| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Ignazio Akkani † | Acri | Archbishop of Hauran (Melkite Greek), Syria |
| 90.6 | Died | Fabijan Blasković † | Bishop of Makarska, Croatia |
| 58.1 | Ordained Bishop | Fernando Cano Almirante, O.F.M. † | Bishop of Antioquía, Colombia | Bishop of Islas Canarias {Canary Islands}, Spain |
| Born | Nicholas Conaty † | Kilmore | Bishop of Kilmore, Ireland |
| 23.7 | Ordained Priest | Giovanni Corti † | Priest | Bishop of Mantova, Italy |
| Born | Peter Francis Crinnon † | Cullen, Ireland | Bishop of Hamilton, Ontario, Canada |
| 37.0 | Professed | Alfonso-Maria di Donato, O.F.M. † | Member of Order of Friars Minor | Vicar Apostolic of Scen-Si (Chen-si, Shensi), China |
| Born | John Kilduff † | | Bishop of Ardagh (and Clonmacnois), Ireland |
| Born | Neale MacCabe, C.M. † | | Bishop of Ardagh (and Clonmacnois), Ireland |
| 80.9 | Died | Gavino Murro † | Archbishop of Sassari, Italy |
| 45.7 | Ordained Bishop | Manuel Isidoro Pérez Sánchez † | Bishop of Antequera, Oaxaca, México | Bishop Emeritus |
| 20.2 | Professed | Giovanni Domenico Rizzolati, O.F.M. † | Member of Order of Friars Minor | Vicar Apostolic of Houkouang, China |
| 1 Jan | 27.2 | Ordained Priest | Pietro Vargiù † | Priest | Bishop of Ales e Terralba, Italy |
| 5 Jan | | Born | Henri Monnier † | Nivelles | Auxiliary Bishop of Cambrai, France |
| 64.7 | Installed | Pierre-Marin Rouph de Varicourt † | Bishop of Orléans, France |
| 7 Jan | | Born | Giovanni Kupelian † | Diarbekir | Titular Archbishop of Attalea in Pamphylia |
| 8 Jan | | Born | Ambroise Abdo (Abdou) † | Alep | Patriarchal Vicar of Jerusalem {Gerusalemme} (Melkite Greek), Palestine |
| 9 Jan | 46.3 | Ordained Bishop | Gustave-Maximilien-Juste de Croÿ-Solre † | Bishop of Strasbourg, France | Cardinal, Archbishop of Rouen, France |
| 15 Jan | | Born | Cyriaque-Georges Goga † | Telkef | Bishop Emeritus of Amadiyah (Chaldean), Iraq |
| 16 Jan | 57.8 | Ordained Bishop | Isidoro Domínguez, C.R.M. † | Archbishop of Santafé en Nueva Granada, Colombia |
| 19 Jan | 67.1 | Died | Vincenzo Maria Maggioli, O.P. † | Bishop of Savona, Italy |
| 43.5 | Selected | Pasquale de Nicolais † | Bishop of Nusco, Italy |
| 20 Jan | | Born | Sebastião Dias Laranjeira † | Monte Alto | Bishop of São Pedro do Rio Grande do Sul, Brazil |
| 21 Jan | | Born | Louis-Gabriel Delaplace, C.M. † | Auxerre, France | Vicar Apostolic of Northern Chi-Li {Ce-Li Settentrionale} o Pe-Kin, China |
| 69.3 | Appointed | Ignazio Nasalli-Ratti † | Apostolic Nuncio to Switzerland | Cardinal, Official of the Roman Curia - Other |
| 24 Jan | 60.5 | Died | Diego Innico Caracciolo di Martina † | Cardinal, Bishop of Palestrina, Italy |
| 27 Jan | 72.3 | Died | Francsco Antonio Javier de Gardoqui Arriquíbar † | Cardinal, Priest of Palencia, Spain |
| 30 Jan | 55.4 | Ordained Bishop | Bernhard Galura † | Titular Bishop of Anthedon | Bishop of Brixen {Bressanone}, Italy |
| 32.8 | Ordained Bishop | Youssef Hobaish (Habaisci) † | Bishop of Tripoli del Libano {Tarabulus} (Maronite) | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| 31 Jan | | Born | Remiglo Pacini † | Colle di Val d'Elsa | Bishop of Livorno, Italy |
| 1 Feb | 42.6 | Appointed | Jean-Jacques Lartigue, P.S.S. † | Auxiliary Bishop of Québec, Canada | Bishop of Montréal, Québec, Canada |
| 42.6 | Appointed | Jean-Jacques Lartigue, P.S.S. † | Titular Bishop of Telmissus | Bishop of Montréal, Québec, Canada |
| Appointed | Hugo O’Kelly † | Bishop of Dromore, Ireland |
| 33.0 | Appointed | Joseph Norbert Provencher † | Auxiliary Bishop of Québec, Canada | Bishop of Saint-Boniface, Manitoba, Canada |
| 33.0 | Appointed | Joseph Norbert Provencher † | Titular Bishop of Iuliopolis | Bishop of Saint-Boniface, Manitoba, Canada |
| 2 Feb | 71.9 | Selected | Nicola Carelli † | Bishop of Conversano, Italy |
| 34.8 | Selected | Filippo Giudice Caracciolo, C.O. † | Bishop of Molfetta, Italy | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 3 Feb | | Born | Luigi Trombetta † | Città Lavinia, Italy | Cardinal, Secretary of the Congregation of Bishops and Regulars |
| 6 Feb | 62.2 | Ordained Bishop | Pietro Carlo Ciani † | Bishop of Concordia (Sagittaria), Italy |
| 10 Feb | 86.0 | Died | Francisco Antonio Cebrián y Valdá † | Cardinal, Patriarch of West Indies, Spain |
| 11 Feb | | Born | Luigi Matera † | Roma | Apostolic Delegate to Argentina |
| 12 Feb | | Born | Giuseppe Antonio Virdia, O.F.M. Conv. † | Verapodio | Bishop Emeritus of Cariati, Italy |
| 13 Feb | 24.1 | Ordained Priest | Jakob Laurentz Studach † | Priest of Eichstätt, Germany | Vicar Apostolic of Sweden |
| 17 Feb | 76.0 | Died | Joseph-Jacques Loison † | Bishop of Bayonne, France |
| Born | Elzéar-Alexandre Taschereau † | Sainte-Marie de la Beauce | Cardinal, Archbishop of Québec, Canada |
| 19 Feb | | Born | Peregrini Tofoni † | Grottazzolina | Bishop of Assisi, Italy |
| 20 Feb | 82.3 | Died | Henri Reymond † | Bishop of Dijon, France |
| 59.9 | Died | Youssef Tian (Tyen) † | Patriarch Emeritus of Antiochia {Antioch} (Maronite), Lebanon |
| 21 Feb | 61.4 | Confirmed | Bernardino D’Avolio, O.F.M. Cap. † | Bishop of Trivento, Italy |
| 49.9 | Appointed | Antonio Baldini † | Titular Archbishop of Neocaesarea in Ponto |
| 58.6 | Confirmed | Giuseppe Maria Botticelli, O.F.M. † | Bishop of Potenza e Marsico Nuovo, Italy | Bishop of Lacedonia, Italy |
| 71.9 | Confirmed | Nicola Carelli † | Bishop of Conversano, Italy |
| 50.0 | Appointed | Carlo Cavalieri Manassi † | Bishop of Terracina, Priverno e Sezze, Italy |
| 47.3 | Confirmed | Paul-Thérèse-David d’Astros † | Bishop of Saint-Flour, France | Cardinal, Archbishop of Toulouse (-Narbonne), France |
| 45.1 | Appointed | Geronimo do Barco, O.F.M. † | Bishop of Santiago de Cabo Verde | Bishop Emeritus |
| 34.4 | Appointed | Nicolò Gatto † | Titular Bishop of Titiopolis | Bishop of Patti, Italy |
| 75.8 | Appointed | Bonaventura (Domenico Giuseppe) Gazzola, O.F.M. † | Cardinal, Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 34.9 | Confirmed | Filippo Giudice Caracciolo, C.O. † | Bishop of Molfetta, Italy | Cardinal, Archbishop of Napoli {Naples}, Italy |
| Appointed | Juan Nepomuceno Gómez Durán † | Bishop of Santander, Spain | Bishop of Málaga, Spain |
| 64.5 | Confirmed | Claude-Madeleine de La Myre-Mory † | Bishop of Le Mans, France | Bishop Emeritus |
| 74.4 | Confirmed | Charles Mannay † | Bishop of Rennes, France |
| 60.3 | Appointed | Giuseppe Crispino Mazzotti † | Bishop of Cervia, Italy |
| 64.1 | Appointed | Joaquim José de Miranda Coutinho † | Bishop of Castelo Branco, Portugal |
| 43.6 | Confirmed | Pasquale de Nicolais † | Bishop of Nusco, Italy |
| 75.4 | Resigned | Fabrizio Dionigi Ruffo † | Chamberlain (Camerlengo) of the College of Cardinals | Cardinal, Chamberlain Emeritus |
| 63.4 | Confirmed | Patrício da Silva, O.S.A. † | Archbishop of Évora, Portugal | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 63.9 | Appointed | Giuseppe Maria Spina † | Cardinal-Bishop of Palestrina | Cardinal, Archbishop Emeritus of Genova, Italy |
| 39.5 | Confirmed | Ignác Szepesy de Négyes † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania | Bishop of Pécs, Hungary |
| 65.0 | Confirmed | Kajetan Augustyn Warteresiewicz † | Archbishop of Lviv (Armenian), Ukraine |
| 25 Feb | 58.6 | Ordained Bishop | Giuseppe Maria Botticelli, O.F.M. † | Bishop of Potenza e Marsico Nuovo, Italy | Bishop of Lacedonia, Italy |
| 43.1 | Selected | Ignatius Petrus Jarweh (Jaroue) † | Patriarch of Antiochia {Antioch} (Syrian), Lebanon |
| 43.1 | Selected | Ignatius Petrus Jarweh (Jaroue) † | Bishop of Beirut {Bairut} (Syrian), Lebanon | Patriarch of Antiochia {Antioch} (Syrian), Lebanon |
| 64.1 | Ordained Bishop | Ranald MacDonald † | Titular Bishop of Arindela | Vicar Apostolic of Western District, Scotland, Great Britain |
| 26 Feb | 24.0 | Ordained Priest | Charles-Thomas Thibault † | Priest | Bishop of Montpellier, France |
| 27 Feb | 61.4 | Ordained Bishop | Bernardino D’Avolio, O.F.M. Cap. † | Bishop of Trivento, Italy |
| 50.0 | Ordained Bishop | Antonio Baldini † | Titular Archbishop of Neocaesarea in Ponto |
| 50.0 | Ordained Bishop | Carlo Cavalieri Manassi † | Bishop of Terracina, Priverno e Sezze, Italy |
| 34.9 | Ordained Bishop | Filippo Giudice Caracciolo, C.O. † | Bishop of Molfetta, Italy | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 43.6 | Ordained Bishop | Pasquale de Nicolais † | Bishop of Nusco, Italy |
| 4 Mar | 47.4 | Selected | Paul-Thérèse-David d’Astros † | Bishop of Bayonne, France | Cardinal, Archbishop of Toulouse (-Narbonne), France |
| 65.5 | Selected | Jean-Baptiste Dubois † | Bishop of Dijon, France |
| 5 Mar | 52.0 | Ordained Bishop | Józef Marcelin Dzięcielski † | Titular Bishop of Arathia | Bishop of Lublin, Poland |
| 6 Mar | 69.4 | Selected | Louis-Siffrein-Joseph de Salamon † | Bishop of Saint-Flour, France |
| 8 Mar | 71.3 | Died | Jan Klemens Gołaszewski † | Bishop of Sejny o Sejna o Augustów, Poland |
| 12 Mar | 69.7 | Died | Ernst Maria Ferdinand von Bissingen-Nieppenburg † | Auxiliary Bishop Emeritus of Konstanz {Constance}, Germany |
| Born | Eliseo Giordano, O. Carm. † | Sassari | Bishop of Alghero, Italy |
| 18 Mar | 31.0 | Ordained Priest | António Bernardo da Fonseca Monís † | Priest | Bishop of Porto, Portugal |
| 23.5 | Ordained Priest | Gennaro di Giacomo † | Priest | Bishop of Alife, Italy |
| 23.5 | Ordained Priest | Pierluigui Pera † | Priest | Archbishop of Lucca, Italy |
| 19 Mar | 64.7 | Ordained Bishop | Prosper Burzyński, O.F.M. † | Bishop of Sandomierz, Poland |
| Born | José María Gelabert y Crespo † | Santa Fe | Bishop of Paraná, Argentina |
| 64.6 | Ordained Bishop | Claude-Madeleine de La Myre-Mory † | Bishop of Le Mans, France | Bishop Emeritus |
| 20 Mar | 69.8 | Died | Etienne-Jean-Baptiste des Galois de la Tour † | Archbishop of Bourges, France |
| 26 Mar | | Born | Frédéric-François-Xavier Ghislain de Mérode † | Mechlin, Belgium | Titular Archbishop of Melitene |
| 31 Mar | | Born | Fedele Abbati (Abati), O.F.M. † | Modena | Bishop Emeritus of Chios (Scio), Greece |
| 2 Apr | 72.1 | Ordained Bishop | Nicola Carelli † | Bishop of Conversano, Italy |
| 3 Apr | | Born | Matthew Quinn † | Eadestown, Ireland | Bishop of Bathurst, Australia |
| 6 Apr | 23.6 | Ordained Deacon | Vasyl Popovics † | Deacon | Bishop of Mukachevo (Munkács) (Ruthenian), Ukraine |
| 9 Apr | 57.8 | Ordained Bishop | José da Santíssima Trindade Leite, O.F.M. † | Bishop of Mariana, Brazil |
| 39.7 | Ordained Bishop | Ignác Szepesy de Négyes † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania | Bishop of Pécs, Hungary |
| 10 Apr | 23.6 | Ordained Priest | Vasyl Popovics † | Priest | Bishop of Mukachevo (Munkács) (Ruthenian), Ukraine |
| 16 Apr | | Born | José María Mora y Daza † | Jalapa | Bishop of Tlaxcala, México |
| 64.5 | Ordained Bishop | Joaquim de Sant’Ana Carvalho † | Bishop of Faro {Algarve}, Portugal | Bishop Emeritus |
| 23.5 | Ordained Deacon | Rafael Salinas † | Deacon | Bishop of Cochabamba, Bolivia |
| 17 Apr | | Born | Aloyse Kobès, C.S.Sp. † | Fessenheim, France | Vicar Apostolic of Senegambia, Senegal |
| 20 Apr | 76.2 | Died | Alessandro Mattei † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 33.3 | Confirmed | Agapios Riachi (Riecji) † | Archbishop of Beirut and Jbeil {Bairut e Gibail} (Melkite Greek), Lebanon |
| 23 Apr | 54.1 | Ordained Bishop | Alexander Dobrzański † | Titular Bishop of Leontopolis in Bithynia | Auxiliary Bishop of Sandomierz, Poland |
| 23.5 | Ordained Priest | Rafael Salinas † | Priest | Bishop of Cochabamba, Bolivia |
| 25 Apr | 64.3 | Installed | Joaquim José de Miranda Coutinho † | Bishop of Castelo Branco, Portugal |
| 30 Apr | 63.6 | Ordained Bishop | Patrício da Silva, O.S.A. † | Archbishop of Évora, Portugal | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 1 May | 64.2 | Died | Lorenzo Litta † | Cardinal, Official of the Roman Curia - Other |
| 2 May | 50.1 | Appointed | Pierre-Alexandre Coupperie † | Bishop of Baghdad, Iraq |
| 6 May | 49.5 | Appointed | Pietro Francesco Galleffi † | Archpriest of the Basilica di San Pietro in Vaticano {Saint Peter Basilica} | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 61.4 | Appointed | Emmanuele de Gregorio † | Prefect of the Congregation of the Council | Cardinal, Secretary of the Roman Curia - Other |
| Born | Nicola de Simone † | Mesoraca | Bishop of Bova, Italy |
| 9 May | 59.7 | Appointed | Annibale Francesco Clemente Melchiore Girolamo Nicola della Genga † | Prefect of the Roman Curia - Other | Pope (Roma {Rome}, Italy) |
| 71.8 | Resigned | Giulio Gabrielli † | Prefect of the Congregation of the Council | Cardinal, Prefect Emeritus |
| 10 May | 86.6 | Appointed | Giovanni Battista Quarantotti † | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 13 May | 66.4 | Died | Marco Negri † | Bishop of Sapë, Albania |
| 17 May | | Born | Clément Mikaelian † | Marasc | Bishop of Marasc (Armenian), Turkey |
| 18 May | | Born | Ioan Vancea (Vancsa) † | Vassad | Archbishop of Făgăraş şi Alba Iulia (Romanian), Romania |
| 20 May | 77.7 | Resigned | José Joaquim da Cunha Azeredo Coutinho † | Bishop of Elvas, Portugal | Bishop Emeritus |
| 21 May | 39.9 | Ordained Bishop | Giacomo Luigi Fontana, M.E.P. † | Titular Bishop of Sinitis | Vicar Apostolic of Houkouang, China |
| 34.7 | Ordained Bishop | Nicolò Gatto † | Titular Bishop of Titiopolis | Bishop of Patti, Italy |
| 23 May | 47.6 | Selected | Ján Krstitel Ladislav Pyrker (Pryker), O. Cist. † | Patriarch of Venezia {Venice}, Italy | Archbishop of Eger, Hungary |
| 27 May | 23.5 | Ordained Deacon | Karl Arnold-Obrist † | Deacon of Basel, Switzerland | Bishop |
| 30.3 | Ordained Priest | Patrick Durcan † | Priest | Bishop of Achonry, Ireland |
| 24.4 | Ordained Priest | François-Nicholas-Madeleine Morlot † | Priest | Cardinal, Archbishop of Paris, France |
| 28 May | 73.6 | Died | Bernardo Maria della Torre † | Bishop of Castellammare di Stabia, Italy |
| Born | Emmanuele Kaubeck † | Macarscka | Bishop of Adria, Italy |
| Born | William Lanigan † | Lisdaleen, Ireland | Bishop of Goulburn, Australia |
| 29 May | 58.4 | Confirmed | Manuel Nicolau de Almeida, O.C.D. † | Bishop of Angra, Portugal |
| 63.5 | Appointed | Tommaso Arezzo † | Cardinal-Bishop of Santa Sabina | Cardinal, Official of the Roman Curia - Other |
| 64.8 | Appointed | Cesare Brancadoro † | Cardinal-Priest of Sant’Agostino | Cardinal, Archbishop of Fermo, Italy |
| 59.9 | Appointed | Santiago Creus y Martí † | Archbishop of Tarragona, Spain |
| 67.0 | Appointed | Ignacy Stanislaw Czyżewski † | Bishop of Sejny o Sejna o Augustów, Poland |
| 47.6 | Confirmed | Paul-Thérèse-David d’Astros † | Bishop of Bayonne, France | Cardinal, Archbishop of Toulouse (-Narbonne), France |
| 75.8 | Appointed | Giulio Maria della Somaglia † | Cardinal-Bishop of Ostia (e Velletri) | Cardinal, Archivist of the Vatican Secret Archives |
| 73.4 | Appointed | Michele Di Pietro † | Cardinal-Bishop of Porto e Santa Rufina | Cardinal, Major Penitentiary of the Apostolic Penitentiary |
| 65.8 | Confirmed | Jean-Baptiste Dubois † | Bishop of Dijon, France |
| 55.3 | Appointed | Francisco Ferreira de Azevedo † | Prelate of Goiás, Brazil | Bishop of Goiás, Brazil |
| 55.3 | Appointed | Francisco Ferreira de Azevedo † | Titular Bishop of Castoria | Bishop of Goiás, Brazil |
| 49.6 | Appointed | Pietro Francesco Galleffi † | Cardinal-Bishop of Albano | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 73.0 | Appointed | Viktor Franz Anton von Glutz-Ruchti † | Coadjutor Bishop of Basel, Switzerland |
| 73.0 | Appointed | Viktor Franz Anton von Glutz-Ruchti † | Titular Bishop of Chersonesus in Creta | Coadjutor Bishop of Basel, Switzerland |
| 56.7 | Appointed | Francisco Alexandre Lobo, O.S.B. † | Bishop of Viseu, Portugal |
| 67.4 | Died | de Longueville † | Prefect Emeritus of Iles Saint-Pierre et Miquelon |
| 54.7 | Appointed | Joaquim de Meneses e Ataide, O.S.A. † | Bishop of Elvas, Portugal |
| 69.6 | Confirmed | Louis-Siffrein-Joseph de Salamon † | Bishop of Saint-Flour, France |
| 44.8 | Appointed | Annibale Tommasi † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 1 Jun | | Born | Domenico Pietromarchi † | Velletri | Bishop of Anagni, Italy |
| 2 Jun | 63.0 | Selected | Giambattista Castelnuovo † | Bishop of Como, Italy |
| Born | John Farrell † | Armagh, Ireland | Bishop of Hamilton, Ontario, Canada |
| 64.4 | Selected | Pietro Mola † | Bishop of Bergamo, Italy |
| 54.3 | Selected | Carlo Pio Ravasi, O.S.B. † | Bishop of Adria, Italy |
| 4 Jun | 47.0 | Ordained Bishop | Józef Szczepan Koźmian † | Titular Bishop of Carystus | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 8 Jun | 67.4 | Selected | Gregory Joseph Viegas, T.O.R. † | Bishop of Olinda, Brazil | Bishop-Elect |
| 11 Jun | 44.8 | Ordained Bishop | Annibale Tommasi † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 22 Jun | | Ordained Bishop | Abraham Candil † | Titular Bishop of Doliche | Archbishop of Mardin (Armenian), Iraq |
| 24 Jun | 53.0 | Selected | Giuseppe Vincenzo Airenti, O.P. † | Bishop of Savona, Italy | Archbishop of Genova, Italy |
| 45.7 | Selected | Carmelo Cordiviola † | Bishop of Albenga, Italy |
| 31.2 | Selected | Luigi Fransoni † | Bishop of Fossano, Italy | Archbishop of Torino {Turin}, Italy |
| 66.6 | Selected | Felice Levreri (Levrieri) † | Bishop of Ventimiglia, Italy |
| Born | Giovanni Battista Nogáll † | Györ | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 65.5 | Selected | Pietro Luigi Scarabelli, C.M. † | Bishop of Luni, Sarzana e Brugnato, Italy | Bishop Emeritus |
| 26 Jun | | Born | Pietro Giovanni Aponte † | Quiquio | Bishop of Paraguay |
| 30 Jun | 90.2 | Died | Sigismund Anton von Hohenwart, S.J. † | Archbishop of Wien {Vienna}, Austria |