| Date | Age | Event | Bishop | Title | Current Title | 
|---|
| unknown | 43.0 | Appointed | Joseph VI Audu † | Bishop of Amadiyah (Chaldean), Iraq | Patriarch of Babylon {Babilonia} (Chaldean), Iraq | 
| 22.0 | Professed | Richard Placid Burchall, O.S.B. † | Member of Order of Saint Benedict | President | 
| 28.7 | Professed | João da França Castro e Moura, C.M. † | Priest of Congregation of the Mission | Bishop of Porto, Portugal | 
|  | Born | Domingo Benigno Cruz (y Quintanilla) † |  | Priest of Concepción, Chile | 
|  | Ordained Bishop | Gregoire Emmanuel (Karme) † | Archbishop of Mossul (Syrian), Iraq | 
| 61.9 | Died | Antonio José Ferreira de Sousa † | Auxiliary Bishop of Lisboa {Lisbon}, Portugal | 
| 73.7 | Died | Giuseppe Stanislao Gentili † | Bishop of Colle di Val d’Elsa, Italy | 
| 69.8 | Ceased | Pietro Angelo Luigi Pacifico Grati, O.S.M. † | Apostolic Administrator of Terracina, Priverno e Sezze, Italy | Titular Bishop of Callinicum | 
| 68.3 | Died | Lev (Leon) Javorskyj (Jaworowski), O.S.B.M. † | Auxiliary Bishop of Žyrovyci (Ukrainian), Lithuania | 
| 28.1 | Ordained Priest | Carlos Manuel Ladrón de Guevara † | Priest | Bishop of Chiapas (Ciudad Real de Chiapas), México | 
| 56.6 | Appointed | Luigi Emmanuele Nicolo Lambruschini, B. † | Prefect of the Congregation of Regular Discipline | Cardinal, Prefect of the Congregation of (Sacred) Rites | 
| 25.7 | Appointed | Chrysostome-Charles-Auguste Liausu, SS.CC. † | Prefect of Southern Oceania, Pacific (Oceania) | 
| 81.1 | Died | Vincenzo Maria Manieri, O.F.M. Conv. † | Bishop of Ruvo e Bitonto, Italy | 
|  | Appointed | Jesu-Yab Melchisedech † | Bishop of Salmas {Shahpour} (Chaldean), Iran | 
|  | Ordained Bishop | Jesu-Yab Melchisedech † | Bishop of Salmas {Shahpour} (Chaldean), Iran | 
| 62.8 | Appointed | Antonio Pallotta † | Cardinal, Prefect of the Apostolic Signatura | 
| 25.9 | Ordained Priest | Karl Pooten † | Priest | Archbishop of Bar (Antivari), Montenegro | 
| 69.7 | Died | Joseph (Josip) Salecz (Žalec) † | Auxiliary Bishop of Zagreb (Agram), Croatia | 
| 23.8 | Ordained Priest | Pierre Tilkian † | Priest | Bishop of Prusa (Bostra, Brussa) (Armenian), Turkey | 
| Jan | 60.3 | Ordained Bishop | Mariano Baldassare Medici, O.P. † | Bishop of Cervia, Italy | 
| 2 Jan |  | Born | Rafael Celedón † |  | Bishop of Santa Marta, Colombia | 
| 77.2 | Died | Joaquim de Sant’Ana Carvalho † | Bishop Emeritus of Faro {Algarve}, Portugal | 
| 3 Jan | 69.1 | Died | Giuseppe Maria Pezzella, O.E.S.A. † | Bishop of Calvi e Teano, Italy | 
| 4 Jan |  | Died | Jean-Baptiste Gridaine † | Vicar Apostolic of Sweden | 
| 6 Jan | 78.6 | Died | Giovanni Antonio de Fulgure, C.M. † | Archbishop of Taranto, Italy | 
| 7 Jan |  | Born | Jules-Denis-Marie-Dieudonné Le Hardy du Marais † |  | Bishop of Laval, France | 
| 9 Jan |  | Born | Fernando Antonio Arturo de Merino y Ramírez † |  | Archbishop of Santo Domingo, Dominican Republic | 
| 13 Jan | 62.9 | Ordained Bishop | Andrew Carruthers † | Titular Bishop of Ceramus | Vicar Apostolic of Eastern District, Scotland, Great Britain | 
| 21 Jan |  | Born | Antonio Colomer, O.P. † |  | Vicar Apostolic of Northern Tonking {Tonkino Settentrionale}, Viet Nam | 
| 22 Jan |  | Born | Ezechias Banci, O.F.M. Ref. † |  | Vicar Apostolic of Northwestern Hupeh {Hu-Pè Occiduo-Settentrionale}, China | 
| 57.5 | Appointed | Michael Blake † | Bishop of Dromore, Ireland | 
| 44.6 | Appointed | John Briggs † | Coadjutor Vicar Apostolic of Northern District, England, Great Britain | Bishop Emeritus of Beverley, England, Great Britain | 
| 44.6 | Appointed | John Briggs † | Titular Bishop of Dragobitia (Drago) | Bishop Emeritus of Beverley, England, Great Britain | 
| 26 Jan | 69.9 | Died | Bernardo Martínez Carnero † | Bishop of Islas Canarias {Canary Islands}, Spain | 
|  | Died | Jakiv (Jakub) Martusevyc (Martusiewicz) † | Archbishop of Polotsk (Połock)-Vitebsk (Ukrainian), Belarus | 
| 27 Jan | 37.3 | Ordained Bishop | Louis-Marie-Edmond Blanquart de Bailleul † | Bishop of Versailles, France | Archbishop Emeritus of Rouen, France | 
| 58.1 | Ordained Bishop | François-René Boussen † | Titular Bishop of Ptolemais in Thebaide | Bishop of Brugge {Bruges}, Belgium | 
| 64.9 | Died | José Caetano da Silva Coutinho † | Bishop Emeritus of São Sebastião do Rio de Janeiro, Brazil | Bishop | 
| 28 Jan | 75.1 | Died | Antoine-Xavier de Neirac † | Bishop of Tarbes, France | 
| 2 Feb | 78.5 | Died | Giulio Rossi † | Bishop of Pescia, Italy | 
| 3 Feb | 76.1 | Died | Tommaso Maria Raimondo Leopoldo Arezzo † | Cardinal, Cardinal-Bishop of Sabina | 
|  | Born | Guglielmo Maria d’Ambrogi, O.E.S.A. † |  | Bishop Emeritus of Tivoli, Italy | 
| 6 Feb | 59.4 | Resigned | Giuseppe della Porta Rodiani † | Vicegerent of Roma {Rome}, Italy | Cardinal, Auxiliary Bishop | 
| 7 Feb |  | Born | Vincent Francis Vinyes, O.P. † |  | Priest of Order of Friars Preachers | 
| 8 Feb | 44.9 | Died | Louis-François-Auguste de Rohan Chabot † | Cardinal, Archbishop of Besançon, France | 
| 10 Feb | 35.7 | Resigned | Giacomo Luigi Brignole † | Apostolic Nuncio to Florence (Tuscany), Italy | Cardinal, Prefect of the Congregation of the Index | 
| 74.8 | Ordained Bishop | Jean-Louis-Simon Lemercier † | Bishop of Beauvais, France | Bishop Emeritus | 
|  | Born | Camillo Mazzella, S.J. † |  | Cardinal, Prefect of the Congregation of (Sacred) Rites | 
|  | Born | Enrico (Ernesto) Mazzella † |  | Archbishop of Bari (-Canosa), Italy | 
| 65.3 | Ordained Bishop | Leonardo Brandão de Sousa, C.O. † | Bishop of Pinhel, Portugal | 
| 68.3 | Ordained Bishop | Placide-Bruno Valayer † | Bishop of Verdun, France | Bishop Emeritus | 
| 12 Feb |  | Born | Paolo Marmarian † |  | Bishop of Trabzon (Trebisonda) (Armenian), Turkey | 
| 13 Feb |  | Born | Giacinto Arcangeli † |  | Bishop of Asti, Italy | 
| 14 Feb |  | Born | Ignazio Ghiurekian, C.M.V. † |  | Abbot General of Congregazione Mechitarista di Venezia | 
| 80.0 | Died | Bernard-Claude Panet † | Archbishop of Québec, Canada | 
| 54.2 | Succeeded | Joseph Signay † | Archbishop of Québec, Canada | 
| 19 Feb | 50.7 | Appointed | Antonio Luigi Piatti † | Vicegerent of Roma {Rome}, Italy | Titular Patriarch of Antiochia {Antioch} | 
| 20 Feb | 37.0 | Ordained Bishop | Jacques-Marie-Adrien-Césaire Mathieu † | Bishop of Langres, France | Cardinal, Archbishop of Besançon, France | 
| 24 Feb | 59.9 | Selected | Julián Alonso, O. Praem. † | Bishop of Lérida, Spain | 
| 25 Feb | 80.5 | Died | Charles Brault † | Archbishop of Albi, France | 
| 26 Feb |  | Born | Constant-Ludovic-Marie Guillois † |  | Bishop Emeritus of Le Puy-en-Velay, France | 
| 27 Feb | 58.7 | Selected | Diego Capece † | Bishop of Ampurias e Civita, Italy | Bishop of Ampurias e Tempio, Italy | 
| Mar | 31.9 | Ordained Priest | Alessandro Barnabó † | Priest | Cardinal, Prefect of the Congregation for Propagation of the Faith | 
| 2 Mar | 22.9 | Ordained Priest | Francesco Marie Alli Maccarani † | Priest of San Miniato, Italy | Bishop | 
| 22.5 | Ordained Priest | Manuel de Santa Rita Barros, T.O.R. † | Priest of Third Order Regular of St. Francis of Penance | Bishop of Angola e Congo | 
| 58.5 | Died | Domenico Bellusci † | Titular Bishop of Sinope | 
|  | Born | Carlo Quaroni † |  | Titular Bishop of Cyme | 
| 3 Mar | 22.0 | Ordained Deacon | Enrico Gajo, O.F.M. Cap. † | Deacon of Order of Friars Minor Capuchin | Bishop of Bobbio, Italy | 
| 22.5 | Ordained Priest | Bonfiglio Mura, O.S.M. † | Priest of Order of Friar Servants of Mary | Archbishop of Oristano, Italy | 
| 46.7 | Ordained Bishop | František Vilém Tippmann † | Titular Bishop of Satala in Armenia | Auxiliary Bishop of Praha {Prague}, Czechia | 
| 4 Mar | 67.1 | Selected | Louis-Guillaume-Valentin Dubourg, P.S.S. † | Archbishop of Besançon, France | 
| 8 Mar | 47.9 | Selected | Filippo Giudice Caracciolo, C.O. † | Cardinal, Archbishop of Napoli {Naples}, Italy | 
| 36.4 | Appointed | John Murdoch † | Coadjutor Bishop of Kingston, Ontario, Canada | Vicar Apostolic of Western District, Scotland, Great Britain | 
| 36.4 | Appointed | John Murdoch † | Titular Bishop of Thabraca | Vicar Apostolic of Western District, Scotland, Great Britain | 
| 57.1 | Selected | José Joaquim Pereira de Miranda, C.M. † | Bishop of Macau, China | Priest of Congregation of the Mission | 
| 33.0 | Appointed | John Baptist Purcell † | Bishop of Cincinnati, Ohio, USA | Archbishop of Cincinnati, Ohio, USA | 
| 42.0 | Appointed | Frederick John Conrad Résé (Reze) † | Bishop of Detroit, Michigan, USA | 
| 73.1 | Died | Georg Michael Wittmann † | Auxiliary Bishop of Regensburg, Germany | 
| 9 Mar | 49.1 | Selected | Giovanni Antonio Gianotti (Giannotti) † | Archbishop of Sassari, Italy | Bishop of Saluzzo, Italy | 
| 44.3 | Selected | Giovanni Negri † | Bishop of Tortona, Italy | 
| 78.5 | Died | [Thomas-Juste Poullard] † | Bishop Emeritus of [Saône-et-Loire (Constitutional), France] | 
| 13 Mar | 81.1 | Died | Ignace V Cattan (Qattan) † | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria | 
| 14 Mar |  | Born | Andrea Policarpo Timoni † |  | Archbishop of Izmir (Smirne), Turkey | 
| 15 Mar | 56.1 | Died | Robert Gradwell † | Coadjutor Vicar Apostolic of London District, England, Great Britain | 
| 17 Mar |  | Born | Luigi Piavi (Biavi), O.F.M. Obs. † |  | Patriarch of Jerusalem {Gerusalemme}, Palestine | 
| 57.6 | Ordained Bishop | Michael Blake † | Bishop of Dromore, Ireland | 
| 69.3 | Appointed | Benedict Joseph Flaget, P.S.S. † | Bishop of Bardstown, Kentucky, USA | Bishop of Louisville, Kentucky, USA | 
| 54.3 | Selected | Franz Xaver von Schwäbl † | Bishop of Regensburg, Germany | 
| 19 Mar | 74.6 | Died | Pedro Valera y Jiménez † | Archbishop of Santo Domingo, Dominican Republic | 
| 20 Mar | 51.8 | Selected | Dionisio-Andrea Pasio † | Bishop of Alessandria (della Paglia), Italy | 
| 22 Mar | 64.2 | Appointed | Bartholomew Crotty † | Bishop of Cloyne and Ross, Ireland | 
| 23 Mar | 24.2 | Ordained Priest | Benedetto Augusto † | Priest | Bishop of Lacedonia, Italy | 
| 24.1 | Ordained Priest | Giuseppe de’ Bianchi Dottula † | Priest | Archbishop of Trani e Barletta (e Nazareth e Bisceglie), Italy | 
| 22.6 | Ordained Priest | Giandomenico Falconi † | Priest | Prelate Emeritus of Altamura ed Acquaviva delle Fonti, Italy | 
| 24 Mar | 27.6 | Ordained Priest | Lodovico Altieri † | Priest | Cardinal, Prefect of the Congregation of the Index | 
| 53.3 | Selected | Maximos III Michel Mazloum † | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria | 
| 53.3 | Selected | Maximos III Michel Mazloum † | Bishop of Damas (Melkite Greek), Syria | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria | 
| 26 Mar | 30.2 | Ordained Priest | Tobias Kirby † | Priest | Titular Archbishop of Ephesus | 
| 28 Mar | 74.1 | Died | Alois Jozef Krakowski von Kolowrat † | Archbishop of Praha {Prague}, Czechia | 
|  | Born | Jean-Amand Lamaze, S.M. † |  | Vicar Apostolic of Central Oceania, Tonga | 
| 45.9 | Selected | Anastasius Johannes Sedlag † | Bishop of Chelmno (Culma, Kulm), Poland | 
| 29 Mar | 39.5 | Appointed | Jean-Baptiste Auvergne † | Titular Archbishop of Iconium | 
| 39.5 | Appointed | Jean-Baptiste Auvergne † | Apostolic Delegate to Syria | Titular Archbishop of Iconium | 
| 39.5 | Appointed | Jean-Baptiste Auvergne † | Apostolic Delegate to Egypt and Arabia | Titular Archbishop of Iconium | 
| 31 Mar |  | Born | Abel-Anastase Germain † |  | Bishop of Coutances (-Avranches), France | 
|  | Born | Ioannis Marangò (Marengo) † |  | Archbishop of Athēnai {Athens}, Greece | 
| 1 Apr |  | Died | Pietro Ginaj † | Bishop Emeritus of Pult (Pulati), Albania | 
| 2 Apr | 34.2 | Appointed | [Yosyf (Józef) Semashko (Siemaszko)] † | Bishop of Žyrovyci (ROC), Lithuania | Archbishop | 
| 6 Apr |  | Born | Egidius Jünger † |  | Bishop of Nesqually, Washington, USA | 
| 7 Apr | 72.3 | Died | Donat Nicholas Vincenzo Zaccaria Boccardo, O.F.M. Cap. † | Bishop of Crotone (Cotrone), Italy | 
| 55.6 | Selected | Giovanni Domenico di Guido † | Bishop of Oria, Italy | 
| 54.2 | Selected | Francesco Iovinelli, C.M. † | Bishop of Bovino, Italy | 
| 8 Apr |  | Born | Joseph Georg von Ehrler † |  | Bishop of Speyer, Germany | 
|  | Born | Francis McCormack † |  | Bishop Emeritus of Galway and Kilmacduagh, Ireland | 
| 9 Apr | 82.4 | Died | Pedro Gutiérrez de Cos y Saavedra Seminario † | Bishop of Puerto Rico (Porto Rico) | 
| 13 Apr | 72.4 | Resigned | Antonio Domenico Gamberini † | Bishop of Orvieto, Italy | Cardinal, Cardinal-Bishop of Sabina | 
| 14 Apr | 75.0 | Appointed | Jozafat Bułhak, O.S.B.M. † | Archbishop of Polotsk (Połock)-Vitebsk (Ukrainian), Belarus | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine | 
| 55.8 | Ordained Bishop | Ângelo de Nossa Senhora da Boa-Morte, O.F.M. Disc. † | Bishop of Elvas, Portugal | 
| 15 Apr | 60.1 | Confirmed | Julián Alonso, O. Praem. † | Bishop of Lérida, Spain | 
| 63.1 | Appointed | Jean Arnold Barrett † | Bishop of Namur {Namen}, Belgium | 
| 53.5 | Elevated to Cardinal | Castruccio Castracane degli Antelminelli † | Cardinal, Bishop of Palestrina, Italy | 
| 58.9 | Confirmed | Diego Capece † | Bishop of Ampurias e Civita, Italy | Bishop of Ampurias e Tempio, Italy | 
| 66.4 | Appointed | Józef Chełkowski † | Auxiliary Bishop of Gniezno e Poznań, Poland | 
| 66.4 | Appointed | Józef Chełkowski † | Titular Bishop of Tricomia | Auxiliary Bishop of Gniezno e Poznań, Poland | 
| 50.3 | Appointed | Benedetto Francesco Paolo Antonio Denti, O.S.B. † | Bishop of Caltagirone, Italy | 
| 66.4 | Appointed | Joachim-Jean-Xavier d’Isoard † | Cardinal-Priest of Santissima Trinità al Monte Pincio | Cardinal, Archbishop of Auch, France | 
| 38.4 | Confirmed | Agostino-Maria de Mari † | Bishop of Savona e Noli, Italy | 
| 57.1 | Confirmed | Pablo García Abella, C.O. † | Bishop of Calahorra y La Calzada, Spain | Archbishop of Valencia, Spain | 
| 50.4 | Appointed | Francesco Gentilini † | Bishop of Rimini, Italy | Bishop Emeritus | 
| 49.2 | Confirmed | Giovanni Antonio Gianotti (Giannotti) † | Archbishop of Sassari, Italy | Bishop of Saluzzo, Italy | 
| 48.0 | Confirmed | Filippo Giudice Caracciolo, C.O. † | Cardinal, Archbishop of Napoli {Naples}, Italy | 
| 63.3 | Appointed | Kajetan von Kowalski † | Auxiliary Bishop of Gniezno e Poznań, Poland | 
| 63.3 | Appointed | Kajetan von Kowalski † | Titular Bishop of Maximianopolis in Palaestina | Auxiliary Bishop of Gniezno e Poznań, Poland | 
| 52.9 | Confirmed | Ioan Lemeni † | Bishop of Făgăraş (Romanian), Romania | Bishop Emeritus | 
| 51.1 | Appointed | Angelo Mai † | Secretary of the Congregation for Propagation of the Faith | Cardinal, Librarian of the Vatican Library | 
| 60.2 | Confirmed | Pedro Martínez de San Martín † | Bishop of Barcelona, Spain | 
| 84.8 | Elevated to Cardinal | Lorenzo Girolamo Mattei † | Cardinal, Titular Patriarch of Antiochia {Antioch} | 
| 44.4 | Confirmed | Giovanni Negri † | Bishop of Tortona, Italy | 
| 48.1 | Appointed | Carlo Odescalchi, S.J. † | Cardinal-Bishop of Sabina | Priest of Society of Jesus | 
| 48.1 | Appointed | Carlo Odescalchi, S.J. † | Cardinal-Priest of San Lorenzo in Damaso | Priest of Society of Jesus | 
| 54.3 | Appointed | Antonio Francesco Orioli, O.F.M. Conv. † | Bishop of Orvieto, Italy | Cardinal, Prefect of the Congregation of Bishops and Regulars | 
| 54.2 | Appointed | Lorenzo Parigini † | Bishop of Urbania e Sant’Angelo in Vado, Italy | 
| 51.8 | Confirmed | Dionisio-Andrea Pasio † | Bishop of Alessandria (della Paglia), Italy | 
| 61.7 | Confirmed | Lorenzo Ramón Lahoz de San Blas, Sch. P. † | Bishop of Huesca, Spain | 
| 54.4 | Confirmed | Franz Xaver von Schwäbl † | Bishop of Regensburg, Germany | 
| 50.1 | Elevated to Cardinal | Francesco Serra Cassano † | Cardinal, Archbishop of Capua, Italy | 
| 65.8 | Confirmed | Gaetano Maria Giuseppe Benedetto Placido Vincenzo Trigona e Parisi † | Cardinal, Archbishop of Palermo, Italy | 
| 67.8 | Appointed | Francesco Maria Zoppi † | Titular Bishop of Geras | Bishop Emeritus of Massa Carrara, Italy | 
| 18 Apr | 50.1 | Appointed | Francesco Serra Cassano † | Cardinal-Priest of Santi XII Apostoli | Cardinal, Archbishop of Capua, Italy | 
| 20 Apr | 66.7 | Died | Francesco Antonio Visocchi † | Bishop of Gallipoli, Italy | 
| 21 Apr | 23.0 | Ordained Priest | Johann Baptist Rudolph Kutschker † | Priest of Olomouc, Czechia | Cardinal, Archbishop of Wien {Vienna}, Austria | 
| 44.4 | Ordained Bishop | Giovanni Negri † | Bishop of Tortona, Italy | 
| 51.9 | Ordained Bishop | Dionisio-Andrea Pasio † | Bishop of Alessandria (della Paglia), Italy | 
| 27 Apr | 44.7 | Appointed | Michael Johann Wagner † | Bishop of Austria, Military | Bishop of Sankt Pölten, Austria | 
| 28 Apr | 64.1 | Died | Salvatore de Luca † | Archbishop of Rossano, Italy | 
| 29 Apr | 69.4 | Died | Johann Heinrich Milz † | Auxiliary Bishop of Trier, Germany | 
| 30 Apr |  | Born | Prosper Auguste Dusserre † |  | Archbishop of Alger, Algeria |