| Date | Age | Event | Bishop | Title | Current Title | 
| unknown | 39.0 | Appointed | Joseph IX Ragi (Youssef) El-Khazen (Gazeno) † | Bishop of Tripoli del Libano {Tarabulus} (Maronite) | Patriarch of Antiochia {Antioch} (Maronite), Lebanon | 
| 26.1 | Ordained Priest | José Ávila Lamas † | Priest | Bishop of Orense, Spain | 
| 24.1 | Ordained Priest | Mariano Benito Barrio y Fernández † | Priest | Cardinal, Archbishop of Valencia, Spain | 
| 78.5 | Died | Sebastiano Brisciano † | Titular Bishop of Hippos | 
| 22.5 | Ordained Priest | Paolo Brunoni † | Priest | Titular Patriarch of Antiochia {Antioch} | 
| 38.2 | Incardinated | Thomas Lawrence Burgess † | Priest of Western District, England, Great Britain | Bishop of Clifton, England, Great Britain | 
 | Born | Paolo Carnevali (Carnevale), O.F.M. Obs. † |  | Coadjutor Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China | 
| 15.3 | Professed | Bernardo Conde y Corral, O. Praem. † | Member of Order of the Canons Regular of Premontre; Norbertines | Bishop of Zamora, Spain | 
| 16.0 | Entered | Thomas Louis Connolly, O.F.M. Cap. † | Member of Order of Friars Minor Capuchin | Archbishop of Halifax, Nova Scotia, Canada | 
| 19.9 | Professed | Raffaele d’Ambrosio, O.F.M. Ref. † | Member of Order of Reformed Friars Minor | Archbishop Emeritus of Durrës (Durazzo), Albania | 
| 63.4 | Died | Eustachio Dentice, C.R. † | Archbishop of Manfredonia (e Vieste), Italy | 
| 16.2 | Professed | Gabriel Grioglio, O.F.M. Obs. † | Member of Order of Observant Friars Minor | Vicar Apostolic Emeritus of Shansi {Scian-Si} (Chan-Si), China | 
| 23.8 | Ordained Priest | Utto (Georg) Lang, O.S.B. † | Priest of Regensburg, Germany | President Emeritus of Order of Saint Benedict | 
| 23.2 | Perpetual Vows | Antonio Martín y Bienes, O.SS.T. † | Member of Order of the Most Holy Trinity | Prior General | 
| 54.2 | Resigned | Ludovico Micara, O.F.M. Cap. † | Minister General of Order of Friars Minor Capuchin | Cardinal, Cardinal-Bishop of Ostia (e Velletri) | 
 | Ordained Priest | Giwargis Peter (Georges-Pierre) Mawlada (de Natali) † | Priest | Bishop of Diarbekir (Amida) (Chaldean), Turkey | 
| 73.0 | Appointed | Bartolomeo Pacca † | Archpriest of the Arcibasilica di San Giovanni in Laterano {Saint John Lateran Basilica} | Cardinal, Secretary of the Congregation for Universal Inquisition | 
| 27.9 | Ordained Priest | Benoit Planchet, S.J. † | Priest of Society of Jesus | Apostolic Delegate to Mesopotamia, Kurdistan, and Lesser Armenia, Iraq | 
| 31.7 | Incardinated | Józef Alojzy Pukalski † | Priest of Tarnów, Poland | Bishop | 
| 24.0 | Ordained Priest | James Ryan † | Priest of Killaloe, Ireland | Coadjutor Bishop | 
| 58.0 | Appointed | Domenico Secondi, O.F.M. Conv. † | Minister General of Order of Friars Minor Conventual | Bishop Emeritus of Assisi, Italy | 
| 24.7 | Professed | Emmanuel-Jean-François Verrolles, M.E.P. † | Priest of La Société des Missions Etrangčres | Vicar Apostolic of Liaotung and Manchuria, China | 
| 1 Jan | 75.9 | Died | Giuseppe Maria Pietro Grimaldi † | Archbishop of Vercelli, Italy | 
| 2 Jan | 79.5 | Died | Fabiano Giuseppe Giacomo Luigi Galliani, O.F.M. Cap. † | Titular Bishop of Pergamum | 
 | Born | Clément Ghazarossian † |  | Bishop of Ancira (Angora) (Armenian), Turkey | 
 | Born | Giuseppe Ingami † |  | Bishop of Orvieto, Italy | 
| 4 Jan | 83.0 | Died | Tomasz Nowiński, C.R.S. Sepul. † | Auxiliary Bishop of Kraków, Poland | 
| 9 Jan | 68.1 | Selected | Charles-André-Toussaint-Bruno de Ramond-Lalande † | Archbishop of Sens (-Auxerre), France | Bishop of Rodez, France | 
| 56.9 | Selected | Juan Sánchez Barragán y Vera † | Bishop of Ceuta, Spain | 
| 10 Jan |  | Born | Mariano Cuartero y Sierra, O.A.R. † |  | Bishop of Nueva Segovia, Philippines | 
| 77.8 | Died | Filippo Ghighi † | Bishop of Sovana (Soana), Italy | 
| 76.1 | Died | Emeric Karol Raffay † | Bishop of Bosna (Djakovo) et Srijem, Croatia | 
| 12 Jan | 38.0 | Appointed | William Abraham † | Bishop of Waterford and Lismore, Ireland | 
| 61.3 | Installed | Joseph Vitus Burg † | Bishop of Mainz, Germany | 
| 14 Jan | 73.6 | Died | Antonio Leonardis da Lucinico † | Bishop of Trieste e Capodistria (Trst i Koper), Italy | 
| 16 Jan | 43.4 | Appointed | Gabriel Henri Jérôme de Solages † | Prefect of South Sea Islands / Oceania / Islands of the Great Ocean, Pacific (Oceania) | Prefect of Bourbon, Réunion | 
| 20 Jan | 38.4 | Selected | Pierre Giraud † | Bishop of Rodez, France | Cardinal, Archbishop of Cambrai, France | 
| 23 Jan | 22.1 | Ordained Deacon | Ágoston Roskoványi † | Deacon | Bishop of Nitra, Slovakia | 
| 24 Jan | 93.5 | Died | Giuseppe Firrao † | Cardinal, Secretary of the Congregation of Bishops and Regulars | 
| 62.0 | Ordained Bishop | Wincenty Saryusz Karol Skórkowski † | Bishop of Kraków, Poland | 
| 25 Jan | 52.3 | Selected | Ramón Montero † | Archbishop (Personal Title) of Coria, Spain | Archbishop of Burgos, Spain | 
| 28 Jan | 83.3 | Died | Silvestro (Jean Baptiste) Micců, O.F.M. Obs. † | Archbishop of Amalfi, Italy | 
| 29 Jan | 58.2 | Confirmed | Filip Felicjan Szumborski, O.S.B.M. † | Bishop of Chełm and Bełz (Ukrainian), Poland | 
| 30 Jan | 23.9 | Professed | Antoine-Magloire Doumer, SS.CC. † | Member of Congregation of the Sacred Hearts of Jesus and Mary | Coadjutor Vicar Apostolic of Tahiti {Isole Tahiti}, French Polynesia, Pacific (Oceania) | 
| 31 Jan |  | Born | Pedro Maria de Lacerda † |  | Bishop of Săo Sebastiăo do Rio de Janeiro, Brazil | 
| Feb |  | Ordained Bishop | Pietro Borzi † | Bishop of Sapë, Albania | 
| 23.9 | Ordained Priest | Antoine-Magloire Doumer, SS.CC. † | Priest of Congregation of the Sacred Hearts of Jesus and Mary | Coadjutor Vicar Apostolic of Tahiti {Isole Tahiti}, French Polynesia, Pacific (Oceania) | 
| 2 Feb | 32.7 | Appointed | Giacomo Luigi Brignole † | Apostolic Nuncio to Florence (Tuscany), Italy | Cardinal, Prefect of the Congregation of the Index | 
| 68.2 | Died | Carlo Mauri † | Substitute (Sostituto) of the Secretariat of State | 
| 9 Feb | 72.5 | Died | Francesco Vincenzo Lombard † | Bishop of Susa, Italy | 
| 12 Feb |  | Born | Augustin Göckel † |  | Auxiliary Bishop of Paderborn, Germany | 
| 15 Feb |  | Born | Bl. Edoardo Giuseppe Rosaz † |  | Bishop of Susa, Italy | 
| 18 Feb | 81.2 | Died | Giovanni Pietro Martino Pellegrini † | Auxiliary Bishop of Udine, Italy | 
| 21 Feb | 81.1 | Died | Anne-Antoine-Jules de Clermont-Tonnerre † | Cardinal, Archbishop of Toulouse (-Narbonne), France | 
| 24.9 | Professed | Patrick Bonaventure Geoghegan, O.F.M. Ref. † | Member of Order of Reformed Friars Minor | Bishop of Goulburn, Australia | 
| 57.4 | Ordained Bishop | Justo de Santa María de Oro y Albarracín, O.P. † | Titular Bishop of Thaumacus | Bishop of San Juan de Cuyo, Argentina | 
| 23 Feb |  | Born | Vincenzo Addessi † |  | Bishop of Diano-Teggiano, Italy | 
| 24 Feb | 60.3 | Selected | János Horváth † | Bishop of Székesfehérvár (Albareale), Hungary | 
| 25 Feb | 32.2 | Appointed | Francis Patrick Kenrick † | Coadjutor Bishop of Philadelphia, Pennsylvania, USA | Archbishop of Baltimore, Maryland, USA | 
| 32.2 | Appointed | Francis Patrick Kenrick † | Titular Bishop of Arathia | Archbishop of Baltimore, Maryland, USA | 
| Mar | 23.0 | Ordained Priest | William Riddell † | Priest of Northern District, England, Great Britain | Vicar Apostolic | 
| 3 Mar | 43.3 | Installed | François-Marie-Edouard de Gualy † | Bishop of Saint-Flour, France | Archbishop of Albi, France | 
| 6 Mar | 22.7 | Ordained Priest | Francesco Marinelli, O.E.S.A. † | Priest of Order of Hermits of St. Augustine | Titular Bishop of Porphyreon | 
| 56.4 | Selected | José Maria Seguí Molas, O.S.A. † | Archbishop of Manila, Philippines | 
| 9 Mar |  | Born | Juliusz Józef Dinder † |  | Archbishop of Gniezno e Poznań, Poland | 
| 12 Mar | 52.2 | Selected | Carlo Gritti Morlacchi † | Bishop of Bergamo, Italy | 
| 57.9 | Selected | Carlo Emmanuelle Sardagna de Hohenstein † | Bishop of Cremona, Italy | Bishop Emeritus | 
| 13 Mar | 57.1 | Resigned | Thomas Weld † | Coadjutor Bishop of Kingston, Ontario, Canada | Cardinal, Coadjutor Bishop Emeritus | 
| 15 Mar | 69.2 | Confirmed | Aleksandar Alagović † | Bishop of Zagreb (Agram), Croatia | 
| 55.3 | Confirmed | Severo Leonardo Andriani Escofet † | Bishop of Pamplona, Spain | Bishop of Pamplona (-Tudela), Spain | 
| 48.6 | Appointed | Filippo Appignanesi † | Bishop of Ripatransone, Italy | 
| 59.2 | Appointed | Luigi Maria Blancis da Cirič, O.F.M. Ref. † | Bishop of Syros (e Milos), Greece | 
| 48.0 | Appointed | Niccola Belletti † | Bishop of Acquapendente, Italy | Bishop of Foligno, Italy | 
| 32.8 | Appointed | Giacomo Luigi Brignole † | Titular Archbishop of Nazianzus | Cardinal, Prefect of the Congregation of the Index | 
| 67.4 | Appointed | Ignazio Cafisi † | Auxiliary Bishop of Agrigento (Girgenti), Italy | 
| 67.4 | Appointed | Ignazio Cafisi † | Titular Bishop of Aenus | Auxiliary Bishop of Agrigento (Girgenti), Italy | 
| 37.9 | Appointed | Filippo de Angelis † | Titular Archbishop of Cartagine | Cardinal, Archbishop of Fermo, Italy | 
| 61.2 | Appointed | Domenico De Simone † | Cardinal-Deacon of Sant’Angelo in Pescheria | Cardinal, Deacon of the Roman Curia - Other | 
| 61.2 | Elevated to Cardinal | Domenico De Simone † | Cardinal, Deacon of the Roman Curia - Other | 
| 55.3 | Selected | Marcin von Dunin Sulgostowski † | Archbishop of Gniezno e Poznań, Poland | 
| 44.4 | Appointed | Paulus Augustus Foscolo † | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine | Titular Patriarch of Alexandria {Alessandria} | 
| 36.1 | Appointed | Ignazio Giustiniani † | Bishop of Chios (Scio), Greece | 
| 51.4 | Appointed | Giambattista Guerra † | Bishop of Bertinoro, Italy | 
| 63.2 | Appointed | Andrzej Benedykt Kłągiewicz † | Auxiliary Bishop of Vilnius, Lithuania | Bishop | 
| 63.2 | Appointed | Andrzej Benedykt Kłągiewicz † | Titular Bishop of Chrysopolis in Arabia | Bishop of Vilnius, Lithuania | 
| 66.1 | Confirmed | Joaquín López y Sicilia † | Archbishop of Burgos, Spain | Archbishop of Valencia, Spain | 
| 87.2 | Died | Andrea de Lucia † | Bishop of Calvi e Teano, Italy | 
| 64.3 | Appointed | Raffaele Mazzio † | Cardinal, Cardinal-Priest of Santa Maria in Trastevere | 
| 64.3 | Elevated to Cardinal | Raffaele Mazzio † | Cardinal, Cardinal-Priest of Santa Maria in Trastevere | 
| 43.3 | Confirmed | Pavao Klement Miošić (Miossich) Kačić † | Bishop of Split-Makarska (Spalato-Macarska), Croatia | 
| 52.5 | Confirmed | Ramón Montero † | Bishop of Coria, Spain | Archbishop of Burgos, Spain | 
| 61.4 | Appointed | Pietro Antonio Nostrano † | Archbishop of Corfů, Greece | 
| 66.3 | Succeeded | Giuseppe Maria Pezzella, O.E.S.A. † | Bishop of Calvi e Teano, Italy | 
| 57.1 | Confirmed | Juan Sánchez Barragán y Vera † | Bishop of Ceuta, Spain | 
| 60.7 | Confirmed | Antonio Savorin † | Bishop of Chioggia, Italy | 
| 68.7 | Confirmed | Antal Török † | Bishop of Csanád, Hungary | 
| 57.1 | Elevated to Cardinal | Thomas Weld † | Cardinal, Coadjutor Bishop Emeritus of Kingston, Ontario, Canada | 
| 18 Mar | 66.3 | Resigned | Michele Arcangelo Del Forno † | Bishop of Trivento, Italy | Bishop Emeritus | 
| 46.9 | Selected | Moritz-Fabian Roten † | Bishop of Sion {Sitten}, Switzerland | 
| 20 Mar | 86.3 | Died | [Pierre-Joseph Porion] † | Bishop Emeritus of [Pas-de-Calais (Constitutional), France] | 
| 21 Mar | 38.2 | Ordained Bishop | William Abraham † | Bishop of Waterford and Lismore, Ireland | 
| 48.6 | Ordained Bishop | Filippo Appignanesi † | Bishop of Ripatransone, Italy | 
| 48.0 | Ordained Bishop | Niccola Belletti † | Bishop of Acquapendente, Italy | Bishop of Foligno, Italy | 
| 51.4 | Ordained Bishop | Giambattista Guerra † | Bishop of Bertinoro, Italy | 
| 65.9 | Ordained Bishop | Pedro Rodriguez de Miranda, O. de M. † | Bishop of Jaca, Spain | 
| 51.9 | Ordained Bishop | Manuel Vicuńa Larraín † | Titular Bishop of Ceramus | Archbishop of Santiago de Chile | 
| 24 Mar |  | Born | Vicente Ferrer Carreras, O.P. † |  | Coadjutor Vicar Apostolic of Fo-Kien, China | 
 | Born | Aurelio Zonghi † |  | Bishop Emeritus of Jesi, Italy | 
| 25 Mar | 23.0 | Ordained Priest | Adrian Włodarski † | Priest of Wrocław (Breslau), Poland | Auxiliary Bishop | 
| 27 Mar | 23.3 | Ordained Priest | Jacques-Marie-Achille Ginoulhiac † | Priest | Archbishop of Lyon (-Vienne), France | 
| 24.0 | Ordained Priest | Joseph Melcher † | Priest of Saint Louis, Missouri, USA | Bishop of Green Bay, Wisconsin, USA | 
| 28 Mar | 32.8 | Ordained Bishop | Giacomo Luigi Brignole † | Titular Archbishop of Nazianzus | Cardinal, Prefect of the Congregation of the Index | 
| 51.2 | Selected | Etienne-Bruno-Marie d’Arbou † | Bishop of Bayonne, France | Bishop Emeritus | 
| 57.4 | Selected | Paul-Thérčse-David d’Astros † | Cardinal, Archbishop of Toulouse (-Narbonne), France | 
| 58.4 | Ordained Bishop | Filip Felicjan Szumborski, O.S.B.M. † | Bishop of Chełm and Bełz (Ukrainian), Poland | 
| Apr | 67.5 | Ordained Bishop | Ignazio Cafisi † | Titular Bishop of Aenus | Auxiliary Bishop of Agrigento (Girgenti), Italy | 
| 2 Apr | 85.6 | Died | Giulio Maria della Somaglia † | Archivist of the Vatican Library | Cardinal, Librarian | 
| 23.0 | Ordained Priest | Mattia Hirschler † | Priest | Bishop of Przemyśl, Poland | 
| 3 Apr | 64.8 | Selected | Giovanni Battista Accusani † | Bishop of Vigevano, Italy | 
| 62.7 | Selected | Giuseppe Vincenzo Airenti, O.P. † | Archbishop of Genova, Italy | 
| 45.8 | Selected | Giovanni Battista de Albertis † | Bishop of Ventimiglia, Italy | Bishop Emeritus | 
| 46.0 | Selected | Francesco Maria Icheri di Malabaila † | Bishop of Casale Monferrato, Italy | 
| 4 Apr | 62.8 | Installed | Michele Lanzetta † | Bishop of Oria, Italy | Bishop of Lacedonia, Italy | 
| 5 Apr | 66.1 | Died | Marino Carafa di Belvedere † |  | 
 | Born | Antonio Galibert † |  | Bishop of Santorini {Thira}, Greece | 
| 73.2 | Appointed | Bartolomeo Pacca † | Cardinal, Secretary of the Congregation for Universal Inquisition | 
| 6 Apr | 39.2 | Ordained Bishop | Joseph IX Ragi (Youssef) El-Khazen (Gazeno) † | Bishop of Tripoli del Libano {Tarabulus} (Maronite) | Patriarch of Antiochia {Antioch} (Maronite), Lebanon | 
 | Born | James Augustine Healy † |  | Bishop of Portland, Maine, USA | 
| 7 Apr | 75.9 | Died | Francesco Bertazzoli † | Cardinal, Prefect of the Congregation for Studies | 
| 10 Apr | 22.8 | Ordained Deacon | Gábor Máriássy † | Deacon | Auxiliary Bishop of Eger, Hungary | 
| 34.9 | Ordained Priest | Johannes Nepomuk von der Marwitz † | Priest of Chelmno (Culma, Kulm), Poland | Bishop | 
| 22.5 | Ordained Priest | John Thomas Mullock, O.F.M. Ref. † | Priest of Order of Reformed Friars Minor | Bishop of Saint John’s, Newfoundland, Canada | 
| 68.4 | Died | Charles-André-Toussaint-Bruno de Ramond-Lalande † | Bishop of Rodez, France | 
| 23.0 | Ordained Priest | Giuseppe Rotondo (Rotundo) † | Priest | Archbishop of Taranto, Italy | 
| 25.0 | Ordained Priest | Georg Anton von Stahl † | Priest of Würzburg, Germany | Bishop | 
| 12 Apr | 61.5 | Ordained Bishop | Pietro Antonio Nostrano † | Archbishop of Corfů, Greece | 
| 14 Apr |  | Born | Stefano Melchisedechian † |  | Bishop Emeritus of Erzerum (Garin) (Armenian) | 
| 22 Apr | 46.3 | Died | Robert Logan † | Bishop of Meath, Ireland | 
| 23 Apr | 79.6 | Appointed | Giuseppe Andrea Albani † | Cardinal, Librarian of the Vatican Library | 
| 38.0 | Appointed | Filippo de Angelis † | Apostolic Nuncio to Switzerland | Cardinal, Archbishop of Fermo, Italy | 
| 28 Apr | 66.1 | Selected | Jean-Joseph-Marie-Victoire de Cosnac † | Archbishop of Sens (-Auxerre), France | 
| 44.8 | Selected | Romain-Frédéric Gallard † | Bishop of Meaux, France | Coadjutor Archbishop of Reims, France | 
| 29 Apr |  | Born | William Giles † |  | Titular Bishop of Philadelphia in Lydia | 
| 30 Apr |  | Born | Rocco Cocchia, O.F.M. Cap. † |  | Archbishop of Chieti, Italy |