| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 34.8 | Ordained Priest | Juan Álvaro Cienfuegos Villazón, S.J. † | Priest of Society of Jesus | Cardinal, Archbishop Emeritus of Monreale, Italy |
| Born | Pedro Clemente de Aróstegui (Aristegui) † | | Bishop of Osma, Spain |
| 71.2 | Resigned | Jean Antoine Blavier, O.F.M. Conv. † | Auxiliary Bishop of Liège, Belgium | Auxiliary Bishop Emeritus |
| 28.0 | Ordained Priest | Thomas (a Sestri) Bottaro, O.P. † | Priest of Order of Friars Preachers | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 22.1 | Ordained Priest | Domenico Maria Cedronio, O.P. † | Priest of Order of Friars Preachers | Bishop of Bitonto, Italy |
| Born | Pierre-Jean-Baptiste Durand de Missy † | | Bishop of Avranches, France |
| Born | Juan González Melgarejo † | | 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. † | | Bishop Emeritus of Făgăraş (Romanian), Romania |
| 27.7 | Ordained Priest | Armand-Pierre de la Croix de Castries † | Priest | Archbishop of Albi, France |
| Confirmed | Ivan Małachowski † | Bishop of Chełm and Bełz (Ukrainian), Poland |
| 59.1 | Resigned | Giuseppe Musotti † | Bishop of Città di Castello, Italy | Bishop Emeritus |
| 48.0 | Appointed | Deodat Nersesowicz † | Apostolic Administrator of Lviv (Armenian), Ukraine | Coadjutor Archbishop |
| Born | Pierre de Pardaillan de Gondrin d’Autin † | | Bishop of Langres, France |
| Died | Jean Pin, M.E.P. † | Administrator of Chekiang {Ce-Kiam}, China |
| 46.0 | Selected | Franciszek Mikołaj Prażmowski † | Bishop of Lutsk (Łuck), Ukraine |
| 66.3 | Died | Augustin Reding, O.S.B. † | Abbot of Maria Einsiedeln, Switzerland |
| 47.0 | Died | Anton Stefanov (Stephani), O.F.M. Obs. † | Bishop of Nicopoli, Bulgaria |
| 32.0 | Ordained Bishop | Ludovicus Tolibowski † | Titular Bishop of Sebaste in Cilicia | Auxiliary Bishop of Płock, Poland |
| 67.5 | Died | Marcantonio Vincentini † | Bishop Emeritus of Foligno, Italy |
| Ordained Bishop | Bernardo de Vicuña Zuazo † | Bishop of Islas Canarias {Canary Islands}, Spain |
| 31.0 | Ordained Priest | Thomas Dominic Williams, O.P. † | Priest of Order of Friars Preachers | Vicar Apostolic of Northern District, England, Great Britain |
| Jan | 31.9 | Appointed | François-Marie Abbati † | Apostolic Internuncio to Portugal | Bishop of Carpentras, France |
| 5 Jan | | Born | Diego García de Medrano † | | Bishop of Segovia, Spain |
| 7 Jan | | Born | Francisco Mendo Trigoso † | | Bishop of Viseu, Portugal |
| 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 | 50.0 | Ordained Bishop | Giovanni Battista Carrone † | Bishop of Strongoli, Italy |
| 34.4 | 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 and Mykonos, Greece |
| Ordained Bishop | Antonio a Saint Theresia, O.F.M. † | Bishop of Malacca, Singapore |
| Born | Domenico Tatis, O.S.B. † | | Bishop of Brugnato, Italy |
| Born | Antoni Dominik Tyszkiewicz † | | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 17 Jan | | Born | Girolamo Curlo, C.R.M. † | | Bishop of Aleria, France |
| 20 Jan | 46.0 | Ordained Bishop | Marcantonio Agazzi † | Bishop of Ceneda, Italy |
| 36.9 | Ordained Deacon | Marco Giustiniani † | Deacon | Bishop of Torcello (Turris), Italy |
| 61.0 | 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 | Confirmed | Esprit-Valentin Fléchier † | Bishop of Nîmes, France |
| 48.5 | Confirmed | Hardouin Fortin de la Hoguette † | Archbishop of Sens, France |
| 50.0 | Appointed | Carolus de Tilly † | Bishop of Acerra, Italy | Bishop of Monopoli, Italy |
| 61.0 | Appointed | Francesco Antonio Triveri, O.F.M. Conv. † | Bishop of Andria, Italy | Bishop of Melfi e Rapolla, Italy |
| 36.1 | Confirmed | Charles-Gaspard-Guillaume de Vintimille du Luc † | Bishop of Marseille, France | Archbishop of Paris, France |
| 31.4 | Appointed | Ludwik Bartlomiej Załuski † | Auxiliary Bishop of Przemyśl, Poland | Bishop of Płock, Poland |
| 31.4 | Appointed | Ludwik Bartlomiej Załuski † | Titular Bishop of Lezhë {Lesh, Alessio}, Albania | Bishop of Płock, Poland |
| 23 Jan | 41.7 | Resigned | Sebastiano Antonio Tanara † | Apostolic Nuncio to Portugal | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 27 Jan | 36.9 | Ordained Priest | Marco Giustiniani † | Priest | Bishop of Torcello (Turris), Italy |
| 50.0 | Ordained Bishop | Carolus de Tilly † | Bishop of Acerra, Italy | Bishop of Monopoli, Italy |
| 61.0 | Ordained Bishop | Francesco Antonio Triveri, O.F.M. Conv. † | Bishop of Andria, Italy | Bishop of Melfi e Rapolla, Italy |
| 30 Jan | | Born | Francesco Pacca † | | Archbishop of Benevento, Italy |
| 31 Jan | 79.7 | Died | Mathieu Thoreau † | Bishop of Dol, France |
| 4 Feb | 51.0 | Confirmed | Armand-Louis Bonnin de Chalucet † | Bishop of Toulon, France |
| 38.0 | Confirmed | François d’Argouges † | Bishop of Vannes, France |
| 44.6 | Confirmed | Paul Godet des Marais † | Bishop of Chartres, France |
| 52.0 | Confirmed | Armand-Anne-Tristan de La Baume de Suze † | Archbishop of Auch, France |
| 53.0 | Died | Francesco Niccolini † | Apostolic Nuncio to France |
| 8 Feb | | Died | Vladislaus Silnicki † | Auxiliary Bishop of Vilnius, Lithuania |
| 10 Feb | 67.1 | Died | Jerónimo Velasco y Mendoza, 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. † | | Titular Bishop of Bethleem |
| 16 Feb | | Born | Giovanni Domenico Mansi, O.M.D. † | | Archbishop of Lucca, Italy |
| 18 Feb | | Born | Francisco Castillo Vintimilla † | | Bishop of Jaén, Spain |
| 22 Feb | 40.4 | Ordained Deacon | Giovanni Stefano Pastori † | Deacon | Bishop of Ventimiglia, Italy |
| 23 Feb | 34.5 | Appointed | Marcello d’Aste † | Apostolic Nuncio to Switzerland | Cardinal, Apostolic Nuncio to Germany |
| 24 Feb | 40.4 | Ordained Priest | Giovanni Stefano Pastori † | Priest | Bishop of Ventimiglia, Italy |
| 26 Feb | | Born | Filippo Coscia † | | Titular Bishop of Targa |
| 28 Feb | 68.1 | Died | Ulrich de Mont † | Bishop of Chur, Switzerland |
| Mar | 70.8 | Resigned | Bartolomeo Menatti † | Apostolic Nuncio to Switzerland | Bishop of Lodi, Italy |
| Resigned | Stefano Giuseppe Menatti † | Vicegerent of Roma {Rome}, Italy | Bishop of Como, Italy |
| 1 Mar | 23.8 | Ordained Priest | Giovanni Paolo Torti Rogadei, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Avellino e Frigento, Italy |
| 5 Mar | | Born | Giuseppe Maria Carlo Antonio Marini, O.E.S.A. † | | Titular Bishop of Thagaste |
| 7 Mar | | Born | Giustino Girolamo Bagnesi, O.S.B. † | | Bishop of Chiusi e Pienza, Italy |
| 10 Mar | | Born | Giovanni Andrea Balbi † | | Bishop of Pula (Pola), Croatia |
| 42.1 | Confirmed | Cyprien-Gabriel Bénard de Résay † | Bishop of Angoulême, France |
| 59.1 | Confirmed | François Bochart de Saron de Champigny † | Bishop of Clermont, France |
| Born | Bernardino Ciani, O.E.S.A. † | | Bishop of Montalcino, Italy |
| 39.8 | Appointed | Gennaro Crespino † | Bishop of Minori, Italy | Bishop of Squillace, Italy |
| Appointed | José de Menezes † | Archbishop of Braga, Portugal |
| 50.1 | Confirmed | Léon de La Lane † | Bishop of Bayonne, France |
| 34.7 | Confirmed | Henri-Pons de Thiard de Bissy † | Bishop of Toul, France | Cardinal, Bishop of Meaux, France |
| 11 Mar | 41.9 | Appointed | Sebastiano Antonio Tanara † | Apostolic Nuncio to Emperor | 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 |
| 22.6 | Ordained Deacon | Epifanio di Napoli, O.S.B.M. † | Deacon of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Titular Bishop of Lystra |
| 22.1 | Ordained Deacon | Domenico Rossi † | Deacon | Bishop of Vulturara e Montecorvino, Italy |
| 23 Mar | 36.4 | Ordained Bishop | Fabio Brulart de Sillery † | Bishop of Soissons, France |
| 24 Mar | 43.8 | Appointed | Paul Baptiste Avanian, O.P. † | Archbishop of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 42.8 | Appointed | Francesco Giambattista Bonesana, C.R. † | Bishop of Caiazzo, Italy | Bishop of Como, Italy |
| 68.4 | Appointed | Michelangelo Cotignola † | Bishop of Ischia, Italy | Bishop Emeritus |
| 38.7 | Confirmed | Henri Feydeau de Brou † | Bishop of Amiens, France |
| 37.1 | Appointed | Marco Giustiniani † | Bishop of Torcello (Turris), Italy |
| 45.2 | Elected | Raphael (Franz Otmar) Gottrau, O.S.B. † | Abbot of Maria Einsiedeln, Switzerland | Abbot Emeritus |
| 61.1 | Appointed | Vincenzo de Magistris (del Mastro), O.P. † | Bishop of Cassano all’Jonio, Italy |
| 44.2 | Appointed | João de Mascarenhas † | Bishop of Guarda, Portugal |
| 52.3 | Appointed | Giovanni Giuseppe Maria Orsini, C.R.L. † | Bishop of Vercelli, Italy |
| 50.2 | Confirmed | François-Clément de Poudenx † | Bishop of Tarbes, France |
| 43.1 | Appointed | Pompeo Sarnelli † | Bishop of Bisceglie, Italy |
| 60.2 | Confirmed | Mathurin Savary † | Bishop of Sées {Séez}, France |
| 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. † | | Bishop of Olinda, Brazil |
| 36.3 | 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 |
| 37.1 | Ordained Bishop | Marco Giustiniani † | Bishop of Torcello (Turris), Italy |
| 1 Apr | 58.2 | Appointed | Orazio Fortunato † | Vicegerent of Roma {Rome}, Italy | Bishop of Nardò, Italy |
| 4 Apr | | Ordained Priest | Johannes Antalfi † | Priest | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| 5 Apr | 71.2 | Died | Baltasar Tomás Carbonell y Sánchez, O.P. † | Bishop of Sigüenza, Spain |
| 35.2 | Selected | Jean-François Chamillart † | Bishop of Dol, France | Bishop of Senlis, France |
| 22.3 | Ordained Deacon | Giovanni Pietro Faccolli † | Deacon | Bishop of Troia, Italy |
| 29.3 | Ordained Deacon | Francesco Saverio Guicciardi † | Deacon | Bishop of Cesena, Italy |
| 23.0 | Ordained Priest | Antonio da Frosinone Pacicco, O.F.M. Obs. † | Priest of Order of Observant Friars Minor | Bishop of Bisceglie, Italy |
| 39.2 | Selected | François-Louis de Polastron † | Bishop of Lectoure, France |
| 6 Apr | 31.1 | Ordained Priest | Nicola Spinelli † | Priest | Bishop of Ugento, Italy |
| 7 Apr | 42.8 | Ordained Bishop | Francesco Giambattista Bonesana, C.R. † | Bishop of Caiazzo, Italy | Bishop of Como, Italy |
| 41.7 | Ordained Priest | Paul de Chaulnes † | Priest | Bishop of Grenoble, France |
| 33.6 | Ordained Deacon | Giorgio Cornaro † | Deacon | Cardinal, Bishop of Padova {Padua}, Italy |
| 8 Apr | 17.0 | Professed | Jean-François Boyer, C.R. † | Member of Congregation of Clerics Regular | Bishop Emeritus of Mirepoix, France |
| 33.6 | Ordained Priest | Giorgio Cornaro † | Priest | Cardinal, Bishop of Padova {Padua}, Italy |
| 11 Apr | | Born | José Francisco Biguezal † | | Bishop of Ciudad Rodrigo, Spain |
| 13 Apr | 65.0 | Died | Carolus Salvatori † | Bishop of Assisi, Italy |
| Born | Francisco de São Tiago, O.F.M. Obs. † | | Bishop of São Luís do Maranhão, Brazil |
| 14 Apr | | Born | Francisco Xavier Aranha † | | Bishop of Olinda, Brazil |
| 16 Apr | | Born | Pascual de los Herreros † | | 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 |
| 22 Apr | 73.3 | Died | Juan Asensio Barrios, O. de M. † | Bishop of Jaén, Spain |
| 23 Apr | 73.3 | Died | Giuseppe Eusanio, O.S.A. † | Titular Bishop of Porphyreon |
| 26 Apr | | Born | Józef Antoni Łodziński, O.F.M. Conv. † | | Auxiliary Bishop of Inflanty (Livonia)-Pilten, Poland |
| 28 Apr | 34.9 | Selected | Ulrich von Federspiel † | Bishop of Chur, Switzerland |
| May | 59.1 | Died | Dominicus Maria Marchese, O.P. † | Bishop of Pozzuoli, Italy |
| 3 May | 27.5 | Ordained Priest | Pietro Galletti † | Priest | Bishop of Catania, Italy |
| 26.4 | Ordained Deacon | Fortunato Morosini, O.S.B. † | Deacon of Order of Saint Benedict | Bishop of Brescia, Italy |
| 75.3 | Died | Francesco Tansi † | Bishop of Nicastro, Italy |
| Born | Paschalis Zaini † | | 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 |
| 43.2 | 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 |
| 33.7 | 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 |
| 6 May | 33.7 | Appointed | Giorgio Cornaro † | Apostolic Nuncio to Portugal | Cardinal, Bishop of Padova {Padua}, Italy |
| 8 May | | Born | Gregorio de Molleda y Clerque † | | Archbishop of La Plata o Charcas, Bolivia |
| 9 May | | Born | Giuseppe Agostino Orsi, O.P. † | | Cardinal, Cardinal-Priest of San Sisto |
| Born | Sigismondo Tudisi † | | Bishop of Trebinje e Mrkan, Bosnia and Herzegovina |
| 10 May | 64.6 | Appointed | Galeazzo Marescotti † | Pro-Prefect of the Congregation of the Council | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 11 May | 33.7 | 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 |
| 31.6 | Ordained Deacon | Giovanni Battista Stella † | Deacon | Archbishop of Taranto, Italy |
| 18 May | 31.6 | Ordained Priest | Giovanni Battista Stella † | Priest | Archbishop of Taranto, Italy |
| 23 May | | Born | Giuseppe Alfonso Miroglio † | | Bishop of Alessandria (della Paglia), Italy |
| 27 May | 72.4 | Died | Ramón Sureda Santa Cilia † | Auxiliary Bishop of Mallorca, Spain |
| 31 May | 22.0 | Ordained Deacon | Nicola Cani, O.P. † | Deacon of Order of Friars Preachers | Bishop of Bosa, Italy |
| 23.0 | Ordained Priest | Francesco Antonio Finy † | Priest | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 29.4 | Ordained Priest | Francesco Saverio Guicciardi † | Priest | Bishop of Cesena, Italy |
| Jun | 32.3 | Resigned | François-Marie Abbati † | Apostolic Internuncio to Portugal | Bishop of Carpentras, France |
| 2 Jun | | Born | Giacinto Silvestri † | | Bishop of Orvieto, Italy |
| 8 Jun | 94.6 | Died | Henri Arnauld † | Bishop of Angers, France |
| Born | François-Charles de Béringhen d’Armainvilliers † | | Bishop of Le Puy-en-Velay, France |
| 10 Jun | | Born | Filippo Gentile † | | Bishop of Telese o Cerreto Sannita, Italy |
| 14 Jun | 71.4 | Died | José Jiménez de Samaniego, O.F.M. † | Bishop of Plasencia, Spain |
| 17 Jun | 50.0 | Died | Franciscus Antonius von und zu Losenstein † | Coadjutor Bishop of Olomouc (Olmütz), Czechia |
| 22 Jun | 24.4 | Ordained Priest | Alessandro Carlo Gaetano Varano † | Priest | Bishop of Macerata e Tolentino, Italy |
| 25 Jun | 53.3 | 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 |
| 51.4 | Appointed | Pierre Lambert Ledrou, O.E.S.A. † | Titular Bishop of Porphyreon |
| 48.1 | Appointed | Marcos de Ostos, O. de M. † | Archbishop of Salerno, Italy |
| 34.4 | Appointed | Gerolamo Ubertino Provana, C.R. † | Bishop of Alba (Pompea), Italy |
| 60.7 | Appointed | Teofilo Testa, O.F.M. Obs. † | Bishop of Tropea, Italy |
| 28 Jun | | Born | Gherardo Antonio Volpe † | | Bishop of Nocera de’ Pagani, Italy |
| 30 Jun | 53.3 | Appointed | Giovanni Giacomo Cavallerini † | Apostolic Nuncio to France | Cardinal, Cardinal-Priest of San Bartolomeo all’Isola |
| 53.3 | Ordained Bishop | Giovanni Giacomo Cavallerini † | Titular Archbishop of Nicaea | Cardinal, Cardinal-Priest of San Bartolomeo all’Isola |
| 22.6 | Ordained Deacon | Bogusław Korwin Gosiewski † | Deacon | Bishop of Smoleńsk, Poland |
| 60.2 | Ordained Bishop | Alessandro Lambert † | Bishop of Aosta, Italy | Bishop of Ivrea, Italy |
| 48.1 | Ordained Bishop | Marcos de Ostos, O. de M. † | Archbishop of Salerno, Italy |
| 34.4 | Ordained Bishop | Gerolamo Ubertino Provana, C.R. † | Bishop of Alba (Pompea), Italy |
| 60.7 | Ordained Bishop | Teofilo Testa, O.F.M. Obs. † | Bishop of Tropea, Italy |