| Date | Age | Event | Bishop | Title | Current Title |
| 1 Mar |
| Born | Francis Folorunsho Clement Alonge | | Bishop Emeritus of Ondo, Nigeria |
| 64.1 | Died | Nikolaus Bares † | Bishop of Berlin, Germany |
|
| Born | Luis Gabriel Romero Franco | | Bishop Emeritus of Facatativá, Colombia |
| 2 Mar | 74.6 | Appointed | Edward Joseph Hanna † | Titular Archbishop of Gortyna | Archbishop Emeritus of San Francisco, California, USA |
| 74.6 | Retired | Edward Joseph Hanna † | Archbishop of San Francisco, California, USA | Archbishop Emeritus |
| 51.1 | Succeeded | John Joseph Mitty † | Archbishop of San Francisco, California, USA |
| 3 Mar | 51.2 | Ordained Bishop | Leandro Bautista Astelarra † | Bishop of Bahía Blanca, Argentina |
|
| Born | Mario Busquets Jordá | | Prelate Emeritus of Chuquibamba, Peru |
| 44.1 | Ordained Bishop | Zenobio Lorenzo Guilland † | Archbishop of Paraná, Argentina |
| Born | Albino Mamede Cleto † | | Bishop Emeritus of Coimbra, Portugal |
| 5 Mar | | Born | Tobias Wunganayi Chiginya † | | Bishop of Gweru, Zimbabwe |
| Born | Francis Xavier Osamu Mizobe, S.D.B. † | | Bishop Emeritus of Takamatsu, Japan |
| 6 Mar | 74.2 | Died | Jean-Baptiste-Marie Budes de Guébriant, M.E.P. † | Superior General of La Société des Missions Etrangères |
| 7 Mar |
| Born | Giuseppe Anfossi | | Bishop Emeritus of Aosta, Italy |
| 55.3 | Died | Bl. Leontiy Leonid Fedorov, M.S.U. † | Apostolic Exarch of Russia (Russian) |
| 39.9 | Installed | Francisco Vicentín † | Bishop of Corrientes, Argentina | Archbishop Emeritus of Corrientes, Argentina |
| 9 Mar | 51.5 | Appointed | William Richard Griffin † | Auxiliary Bishop of La Crosse, Wisconsin, USA |
| 51.5 | Appointed | William Richard Griffin † | Titular Bishop of Lydda | Auxiliary Bishop of La Crosse, Wisconsin, USA |
| 58.4 | Appointed | Joseph Francis Rummel † | Archbishop of New Orleans, Louisiana, USA |
| 10 Mar |
| Born | Kévork (Georges) Khazoumian, I.C.P.B. | | Coadjutor Archbishop Emeritus of Istanbul (Armenian), Turkey |
| 49.7 | Installed | Giacomo Rosso † | Bishop of Cuneo, Italy | Bishop Emeritus |
| 11 Mar | 44.3 | Appointed | Mario Civelli, P.I.M.E. † | Vicar Apostolic of Hanchung [Hanzhong] (Hanchungfu), China | Bishop of Jixian [Weihwei], China |
| 44.3 | Appointed | Mario Civelli, P.I.M.E. † | Titular Bishop of Tabbora | Bishop of Jixian [Weihwei], China |
| 58.2 | Appointed | Dominique Maria Hồ Ngọc Cẩn † | Coadjutor Bishop of Bùi Chu, Viet Nam | Vicar Apostolic |
| 58.2 | Appointed | Dominique Maria Hồ Ngọc Cẩn † | Titular Bishop of Zenobias | Vicar Apostolic of Bùi Chu, Viet Nam |
| 38.0 | Installed | Enrique José Mühn, S.V.D. † | Bishop of Jujuy, Argentina | Bishop Emeritus |
| 49.6 | Appointed | Louis Parisot, S.M.A. † | Vicar Apostolic of Dahomey, Benin | Archbishop Emeritus of Cotonou, Benin |
| 49.6 | Appointed | Louis Parisot, S.M.A. † | Titular Bishop of Tacapae | Archbishop Emeritus of Cotonou, Benin |
| 12 Mar | | Born | Paul John Marx, M.S.C. † | | Bishop Emeritus of Kerema, Papua New Guinea |
| 13 Mar | 57.8 | Died | Francis John Vaughan † | Bishop of Menevia, Wales, Great Britain |
| 15 Mar |
| Born | Salim Sayegh | | Auxiliary Bishop Emeritus of Jerusalem {Gerusalemme}, Palestine |
| 16 Mar | | Born | João José Burke, O.F.M. † | | Bishop of Miracema do Tocantins, Brazil |
| Born | Lorenzo Chiarinelli † | | Bishop Emeritus of Viterbo, Italy |
|
| Born | Xavier Gilles de Maupeou d’Ableiges | | Bishop Emeritus of Viana, Maranhão, Brazil |
| 13.6 | Entered | Lucas Luis Dónnelly Carey, O. de M. † | Member of Order of Our Lady of Mercy | Prelate Emeritus of Deán Funes, Argentina |
| 25.3 | Ordained Priest | Cornelis Heiligers, S.M.M. † | Priest of Missionaries of the Company of Mary | Superior General Emeritus |
| 28.0 | Ordained Deacon | Robert Marie-Joseph François de Provenchères † | Deacon of Paris, France | Bishop Emeritus of Créteil, France |
| 17 Mar | 46.1 | Ordained Bishop | Antonio Caggiano † | Bishop of Rosario, Argentina | Cardinal, Archbishop Emeritus of Buenos Aires, Argentina |
| 32.3 | Ordained Priest | Mathew Chen Muchen (Chen Mushun) † | Priest | Bishop of Zhaotong [Chaotung], China |
| 39.1 | Ordained Bishop | Norman Thomas Gilroy † | Bishop of Port Augusta, Australia | Cardinal, Archbishop Emeritus of Sydney, Australia |
| 57.9 | Ordained Bishop | José Aníbal Verdaguer y Corominas † | Bishop of Mendoza, Argentina |
| 18 Mar | | Born | Antonio Bello † | | Bishop of Molfetta-Ruvo-Giovinazzo-Terlizzi, Italy |
| 58.2 | Installed | Nicolás Esandi, S.D.B. † | Bishop of Viedma, Argentina |
| Born | Antonios Naguib † | | Cardinal, Patriarch Emeritus of Alexandria {Alessandria} (Coptic), Egypt |
| 57.9 | Installed | José Aníbal Verdaguer y Corominas † | Bishop of Mendoza, Argentina |
| 70.2 | Died | Antonino Zecchini, S.J. † | Apostolic Nuncio to Latvia |
| 19 Mar | | Born | Youssef Mohsen Béchara † | | Archbishop Emeritus of Antélias (Maronite), Lebanon |
| 44.2 | Ordained Bishop | Ralph Hubert Dignan † | Bishop of Sault Sainte Marie, Ontario, Canada |
| 48.3 | Ordained Bishop | Giuseppe Mazzoli † | Titular Archbishop of Germa in Hellesponto | Apostolic Delegate to Bulgaria |
| 44.9 | Ordained Bishop | Angelo Soracco † | Bishop of Fossano, Italy |
| 21 Mar | 52.9 | Installed | Leopoldo Buteler † | Bishop of Río Cuarto, Argentina |
| 25.4 | Ordained Priest | Petro Arikata Kobayashi † | Priest of Osaka, Japan | Bishop Emeritus of Sendai, Japan |
| 74.7 | Died | Adam Senger † | Auxiliary Bishop Emeritus of Bamberg, Germany |
| 23 Mar | 51.2 | Installed | Leandro Bautista Astelarra † | Bishop of Bahía Blanca, Argentina |
| 90.3 | Died | Robert Browne † | Bishop of Cloyne, Ireland |
| 66.1 | Died | Nicolás González y Pérez, C.M.F. † | Vicar Apostolic of Fernando Poo, Equatorial Guinea |
| 44.2 | Installed | Zenobio Lorenzo Guilland † | Archbishop of Paraná, Argentina |
| 64.4 | Succeeded | James J. Roche † | Bishop of Cloyne, Ireland |
| 24 Mar | 48.2 | Ordained Bishop | Joseph Oscar Julien, M. Afr. † | Titular Bishop of Choba | Vicar Apostolic of Nyassa, Malawi |
| 25 Mar | 47.6 | Appointed | Louis Mathias, S.D.B. † | Archbishop of Madras, India | Archbishop of Madras and Mylapore (Meliapor), India |
| 44.1 | Ordained Bishop | Paul Bergan Misner, C.M. † | Titular Bishop of Myrica | Vicar Apostolic of Yükiang [Yujiang], China |
| 27 Mar |
| Born | Ovidio Poletto | | Bishop Emeritus of Concordia-Pordenone, Italy |
| 29 Mar | 61.4 | Died | Jules-Joseph Moury, S.M.A. † | Vicar Apostolic of Costa d’Avorio |
| 18.0 | Entered | Ramón Salas Valdés, S.J. † | Member of Society of Jesus | Bishop Emeritus of Arica, Chile |
| 30 Mar | 64.1 | Died | Ludwig Maria Hugo † | Bishop of Mainz, Germany |
| 31 Mar | 44.9 | Ordained Bishop | Froilán Ferreira Reinafé † | Bishop of La Rioja, Argentina |
| 23.8 | Ordained Priest | Manuel Pedro (Antonio) Rodríguez Rozas † | Priest of San Cristobal de la Habana, Cuba | Bishop Emeritus of Pinar del Rio, Cuba |
| Born | Ignace Baguibassa Sambar-Talkena † | | Bishop Emeritus of Kara, Togo |
| 25.5 | Ordained Priest | James Cornelius van Miltenburg, O.F.M. † | Priest of Order of Friars Minor | Bishop of Hyderabad in Pakistan |
| 1 Apr | 55.7 | Appointed | Giovanni Capobianco † | Bishop of Urbania e Sant’Angelo in Vado, Italy |
| 69.6 | Appointed | Arthur Hinsley † | Cardinal, Archbishop of Westminster, England, Great Britain |
| 79.0 | Resigned | Achille Locatelli † | Chamberlain (Camerlengo) of the College of Cardinals | Cardinal, Chamberlain Emeritus |
| 59.0 | Appointed | Eugenio Maria Giuseppe Giovanni Pacelli † | Chamberlain (Camerlengo) of the Apostolic Chamber | Pope (Roma {Rome}, Italy) |
| 53.4 | Appointed | Domenico Petroni † | Bishop of Melfi e Rapolla, Italy | Bishop Emeritus |
| 53.4 | Appointed | Domenico Petroni † | Bishop of Venosa, Italy | Bishop Emeritus of Melfi e Rapolla, Italy |
| 45.7 | Appointed | Mario Toccabelli † | Archbishop of Siena, Italy |
| 2 Apr | 44.3 | Installed | Ralph Hubert Dignan † | Bishop of Sault Sainte Marie, Ontario, Canada |
| 62.8 | Died | Pasquale Gioia, C.R.S. † | Bishop of Molfetta, Giovinazzo e Terlizzi, Italy |
| Born | Anthony Xu Jiwei † | | Bishop Emeritus of Linhai [Taichow], China |
| 4 Apr | | Born | Robert Lucien Chapuis, M.E.P. † | |
|
| Born | Hans-Georg Koitz | | Auxiliary Bishop Emeritus of Hildesheim, Germany |
| 5 Apr | 79.0 | Died | Achille Locatelli † | Cardinal, Chamberlain Emeritus of the College of Cardinals |
| 76.4 | Died | Giuseppe Scarlata † | Bishop of Muro Lucano, Italy |
| 6 Apr | 23.5 | Ordained Priest | Emilio Cinense y Abera † | Priest | Archbishop of San Fernando, Philippines |
| 27.9 | Ordained Priest | Justin Diraviam † | Priest | Archbishop Emeritus of Madurai, India |
| 23.0 | Ordained Priest | Paolo Ghizzoni † | Priest of Piacenza, Italy | Bishop of San Miniato, Italy |
| 24.3 | Ordained Priest | Anton Herre † | Priest of Rottenburg, Germany | Auxiliary Bishop Emeritus of Rottenburg-Stuttgart, Germany |
| 7 Apr | 50.9 | Ordained Bishop | Justo Antonino de Echeguren y Aldama † | Bishop of Oviedo, Spain |
| 8 Apr | 52.2 | Appointed | Jean-Marie Aubin, S.M. † | Vicar Apostolic of Southern Solomon Islands, Solomon Islands | Vicar Apostolic Emeritus |
| 52.2 | Appointed | Jean-Marie Aubin, S.M. † | Titular Bishop of Antiphellus | Vicar Apostolic Emeritus of Southern Solomon Islands, Solomon Islands |
| 57.6 | Appointed | Léon Klerlein, C.S.Sp. † | Titular Bishop of Voncaria | Vicar Apostolic Emeritus of Bethlehem, South Africa |
| 57.6 | Appointed | Léon Klerlein, C.S.Sp. † | Vicar Apostolic of Kroonstad, South Africa | Vicar Apostolic Emeritus of Bethlehem, South Africa |
| 46.8 | Appointed | Pietro Moretti, O.F.M. † | Prefect of Tongzhou [Tungchow], China |
| 56.5 | Appointed | Damian Tcheng † | Prefect of Zhaotong [Chaotung], China |
| 9 Apr | 25.2 | Ordained Priest | Elie Farah † | Priest | Archbishop Emeritus of Cyprus (Maronite) |
| 10 Apr | | Born | José Augusto Martins Fernandes Pedreira † | | Bishop Emeritus of Viana do Castelo, Portugal |
| 12 Apr | 31.0 | Ordained Priest | Joseph Meng Zi Wen (Meng Jieren; Mong Zi Wen) † | Priest of Nanning [Nanning], China | Bishop of Nanning [Nanning], China |
| 86.2 | Died | Fidel Olivas Escudero † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 13 Apr | 65.4 | Appointed | James Dey † | Vicar Apostolic of Great Britain, Military |
| 65.4 | Appointed | James Dey † | Titular Bishop of Sebastopolis in Armenia | Vicar Apostolic of Great Britain, Military |
| 44.9 | Installed | Froilán Ferreira Reinafé † | Bishop of La Rioja, Argentina |
| Born | Michael Joseph Kaniecki, S.J. † | | Bishop of Fairbanks, Alaska, USA |
|
| Born | Peter Antony Moran | | Bishop Emeritus of Aberdeen, Scotland, Great Britain |
| 68.9 | Died | John Joseph O’Gorman, C.S.Sp. † | Vicar Apostolic Emeritus of Sierra Leone |
| 14 Apr | 27.2 | Ordained Priest | Alois Bürke, S.M.B. † | Priest of Society of Bethlehem Mission Immensee | Prefect Emeritus of Qiqihar [Tsitsihar], China |
| 16 Apr | 68.7 | Died | Giacinto Tonizza, O.F.M. † | Vicar Apostolic of Tripolitana, Libya |
| 17 Apr | | Born | Michael Patrick Olatunji Fagun † | | Bishop Emeritus of Ekiti, Nigeria |
| Born | Medardo Luis Luzardo Romero † | | Archbishop Emeritus of Ciudad Bolívar, Venezuela |
| 18 Apr | | Born | István Ács, O.S.P.P.E. † | | Auxiliary Bishop of Eger, Hungary |
| 19 Apr |
| Born | Justin Francis Rigali | | Cardinal, Archbishop Emeritus of Philadelphia, Pennsylvania, USA |
| 20 Apr | 24.7 | Ordained Priest | Alberto Frederico Etges † | Priest | Bishop Emeritus of Santa Cruz do Sul, Rio Grande do Sul, Brazil |
| Born | Tomás Osvaldo González Morales, S.D.B. † | | Bishop Emeritus of Punta Arenas, Chile |
| 25.5 | Ordained Priest | Henri Alfred Bernardin Hoffmann, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Djibouti |
| 21 Apr | 26.1 | Ordained Priest | Leonardo José Rodriguez Ballón, O.F.M. † | Priest of Order of Friars Minor | Archbishop Emeritus of Arequipa, Peru |
| 23 Apr | 63.4 | Died | Lorenzo Schioppa † | Apostolic Internuncio to Netherlands |
| 25 Apr |
| Born | John Kevin Boland | | Bishop Emeritus of Savannah, Georgia, USA |
| 39.2 | Ordained Bishop | François-Emile-Marie Cléret de Langavant, C.S.Sp. † | Bishop of Saint-Denis-de-La Réunion | Bishop Emeritus |
| 58.0 | Appointed | Joseph Laurent Philippe, S.C.I. † | Coadjutor Bishop of Luxembourg | Bishop |
| 58.0 | Appointed | Joseph Laurent Philippe, S.C.I. † | Titular Bishop of Tinum | Bishop of Luxembourg |
| 26 Apr | | Born | Gerardo Pierro † | | Archbishop Emeritus of Salerno-Campagna-Acerno, Italy |
| 28 Apr | 22.0 | Ordained Priest | Otàvio Barbosa Aguiar † | Priest | Bishop Emeritus of Palmeira dos Índios, Alagoas, Brazil |
| 47.6 | Ordained Bishop | Assuero Teofano Bassi, S.X. † | Titular Bishop of Tabae | Bishop of Luoyang [Loyang], China |
| 34.3 | Ordained Bishop | José Gaspar d’Afonseca e Silva † | Titular Bishop of Barca | Archbishop of São Paulo, Brazil |
| 27.2 | Ordained Priest | Peter Kelleter, C.S.Sp. † | Priest of Congregation of the Holy Spirit | Bishop Emeritus of Bethlehem, South Africa |
| 22.0 | Ordained Priest | João José da Mota e Albuquerque † | Priest | Archbishop Emeritus of São Luís do Maranhão, Brazil |
| 40.6 | Ordained Bishop | Alfredo Silva Santiago † | Bishop of Temuco, Chile | Archbishop Emeritus of Concepción (Santissima Concezione), Chile |
| 38.6 | Ordained Bishop | Juan Subercaseaux Errázuriz † | Bishop of Linares, Chile | Archbishop of La Serena, Chile |
| 29 Apr | 69.6 | Installed | Arthur Hinsley † | Cardinal, Archbishop of Westminster, England, Great Britain |
| 30 Apr | 56.6 | Ordained Bishop | Maurice Jean Baptiste Félix Marie Amoudru, O.P. † | Titular Bishop of Pyrgos | Apostolic Administrator of Leningrad, Russian Federation |
|
| Born | António Montes Moreira, O.F.M. | | Bishop Emeritus of Bragança-Miranda, Portugal |