| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 30.1 | Professed | Henri-Joseph Bulté, S.J. † | Priest of Society of Jesus | Vicar Apostolic of Southeastern Chi-Li {Ce-Li Meridio-Orientale}, China |
| 66.8 | Resigned | Luigi Clementi † | Apostolic Delegate to Central America | Bishop of Rimini, Italy |
| 66.8 | Resigned | Luigi Clementi † | Apostolic Delegate to México | Bishop of Rimini, Italy |
| 20.6 | Ordained Priest | Krikor Govrik, C.A.M. † | Priest of Congregazione Mechitarista di Venezia | Abbot |
| 43.0 | Resigned | Giovanni Monetti † | Apostolic Delegate to Haiti | Bishop of Cervia, Italy |
| 27.3 | Ordained Priest | John Keys O’Doherty † | Priest | Bishop of Derry, Ireland |
| 25.4 | Ordained Priest | Nicolaus Maria Pagani, S.J. † | Priest of Society of Jesus | Bishop of Mangalore, India |
| 15.8 | Professed | Martin Poell, O.F.M. † | Member of Order of Friars Minor | Vicar Apostolic of Southern Shansi {Scian-Si Meridionale}, China |
| 20.7 | Professed | Jean-Baptiste-Hippolyte Sarthou, C.M. † | Member of Congregation of the Mission | Vicar Apostolic of Northern Chi-Li {Ce-Li Settentrionale} o Pe-Kin, China |
| 23.7 | Ordained Priest | Paschal Tosi, S.J. † | Priest of Rimini, Italy | Prefect Emeritus of Alaska, USA |
| 22.6 | Ordained Priest | Michael Verdon † | Priest | Bishop of Dunedin, New Zealand |
| 51.7 | Died | Luigi Zannini † | Bishop Emeritus of Veroli, Italy |
| 1 Jan | | Born | Antonin Guillermain, M. Afr. † | Lyon, France | Vicar Apostolic of Northern Victoria Nyanza {Victoria-Nyanza Settentrionale}, Uganda |
| 52.6 | Died | Miguel José Pratmans Llambés † | Bishop of Tortosa, Spain |
| 4 Jan | 71.6 | Died | John Briggs † | Bishop Emeritus of Beverley, England, Great Britain |
| 6 Jan | 52.4 | Installed | Bartolomé Manuel Herrera Vélez † | Bishop of Arequipa, Peru |
| 9 Jan | | Born | Bonifatius (Magnus) Fleschutz, O.S.B. † | Reicholzried, Germany | Prefect of Southern Zanguebar {Zanguebar Meridionale}, Tanzania |
| 13 Jan | 53.8 | Died | Vicente Horcos y San Martín, O.S.B. † | Bishop of Osma, Spain |
| 15 Jan | 46.3 | Appointed | Venceslao Soić † | Coadjutor Bishop of Senj (-Modruš), Croatia | Bishop Emeritus |
| 17 Jan | | Born | Angelo Antonio Fiorini, O.F.M. Cap. † | Campiglia Marittima | Bishop of Pontremoli, Italy |
| Born | Natale Serafino † | Genova | Bishop Emeritus of Chiavari, Italy |
| 18 Jan | | Born | Dimitrios I (Joseph) Cadi (Kadi) † | Damas | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria |
| 21 Jan | | Born | Luis Enrique Izquierdo Vargas † | Santiago | Bishop of Concepción, Chile |
| 23 Jan | | Born | Angelo Simonetti † | Cornacchiaia | Bishop of Pescia, Italy |
| 25 Jan | 39.1 | 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 † | Napoli | Bishop Emeritus of Castellammare di Stabia, Italy |
| 27 Jan | 25.0 | Ordained Priest | Manuel Santiago Medina y Bañon † | Priest of Lima, Peru | Bishop of Trujillo, Peru |
| 28 Jan | 75.2 | Died | Filippo Saverio Grimaldi † | Bishop Emeritus of San Severino (Marche), Italy |
| 30 Jan | 62.5 | Died | Louis-Antoine de Salinis † | Archbishop of Auch, France |
| 31 Jan | 54.1 | 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 | 45.1 | 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 | 53.7 | Died | Francesco Agostini † | Bishop of Nocera Umbra, Italy |
| Born | Thomas Francis Hickey † | Rochester | Bishop Emeritus of Rochester, New York, USA |
| 5 Feb | 53.8 | Selected | Manoel Joaquim da Silveira † | Archbishop of São Salvador da Bahia, Brazil |
| 53.9 | Selected | Benedetto Riccabona de Reinchenfels † | Bishop of Trento, Italy |
| 6 Feb | 43.3 | Selected | Charles-Théodore Baudry † | Bishop of Périgueux (-Sarlat), France |
| 9 Feb | 50.3 | Selected | João Crisóstomo de Amorim Pessoa, O.F.M. † | Archbishop of Goa, India | Archbishop Emeritus of Braga, Portugal |
| 10 Feb | 59.2 | Died | Gabriel della Genga Sermattei † | Cardinal, Prefect of the Roman Curia - Other |
| 13 Feb | | Born | Miguel Claro Vásquez † | Santiago | Auxiliary Bishop of Santiago de Chile |
| 15 Feb | 61.0 | Appointed | Jean Marie (John Mary) Odin, C.M. † | Archbishop of New Orleans, Louisiana, USA |
| 16 Feb | 69.4 | Died | Antônio Joaquim de Mello † | Bishop of São Paulo, Brazil |
| 19 Feb | | Born | Heinrich Hähling von Lanzenauer † | Koblenz | Auxiliary Bishop of Paderborn, Germany |
| 20 Feb | | Born | Felipe Rincón González † | Chiquinquirá | Archbishop of Caracas, Santiago de Venezuela |
| 21 Feb | 65.7 | 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 | 27.0 | Ordained Priest | Antonio María Cascajares y Azara † | Priest of Zaragoza, Spain | Cardinal, Archbishop |
| 23.8 | Ordained Priest | Victor-Joseph Doutreloux † | Priest | Bishop of Liège, Belgium |
| 23.4 | Ordained Priest | Celestino del Frate † | Priest | Archbishop of Camerino, Italy |
| 22.9 | Ordained Priest | Giocondo (Matthaeus) de Nittis, O.F.M. † | Priest of Order of Friars Minor | Bishop of Castellaneta, Italy |
| 3 Mar | | Born | Thomas Francis Lillis † | Lexington, MO | Bishop of Kansas City, Missouri, USA |
| 4 Mar | | Born | Silviano Carrillo y Cárdenas † | Pátzcuaro | Bishop of Sinaloa, México |
| 81.1 | Retired | Gaspare Bernardo Pianetti † | Bishop of Viterbo e Tuscania, Italy | Cardinal, Bishop Emeritus |
| 8 Mar | 60.5 | Selected | François-Augustin Delamare † | Archbishop of Auch, France |
| 9 Mar | 75.7 | Installed | Nicolás Aldazor, O.F.M. † | Bishop of San Juan de Cuyo, Argentina |
| 10 Mar | 33.9 | Ordained Bishop | Dario Bucciarelli, O.F.M. † | Bishop of Pult, Albania | Archbishop of Skopje, Macedonia |
| 68.9 | Died | Giovanni Sabatini (Sabatino) † | Bishop of Valva e Sulmona, Italy |
| 16 Mar | 22.7 | Ordained Priest | Francesco Maria Imparati, O.F.M. † | Priest of Order of Friars Minor | Archbishop of Acerenza e Matera, Italy |
| 17 Mar | | Born | Antoine Coudert, O.M.I. † | Manglieu, France | Archbishop of Colombo, Sri Lanka |
| 22.8 | Ordained Priest | Adolphus Edwin Medlycott † | Priest | Vicar Apostolic Emeritus of Trichur (Syro-Malabarese), India |
| 18 Mar | 55.3 | Confirmed | Mariano Benito Barrio y Fernández † | Cardinal, Archbishop of Valencia, Spain |
| 43.4 | 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 | Charles-Marie Magnin † | Bishop of Annecy, France |
| 47.5 | Confirmed | Domingos Quirino de Souza † | Bishop of Goiás, Brazil |
| 59.9 | Confirmed | Emmanuel-Jules Ravinet † | Bishop of Troyes, France | Bishop Emeritus |
| 48.6 | Confirmed | Antonio da Trindade de Vasconcellos Pereira de Melo † | Bishop of Beja, Portugal | Bishop of Lamego, Portugal |
| 54.0 | Appointed | Adrian Wlodarski † | Auxiliary Bishop of Wrocław (Breslau), Poland |
| 54.0 | Appointed | Adrian Wlodarski † | Titular Bishop of Ibora | Auxiliary Bishop of Wrocław (Breslau), Poland |
| 19 Mar | | Born | Joseph MacRory † | Ballygawley | Cardinal, Archbishop of Armagh, Ireland |
| 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 † | La Serena | Auxiliary Bishop of La Serena, Chile |
| Born | Manuel Vieira de Matos † | Peso da Regoa | Archbishop of Braga, Portugal |
| 22 Mar | 50.4 | Confirmed | João Crisóstomo de Amorim Pessoa, O.F.M. † | Archbishop of Goa, India | Archbishop Emeritus of Braga, Portugal |
| Born | Charles Joseph Heitz † | Mulhouse, France | Prefect Emeritus of Iles Saint-Pierre et Miquelon |
| 54.0 | Confirmed | Benedetto Riccabona de Reinchenfels † | Bishop of Trento, Italy |
| 23 Mar | | Born | Francis Alphonsus Bourne † | Clapham | 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 |
| 78.0 | Died | Pedro José Zarandia y Endara † | Bishop of Huesca, Spain |
| 29 Mar | 80.9 | Died | Ioan Lemeni † | Bishop Emeritus of Făgăraş (Romanian), Romania |
| 68.2 | 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 Pontifical Ecclesiastical Academy, Roman Curia |
| 25.6 | 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 | 38.8 | Ordained Bishop | Leone Korkoruni † | Archbishop (Personal Title) of Melitene (Malatia) (Armenian), Syria | Bishop |
| 67.8 | Died | Emanuele Marongiu Maccioni † | Bishop Emeritus of Galtelli-Nuoro (Galtelly Nori), Italy |
| 49.5 | Ordained Bishop | Buenaventura Rizo Patrón, O.F.M. † | Bishop of Salta, Argentina |
| 12 Apr | | Born | Daniel Mary Gorman † | Wyoming, IA | 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 |
| 16 Apr | | Appointed | Sebastianus Francovich, O.F.M. † | Vicar Apostolic of Bosnia, Croatia |
| Appointed | Sebastianus Francovich, O.F.M. † | Titular Bishop of Sion | Vicar Apostolic of Bosnia, Croatia |
| 17 Apr | 78.4 | Died | Josip Kuković † | Bishop Emeritus of Bosna (Djakovo) et Srijem, Croatia | Bishop |
| Born | Anton Malecki † | St. Petersburg | Apostolic Administrator Emeritus of Foreign Diocese |
| 18 Apr | 60.2 | Died | José Aranguren, O.A.R. † | Archbishop of Manila, Philippines |
| 20 Apr | 56.9 | Selected | Francisco Landeira y Sevilla † | Bishop of Cartagena (en España) |
| 21 Apr | 24.4 | Ordained Priest | Abraham Brownrigg, S.S.S. † | Priest of Congregation of the Blessed Sacrament | Bishop of Ossory, Ireland |
| Ordained Bishop | Sebastianus Francovich, O.F.M. † | Titular Bishop of Sion | Vicar Apostolic of Bosnia, Croatia |
| 30.7 | Ordained Bishop | Antônio de Macedo Costa † | Bishop of Belém do Pará, Brazil | Archbishop of São Salvador da Bahia, Brazil |
| 22 Apr | 26.3 | Ordained Deacon | Antonio 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 † | Napoli | Bishop Emeritus of Castellammare di Stabia, Italy |