| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 21.7 | Ordained Priest | Gregorio (Michael) Ata (Atta) † | Priest | Archbishop of Homs (-Hama-Jabrud) (Melkite Greek), Syria |
| 45.1 | Died | Giovanni Battista Bagnasco † | Auxiliary Bishop of Palermo, Italy |
| 24.2 | Professed | Joseph (François-de-Paul) Baudichon, SS.CC. † | Member of Congregation of the Sacred Hearts of Jesus and Mary | Vicar Apostolic Emeritus of Marquesas Islands {Isole Marchesi}, French Polynesia, Pacific (Oceania) |
| Ordained Bishop | Elias Chahwann † | Bishop | Bishop of Mardin (Syrian), Turkey |
| 22.8 | Professed | Eugène-Jean-Claude-Joseph Desflèches, M.E.P. † | Member of La Société des Missions Etrangères | Vicar Apostolic Emeritus of Eastern Szechwan {Se-Ciuen Orientale}, China |
| 28.2 | Professed | Ildephonse-René Dordillon, SS.CC. † | Member of Congregation of the Sacred Hearts of Jesus and Mary | Vicar Apostolic of Marquesas Islands {Isole Marchesi}, French Polynesia, Pacific (Oceania) |
| 28.8 | Ordained Priest | Jean Baptiste Epalle, S.M. † | Priest of Lyon (-Vienne), France | Vicar Apostolic of Melanesia, Pacific (Oceania) |
| Born | Thomas Raymond Hyland, O.P. † | | Coadjutor Archbishop of Port of Spain, Trinidad and Tobago, Antilles |
| 70.1 | Died | Pietro India † | Titular Bishop of Myrina |
| Appointed | Grégoire Issa Mahfouz † | Archbishop of Mossul (Syrian), Iraq |
| 43.0 | Appointed | Basile Kfoury † | Patriarchal Vicar of Egypt and Sudan (Melkite Greek) |
| 17.2 | Professed | Eugène Amable Jean Claude Lachat, C.Pp.S. † | Member of Society of Precious Blood | Bishop Emeritus of Basel, Switzerland |
| 30.8 | Entered | Utto (Georg) Lang, O.S.B. † | Priest of Order of Saint Benedict | President Emeritus |
| Born | Théodore Messaieh (Msayeh) † | | Archbishop of Kerkūk (Chaldean), Iraq |
| 24.9 | Ordained Priest | Alexandre-Hippolyte-Xavier Monnet, C.S.Sp. † | Priest of Congregation of the Holy Spirit | Vicar Apostolic of Madagascar, Madagascar |
| 63.1 | Died | Gregorio Muccioli † | Titular Bishop of Agathopolis |
| Born | Jacques-Michel Naamo † | | Patriarchal Vicar of Baghdad (Chaldean), Iraq |
| 23.0 | Ordained Deacon | Julián Ochoa Campos † | Deacon of Arequipa, Peru | Bishop Emeritus of Cuzco, Peru |
| 23.0 | Ordained Priest | Julián Ochoa Campos † | Priest of Arequipa, Peru | Bishop Emeritus of Cuzco, Peru |
| 29.0 | Ordained Priest | Giuseppe Pecci, S.J. † | Priest of Society of Jesus | Cardinal, Prefect Emeritus of the Congregation for Studies |
| 22.8 | Ordained Priest | Leandro Rodríguez de la Gala y Enríquez † | Priest | Bishop of Yucatán (Mérida), México |
| Appointed | Macaire Samman † | Bishop | Bishop Emeritus |
| 64.7 | Resigned | Carlo Emmanuelle Sardagna de Hohenstein † | Bishop of Cremona, Italy | Bishop Emeritus |
| 35.8 | Appointed | Marie-Laurent Trioche † | Apostolic Delegate to Mesopotamia, Kurdistan, and Lesser Armenia, Iraq | Archbishop of Baghdad, Iraq |
| 22.8 | Ordained Deacon | William Vaughan † | Deacon of Western District, England, Great Britain | Bishop of Plymouth, England, Great Britain |
| 1 Jan | 73.7 | Died | Manuel Fraile García † | Bishop of Sigüenza, Spain |
| Born | Jean Hazera † | | Bishop of Digne, France |
| 25.4 | Ordained Priest | Colin Francis MacKinnon † | Priest | Bishop Emeritus of Arichat, Nova Scotia, Canada |
| 66.7 | Selected | Pietro Ignazio Marolda, C.Ss.R. † | Bishop of Pozzuoli, Italy |
| 59.0 | Selected | Angelo Maria Scanzano † | Bishop of Castellammare di Stabia, Italy |
| 2 Jan | | Born | John Hutchinson, O.E.S.A. † | | Vicar Apostolic of Cooktown, Australia |
| 8 Jan | 52.9 | Ordained Bishop | Pawel Straszyński † | Bishop of Sejny o Sejna o Augustów, Poland |
| 10 Jan | | Appointed | Benito Fernández, O.F.M. † | Vicar Apostolic of Giamaica o Jamaica, Antilles |
| 12 Jan | 45.0 | Selected | László Barkóczy † | Bishop of Székesfehérvár (Albareale), Hungary |
| 15 Jan | 67.1 | Installed | Stanisław Henryk Lubicz Choromański † | Archbishop of Warszawa {Warsaw}, Poland |
| 55.9 | Ordained Bishop | Walenty Maciej Tomaszewski † | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 18 Jan | 23.2 | Ordained Priest | Tommaso Gallucci † | Priest | Bishop of Recanati e Loreto, Italy |
| 23.5 | Ordained Deacon | Pedro José Tordoya Montoya † | Deacon | Bishop Emeritus of Cuzco, Peru |
| 20 Jan | | Born | Hugues-Madelain Bottero, M.E.P. † | | Bishop of Kumbakonam, India |
| 23 Jan | 45.0 | Died | William Abraham † | Bishop of Waterford and Lismore, Ireland |
| 58.2 | Died | Joaquín Briz, O.P. † | Bishop of Segovia, Spain |
| 26 Jan | | Born | Magloire-Désiré Barthet, C.S.Sp. † | | Vicar Apostolic Emeritus of Senegambia, Senegal |
| 29 Jan | 63.4 | Ordained Bishop | Ignaz Anton Demeter † | Archbishop of Freiburg im Breisgau, Germany |
| Feb | 24.0 | Ordained Priest | Fabián Sebastián Arenzana y Magdaleno † | Priest | Bishop of Calahorra y La Calzada, Spain |
| 5 Feb | 24.1 | Ordained Priest | Michael Angelus Jacobi (Jacopi), O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Archbishop of Agra, India |
| 6 Feb | 84.2 | Died | Domenico Russo † | Bishop of Ariano, Italy |
| 10 Feb | | Born | Eugenio Carlo Valussi † | | Bishop of Trento, Italy |
| 12 Feb | 70.7 | Ordained Bishop | Pietro Giovanni Zanardi † | Bishop of Guastalla, Italy |
| 14 Feb | | Born | Tommaso Montefusco † | | Bishop of Oria, Italy |
| 15 Feb | | Born | Théophile Antoine Kandelaft (Qandalift) † | | Patriarchal Vicar of Beirut {Bairut} (Syrian), Lebanon |
| 17 Feb | 23.0 | Ordained Deacon | Zigmund Szuppán † | Deacon | Priest |
| 18 Feb | 52.0 | Selected | Lorenzo Giovanni Battista Biale † | Bishop of Ventimiglia, Italy |
| 23.5 | Ordained Priest | Paul-Ambroise Bigandet, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Southern Burma {Birmania Meridionale}, Myanmar |
| 25.1 | Ordained Priest | James Brown † | Priest of Midland District, England, Great Britain | Bishop of Shrewsbury, England, Great Britain |
| 20 Feb | 72.7 | Died | János Marich † | Priest |
| 21 Feb | 39.1 | Appointed | Bernard Donald McDonald † | Bishop of Charlottetown, Prince Edward Island, Canada |
| 43.1 | Appointed | John McLaughlin † | Coadjutor Bishop of Derry, Ireland | Bishop |
| 43.1 | Appointed | John McLaughlin † | Titular Bishop of Auzia | Bishop of Derry, Ireland |
| 34.9 | Appointed | Richard Patrick Smith † | Titular Bishop of Agnus | Archbishop of Port of Spain, Trinidad and Tobago, Antilles |
| 22 Feb | 53.7 | Installed | Johann Peter von Richarz † | Bishop of Augsburg, Germany |
| 23.0 | Ordained Priest | Zigmund Szuppán † | Priest |
| 28 Feb | | Appointed | Niccola Candoni † | Titular Archbishop of Iconium | Archbishop of Naxos, Greece |
| 30.7 | Appointed | Etienne (Stefano) Missir † | Titular Bishop of Irenopolis in Cilicia |
| 34.9 | Appointed | Richard Patrick Smith † | Coadjutor Vicar Apostolic of Trinidad, Trinidad and Tobago, Antilles | Archbishop of Port of Spain, Trinidad and Tobago, Antilles |
| 5 Mar | | Born | Jean-Benoît Chouzy, M.E.P. † | | Prefect of Kuamsi (Kwangsi, Guangxi), China |
| 56.7 | Installed | Giovanni Tommaso Neuschel † | Bishop of Borgo San Donnino, Italy | Bishop Emeritus of Parma, Italy |
| 10 Mar | 37.3 | Appointed | Ignace Bourget † | Coadjutor Bishop of Montréal, Québec, Canada | Bishop Emeritus |
| 37.3 | Appointed | Ignace Bourget † | Titular Bishop of Telmissus | Bishop Emeritus of Montréal, Québec, Canada |
| 11 Mar | 22.6 | Ordained Priest | Joseph Sadoc Alemany y Conill, O.P. † | Priest of Order of Friars Preachers | Archbishop Emeritus of San Francisco, California, USA |
| 24.4 | Ordained Priest | Luigi Biscioni Amadori † | Priest of Pisa, Italy | Bishop Emeritus of Sansepolcro (Borgo San Sepolcro), Italy |
| 22.5 | Ordained Priest | Camillo de’ Marchesi Bisleti † | Priest | Bishop of Tarquinia e Civitavecchia, Italy |
| Born | Enrico Grazioli † | | Bishop Emeritus of Guastalla, Italy |
| 12 Mar | | Ordained Bishop | Niccola Candoni † | Titular Archbishop of Iconium | Archbishop of Naxos, Greece |
| 23.3 | Ordained Deacon | Carlos María Colina y Rubio † | Deacon | Bishop of Tlaxcala (Puebla de los Angeles), México |
| 23.2 | Ordained Deacon | Francisco de Paula Verea y González † | Deacon | Bishop of Tlaxcala (Puebla de los Angeles), México |
| 30.8 | Ordained Bishop | Etienne (Stefano) Missir † | Titular Bishop of Irenopolis in Cilicia |
| 13 Mar | | Born | Leandro Arrúe Agudo, O.A.R. † | | Bishop of Jaro o Santa Elisabetta, Philippines |
| 90.1 | Died | Jean-Baptiste Marie Scipion Ruffo (Roux) de Bonneval † | Bishop Emeritus of Senez, France |
| 36.6 | Installed | Karl August von Reisach † | Bishop of Eichstätt, Germany | Cardinal, Archbishop Emeritus of München und Freising {Munich}, Germany |
| 14 Mar | 35.2 | Appointed | Iacobus (Yacoub) Eliani (Haliani) † | Archbishop of Damas (Syrian), Syria |
| 36.0 | Appointed | Marie-Laurent Trioche † | Bishop of Baghdad, Iraq | Archbishop of Baghdad, Iraq |
| 18 Mar | 76.2 | Died | Aleksandar Alagović † | Bishop of Zagreb (Agram), Croatia |
| 77.9 | Died | Dominique-Georges-Frédéric Dufour de Pradt † | Archbishop Emeritus of Mechelen, Belgium |
| 21 Mar | | Born | Roberto Papiri (Pageri) † | | Archbishop of Fermo, Italy |
| 40.5 | Selected | Vasyl Popovics † | Bishop of Mukachevo (Munkács) (Ruthenian), Ukraine |
| 25 Mar | | Born | Francesco Bacchini † | | Bishop of Terni, Italy |
| 27 Mar | 23.3 | Ordained Priest | Carlos María Colina y Rubio † | Priest | Bishop of Tlaxcala (Puebla de los Angeles), México |
| 23.2 | Ordained Priest | Francisco de Paula Verea y González † | Priest | Bishop of Tlaxcala (Puebla de los Angeles), México |
| 86.5 | Died | Giovanni Giacomo Antonio Gaetano Fraschina, O.F.M. Cap. † | Titular Archbishop of Corinthus |
| 86.9 | Died | Manuel Pacheco de Rèsende † | Bishop of Aveiro, Portugal |
| 28 Mar | 18.5 | Professed | Leopoldo Zelli Jacobuzi, O.S.B. † | Member of Order of Saint Benedict | Abbot of San Paolo fuori le Mura, Italy |
| 29 Mar | 34.7 | Selected | Francesco Bruni, C.M. † | Bishop of Ugento, Italy |
| 42.6 | Selected | Giovanni Costantino † | Bishop of Molfetta, Giovinazzo e Terlizzi, Italy |
| 30 Mar | 69.7 | Selected | Antonio Cinque † | Bishop of Anglona-Tursi, Italy |
| 54.6 | Died | Luigi Paolo Maria Pochettini di Serravalle † | Bishop of Ivrea, Italy |
| 51.2 | Selected | Benedetto Terenzio † | Bishop of Trivento, Italy |
| Apr | 24.0 | Ordained Priest | Giuseppe Bugliari † | Priest | Titular Bishop of Dausara |
| 1 Apr | 53.2 | Resigned | Giovanni Antonio Gianotti (Giannotti) † | Archbishop of Sassari, Italy | Bishop of Saluzzo, Italy |
| Born | Angelo Maria Meraviglia Mantegazza † | | Auxiliary Bishop of Milano {Milan}, Italy |
| 75.6 | Died | Julián Sanz Palanco † | Bishop of Segorbe, Spain |
| 2 Apr | 38.9 | Ordained Bishop | Modesto (Luigi Eugenio) Contratto, O.F.M. Cap. † | Bishop of Acqui, Italy |
| 3 Apr | | Born | Benedetto Maria della Camera † | | Titular Bishop of Thermopylae |
| 84.3 | Died | Ivan Škakoc (Scacoz) † | Bishop of Hvar (Lesina), Croatia |
| 7 Apr | | Born | Joseph Gregory Dwenger, C.Pp.S. † | | Bishop of Fort Wayne, Indiana, USA |
| 8 Apr | 23.1 | Ordained Priest | Joaquim Gonçalves de Azevedo † | Priest | Archbishop of São Salvador da Bahia, Brazil |
| 10 Apr | | Born | George Vincent King, O.P. † | | Coadjutor Archbishop of Port of Spain, Trinidad and Tobago, Antilles |
| 64.2 | Died | Thomas Weld † | Cardinal, Coadjutor Bishop Emeritus of Kingston, Ontario, Canada |
| 11 Apr | | Appointed | Niccola Candoni † | Coadjutor Archbishop of Naxos, Greece | Archbishop |
| 12 Apr | 35.1 | Appointed | William Clancy † | Vicar Apostolic of British Guiana, Guyana, Antilles | Vicar Apostolic Emeritus |
| 15 Apr | | Born | John Edward Cuthbert Hedley, O.S.B. † | | Bishop of Newport, Wales, Great Britain |
| 17 Apr | 22.9 | Ordained Deacon | Ludwik Feliks Zdanowicz † | Deacon | Auxiliary Bishop of Vilnius, Lithuania |
| 19 Apr | | Born | Crescencio Carrillo y Ancona † | | Bishop of Yucatán (Mérida), México |
| 20 Apr | | Born | Theodore Dalhoff, S.J. † | | Archbishop of Bombay, India |
| Born | Giovanni Maria Diamare † | | Bishop of Sessa Aurunca, Italy |
| 35.1 | Selected | Frédéric-Gabriel-Marie-François de Marguerye † | Bishop of Saint-Flour, France | Bishop Emeritus of Autun (-Châlon-sur-Saône-Mâcon), France |
| 54.7 | Selected | St. Eugène-Charles-Joseph de Mazenod, O.M.I. † | Bishop of Marseille, France |
| 26 Apr | 53.2 | Selected | Giovanni Antonio Gianotti (Giannotti) † | Archbishop (Personal Title) of Saluzzo, Italy | Bishop |
| 73.6 | Selected | Andreas Stanislaus von Hattynski (Hatten) † | Bishop of Warmia (Ermland), Poland |
| 65.3 | Died | Gabriele Papa † | Archbishop of Sorrento, Italy |
| 27 Apr | 50.1 | Resigned | Carlo Giuseppe Benedetto Mercy d’Argenteau † | Apostolic Nuncio to Bavaria | Apostolic Nuncio |
| 22.5 | Ordained Priest | Imre Szabó † | Priest of Veszprém, Hungary | Bishop of Szombathely, Hungary |
| 29 Apr | | Born | Wilhelm Blazek † | | Auxiliary Bishop of Olomouc, Czechia |
| 88.0 | Retired | Fortuné-Charles de Mazenod † | Bishop of Marseille, France | Bishop Emeritus |