-Daniel Huet † | Bishop of Avranches, France | Bishop Emeritus |
| 56.3 | Confirmed | Charles-Antoine de la Garde de Chambonas † | Bishop of Viviers (Aps), France |
| 9 May | | Born | Giuseppe Agostino Orsi, O.P. † | Florence, Italy | Cardinal, Cardinal-Priest of San Sisto |
| 10 May | 64.6 | Appointed | Galeazzo Marescotti † | Pro-Prefect of the Congregation of the Council | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 11 May | 33.8 | Ordained Bishop | Giorgio Cornaro † | Titular Archbishop of Rhodus | Cardinal, Bishop of Padova {Padua}, Italy |
| 15 May | 46.3 | Selected | Peter Anton Gaus von Homberg † | Bishop of Pedena, Austria |
| 18 May | 31.6 | Ordained Priest | Giovanni Battista Stella † | Priest | Archbishop of Taranto, Italy |
| 23 May | | Born | Giuseppe Alfonso Miroglio † | Citta di Casale | Bishop of Alessandria (della Paglia), Italy |
| 27 May | 69.4 | Died | Ramon Sureda † | Titular Bishop of Oropus |
| 31 May | 23.1 | Ordained Priest | Francesco Antonio Finy † | Priest | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 29.5 | Ordained Priest | Francesco Saverio Guicciardi † | Priest | Bishop of Cesena, Italy |
| Jun | | Died | Patrick Russell † | Archbishop of Dublin, Ireland |
| 2 Jun | | Born | Giacinto Silvestri † | Cingoli | Bishop of Orvieto, Italy |
| 8 Jun | 94.6 | Died | Henri Arnauld † | Bishop of Angers, France |
| Born | François-Charles de Béringhen d’Armainvilliers † | Paris | Bishop of Le Puy-en-Velay, France |
| 10 Jun | | Born | Filippo Gentile † | Biscari | Bishop of Telese o Cerreto Sannita, Italy |
| 17 Jun | 73.5 | Died | Juan Asensio Barrios, O. de M. † | Bishop of Jaén, Spain |
| 50.1 | Died | Franciscus Antonius von und zu Losenstein † | Coadjutor Bishop of Olomouc (Olmütz), Czech Republic |
| 22 Jun | 24.6 | Ordained Priest | Alessandro Carlo Gaetano Varano † | Priest | Bishop of Macerata e Tolentino, Italy |
| 25 Jun | 53.4 | Appointed | Giovanni Giacomo Cavallerini † | Titular Archbishop of Nicaea | Cardinal, Cardinal-Priest of San Bartolomeo all’Isola |
| 18.0 | Professed | Luigi Maria de Dura, O.P. † | Member of Order of Friars Preachers | Bishop of Castellaneta, Italy |
| 60.2 | Appointed | Alessandro Lambert † | Bishop of Aosta, Italy | Bishop of Ivrea, Italy |
| 51.5 | Appointed | Petrus Lambertus Ledrou, O.S.A. † | Titular Bishop of Porphyreon |
| 48.1 | Appointed | Marcus de Ostos, O. de M. † | Archbishop of Salerno, Italy |
| 34.5 | Appointed | Gerolamo Ubertino Provana, C.R. † | Bishop of Alba (Pompea), Italy |
| 60.8 | Appointed | Teofilo Testa, O.F.M. † | Bishop of Tropea, Italy |
| 28 Jun | | Born | Gherardo Antonio Volpe † | S. Agata | Bishop of Nocera de’ Pagani, Italy |
| 30 Jun | 53.4 | Ordained Bishop | Giovanni Giacomo Cavallerini † | Titular Archbishop of Nicaea | Cardinal, Cardinal-Priest of San Bartolomeo all’Isola |
| 60.2 | Ordained Bishop | Alessandro Lambert † | Bishop of Aosta, Italy | Bishop of Ivrea, Italy |
| 48.2 | Ordained Bishop | Marcus de Ostos, O. de M. † | Archbishop of Salerno, Italy |
| 34.5 | Ordained Bishop | Gerolamo Ubertino Provana, C.R. † | Bishop of Alba (Pompea), Italy |
| 60.8 | Ordained Bishop | Teofilo Testa, O.F.M. † | Bishop of Tropea, Italy |