| Date | Age | Event | Bishop | Title | Current Title | 
|---|
| unknown | 40.0 | Appointed | Paul Aroutin † | Bishop of Alep [Beroea, Halab] (Maronite), Syria | 
|  | Born | Giovanni Barcia † |  | Titular Bishop of Croae | 
| 23.3 | Ordained Priest | Mariano Brezmes y Arredondo † | Priest | Bishop of Astorga, Spain | 
| 24.7 | Ordained Priest | João da França Castro e Moura, C.M. † | Priest | Bishop of Porto, Portugal | 
| 22.9 | Ordained Priest | Joseph Dixon † | Priest | Archbishop of Armagh, Ireland | 
| 28.4 | Incardinated | Justo Donoso Vivanco † | Priest of Santiago de Chile | Bishop of La Serena, Chile | 
| 17.9 | Professed | Enrico Gajo, O.F.M. Cap. † | Member of Order of Friars Minor Capuchin | Bishop of Bobbio, Italy | 
| 65.8 | Appointed | Pietro Angelo Luigi Pacifico Grati, O.S.M. † | Apostolic Administrator of Terracina, Priverno e Sezze, Italy | Titular Bishop of Callinicum | 
| 20.3 | Ordained Deacon | Bartolomé Manuel Herrera Vélez † | Deacon of Lima, Peru | Bishop of Arequipa, Peru | 
| 24.6 | Ordained Priest | Francisco Landeira y Sevilla † | Priest | Bishop of Cartagena (en España) | 
| 21.9 | Ordained Priest | Giuseppe-Maria Mucedola † | Priest | Bishop of Conversano, Italy | 
| 43.0 | Died | Félix Calixto Miranda y Suárez de Figueroa † | Bishop of Cuenca, Ecuador | 
|  | Born | José Ignacio Ordóñez † |  | Archbishop of Quito, Ecuador | 
| 20.3 | Professed | Antonio Maria (Niccolò) Panebianco, O.F.M. Conv. † | Member of Order of Friars Minor Conventual | Cardinal, Cardinal-Priest of Santi XII Apostoli | 
| 25.0 | Ordained Priest | Nicholas Power † | Priest | Coadjutor Bishop of Killaloe, Ireland | 
| 24.3 | Ordained Priest | Mariano Puigllat y Amigó † | Priest | Bishop of Lérida, Spain | 
| 26.8 | Incardinated | Valentin von Riedel † | Priest of München und Freising {Munich}, Germany | Bishop of Regensburg, Germany | 
|  | Ordained Bishop | Elie Safaro † | Bishop of Aqrā {Akra} (Chaldean), Iraq | 
| 22.8 | Ordained Priest | Alexandeer Maria Teppa, B. † | Priest of Clerics Regular of St. Paul | Superior General | 
| 22.0 | Ordained Priest | Valerio Antonio Jiménez (Ximenes) Hoyos † | Priest of Antioquía, Colombia | Bishop Emeritus of Medellín, Colombia | 
| 2 Jan |  | Born | Melezio (Mélèce) Fakkak † |  | Archbishop of Beirut and Jbeil {Bairut e Gibail} (Melkite Greek), Lebanon | 
| 3 Jan | 83.3 | Died | Orazio Magliola † | Bishop of Acerra, Italy | 
|  | Born | Francesco Solano del Risco, O.F.M. Obs. † |  | Bishop Emeritus of Chachapoyas, Peru | 
| 4 Jan |  | Born | Angelo Balzano † |  | Bishop Emeritus of Termoli, Italy | 
| 5 Jan | 41.2 | Appointed | Tommaso Pasquale Gizzi † | Official to Sardinia, Italy | Cardinal, Secretary Emeritus of the Secretariat of State | 
| 7 Jan | 61.7 | Appointed | Giovanni Francesco Falzacappa † | Cardinal, Prefect of the Apostolic Signatura | 
| 9 Jan | 90.7 | Died | Francesco Maria Fenzi † | Archbishop of Corfù, Greece | Archbishop Emeritus | 
| 11 Jan | 62.2 | Ordained Bishop | Joachim-Jean-Xavier d’Isoard † | Cardinal, Archbishop of Auch, France | 
| 46.3 | Ordained Bishop | Johann Michael Leonhard † | Titular Bishop of Alalis | Bishop of Austria, Military | 
| 12 Jan |  | Born | Edward Gilpin Bagshawe, C.O. † |  | Bishop Emeritus of Nottingham, England, Great Britain | 
| 15 Jan | 81.2 | Died | Tadeusz Kundzicz † | Auxiliary Bishop of Vilnius, Lithuania | 
|  | Born | John Leonard † |  | Vicar Apostolic of Cape of Good Hope, Western District {Capo di Buona Speranza, Distretto Occidentale}, South Africa | 
|  | Born | Augustus Maria Bernard Anthony John Gebhard Toebbe † |  | Bishop of Covington, Kentucky, USA | 
| 52.2 | Resigned | Antonio Tosti † | Official to Sardinia, Italy | Cardinal, Librarian of the Vatican Library | 
| 16 Jan |  | Born | Boghos Bédros (Paul Peter) XI Emmanuélian † |  | Patriarch of Cilicia (Armenian), Lebanon | 
| 73.0 | Died | Pietro Mola † | Bishop of Bergamo, Italy | 
| 30.3 | Appointed | Costantino Patrizi Naro † | Apostolic Nuncio to Florence (Tuscany), Italy | Cardinal, Secretary of the Congregation for Universal Inquisition | 
|  | Born | Américo Ferreira dos Santos Silva † |  | Cardinal, Bishop of Porto, Portugal | 
| 18 Jan | 40.8 | Ordained Bishop | Louis-François-Auguste de Rohan Chabot † | Cardinal, Archbishop of Besançon, France | 
| 19 Jan |  | Born | Luigi Domenico Cenci, T.C. † |  | Titular Bishop of Apollonia | 
| 87.1 | Died | [Joseph Monin], O. Praem. † | Bishop Emeritus of [Ardennes (Constitutional), France] | 
| 21 Jan |  | Born | Paul Leopold Haffner † |  | Bishop of Mainz, Germany | 
|  | Born | Giacinto Magliulo † |  | Bishop of Acerra, Italy | 
| 24 Jan | 63.5 | Selected | Emanuele Maria Bellorado, O.P. † | Bishop of Sant’Agata de’ Goti, Italy | 
| 63.5 | Selected | Emanuele Maria Bellorado, O.P. † | Bishop of Acerra, Italy | Bishop of Sant’Agata de’ Goti, Italy | 
| 68.1 | Selected | Donat Nicholas Vincenzo Zaccaria Boccardo, O.F.M. Cap. † | Bishop of Crotone (Cotrone), Italy | 
| 46.7 | Selected | Leone Ciampa, O.F.M. Disc. † | Archbishop of Reggio Calabria, Italy | Archbishop of Sorrento, Italy | 
| 57.7 | Selected | Matteo Franco, C.P.O. † | Bishop of Catanzaro, Italy | 
| 64.0 | Selected | Vincenzo Rocca † | Bishop of Larino, Italy | 
| 25 Jan | 63.6 | Ordained Bishop | Giovanni Antonio Benvenuti † | Cardinal, Bishop of Osimo e Cingoli, Italy | 
| 26 Jan | 78.2 | Died | Giuseppe Manfrin Provedi † | Bishop of Chioggia, Italy | 
| 28 Jan | 72.3 | Died | Joachim Józef Grabowski † | Auxiliary Bishop-Elect of Mohilev, Belarus | 
| 78.6 | Died | Omobono Offredi † | Bishop of Cremona, Italy | 
| 29 Jan | 71.0 | Died | Pierre-François-Gabriel-Raymond-Ignace-Ferdinand de Bausset-Roquefort † | Archbishop of Aix (-Arles-Embrun), France | 
| 2 Feb | 23.6 | Ordained Priest | John Martin Henni † | Priest of Cincinnati, Ohio, USA | Archbishop of Milwaukee, Wisconsin, USA | 
| 5 Feb | 74.7 | Died | Louis-Sylvestre de La Châtre † | Titular Bishop of Hemeria (Himeria) | 
| 40.9 | Installed | Louis-François-Auguste de Rohan Chabot † | Cardinal, Archbishop of Besançon, France | 
| 6 Feb |  | Born | Julien-François-Pierre Carmené † |  | Bishop Emeritus of Martinique (Fort-de-France e Saint Pierre), Antilles | 
| 8 Feb | 59.2 | Ordained Bishop | Stanisław Henryk Lubicz Choromański † | Titular Bishop of Adrasus | Archbishop of Warszawa {Warsaw}, Poland | 
|  | Born | Vital-Justin Grandin, O.M.I. † |  | Bishop of Saint-Albert, Alberta, Canada | 
| 9 Feb |  | Born | Josef Jan Evangelista Hais † |  | Bishop of Hradec Králové, Czechia | 
| 10 Feb | 49.1 | Resigned | Tommaso Bernetti † | Secretary of State | Cardinal, Secretary Emeritus | 
| 68.5 | Died | Annibale Francesco Clemente Melchiore Girolamo Nicola della Genga † | Pope (Roma {Rome}, Italy) | 
| 13 Feb | 75.5 | Died | Jakub Ignacy Dederko † | Bishop of Minsk, Belarus | 
|  | Born | Edward Henry Howard of Norfolk † |  | Cardinal, Cardinal-Bishop of Frascati | 
| 15 Feb | 57.4 | Died | Ignacy Giedrojć † | Coadjutor Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania | 
| 53.0 | Ordained Bishop | Ignacy Ludwik Pawłowski † | Titular Bishop of Megara | Archbishop of Mohilev, Belarus | 
| 18 Feb | 73.5 | Died | Giovanni Francesco Marazzani Visconti † | Cardinal, Priest of the Roman Curia - Other | 
| 19 Feb |  | Born | Johannes Fidelis Battaglia † |  | Bishop Emeritus of Chur, Switzerland | 
| 72.2 | Died | Jean-Baptiste-François-Nicolas Millaux † | Bishop of Nevers, France | 
| 24 Feb | 55.8 | Ordained Bishop | Ignacio Ribes Mayor † | Bishop of Calahorra y La Calzada, Spain | Archbishop of Burgos, Spain | 
| 1 Mar |  | Born | Anton von Thoma † |  | Archbishop of München und Freising {Munich}, Germany | 
| 3 Mar | 42.6 | Succeeded | Peter Augustine Baines, O.S.B. † | Vicar Apostolic of Western District, England, Great Britain | 
| 71.9 | Died | Peter Bernardine Collingridge, O.F.M. Rec. † | Vicar Apostolic of Western District, England, Great Britain | 
| 7 Mar | 67.6 | Died | Giuseppe Emilio Sommariva † | Bishop of Modena (e Nonantola), Italy | 
| 8 Mar | 66.1 | Ordained Bishop | Jaime Fort y Puig † | Bishop of Barbastro, Spain | 
| 9 Mar |  | Born | Antonio Ibáñez y Galiano † |  | Bishop of Teruel (-Albarracín), Spain | 
| 10 Mar |  | Born | Giuseppe Apollonio † |  | Bishop of Treviso, Italy | 
| 12 Mar |  | Born | Juan de Dios Bosque † |  | Bishop of La Paz, Bolivia | 
| 14 Mar |  | Born | Pierre-Hector Coullié (Couillié) † |  | Cardinal, Archbishop of Lyon (-Vienne), France | 
| 24.6 | Ordained Priest | Antonio Dalena † | Priest | Bishop of Monopoli, Italy | 
| 24.6 | Ordained Priest | Johann Theodor Laurent † | Priest of Liège, Belgium | Vicar Apostolic Emeritus of Luxembourg | 
| 58.4 | Selected | Mateusz Lipski † | Bishop of Minsk, Belarus | 
| 24.1 | Ordained Priest | Joseph-François-Clet Peschoud † | Priest | Bishop of Cahors, France | 
| 28.1 | Ordained Priest | Louis Amadeus Rappe † | Priest of Arras, France | Bishop Emeritus of Cleveland, Ohio, USA | 
| 24 Mar |  | Born | Ercole Vincento Boffi † |  | Bishop of Bagnoregio (Bagnorea), Italy | 
| 16.0 | Professed | Mariano Cuartero y Medina, O.P. † | Member of Order of Friars Preachers | Bishop of Jaro o Santa Elisabetta, Philippines | 
| 25 Mar | 46.3 | Installed | Giuseppe Grasser † | Bishop of Verona, Italy | 
| 43.4 | Ordained Bishop | Daniel McDonnell † | Titular Bishop of Olympus (Olimpus) | Vicar Apostolic of Trinidad, Trinidad and Tobago, Antilles | 
| 26 Mar | 61.0 | Selected | Godehard Joseph Osthaus † | Bishop of Hildesheim, Germany | 
| 30 Mar |  | Born | Luigi Pallotti † |  | Cardinal, Prefect of the Roman Curia - Other | 
| 31 Mar | 78.5 | Appointed | Giuseppe Andrea Albani † | Secretary of State | Cardinal, Librarian of the Vatican Library | 
| 67.3 | Elected | Francesco Saverio Maria Felice Castiglioni † | Pope (Roma {Rome}, Italy) | 
| 2 Apr | 87.5 | Died | Sébastien-Michel Amelot † | Bishop Emeritus of Vannes, France | 
| 3 Apr | 75.7 | Died | Roch-Etienne de Vichy † | Bishop of Autun, France | 
| 4 Apr | 23.4 | Ordained Priest | Lodovico Maria (dei Conti) Besi † | Priest | Vicar Apostolic Emeritus of Shantung {Scian-Ton} (Chan-tong), China | 
| 70.1 | Appointed | Pietro Caprano † | Cardinal, Prefect of the Congregation of the Index | 
| 24.1 | Ordained Priest | José Escolano y Fenoi † | Priest | Bishop of Jaén, Spain | 
| 28.6 | Ordained Deacon | Angelo Francesco Ramazzotti † | Deacon | Patriarch of Venezia {Venice}, Italy | 
| 22.9 | Ordained Priest | Domenico Ventura † | Priest | Archbishop of Amalfi, Italy | 
| 23.6 | Ordained Priest | Valentino Vignone † | Priest of Boiano, Italy | Bishop of Diano-Teggiano, Italy | 
| 5 Apr | 67.3 | Installed | Francesco Saverio Maria Felice Castiglioni † | Pope (Roma {Rome}, Italy) | 
| 10 Apr | 53.5 | Selected | Michele Bombini † | Bishop of Cassano all’Jonio, Italy | 
| 54.3 | Selected | Luigi Francesco Paolo Maria Bovio, O.S.B. † | Bishop of Melfi e Rapolla, Italy | 
| 64.6 | Selected | Bernhard Galura † | Bishop of Brixen {Bressanone}, Italy | 
| 11 Apr | 62.0 | Selected | Juan Nepomuceno Gómez Durán † | Bishop of Málaga, Spain | 
| 13 Apr | 53.2 | Died | Lazzaro Vladagni Bianchi † | Bishop of Sapë, Albania | 
| 15 Apr |  | Born | Tullio Sericci † |  | Bishop of Comacchio, Italy | 
| 18 Apr | 27.1 | Ordained Priest | Giuseppe Cardoni † | Priest | Bishop Emeritus of Recanati e Loreto, Italy | 
|  | Born | Giovanni Pietro Natoli † |  | Bishop of Lipari, Italy | 
| 19 Apr | 23.6 | Ordained Deacon | Ludwik Bartłomiej Brynk † | Deacon | Apostolic Administrator of Lutsk, Zhytomyr, and Kamyanets-Podilskyi (Łuck, Zytomierz, and Kamienec), Ukraine | 
| 25.9 | Ordained Priest | Paul Cullen † | Priest | Cardinal, Archbishop of Dublin, Ireland | 
| 20 Apr | 65.9 | Died | José Antonio Joaquín Pérez Martínez y Robles † | Bishop of Tlaxcala (Puebla de los Angeles), México | 
| 30.6 | Ordained Priest | Jacobus Gerardus Schepers, C.Ss.R. † | Priest of Congregation of the Most Holy Redeemer | Vicar Apostolic of Dutch Guyana-Suriname, Antilles | 
| 21 Apr | 23.6 | Ordained Priest | Ludwik Bartłomiej Brynk † | Priest | Apostolic Administrator of Lutsk, Zhytomyr, and Kamyanets-Podilskyi (Łuck, Zytomierz, and Kamienec), Ukraine | 
| 30.3 | Selected | [Yosyf (Józef) Semashko (Siemaszko)] † | Auxiliary Bishop of Polotsk (Połock)-Vitebsk (ROC), Belarus | Archbishop | 
| 22 Apr | 64.9 | Selected | Pedro Rodriguez de Miranda, O. de M. † | Bishop of Jaca, Spain | 
| 65.5 | Died | Francesco Felice Tiberi, C.O. † | Bishop of Valva e Sulmona, Italy | 
| 23 Apr |  | Born | Jorge Montes Solar † |  | Auxiliary Bishop of Santiago de Chile | 
| 26 Apr | 55.5 | Ordained Bishop | José Asensio Ocón y Toledo † | Bishop of Palencia, Spain | Bishop of Teruel, Spain | 
| 54.1 | Selected | José Talayero Royo, O.P. † | Bishop of Albarracin, Spain | 
| 27 Apr | 40.3 | Selected | Philippe-Marie-Thérèse-Guy Carron † | Bishop of Le Mans, France | 
| 31.7 | Selected | Bénigne-Urbain-Jean-Marie du Trousset d’Héricourt † | Bishop of Autun, France | 
| 67.7 | Selected | Louis-Charles-Jean-Baptiste Michel † | Bishop of Fréjus, France | 
| 30 Apr | 43.3 | Succeeded | James Browne † | Bishop of Kilmore, Ireland | 
| 88.3 | Died | Fargal O’Reilly † | Bishop of Kilmore, Ireland |