| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Charles Berington † | | Vicar Apostolic of Midland District, England, Great Britain |
| 15.9 | Professed | Joaquín Company Soler, O.F.M. Obs. † | Member of Order of Observant Friars Minor | Archbishop of Valencia, Spain |
| Born | Henry Conwell † | | Bishop of Philadelphia, Pennsylvania, USA |
| 15.0 | Professed | Tommaso Maria Francone, C.R. † | Member of Congregation of Clerics Regular | Archbishop of Manfredonia, Italy |
| 22.7 | Ordained Priest | Gaspard-Augustin Laurent de Sainte-Agnès, O.F.M. Conv. † | Priest of Order of Friars Minor Conventual | Archbishop of Tarentaise (Moûtiers-en-Tarentaise), France |
| Appointed | Antonios Mhasseb † | Bishop of Jbeil {Byblos} (Maronite), Lebanon |
| 15.4 | Entered | Porifiriusz Skarbek-Ważyński, O.S.B.M. † | Member of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Chełm and Bełz (Ukrainian), Poland |
| Born | Nicolao Lorenzo Timoni † | | Bishop of Chios (Scio), Greece |
| 1 Jan | 72.6 | Died | Giovanni Giuseppe Falletti † | Archbishop of Cagliari, Italy |
| 7 Jan | 52.2 | Died | Francesco Antonio Cavalcanti, C.R. † | Archbishop of Cosenza, Italy |
| 9 Jan | | Born | [Jean-Baptiste Dumouchel] † | | Bishop Emeritus of [Gard (Constitutional), France] |
| 10 Jan | 47.0 | Confirmed | John O’Brien † | Bishop of Cloyne and Ross, Ireland |
| 51.0 | Confirmed | Richard Walsh † | Bishop of Cork, Ireland |
| 11 Jan | 41.7 | Selected | Miguel de Bulhões e Souza, O.P. † | Coadjutor Bishop of Belém do Pará, Brazil | Bishop of Leiria, Portugal |
| 38.2 | Selected | Gerardo de São José, O.P. † | Bishop of Malacca, Singapore |
| 14 Jan | 51.6 | Ordained Bishop | Pál Štefan Forgách † | Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania | Bishop of Vác, Hungary |
| 20 Jan | 54.6 | Installed | Pedro Felipe de Azúa e Iturgoyen † | Archbishop of Santafé en Nueva Granada, Colombia | Archbishop Emeritus |
| 50.2 | Appointed | Francisco Cuartero Lumbreras † | Bishop of Segorbe, Spain |
| 21 Jan | 54.6 | Installed | Pedro Miguel Argandoña Pastene Salazar † | Bishop of Córdoba (Tucumán), Argentina | Archbishop of La Plata o Charcas, Bolivia |
| 22 Jan | 70.1 | Died | Raimondo Pecchioli, O.P. † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 24 Jan | 78.0 | Died | Joseph-Louis de Cohorn de La Palun † | Bishop of Vaison, France |
| 29 Jan | 56.4 | Appointed | Giovanni Battista Baratta, C.O. † | Bishop of Novara, Italy |
| 36.7 | Appointed | Pasquale Teodoro Basta † | Bishop of Melfi e Rapolla, Italy |
| 52.0 | Confirmed | Jean-Marie de Catelan † | Bishop of Rieux, France |
| 51.6 | Appointed | Ferdinando Mandarini † | Bishop of Oppido Mamertina, Italy |
| 49.0 | Appointed | Benito Marín, O.S.B. † | Bishop of Barbastro, Spain | Bishop of Jaén, Spain |
| 33.8 | Appointed | Domenico Morelli † | Bishop of Strongoli, Italy | Bishop Emeritus |
| 44.5 | Confirmed | Manuel José Rubio y Salinas † | Archbishop of México, Federal District |
| 31 Jan | 43.5 | Died | Józef Antoni Łaszcz † | Coadjutor Bishop of Kyiv and Chernihiv (Kijów and Czernihow), Ukraine |
| Feb | 75.0 | Retired | Gaspard de La Valette de Thomas † | Bishop of Autun, France | Bishop Emeritus |
| 4 Feb | 36.7 | Ordained Bishop | Pasquale Teodoro Basta † | Bishop of Melfi e Rapolla, Italy |
| 33.8 | Ordained Bishop | Domenico Morelli † | Bishop of Strongoli, Italy | Bishop Emeritus |
| 5 Feb | | Born | João António Binet Pincio † | | Bishop Emeritus of Lamego, Portugal |
| 8 Feb | 73.2 | Resigned | Sergio Pola † | Titular Bishop of Famagusta |
| 9 Feb | 73.2 | Died | Sergio Pola † | Bishop Emeritus of Famagusta | Titular Bishop |
| 10 Feb | | Born | Jean-Joseph-Victor de Castellane-Adhémar † | | Bishop of Senez, France |
| 14 Feb | 58.3 | Died | Georges-Lazare Berger de Charancy † | Bishop of Montpellier, France |
| 17 Feb | 71.5 | Resigned | Pietro Agostino Scorza (Scortia) † | Archbishop of Amalfi, Italy | Archbishop Emeritus |
| 18 Feb | 56.4 | Ordained Bishop | Giovanni Battista Baratta, C.O. † | Bishop of Novara, Italy |
| Born | Francisco Javier Mier y Campillo † | | Bishop Emeritus of Almería, Spain |
| 19 Feb | 41.8 | Confirmed | Miguel de Bulhões e Souza, O.P. † | Coadjutor Bishop of Belém do Pará, Brazil | Bishop of Leiria, Portugal |
| 50.3 | Appointed | Nicola Cioffi † | Archbishop of Amalfi, Italy |
| 57.2 | Confirmed | José Alfonso Meléndez, O.F.M. Disc. † | Archbishop of Palermo, Italy |
| 41.5 | Appointed | Giovanni Francesco Mora, C.O. † | Titular Bishop of Famagusta | Bishop of Adria, Italy |
| 38.3 | Confirmed | Gerardo de São José, O.P. † | Bishop of Malacca, Singapore |
| 51.7 | Confirmed | Leopold Maria Joseph von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 20 Feb | 78.9 | Died | Filippo Tipaldi † | Bishop of Ariano, Italy |
| 21 Feb | | Born | Antonio Bergosa y Jordán † | | Archbishop of Tarragona, Spain |
| 77.4 | Died | Raffaele Cosimo de’ Girolami † | Cardinal, Prefect of the Congregation for Indulgences and Relics |
| 24 Feb | | Born | Fortunato Maria Pinchetti † | | Bishop Emeritus of Amelia, Italy |
| 25 Feb | 27.2 | Ordained Deacon | Jerónimo Rogado do Carvalhal e Silva † | Deacon | Bishop of Guarda, Portugal |
| 28 Feb | 61.3 | Selected | Tommaso Ignatius Antonio Sersale, C.R. † | Bishop of Potenza, Italy |
| 29 Feb | | Born | Pierre Magny, M.E.P. † | | Priest of La Société des Missions Etrangères |
| Mar | 64.9 | Selected | Louis-François-Renaud de Villeneuve † | Bishop of Montpellier, France |
| 2 Mar | | Born | Bernardo Maria (Hercules Antonio Vincent) Carenzoni, O.S.B. † | | Bishop of Feltre, Italy |
| 64.6 | Appointed | Carlo Alberto Guidobono Cavalchini † | Prefect of the Congregation of Bishops and Regulars | Cardinal, Datary of the Apostolic Datary |
| 3 Mar | 49.1 | Ordained Bishop | Daniel O’Reilly † | Bishop of Clogher, Ireland |
| 4 Mar | 47.2 | Confirmed | André-Jean-Baptiste-Dominique de Castellane † | Bishop of Glandèves, France |
| 57.7 | Appointed | Matías Escalzo Acedo † | Bishop of Astorga, Spain |
| 49.7 | Died | Juan Antonio Oruña † | Bishop of Osma, Spain |
| 31.7 | Appointed | Philipp Gotthard von Schaffgotsch † | Bishop of Wrocław (Breslau), Poland |
| 6 Mar | 36.4 | Selected | Giulio Cesare Gandolfi † | Archbishop of Cagliari, Italy |
| 7 Mar | | Born | Francesco Chiarchiaro † | | Titular Bishop of Lampsacus |
| 9 Mar | 32.7 | Ordained Deacon | Antoni Wacław Betański † | Deacon | Bishop of Przemyśl, Poland |
| 23.5 | Ordained Deacon | Lothar Breidbach zu Bürresheim, O.S.B. † | Deacon of Order of Saint Benedict | Auxiliary Bishop of Fulda, Germany |
| 27.2 | Ordained Priest | Jerónimo Rogado do Carvalhal e Silva † | Priest | Bishop of Guarda, Portugal |
| 22.1 | Ordained Deacon | Antonius von Herberstein, C.R. † | Deacon of Congregation of Clerics Regular | Bishop of Trieste, Italy |
| 22.9 | Ordained Priest | Teodoro Giacomo Filippo Luvini, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Pesaro, Italy |
| 30.5 | Selected | Lev Sheptytskyi (Szeptycki), O.S.B.M. † | Bishop of Lviv (Ukrainian), Ukraine | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 11 Mar | | Born | Nicola Carelli † | | Bishop of Conversano, Italy |
| 14 Mar | 74.2 | Died | Nicolas de Malezieu † | Bishop of Lavaur, France |
| 15 Mar | | Born | Henri de Chambre d’Urgons † | | Auxiliary Bishop of Metz, France |
| 17 Mar | 41.6 | Ordained Bishop | Giovanni Francesco Mora, C.O. † | Titular Bishop of Famagusta | Bishop of Adria, Italy |
| 24.3 | Ordained Priest | Atanazy Andrzej Szeptycki (Sheptyskyi), O.S.B.M. † | Priest of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Przemyśl, Sambor, et Sanok (Ukrainian), Poland |
| 18 Mar | 52.0 | Selected | Dominique (Wilhelm Philipp) Gentis, O.P. † | Bishop of Antwerpen {Antwerp, Anvers}, Belgium |
| 34.5 | Selected | Antoine de Malvin de Montazet † | Bishop of Autun, France | Archbishop of Lyon, France |
| 19 Mar | 26.1 | Ordained Deacon | Krysztof Hilary Szembek † | Deacon of Poznań, Poland | Bishop of Płock, Poland |
| 24 Mar | 49.1 | Ordained Bishop | Benito Marín, O.S.B. † | Bishop of Barbastro, Spain | Bishop of Jaén, Spain |
| 26.1 | Ordained Priest | Krysztof Hilary Szembek † | Priest of Poznań, Poland | Bishop of Płock, Poland |
| 27 Mar | | Born | Joseph Anton Gall † | | Bishop of Linz, Austria |
| 28 Mar | 90.7 | Died | Domenico Ballati-Nerli, O.S.B. † | Bishop of Colle di Val d’Elsa, Italy |
| 30 Mar | 32.7 | Ordained Priest | Antoni Wacław Betański † | Priest | Bishop of Przemyśl, Poland |
| 22.9 | Ordained Priest | Károly Esterházy de Galántha † | Priest of Esztergom, Hungary | Bishop of Eger, Hungary |
| Born | Jozef Kluch † | | Bishop of Nitra, Slovakia |
| 31 Mar | 28.0 | Ordained Deacon | Giovanni Francesco Albani † | Cardinal-Deacon of San Cesareo in Palatio | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 1 Apr | 60.3 | Appointed | Francisco Díaz Santos y Bullón † | Bishop of Barcelona, Spain | Archbishop of Burgos, Spain |
| 36.5 | Confirmed | Giulio Cesare Gandolfi † | Archbishop of Cagliari, Italy |
| 71.1 | Appointed | Mario Millini (Mellini) † | Cardinal, Cardinal-Priest of San Marcello |
| 61.4 | Confirmed | Tommaso Ignatius Antonio Sersale, C.R. † | Bishop of Potenza, Italy |
| 68.9 | Appointed | Matteo Trigona † | Titular Archbishop of Iconium | Bishop Emeritus of Siracusa, Italy |
| 2 Apr | | Born | Mykhaylo Bradács † | | Auxiliary Bishop of Mukachevo (Munkács) (Ruthenian), Ukraine |
| 50.5 | Died | Gaetano Fraccagnani † | Bishop of Città della Pieve, Italy |
| 42.3 | Selected | Isidoro Sánchez de Luna, O.S.B. † | Bishop of Ariano, Italy | Archbishop Emeritus of Salerno, Italy |
| 7 Apr | 30.2 | Selected | Jean-Baptiste-Joseph de Fontanges † | Bishop of Lavaur, France |
| 71.2 | Died | Basilio Matranga, O.S.B.I. † | Archbishop of Achrida (Ochrida), Bulgaria |
| Born | Carlo Maria Rosini † | | Bishop of Pozzuoli, Italy |
| 61.4 | Ordained Bishop | Tommaso Ignatius Antonio Sersale, C.R. † | Bishop of Potenza, Italy |
| 9 Apr | 32.9 | Selected | Joseph Rolin de Morel de Mons † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 11 Apr | 56.6 | Died | Giovanni Battista Baratta, C.O. † | Bishop of Novara, Italy |
| 12 Apr | 53.4 | Died | Juan Bautista Ferrer y Castro † | Bishop of Lugo, Spain |
| 13 Apr | 22.5 | Ordained Deacon | Ignaz Koller † | Deacon | Bishop of Veszprém, Hungary |
| 17 Apr | | Born | Custodio de Santa Ana d’Almeida, O.A.D. † | | Bishop of São Tomé e Príncipe |
| Born | Leopold Leonhard von Thun † | | Bishop of Passau, Germany |
| 19 Apr | 76.2 | Died | Eugénio Boto da Silva † | Auxiliary Bishop of Braga, Portugal |
| 26 Apr | | Born | Alessandro Malvasia † | | Cardinal, Cardinal-Priest of Santa Croce in Gerusalemme |
| 28 Apr | 66.3 | Died | Juraj Branjug † | Bishop of Zagreb (Agram), Croatia |
| 52.3 | Ordained Bishop | Jean-Marie de Catelan † | Bishop of Rieux, France |
| 25.4 | Ordained Priest | Benedetto Andrea Doria † | Priest | Bishop of Ajaccio, France |
| 24.8 | Ordained Deacon | Tomaz da Encarnação da Costa e Lima, C.R.S.A. † | Deacon of Confederation of Canons Regular of St. Augustine | Bishop of Olinda, Brazil |
| 36.5 | Ordained Bishop | Giulio Cesare Gandolfi † | Archbishop of Cagliari, Italy |
| 51.9 | Ordained Bishop | Leopold Maria Joseph von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 30 Apr | 66.7 | Died | Alessandro degli Abbati † | Bishop of Viterbo e Tuscania, Italy |
| 72.9 | Died | Otto Honorius von Egkh und Hungersbach † | Auxiliary Bishop of Olomouc (Olmütz), Czechia |
| 43.9 | Selected | Francesco Maria Testa † | Bishop of Siracusa, Italy | Archbishop of Monreale, Italy |