| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 56.9 | Died | José Andrés de Achurra y Núñez del Arco † | Bishop of Trujillo, Peru |
| 72.8 | Appointed | Giovanni Francesco Albani † | Archpriest of the Basilica di Santa Maria Maggiore {Saint Mary Major Basilica} | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 58.2 | Ordained Bishop | Miguel Álvarez Cortés † | Bishop of Cartagena, Colombia | Bishop of Quito, Ecuador |
| Born | Timoteo Francis Astorgi † | Constantinople | Bishop of Artuin degli Armeni (Armenian), Turkey |
| 52.8 | Resigned | José Nicolau de Azevedo Coutinho Gentil † | Prelate of Goiás, Brazil | Prelate Emeritus |
| 53.6 | Died | Bartolomeo Criscuolo † | Bishop of Lettere (-Gragnano), Italy |
| 70.0 | Died | Charles de La Cropte de Chanterac † | Bishop of Alet, France |
| 64.3 | Died | Giuseppe Antonio Farao † | Bishop of San Severo, Italy |
| 27.1 | Ordained Priest | Salvador Jiménez y Padilla † | Priest | Bishop of Popayán, Colombia |
| Born | William Kinsella † | | Bishop of Ossory, Ireland |
| 64.1 | Died | Marco de Leone † | Bishop of Satriano e Campagna, Italy |
| 40.0 | Resigned | de Longueville † | Prefect of Iles Saint-Pierre et Miquelon | Prefect Emeritus |
| Died | Gaetano Mantegazza, B. † | Titular Bishop of Maximianopolis in Palaestina |
| Born | Paolo Moise Musa † | Giazzin | Bishop of Tripoli del Libano {Tarabulus} (Maronite) |
| 24.9 | Ordained Priest | Antonio Posada Rubín de Celis † | Priest | Patriarch of West Indies, Spain |
| 79.7 | Died | Isidro Rodríguez Lorenzo, O.S.Bas. † | Archbishop Emeritus of Santo Domingo, Dominican Republic |
| 65.8 | Died | Giuseppe de Rosa † | Bishop of Policastro, Italy |
| Born | Jan Teraszkiewicz † | | Bishop of Bełz (Ruthenian), Poland |
| 52.8 | Died | Gioacchino Vassetta † | Bishop of Castellaneta, Italy |
| 2 Jan | | Born | Balthasar Schitter † | Lintsching | Auxiliary Bishop of Salzburg, Austria |
| 3 Jan | 46.8 | Appointed | John Young † | Coadjutor Bishop of Limerick, Ireland | Bishop |
| 46.8 | Appointed | John Young † | Titular Bishop of Maxula Prates | Bishop of Limerick, Ireland |
| 13 Jan | 55.2 | Ordained Bishop | Henri Reymond † | Bishop | Bishop of Dijon, France |
| 15 Jan | 38.0 | Professed | José Higinio Durán y Martel, O. de M. † | Member of Order of Our Lady of Mercy | Bishop of Panamá |
| 19 Jan | 78.4 | Died | Bernardo Lorca Quiñones, O.S.H. † | Bishop of Guadix, Spain |
| 22 Jan | | Born | Jean-Pierre Losana † | Vigone | Bishop of Biella, Italy |
| 27 Jan | 22.8 | Ordained Priest | Pietro Ignazio Marolda, C.SS.R. † | Priest of Congregation of the Most Holy Redeemer | Bishop of Pozzuoli, Italy |
| 25.4 | Ordained Priest | Giuseppe Novak † | Priest | Archbishop Emeritus of Zadar (Zara), Croatia |
| 28 Jan | 72.1 | Died | Alexandre-César d’Anterroches † | Bishop of Condom, France |
| 31 Jan | | Born | József Lonovics † | Miskolcz | Archbishop of Kalocsa, Hungary |
| 72.7 | Resigned | José Gregorio Alonso de Ortigosa † | Bishop of Antequera, Oaxaca, México | Bishop Emeritus |
| 1 Feb | | Born | Guilherme Henriques de Carvalho † | Coimbra | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 5 Feb | 42.1 | Appointed | Charles La Mothe, M.E.P. † | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam | Vicar Apostolic |
| 42.1 | Appointed | Charles La Mothe, M.E.P. † | Titular Bishop of Castoria | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 7 Feb | 84.9 | Died | Alberto Maria Capobianco, O.P. † | Archbishop Emeritus of Reggio Calabria, Italy |
| 8 Feb | 68.6 | Died | Agustín Rubín Cevallos † | Bishop of Jaén, Spain |
| 15 Feb | | Born | Giovanni Dominico Faustino Ceretti, O.M.V. † | Alice Castello | Vicar Apostolic Emeritus of Ava e Pegù, Myanmar |
| 16 Feb | 71.5 | Died | Joseph-Crispin des Achards de La Baume † | Bishop of Cavaillon, France |
| 18 Feb | 62.6 | Died | Carlo Maurizio Peiretti † | Bishop of Tortona, Italy |
| 23 Feb | 23.0 | Ordained Priest | Jean Arnold Barrett † | Priest of Liège, Belgium | Bishop of Namur {Namen}, Belgium |
| 24.5 | Ordained Priest | Edward Dominic Fenwick, O.P. † | Priest of Order of Friars Preachers | Bishop of Cincinnati, Ohio, USA |
| 25.0 | Ordained Priest | José Caetano da Silva Coutinho † | Priest | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 24 Feb | 53.9 | Ordained Bishop | Gregorio José de Omaña y Sotomayor † | Bishop of Antequera, Oaxaca, México |
| Mar | 53.2 | Died | Etienne-Joseph de Pavée de Villevieille † | Bishop of Bayonne, France |
| 6 Mar | 72.1 | Died | Giovanni Giacomo Onorati † | Bishop of Troia, Italy |
| 10 Mar | 61.2 | Ordained Bishop | Feliciano Alonso, O.P. † | Titular Bishop of Fesseë | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 16 Mar | 23.0 | Ordained Priest | Camillo Alleva † | Priest | Archbishop of Salerno (-Acerno), Italy |
| 23.7 | Ordained Priest | Domenico Armellini † | Priest | Bishop of Terni, Italy |
| Born | Jean-Marie Graveran † | Crozon | Bishop of Quimper [Cornouailles](-Léon), France |
| 25.4 | Ordained Priest | Leonardo Brandão de Sousa, C.O. † | Priest of Confederation of Oratorians of St. Philip Neri | Bishop of Pinhel, Portugal |
| 23.6 | Ordained Priest | Agostino Tommasi † | Priest | Bishop of Aversa, Italy |
| 17 Mar | 67.6 | Died | Antonius Maria Colonna, O.S.B. † | Titular Bishop of Philadelphia in Arabia |
| 46.1 | Ordained Bishop | Giovanni Filippo Gallarati Scotti † | Titular Archbishop of Side | Cardinal, Prefect Emeritus of the Prefecture of the Papal Household |
| 55.9 | Ordained Bishop | Franciscus Xaverius de Vita † | Titular Bishop of Philomelium |
| 19 Mar | 24.5 | Ordained Priest | Pier-Antonio Nostrano † | Priest | Archbishop of Corfù, Greece |
| Born | José Manuel Pasquel Losada † | Lima | Archbishop of Lima, Peru |
| 25 Mar | | Born | Jozef Gaganecz † | Vyshnyj Tvarosch, Slovakia | Bishop of Prešov (Prjašev) (Slovakian), Slovakia |
| 26 Mar | 58.4 | Appointed | Giuseppe Bertieri, O.A.D. † | Bishop of Pavia, Italy |
| 76.4 | Died | Francesco Carrara † | Cardinal, Cardinal-Priest of San Silvestro in Capite |
| 87.4 | Died | Joseph Ferdinand Guidobald von Spaur und Valör † | Titular Bishop of Abila in Palaestina |
| 30 Mar | 22.7 | Ordained Deacon | Francesco Stracchini † | Deacon | Bishop of Segni, Italy |
| 23.1 | Ordained Priest | Guillaume-Aubin de Villèle † | Priest | Archbishop of Bourges, France |
| 31 Mar | 70.1 | Died | Francesco Ferdinando Sanseverino, C.P.O. † | Archbishop of Palermo, Italy |
| 7 Apr | 65.3 | Ordained Bishop | Manel María Trujillo Jurado, O.F.M. † | Bishop of Albarracin, Spain | Bishop Emeritus |
| 14 Apr | 85.6 | Died | Anton Peter Przichowsky von Przichowitz † | Archbishop of Praha {Prague}, Czech Republic |
| 17 Apr | 69.1 | Died | Philippe Damien de Hoensbroeck † | Bishop of Roermond, Netherlands |
| 19 Apr | 69.7 | Appointed | Esteban Lorenzo de Tristán y Esmenota † | Bishop of Guadalajara, Jalisco, México |
| 21 Apr | 57.4 | Ordained Bishop | Cándido Manuel de Torrijos Riguerra, O.P. † | Bishop of Mérida, Venezuela |
| 22 Apr | 64.3 | Died | Joseph VI Estephan † | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| Born | György Girk † | Baja | Bishop of Pécs, Hungary |
| 25 Apr | 23.0 | Ordained Priest | Pierre-Joseph Rey † | Priest of Genève {Geneva}, Switzerland | Bishop of Annecy, France |
| 23.1 | Professed | Grzegorz Tomasz Ziegler, O.S.B. † | Member of Order of Saint Benedict | Bishop of Linz, Austria |
| 28 Apr | 24.1 | Ordained Priest | Julius Benzo † | Priest | Auxiliary Bishop of Mazara del Vallo, Italy |
| 1 May | 48.0 | Selected | Wilhelm Florentin von Salm-Salm † | Archbishop of Praha {Prague}, Czech Republic |
| 6 May | 14.4 | Professed | Antonio Francesco Orioli, O.F.M. Conv. † | Member of Order of Friars Minor Conventual | Cardinal, Prefect of the Congregation of Bishops and Regulars |
| 12 May | 26.4 | Ordained Bishop | Antoine Casimir Libère de Stockem † | Titular Bishop of Canopus | Auxiliary Bishop of Liège, Belgium |
| 17 May | | Appointed | Charles O’Reilly † | Coadjutor Bishop of Kilmore, Ireland | Bishop |
| Appointed | Charles O’Reilly † | Titular Bishop of Fussala | Bishop of Kilmore, Ireland |
| 19 May | 73.6 | Died | Gioacchino Michele Radicati, O.P. † | Bishop of Alghero, Italy |
| 20 May | 47.2 | Ordained Bishop | John Young † | Titular Bishop of Maxula Prates | Bishop of Limerick, Ireland |
| 25 May | 23.0 | Ordained Priest | Francesco Alberini † | Priest | Bishop of Terracina, Priverno e Sezze, Italy |
| 24.3 | Ordained Priest | Michael Angelo Buono † | Priest | Titular Bishop of Derbe |
| 25.4 | Ordained Priest | Luiz de Castro Pereira, C.S.J. † | Priest | Prelate of Cuiabá, Brazil |
| 23.3 | Ordained Priest | Carlo Cavalieri Manassi † | Priest | Bishop of Terracina, Priverno e Sezze, Italy |
| 22.8 | Ordained Priest | Emmanuele Lodi, O.P. † | Priest of Order of Friars Preachers | Bishop of Udine, Italy |
| 24.1 | Ordained Priest | Carlo Oppizzoni (Opizoni) † | Priest of Milano {Milan}, Italy | Cardinal, Archbishop Emeritus of Bologna, Italy |
| 23.0 | Ordained Priest | Ferdinando Maria Pignatelli, C.R. † | Priest of Congregation of Clerics Regular | Cardinal, Archbishop of Palermo, Italy |
| 24.3 | Ordained Priest | Joachin (Gioacchino Domenico) Salvetti, O.F.M. † | Priest of Order of Friars Minor | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 22.9 | Ordained Priest | Francesco Stracchini † | Priest | Bishop of Segni, Italy |
| 23.2 | Ordained Priest | Grzegorz Tomasz Ziegler, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Linz, Austria |
| 31 May | 55.8 | Died | Victorius (Franciscus Xaverius) Schweizer, O.C.D. † | Titular Bishop of Gabala |
| Born | Ladislav Záboyský † | Eperjes | Bishop of Spiš, Slovakia |
| 5 Jun | 40.6 | Resigned | Giovanni Martino Bernardoni Baccolo † | Bishop of Kotor (Cattaro), Montenegro | Titular Bishop of Famagusta |
| 6 Jun | 76.1 | Died | João Rafael de Mendonça, O.S.H. † | Bishop of Porto, Portugal |
| 7 Jun | 73.3 | Died | Vitaliano Borromeo † | Cardinal, Titular Archbishop of Thebae |
| 15 Jun | 64.0 | Died | Antoni Onufry Okecki † | Bishop of Poznań, Poland |
| 17 Jun | 65.0 | Appointed | Juan Francisco Armada Araujo † | Bishop of Huesca, Spain |
| 48.5 | Appointed | Manuel Joaquim Da Silva † | Titular Archbishop of Hadrianopolis in Haemimonto |
| 34.6 | Appointed | António Luís da Veiga Cabral e Câmara † | Bishop of Bragança e Miranda, Portugal |
| 65.1 | Appointed | Filippo López y Rojo, C.R. † | Archbishop of Palermo, Italy | Archbishop Emeritus |
| 65.1 | Appointed | Filippo López y Rojo, C.R. † | Archbishop of Monreale, Italy | Archbishop Emeritus of Palermo, Italy |
| 64.9 | Appointed | Pasquale Petruccelli † | Bishop of Strongoli, Italy |
| 52.5 | Appointed | Carlo Rovelli, O.P. † | Bishop of Como, Italy | Bishop Emeritus |
| 50.5 | Appointed | Francesco Giovanni Scutellari Ajani † | Titular Bishop of Ioppe |
| 41.4 | Appointed | Fabrizio Selvi † | Bishop of Grosseto, Italy | Bishop Emeritus |
| 71.1 | Appointed | Agustín Vázquez Varela, O. Cist. † | Bishop of Solsona, Spain |
| 75.8 | Appointed | Francesco Saverio de Zelada † | Cardinal-Priest of Santa Prassede | Cardinal, Archivist of the Vatican Secret Archives |
| 18 Jun | 40.6 | Appointed | Giovanni Martino Bernardoni Baccolo † | Titular Bishop of Hippo Diarrhytus | Titular Bishop of Famagusta |
| Born | Piotr Pawel Beniamin Szymański, O.F.M. Cap. † | Varsavia | Bishop of Janów Podlaski (Podlaska o Janów), Poland |
| 23 Jun | 64.9 | Ordained Bishop | Pasquale Petruccelli † | Bishop of Strongoli, Italy |
| 52.5 | Ordained Bishop | Carlo Rovelli, O.P. † | Bishop of Como, Italy | Bishop Emeritus |
| 41.4 | Ordained Bishop | Fabrizio Selvi † | Bishop of Grosseto, Italy | Bishop Emeritus |
| 24 Jun | 50.5 | Ordained Bishop | Francesco Giovanni Scutellari Ajani † | Titular Bishop of Ioppe |
| 29 Jun | | Born | Pedro Espinosa y Dávalos † | Tepic | Archbishop of Guadalajara, Jalisco, México |