| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Converted | Moise Amberbojan, C.A.M. † | Titular Bishop of Croae |
| 22.9 | Ordained Priest | Giuseppe Aversa † | Priest | Apostolic Nuncio to Germany |
| 22.9 | Ordained Priest | Manuel Azpeitia Palomar † | Priest of Guadalajara, Jalisco, México | Bishop of Tepic, Nayarit, México |
| 16.9 | Professed | Francesco Maria Berti, O.F.M. Conv. † | Member of Order of Friars Minor Conventual | Bishop Emeritus of Amelia, Italy |
| 63.4 | Professed | Bernard Bernard, M.S. † | Priest of Missionaries of Our Lady of La Salette | Prefect Emeritus of Norvegia |
| 51.4 | Resigned | Mariano Santiago Casanova y Casanova † | Vicar General of Valparaíso, Chile | Archbishop of Santiago de Chile |
| Resigned | Matthieu-Paul Chammina (Sciammina) † | Bishop of Zaku (Chaldean), Iraq | Archbishop of Sehna (Chaldean), Iran |
| 17.4 | Professed | Ángel Diego y Carbajal, O.S.A. † | Member of Order of St. Augustine | Vicar Apostolic Emeritus of Changteh [Changde], China |
| Appointed | Salvador Donos Rodríguez † | Vicar General of Valparaíso, Chile |
| Died | Paolo Hatem † | Archbishop of Alep [Beroea, Halab] (Melkite Greek), Syria |
| Resigned | Jerome-Simon Sindjari (Kacha, Tiktik) † | Archbishop of Sehna (Chaldean), Iran | Archbishop Emeritus |
| 23.5 | Ordained Priest | Władysław Paweł Krynicki † | Priest of Włocławek (Kujawy, Kalisze), Poland | Bishop |
| 16.7 | Professed | Bernardo Martínez y Noval, O.S.A. † | Member of Order of St. Augustine | Bishop of Almería, Spain |
| 45.4 | Died | Basilio Nasser † | Bishop of Baalbek (Melkite Greek), Lebanon |
| 35.9 | Appointed | Denis Joseph O’Connell † | Rector of the Pontifical North American College | Bishop Emeritus of Richmond, Virginia, USA |
| 76.3 | Resigned | Francesco Domenico Reynaudi (Raynaud), O.F.M. Cap. † | Vicar Apostolic of Sofia e Plovdiv, Bulgaria | Vicar Apostolic Emeritus |
| Died | Thomas Rokuss † | Titular Archbishop of Bassorah {Basra} (Chaldean), Iraq |
| 2 Jan | | Born | Salvatore Russo † | Catania | Bishop of Acireale, Italy |
| 4 Jan | 39.7 | Ordained Bishop | Giovanni Battista Flapp † | Bishop of Poreč i Pula, Croatia |
| 35.8 | Ordained Bishop | Augusto Eduardo Nunes † | Titular Archbishop of Perge | Archbishop of Évora, Portugal |
| 5 Jan | 72.2 | Died | Andrea Formica † | Bishop of Cuneo, Italy |
| 6 Jan | 86.8 | Died | Józef Alojzy Pukalski † | Bishop of Tarnów, Poland |
| 7 Jan | | Born | Roberto Bernardino Berríos Gaínza, O.F.M. † | Navidad | Bishop Emeritus of San Felipe, Chile |
| 9 Jan | | Born | Henri-Marius Bernard † | Beurières | Bishop of Perpignan-Elne, France |
| 10 Jan | | Born | Jean Elie El-Hage † | Gedaidat-Gazir | Archbishop of Damas (Maronite), Syria |
| 11 Jan | 26.0 | Ordained Priest | Henry William Cleary † | Priest of Ferns, Ireland | Bishop of Auckland, New Zealand |
| 55.0 | Died | Blasius Enciso, O.S.A. † | Bishop-Elect of Linares o Nueva León, Nuevo León, México |
| 66.0 | Died | Krizosztom Károly Kruesz, O.S.B. † | Abbot of Pannonhalma, Hungary |
| 12 Jan | 65.7 | Died | Eligio Pietro Cosi, O.F.M. † | Vicar Apostolic of Shantung {Scian-Ton} (Chan-tong), China |
| 41.6 | Succeeded | Benjamino Geremia, O.F.M. † | Vicar Apostolic of Northern Shantung {Scian-Ton Settentrionale}, China |
| 15 Jan | 83.0 | Died | Kaspar Borowski † | Bishop of Płock, Poland |
| 16 Jan | | Born | Marcel-Auguste-Marie Grandin, C.S.Sp. † | Beaulandais, France | Vicar Apostolic of Bangui, Central African Republic |
| 64.8 | Died | Matthew Quinn † | Bishop of Bathurst, Australia |
| 44.7 | Appointed | Jean-Baptiste-Hippolyte Sarthou, C.M. † | Vicar Apostolic of Southwestern Chi-Li {Ce-Li Meridio-Occidentale}, China | Vicar Apostolic of Northern Chi-Li {Ce-Li Settentrionale} o Pe-Kin, China |
| 44.7 | Appointed | Jean-Baptiste-Hippolyte Sarthou, C.M. † | Titular Bishop of Myriophytos | Vicar Apostolic of Northern Chi-Li {Ce-Li Settentrionale} o Pe-Kin, China |
| 18 Jan | 46.7 | Died | Joseph-Marie Laucaigne, M.E.P. † | Apostolic Administrator of Southern Japan |
| 19 Jan | | Born | Louis-François Gayet, M.S.F.S. † | La Chapelle-Blanche, France | Bishop of Nagpur, India |
| 20 Jan | 77.8 | Died | Giuseppe Rotondo (Rotundo) † | Archbishop of Taranto, Italy |
| 23 Jan | 64.8 | Appointed | Fedele Abbati (Abati), O.F.M. † | Bishop of Chios (Scio), Greece | Bishop Emeritus |
| 55.4 | Appointed | Evangelista Boni, O.F.M. Cap. † | Archbishop of Corfù, Greece |
| 39.3 | Appointed | Peter Bourgade (Bougarde) † | Vicar Apostolic of Arizona, USA | Archbishop of Santa Fe, New Mexico, USA |
| 25 Jan | 59.4 | Ordained Bishop | Arsenio Andrade y Landázuri † | Bishop of Bolivar, Ecuador |
| 60.2 | Ordained Bishop | Tomás Bryan y Livermore † | Bishop of Cartagena (en España) |
| 60.7 | Ordained Bishop | Miguel León y Garrido † | Bishop of Cuenca, Ecuador |
| 38.9 | Ordained Bishop | Camillus Paul Maes † | Bishop of Covington, Kentucky, USA |
| 26 Jan | | Born | Cesar Marie Guerrero † | La Ermita | Bishop Emeritus of San Fernando, Philippines |
| Born | François-Xavier Lacoursière, M. Afr. † | Batiscan, Canada | Bishop Emeritus of Mbarara, Uganda |
| Born | Enrico Petrilli † | Siena | Auxiliary Bishop of Siena, Italy |
| 27 Jan | 40.7 | Appointed | Stephen Reville, O.S.A. † | Coadjutor Bishop of Sandhurst, Australia | Bishop |
| 40.7 | Appointed | Stephen Reville, O.S.A. † | Titular Bishop of Ceramus | Bishop of Sandhurst, Australia |
| 28 Jan | 23.0 | Ordained Priest | Antal Fetser † | Priest of Oradea Mare {Gran Varadino, Nagyvárad}, Romania | Bishop of Győr (Raab), Hungary |
| 29 Jan | 58.8 | Ordained Bishop | John Baptist Butt † | Titular Bishop of Milo | Bishop Emeritus of Southwark, England, Great Britain |
| 30 Jan | | Born | Iuliu Hossu † | Milasul Mare | Bishop of Cluj-Gherla (Romanian), Romania |
| 31 Jan | 47.1 | Selected | Jean-Natalis-François Gonindard † | Bishop of Verdun, France | Archbishop of Rennes (-Dol-Saint-Malo), France |
| 59.7 | Selected | François-Edouard Hasley † | Archbishop of Cambrai, France |
| 43.3 | Selected | Guillaume-Marie-Joseph Labouré † | Bishop of Le Mans, France | Cardinal, Archbishop of Rennes (-Dol-Saint-Malo), France |
| 42.7 | Selected | Fédéric-Henri Oury † | Bishop of Guadeloupe et Basse-Terre, Guadeloupe, Antilles | Archbishop Emeritus of Alger, Algeria |
| 2 Feb | 50.4 | Succeeded | Gaetano Blandini † | Bishop of Agrigento (Girgenti), Italy |
| 70.8 | Died | Domenico Turano † | Bishop of Agrigento (Girgenti), Italy |
| 5 Feb | 56.6 | Selected | Jean-Pierre-Bernard Castillon † | Bishop of Dijon, France |
| 46.5 | Selected | Charles-Evariste-Joseph Coeuret-Varin † | Bishop of Agen, France |
| 53.3 | Selected | Alfred-François Fleury-Hottot † | Bishop of Digne, France | Bishop of Bayonne, France |
| 58.1 | Selected | Louis-Joseph-Marie-Ange Vigne † | Archbishop of Avignon (-Apt, Cavaillon, Carpentras, Orange, e Vaison), France |
| 7 Feb | 39.3 | Appointed | Peter Bourgade (Bougarde) † | Titular Bishop of Thaumacus | Archbishop of Santa Fe, New Mexico, USA |
| 61.1 | Appointed | Dominic Manucy † | Vicar Apostolic of Brownsville, Texas, USA |
| 9 Feb | 45.2 | Professed | Crescente Errázuriz Valdivieso † | Priest of Order of Friars Preachers | Archbishop of Santiago de Chile |
| 10 Feb | 61.1 | Appointed | Dominic Manucy † | Titular Bishop of Maronea | Vicar Apostolic of Brownsville, Texas, USA |
| 11 Feb | 74.9 | Resigned | Corradino Cavriani † | Bishop of Ceneda, Italy | Bishop Emeritus |
| 66.1 | Died | Francesco di Nicola † | Bishop of Ischia, Italy |
| 69.0 | Died | Edward MacCabe † | Cardinal, Archbishop of Dublin, Ireland |
| 39.3 | Succeeded | Gennaro Portanova † | Bishop of Ischia, Italy | Cardinal, Archbishop of Reggio Calabria, Italy |
| 12 Feb | 48.4 | Selected | Sylwester Sembratowicz (Sembratovyc) † | Cardinal, Archbishop of Lviv (Ukrainian), Ukraine |
| 14 Feb | 44.6 | Installed | Jose Maria Ignacio Montes de Oca y Obregón † | Bishop of San Luis Potosí, México |
| 15 Feb | 74.7 | Died | Flavio Chigi † | Cardinal, Archpriest of the Arcibasilica di San Giovanni in Laterano {Saint John Lateran Basilica} |
| 64.8 | Installed | José María Mora y Daza † | Bishop of Tlaxcala, México |
| 66.1 | Selected | Seweryn Tytus Morawski-Dabrowa † | Archbishop of Lviv, Ukraine |
| 17 Feb | 62.6 | Selected | Ernest Maria Müller † | Bishop of Linz, Austria |
| 18 Feb | 80.3 | Died | Domenico Cavallini Spadoni † | Archbishop Emeritus of Spoleto, Italy |
| 19 Feb | | Born | Gregorio Falconieri † | Nardò | Bishop Emeritus of Conversano, Italy |
| 58.8 | Selected | Johannes Christian Roos † | Bishop of Limburg, Germany | Archbishop of Freiburg im Breisgau, Germany |
| 21 Feb | 62.0 | Appointed | José Tomás Mazarrasa y Rivas † | Apostolic Administrator of Ciudad Rodrigo, Spain |
| 62.0 | Appointed | José Tomás Mazarrasa y Rivas † | Titular Bishop of Philippopolis in Thracia | Apostolic Administrator of Ciudad Rodrigo, Spain |
| 49.5 | Appointed | Nicolaus Maria Pagani, S.J. † | Vicar Apostolic of Mangalore, India | Bishop |
| 49.5 | Appointed | Nicolaus Maria Pagani, S.J. † | Titular Bishop of Tricomia | Bishop of Mangalore, India |
| 22 Feb | | Born | George Joseph Finnigan, C.S.C. † | Malone, NY | Bishop of Helena, Montana, USA |
| Born | Ambrogio Squintani † | Pizzighettone | Bishop Emeritus of Ascoli Piceno, Italy |
| 39.7 | Ordained Bishop | Críspulo Uzcátegui † | Archbishop of Caracas, Santiago de Venezuela |
| 25 Feb | | Born | Gustavo Bianchi † | Montepulciano | Bishop of Monopoli, Italy |
| 27 Feb | | Appointed | Moise Amberbojan, C.A.M. † | Titular Bishop of Croae |
| 41.1 | Appointed | Alphonse Joseph Glorieux † | Vicar Apostolic of Idaho, USA | Bishop of Boise City, Idaho, USA |
| 66.6 | Died | Ignazio Paoli, C.P. † | Archbishop of Bucarest {Bucureşti}, Romania |
| 28 Feb | 27.3 | Ordained Priest | Florencio Cerviño y González † | Priest of Tui, Spain | Bishop of Orense, Spain |
| 23.7 | Ordained Priest | Valentín Comellas y Santamaría † | Priest of Solsona, Spain | Bishop |
| 1 Mar | 23.2 | Ordained Priest | Domenico Pozzoni, P.I.M.E. † | Priest of Pontifical Institute for Foreign Missions | Vicar Apostolic of Hong Kong [Xianggang], China |
| 3 Mar | 41.1 | Appointed | Alphonse Joseph Glorieux † | Titular Bishop of Apollonia | Bishop of Boise City, Idaho, USA |
| 4 Mar | 58.0 | Appointed | Raffaele Monaco La Valletta † | Archpriest of the Arcibasilica di San Giovanni in Laterano {Saint John Lateran Basilica} | Cardinal, Prefect of the Congregation of Ceremonies |
| 5 Mar | | Born | José Pereira Alves † | Palmares | Bishop of Niterói (Nictheroy), Brazil |
| 60.2 | Resigned | Placido Petacci † | Bishop of Tivoli, Italy | Bishop Emeritus |
| 10 Mar | 52.8 | Appointed | Francesco Giordani † | Auxiliary Bishop of Albano, Italy | Bishop of Alatri, Italy |
| 11 Mar | 39.4 | Resigned | Donato Velluti Zati di San Clemente † | Bishop of Pistoia e Prato, Italy | Bishop Emeritus of Pescia, Italy |
| 12 Mar | | Born | Alfonso Camillo de Romanis, O.S.A. † | Genazzano, Italy | Titular Bishop of Porphyreon |
| 13 Mar | 23.2 | Ordained Priest | Nicasio Arellano, O.P. † | Priest of Order of Friars Preachers | Vicar Apostolic Emeritus of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 19 Mar | 52.6 | Ordained Bishop | Anthony Durier † | Bishop of Natchitoches, Louisiana, USA |
| 70.1 | Died | Gaetano Ratta † | Auxiliary Bishop of Bologna, Italy |
| 20 Mar | 70.7 | Appointed | Joseph Sadoc Alemany y Conill, O.P. † | Titular Archbishop of Pelusium | Archbishop Emeritus of San Francisco, California, USA |
| Born | Teodoro Pallaroni † | Castel San Giovanni | Bishop of Sarsina, Italy |
| 76.7 | Appointed | Carolus Josephus Testa † | Titular Bishop of Phacusa |
| 21 Mar | | Born | Louis Chiron † | Angles | Bishop of Langres, France |
| 78.7 | Died | Pietro Cilento † | Bishop of Rossano, Italy | Archbishop |
| 23.6 | Ordained Priest | Laurentius Josephus Antonius Hubertus Schrijnen (Schrynen) † | Priest of Roermond, Netherlands | Bishop |
| 24.2 | Ordained Priest | Angelo Simonetti † | Priest of Firenze {Florence}, Italy | Bishop of Pescia, Italy |
| 24.0 | Ordained Priest | Eduardo Solar Vicuña † | Priest of La Serena, Chile | Auxiliary Bishop |
| 23 Mar | 65.4 | Appointed | Eugène Amable Jean Claude Lachat, C.Pp.S. † | Titular Archbishop of Tamiathis | Bishop Emeritus of Basel, Switzerland |
| 65.4 | Appointed | Eugène Amable Jean Claude Lachat, C.Pp.S. † | Apostolic Administrator of Lugano, Switzerland | Bishop Emeritus of Basel, Switzerland |
| 24 Mar | | Appointed | Jacques-Michel Naamo † | Bishop of Seert (Chaldean), Turkey | Archbishop Emeritus |
| 27 Mar | 50.0 | Appointed | Gregorio María Aguirre y García, O.F.M. † | Bishop of Lugo, Spain | Cardinal, Archbishop of Toledo, Spain |
| 48.0 | Appointed | Leandro Arrúe Agudo, O.A.R. † | Bishop of Jaro, Philippines |
| 62.0 | Succeeded | Sigismondo Brandolini Rota † | Bishop of Ceneda, Italy |
| 37.5 | Appointed | Tomás Jenaro de Cámara y Castro, O.S.A. † | Bishop of Salamanca, Spain |
| 58.3 | Appointed | Rafael Sabás Camacho y García † | Bishop of Querétaro, México |
| 54.3 | Appointed | Francisco Xavier Caminero y Muñoz † | Bishop of León, Spain | Bishop-Elect |
| 59.6 | Installed | Gioachino Cantagalli † | Bishop of Faenza, Italy |
| 56.7 | Confirmed | Jean-Pierre-Bernard Castillon † | Bishop of Dijon, France |
| 75.0 | Appointed | Corradino Cavriani † | Titular Archbishop of Adana | Bishop Emeritus of Ceneda, Italy |
| 46.6 | Confirmed | Charles-Evariste-Joseph Coeuret-Varin † | Bishop of Agen, France |
| 47.9 | Appointed | Giovanni Maria Diamare † | Bishop of Lacedonia, Italy | Bishop of Sessa Aurunca, Italy |
| 53.4 | Confirmed | Alfred-François Fleury-Hottot † | Bishop of Digne, France | Bishop of Bayonne, France |
| 47.5 | Appointed | Celestino del Frate † | Bishop of Tivoli, Italy | Archbishop of Camerino, Italy |
| 47.2 | Confirmed | Jean-Natalis-François Gonindard † | Bishop of Verdun, France | Archbishop of Rennes (-Dol-Saint-Malo), France |
| 54.2 | Appointed | Zeferino González y Díaz Tuñón, O.P. † | Archbishop of Toledo, Spain | Cardinal, Archbishop Emeritus of Sevilla {Seville}, Spain |
| 54.2 | Appointed | Zeferino González y Díaz Tuñón, O.P. † | Titular Patriarch of West Indies, Antilles | Cardinal, Archbishop Emeritus of Sevilla {Seville}, Spain |
| 59.9 | Confirmed | François-Edouard Hasley † | Archbishop of Cambrai, France |
| 40.5 | Appointed | Bernardo Herrera Restrepo † | Bishop of Medellín, Colombia | Archbishop of Bogotá, Colombia |
| 43.9 | Appointed | Pietro Alfonso Jorio (Iorio) † | Archbishop of Taranto, Italy | Archbishop Emeritus |
| 43.4 | Confirmed | Guillaume-Marie-Joseph Labouré † | Bishop of Le Mans, France | Cardinal, Archbishop of Rennes (-Dol-Saint-Malo), France |
| 54.4 | Appointed | Narciso Martínez Izquierdo † | Bishop of Madrid, Spain |
| 54.1 | Appointed | Marcello Mazzanti † | Bishop of Pistoia e Prato, Italy |
| 62.1 | Appointed | Giuseppe Tomaso de Mazzarasa † | Titular Bishop of Philippopolis in Arabia |
| 64.3 | Appointed | Bienvenido Monzón y Martín † | Archbishop of Sevilla {Seville}, Spain |
| 66.2 | Confirmed | Seweryn Tytus Morawski-Dabrowa † | Archbishop of Lviv, Ukraine |
| 59.3 | Appointed | José Moreno y Mazón † | Archbishop of Granada, Spain |
| 62.7 | Confirmed | Ernest Maria Müller † | Bishop of Linz, Austria |
| 56.7 | Appointed | Luigi Oreglia di Santo Stefano † | Chamberlain (Camerlengo) of the Apostolic Chamber | Cardinal, Prefect of the Congregation of Ceremonies |
| 42.9 | Confirmed | Fédéric-Henri Oury † | Bishop of Guadeloupe et Basse-Terre, Guadeloupe, Antilles | Archbishop Emeritus of Alger, Algeria |
| 42.2 | Appointed | Julian Pełesz † | Bishop of Ivano-Frankivsk [Stanisławów] (Ukrainian), Ukraine | Bishop of Przemyśl, Sambor, et Sanok (Ruthenian), Poland |
| 60.3 | Appointed | Placido Petacci † | Titular Archbishop of Achrida | Bishop Emeritus of Tivoli, Italy |
| Born | Antonio Picconi † | Verona | Bishop of Vigevano, Italy |
| 58.9 | Confirmed | Johannes Christian Roos † | Bishop of Limburg, Germany | Archbishop of Freiburg im Breisgau, Germany |
| 46.2 | Appointed | Pedro Schumacher, C.M. † | Bishop of Portoviejo (Porto Vecchio), Ecuador |
| 76.0 | Died | Friedrich Johann Joseph Cölestin zu von Schwarzenberg † | Cardinal, Archbishop of Praha {Prague}, Czech Republic |
| 48.6 | Confirmed | Sylwester Sembratowicz (Sembratovyc) † | Cardinal, Archbishop of Lviv (Ukrainian), Ukraine |
| 59.4 | Appointed | Aloysius Traversi † | Bishop of Colle di Val d’Elsa, Italy |
| 31.6 | Appointed | Teodoro Valfrè di Bonzo † | Bishop of Cuneo, Italy | Cardinal, Prefect of the Congregation of the Affairs of Religious |
| 58.3 | Confirmed | Louis-Joseph-Marie-Ange Vigne † | Archbishop of Avignon (-Apt, Cavaillon, Carpentras, Orange, e Vaison), France |
| 39.5 | Appointed | Donato Velluti Zati di San Clemente † | Titular Bishop of Oropus | Bishop Emeritus of Pescia, Italy |
| 63.2 | Appointed | Johann Nepomucenus Zobl † | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 63.2 | Appointed | Johann Nepomucenus Zobl † | Titular Bishop of Evaria | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 29 Mar | 40.9 | Ordained Bishop | Stephen Reville, O.S.A. † | Titular Bishop of Ceramus | Bishop of Sandhurst, Australia |
| 31 Mar | 47.8 | Appointed | William Hickley Gross, C.SS.R. † | Archbishop of Oregon City, Oregon, USA |