| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 66.7 | Resigned | Luigi Clementi † | Apostolic Delegate to Central America | Bishop of Rimini, Italy |
| 66.7 | Resigned | Luigi Clementi † | Apostolic Delegate to México | Bishop of Rimini, Italy |
| 23.1 | Ordained Priest | Nicolas Donnelly † | Priest of Dublin, Ireland | Auxiliary Bishop |
| 53.3 | Resigned | Pietro Giannelli † | Apostolic Nuncio to Sicily, Italy | Cardinal, President of the Roman Curia - Other |
| 101.1 | Died | Gaétan Giunta † | Titular Archbishop of Amida |
| 20.6 | Ordained Priest | Gregor [Krikor] Govrighian [Govrik], C.M.Vd. † | Priest of Congregazione Mechitarista di Vienna | Abbot General |
| 75.0 | Died | Etienne Holassian † | Bishop of Adana (Armenian), Turkey |
| 43.0 | Resigned | Giovanni Monetti † | Apostolic Delegate to Haiti | Bishop of Cervia, Italy |
| 25.3 | Ordained Priest | Nicolaus Maria Pagani, S.J. † | Priest of Society of Jesus | Bishop of Mangalore, India |
| 15.7 | Professed | Martin Poell, O.F.M. Ref. † | Member of Order of Reformed Friars Minor | Vicar Apostolic of Southern Shansi {Scian-Si Meridionale}, China |
| 22.5 | Ordained Priest | Michael Verdon † | Priest | Bishop of Dunedin, New Zealand |
| 51.6 | Died | Luigi Zannini † | Bishop Emeritus of Veroli, Italy |
| 1 Jan | | Born | Antonin Guillermain, M. Afr. † | | Vicar Apostolic of Northern Victoria Nyanza {Victoria-Nyanza Settentrionale}, Uganda |
| 52.5 | Died | Miguel José Pratmans Llambés † | Bishop of Tortosa, Spain |
| 4 Jan | 72.6 | Died | John Briggs † | Bishop Emeritus of Beverley, England, Great Britain |
| 6 Jan | 52.3 | Installed | Bartolomé Manuel Herrera Vélez † | Bishop of Arequipa, Peru |
| 9 Jan | | Born | Bonifatius (Magnus) Fleschutz, O.S.B. † | | Prefect of Southern Zanguebar {Zanguebar Meridionale}, Tanzania |
| 13 Jan | 53.7 | Died | Vicente Horcos y San Martín, O.S.B. † | Bishop of Osma, Spain |
| 15 Jan | 46.3 | Appointed | Vjenceslav Šoić † | Coadjutor Bishop of Senj (-Modruš), Croatia | Bishop Emeritus |
| 17 Jan | | Born | Angelo Antonio Fiorini, O.F.M. Cap. † | | Bishop of Pontremoli, Italy |
| Born | Natale Serafino † | | Bishop Emeritus of Chiavari, Italy |
| 18 Jan | | Born | Dimitrios I (Joseph) Cadi (Kadi) † | | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria |
| 21 Jan | | Born | Luis Enrique Izquierdo Vargas † | | Bishop of Concepción, Chile |
| 23 Jan | | Born | Angelo Simonetti † | | Bishop of Pescia, Italy |
| 25 Jan | 39.0 | Ordained Bishop | Thomas Grimley † | Titular Bishop of Antigonea | Vicar Apostolic of Cape of Good Hope, Western District {Capo di Buona Speranza, Distretto Occidentale}, South Africa |
| 26 Jan | | Born | Uberto Maria Fiodo † | | Bishop Emeritus of Castellammare di Stabia, Italy |
| 27 Jan | 24.9 | Ordained Priest | Manuel Santiago Medina y Bañon † | Priest of Lima, Peru | Bishop of Trujillo, Peru |
| 28 Jan | 75.1 | Died | Filippo Saverio Grimaldi † | Bishop Emeritus of San Severino (Marche), Italy |
| 30 Jan | 62.4 | Died | Louis-Antoine de Salinis † | Archbishop of Auch, France |
| 31 Jan | 54.0 | Died | Franciscus Jacobus van Vree † | Bishop of Haarlem, Netherlands |
| 48.4 | Selected | Antonio da Trindade de Vasconcellos Pereira de Melo † | Bishop of Beja, Portugal | Bishop of Lamego, Portugal |
| 2 Feb | 43.2 | Appointed | Grégoire (Krikor) Balitian † | Bishop of Alep (Armenian), Syria |
| 43.2 | Ordained Bishop | Grégoire (Krikor) Balitian † | Bishop of Alep (Armenian), Syria |
| 3 Feb | 45.6 | Ordained Bishop | Eugene O’Connell † | Titular Bishop of Flaviopolis | Bishop Emeritus of Grass Valley, California, USA |
| 4 Feb | 53.6 | Died | Francesco Agostini † | Bishop of Nocera Umbra, Italy |
| Born | Thomas Francis Hickey † | | Bishop Emeritus of Rochester, New York, USA |
| 5 Feb | 53.8 | Selected | Manoel Joaquim da Silveira † | Archbishop of São Salvador da Bahia, Brazil |
| 53.8 | Selected | Benedetto Riccabona de Reinchenfels † | Bishop of Trento, Italy |
| 6 Feb | 43.2 | Selected | Charles-Théodore Baudry † | Bishop of Périgueux (-Sarlat), France |
| 9 Feb | 50.3 | Selected | João Crisóstomo de Amorim Pessoa, O.F.M. Ref. † | Archbishop of Goa, India | Archbishop Emeritus of Braga, Portugal |
| 10 Feb | 59.1 | Died | Gabriel della Genga Sermattei † | Cardinal, Prefect of the Congregation of Bishops and Regulars |
| 13 Feb | | Born | Miguel Claro Vásquez † | | Auxiliary Bishop of Santiago de Chile |
| 15 Feb | 60.9 | Appointed | Jean-Marie (John Mary) Odin, C.M. † | Archbishop of New Orleans, Louisiana, USA |
| 16 Feb | 69.3 | Died | Antônio Joaquim de Mello † | Bishop of São Paulo, Brazil |
| 19 Feb | | Born | Heinrich Hähling von Lanzenauer † | | Auxiliary Bishop of Paderborn, Germany |
| 20 Feb | | Born | Felipe Rincón González † | | Archbishop of Caracas, Santiago de Venezuela |
| 21 Feb | 65.6 | Died | Giovanni Brunelli † | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 36.4 | Selected | Luiz da Conceição Saraiva, O.S.B. † | Bishop of São Luís do Maranhão, Brazil |
| 23 Feb | 26.9 | Ordained Priest | Antonio María Cascajares y Azara † | Priest of Zaragoza, Spain | Cardinal, Archbishop |
| 23.7 | Ordained Priest | Victor-Joseph Doutreloux † | Priest of Liège, Belgium | Bishop |
| 23.4 | Ordained Priest | Celestino del Frate † | Priest of Albano, Italy | Archbishop of Camerino, Italy |
| 22.8 | Ordained Priest | Giocondo (Matthaeus) de Nittis, O.F.M. Ref. † | Priest of Order of Reformed Friars Minor | Bishop of Castellaneta, Italy |
| 3 Mar | | Born | Thomas Francis Lillis † | | Bishop of Kansas City, Missouri, USA |
| 4 Mar | 81.0 | Retired | Gaspare Bernardo Pianetti † | Bishop of Viterbo e Tuscania, Italy | Cardinal, Bishop Emeritus |
| 8 Mar | 60.4 | Selected | François-Augustin Delamare † | Archbishop of Auch, France |
| 9 Mar | 75.7 | Installed | Nicolás Aldazor, O.F.M. Obs. † | Bishop of San Juan de Cuyo, Argentina |
| 10 Mar | 33.9 | Ordained Bishop | Dario Bucciarelli, O.F.M. Obs. † | Bishop of Pult (Pulati), Albania | Archbishop of Skopje, North Macedonia |
| Born | Pedro Prat Escalas, O.E.S.A. † | | Prefect Emeritus of San León del Amazonas, Peru |
| 68.9 | Died | Giovanni Sabatino (Sabatini) † | Bishop of Valva e Sulmona, Italy |
| 16 Mar | 50.2 | Resigned | Adamo Adami, O.S.B. † | Abbot of Order of Saint Benedict | Minister General |
| 22.6 | Ordained Priest | Francesco Maria Imparati, O.F.M. Obs. † | Priest of Order of Observant Friars Minor | Archbishop of Acerenza e Matera, Italy |
| 17 Mar | | Born | Antoine Coudert, O.M.I. † | | Archbishop of Colombo, Sri Lanka |
| 22.8 | Ordained Priest | Adolphus Edwin Medlycott † | Priest | Vicar Apostolic Emeritus of Trichur (Syro-Malabar), India |
| 18 Mar | 55.3 | Confirmed | Mariano Benito Barrio y Fernández † | Cardinal, Archbishop of Valencia, Spain |
| 43.3 | Confirmed | Charles-Théodore Baudry † | Bishop of Périgueux (-Sarlat), France |
| 54.8 | Appointed | Gaetano Bedini † | Archbishop (Personal Title) of Viterbo e Tuscania, Italy | Cardinal, Bishop |
| 57.9 | Confirmed | Jean-Joseph Christophe † | Bishop of Soissons (-Laon), France |
| 53.9 | Confirmed | Manoel Joaquim da Silveira † | Archbishop of São Salvador da Bahia, Brazil |
| 60.5 | Confirmed | François-Augustin Delamare † | Archbishop of Auch, France |
| 45.0 | Confirmed | Théodore-Augustin Forcade, M.E.P. † | Bishop of Nevers, France | Archbishop of Aix (-Arles-Embrun), France |
| 58.3 | Confirmed | Claude-Marie Magnin † | Bishop of Annecy, France |
| 47.4 | Confirmed | Domingos Quirino de Souza † | Bishop of Goiás, Brazil |
| 59.9 | Confirmed | Emmanuel-Jules Ravinet † | Bishop of Troyes, France | Bishop Emeritus |
| 48.5 | Confirmed | Antonio da Trindade de Vasconcellos Pereira de Melo † | Bishop of Beja, Portugal | Bishop of Lamego, Portugal |
| 54.0 | Appointed | Adrian Włodarski † | Auxiliary Bishop of Wrocław (Breslau), Poland |
| 54.0 | Appointed | Adrian Włodarski † | Titular Bishop of Ibora | Auxiliary Bishop of Wrocław (Breslau), Poland |
| 19 Mar | | Born | Joseph MacRory † | | Cardinal, Archbishop of Armagh, Ireland |
| Born | Edward Parry, S.J. † | | Prefect of Zambese, Zimbabwe |
| 21 Mar | 64.8 | Died | Clément Bonnand, M.E.P. † | Vicar Apostolic of Pondicherry, India |
| 55.0 | Succeeded | Joseph-Isidore Godelle, M.E.P. † | Vicar Apostolic of Pondicherry, India |
| Born | Eduardo Solar Vicuña † | | Auxiliary Bishop of La Serena, Chile |
| Born | Manuel Vieira de Matos † | | Archbishop of Braga, Portugal |
| 22 Mar | 50.4 | Confirmed | João Crisóstomo de Amorim Pessoa, O.F.M. Ref. † | Archbishop of Goa, India | Archbishop Emeritus of Braga, Portugal |
| Born | Charles Joseph Heitz † | | Prefect Emeritus of Iles Saint-Pierre et Miquelon |
| 53.9 | Confirmed | Benedetto Riccabona de Reinchenfels † | Bishop of Trento, Italy |
| 23 Mar | | Born | Francis Alphonsus Bourne † | | Cardinal, Archbishop of Westminster, England, Great Britain |
| 24 Mar | 24.5 | Ordained Priest | Remigio Guido Barbieri, O.S.B. † | Priest of Order of Saint Benedict | Vicar Apostolic of Gibraltar |
| 60.9 | Appointed | Sebastijan Francović, O.F.M. Obs. † | Vicar Apostolic of Bosnia (Bosna, Diacovar, Diakovar), Croatia |
| 60.9 | Appointed | Sebastijan Francović, O.F.M. Obs. † | Titular Bishop of Sion | Vicar Apostolic of Bosnia (Bosna, Diacovar, Diakovar), Croatia |
| 77.9 | Died | Pedro José Zarandia y Endara † | Bishop of Huesca, Spain |
| 29 Mar | 80.9 | Died | Ioan Lemeni † | Bishop Emeritus of Făgăraş (Romanian), Romania |
| 68.1 | Appointed | József Lonovics † | Titular Archbishop of Amasea | Archbishop of Kalocsa, Hungary |
| 30 Mar | 23.9 | Ordained Priest | Giovanni Maria Diamare † | Priest | Bishop of Sessa Aurunca, Italy |
| 23.1 | Ordained Priest | Augusto Guidi † | Priest | President Emeritus of the Pontifical Ecclesiastical Academy |
| 25.5 | Ordained Priest | Bartolomeo Mirra † | Priest | Bishop of Poggio Mirteto, Italy |
| 24.1 | Ordained Priest | Tommaso Montefusco † | Priest | Bishop of Oria, Italy |
| 74.8 | Died | Felice Regano (Regnano) † | Bishop of Catania, Italy |
| 6 Apr | 34.3 | Selected | Charles-Amable de la Tour d’Auvergne Lauraguais † | Coadjutor Archbishop of Bourges, France | Archbishop |
| 7 Apr | 38.7 | Ordained Bishop | Léon Korkoruni † | Bishop of Melitene (Malatia) (Armenian), Syria |
| 67.7 | Died | Emanuele Marongiu Maccioni † | Bishop Emeritus of Galtelli-Nuoro (Galtelly Nori), Italy |
| 49.5 | Ordained Bishop | Buenaventura Rizo Patrón, O.F.M. Obs. † | Bishop of Salta, Argentina |
| 12 Apr | | Born | Daniel Mary Gorman † | | Bishop of Boise City, Idaho, USA |
| 14 Apr | 44.1 | Ordained Bishop | Luiz Antônio dos Santos † | Bishop of Fortaleza (Ceará), Brazil | Archbishop Emeritus of São Salvador da Bahia, Brazil |
| 75.2 | Ordained Bishop | Josif Sokolski † | Archbishop | Archbishop of Bulgarian United Church (Constantinople) (Bulgarian) |
| 17 Apr | 78.3 | Died | Josip Kuković † | Bishop Emeritus of Bosna (Djakovo) et Srijem, Croatia |
| Born | Anton Malecki † | | Apostolic Administrator Emeritus of Leningrad, Russian Federation |
| 18 Apr | 60.1 | Died | José Julián Aranguren, O.A.R. † | Archbishop of Manila, Philippines |
| 19 Apr | 75.2 | Appointed | Josif Sokolski † | Archbishop of Bulgarian United Church (Constantinople) (Bulgarian) |
| 20 Apr | 56.9 | Selected | Francisco Landeira y Sevilla † | Bishop of Cartagena (en España) |
| 70.8 | Died | Manuel José Pardio Lizama † | Auxiliary Bishop of Yucatán (Mérida), México |
| 21 Apr | 24.3 | Ordained Priest | Abraham Brownrigg, S.S.S. † | Priest of Congregation of the Blessed Sacrament | Bishop of Ossory, Ireland |
| 61.0 | Ordained Bishop | Sebastijan Francović, O.F.M. Obs. † | Titular Bishop of Sion | Vicar Apostolic of Bosnia (Bosna, Diacovar, Diakovar), Croatia |
| 30.7 | Ordained Bishop | Antônio de Macedo Costa † | Bishop of Belém do Pará, Brazil | Archbishop of São Salvador da Bahia, Brazil |
| 22 Apr | 26.2 | Ordained Deacon | Anton Baranowski † | Deacon | Bishop of Sejny o Sejna o Augustów, Poland |
| 26 Apr | 53.3 | Appointed | Gregoriius Dabanly (Dabanlian) † | Bishop of Ispahan {Esfáan} (Armenian), Iran |
| 27 Apr | 77.3 | Died | Gennaro Saladino † | Bishop of Isernia e Venafro, Italy |
| 30 Apr | | Born | Pasquale Ragosta † | | Bishop Emeritus of Castellammare di Stabia, Italy |