| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 32.0 | Ordained Priest | Ildefonso Cañedo y Vigil † | Priest | Archbishop of Burgos, Spain |
| Born | Michel Cattoula (Kattula) † | Telkef | Archbishop of Seert (Chaldean), Turkey |
| Born | Laurent Thomas Choa (Sho'a) † | Telkef | Archbishop of Kerkūk (Chaldean), Iraq |
| 22.1 | Ordained Priest | Stanisław Kostka Choromański † | Priest | Archbishop of Warszawa {Warsaw}, Poland |
| 61.2 | Died | Kryspin Cieszkowski † | Auxiliary Bishop of Lviv, Ukraine |
| 76.9 | Died | Giambattista Donati † | Bishop of Cervia, Italy |
| 26.6 | Ordained Priest | Antonio Fernando Echanove Zaldívar † | Priest | Archbishop of Tarragona, Spain |
| Appointed | José Alejandro de Egües y Villamar † | Bishop of Santa Marta, Colombia |
| 54.3 | Died | José Ramón de Estrada y Orgas † | Bishop of Santa Cruz de la Sierra, Bolivia |
| Born | Michael Anthony Fleming, O.F.M. † | Carrick-on-Suir, Ireland | Bishop of Newfoundland, Canada |
| Died | Anselmo José de Fraga y Márquez † | Bishop of Santa Marta, Colombia |
| 37.8 | Ordained Priest | José González de Cándamo y Cauniego † | Priest | Auxiliary Bishop of San Cristobal de la Habana, Cuba |
| 27.2 | Ordained Priest | Rafael Lasso de la Vega † | Priest | Bishop of Quito, Ecuador |
| 59.7 | Died | Ladislaus Luzenszky † | Auxiliary Bishop of Esztergom, Hungary |
| 24.6 | Ordained Priest | Augustin-Louis de Montblanc † | Priest | Archbishop of Tours, France |
| 23.7 | Ordained Priest | Daniel Murray † | Priest | Archbishop of Dublin, Ireland |
| 74.5 | Died | Paolino Pace † | Bishop of Vico Equense, Italy |
| Ordained Priest | Giovanni Portelli † | Priest | Bishop of Lipari, Italy |
| 24.0 | Ordained Priest | Adam Michal Prażmowski † | Priest | Bishop of Płock, Poland |
| 16.0 | Professed | Tomás Sala, O.P. † | Member of Order of Friars Preachers | Coadjutor Vicar Apostolic of Fo-Kien, China |
| 23.2 | Ordained Priest | Juan José Tejada Sáenz, O. de M. † | Priest of Order of Our Lady of Mercy | Bishop of Solsona, Spain |
| 19.0 | Professed | Bonifaz Kaspar von Urban † | Member of Order of St. Augustine | Archbishop of Bamberg, Germany |
| 23.2 | Ordained Priest | Teofil von Wolicki † | Priest of Poznań, Poland | Archbishop of Gniezno e Poznań, Poland |
| 52.0 | Resigned | Antonio Felice Zondadari † | Apostolic Nuncio to Belgium | Cardinal, Archbishop of Siena, Italy |
| 4 Jan | | Born | Miguel Salvá y Munar † | Algaida | Bishop of Mallorca y Ibiza, Spain |
| 8 Jan | 78.9 | Died | Gregorio Lazzari, O.S.B. † | Archbishop of Dubrovnik (Ragusa), Croatia |
| 9 Jan | | Born | László Barkóczy † | Imregh | Bishop of Székesfehérvár (Albareale), Hungary |
| 11 Jan | 62.1 | Selected | Giuseppe Domenico Porqueddu † | Bishop of Iglesias, Italy |
| 13 Jan | | Appointed | Adrian Butrymowicz, O.S.B.M. † | Auxiliary Bishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| Appointed | Adrian Butrymowicz, O.S.B.M. † | Titular Bishop of Calama | Auxiliary Bishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 14 Jan | | Born | Jean-Paul-Hilaire-Michel Courvezy, M.E.P. † | Narbonne, France | Vicar Apostolic Emeritus of Malacca-Singapore |
| 18 Jan | 84.9 | Died | Nicola Molinari, O.F.M. Cap. † | Bishop of Bovino, Italy |
| 24 Jan | 76.2 | Died | Anselmo (Nicolò) Cattich, O.F.M. † | Bishop of Trebinje e Mrkan, Bosnia and Herzegovina |
| 1 Feb | | Born | Jacques-Marie-Antoine-Célestin du Pont † | Iglesias, Italy | Cardinal, Archbishop of Bourges, France |
| 9 Feb | | Born | Thomas Cooke † | Pointe-du-Lac | Bishop of Trois Rivières, Québec, Canada |
| 11 Feb | | Born | Daniel-Victor Manglard † | Paris | Bishop of Saint-Dié, France |
| 12 Feb | | Born | Barthélemy Bruguière, M.E.P. † | Raissac d'Aude, France | Vicar Apostolic of Corea |
| 40.0 | Ordained Bishop | John Chisholm † | Titular Bishop of Oreus | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 60.7 | Installed | Franz Philipp von Inzaghi † | Bishop of Gorizia e Gradisca, Italy |
| 67.7 | Ordained Bishop | Juan Antonio de los Tueros † | Archbishop of Burgos, Spain |
| 14 Feb | | Appointed | Vincenzo Sangermano, B. † | Titular Bishop of Auzia |
| 15 Feb | 59.4 | Selected | Giuseppe Corrado Panzini † | Bishop of Ugento, Italy |
| 16 Feb | | Born | Hryhorij Jachimowicz † | Podborze | Archbishop of Lviv (Ukrainian), Ukraine |
| 17 Feb | 46.1 | Appointed | Giovanni Battista di Mandello, O.F.M. † | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 46.1 | Appointed | Giovanni Battista di Mandello, O.F.M. † | Titular Bishop of Croae | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 51.4 | Appointed | Fortunado Pinto † | Bishop of Tricarico, Italy | Archbishop of Salerno (-Acerno), Italy |
| 20 Feb | 53.6 | Appointed | Theodor von Brabeck, O.S.B. † | Bishop of Corvey, Germany | Bishop-Elect |
| 71.2 | Died | Mariano Martí † | Bishop of Caracas, Santiago de Venezuela |
| 27 Feb | 45.8 | Appointed | Francesco Amoroso † | Archbishop of Lanciano, Italy |
| 59.9 | Appointed | Filippo de Aprile † | Bishop of Melfi e Rapolla, Italy |
| 61.7 | Appointed | Giovanni Battista Brancaccio † | Bishop of Ostuni, Italy |
| 72.1 | Appointed | Gaetano Maria Capece, C.R. † | Archbishop (Personal Title) of Pozzuoli, Italy | Bishop |
| 57.2 | Appointed | Vincenzo Maria Castro † | Bishop of Umbriatico (Umbriaticum), Italy | Bishop of Castellaneta, Italy |
| 52.7 | Appointed | Bartolomeo Criscuolo † | Bishop of Lettere (-Gragnano), Italy |
| 62.1 | Appointed | Filippo d’Ambrogio † | Bishop of Caiazzo, Italy |
| 51.9 | Appointed | Giovanni Giuseppe D’Anisi (Dalla Croce) † | Bishop of Gallipoli, Italy |
| 72.6 | Appointed | Gian Leonardo Maria Di Fusco, O.P. † | Bishop of Acerra, Italy |
| 56.6 | Appointed | Ferdinando Crispo Doria † | Bishop of Castellammare di Stabia, Italy |
| 52.0 | Appointed | Carmine Fimiani † | Bishop of Nardò, Italy |
| 63.3 | Appointed | Gennaro Clemente Francone † | Archbishop (Personal Title) of Gaeta, Italy | Bishop of Troia, Italy |
| 62.1 | Appointed | Agostino Gervasio, O.S.A. † | Archbishop of Capua, Italy |
| 63.5 | Appointed | Agostino Gregorio Golino † | Bishop of Trevico, Italy |
| 43.3 | Confirmed | Karl Franz von Lodron † | Bishop of Brixen {Bressanone}, Italy |
| 52.8 | Appointed | Salvatore Maria Lombardi † | Bishop of Andria, Italy |
| 49.2 | Confirmed | Andrea de Lucia † | Bishop of Calvi Risorta, Italy | Bishop of Calvi e Teano, Italy |
| 54.3 | Appointed | Vincenzo Lupoli † | Bishop of Telese o Cerreto Sannita, Italy |
| 64.0 | Appointed | Simone de Magistris, C.O. † | Titular Bishop of Cyrene |
| 58.2 | Appointed | Pietro Mancini † | Bishop of Minervino Murge, Italy |
| 49.9 | Appointed | Giuseppe Marra † | Bishop of Nicotera, Italy |
| 45.4 | Appointed | Silvestro Miccù, O.F.M. † | Bishop of Ravello e Scala, Italy | Archbishop of Amalfi, Italy |
| 47.5 | Appointed | Gaetano Paolo de Miceli, C.P.O. † | Bishop of Alessano, Italy | Archbishop of Rossano, Italy |
| 62.1 | Appointed | Andrea Mirelli, O.S.B. † | Archbishop of Chieti, Italy |
| 50.8 | Appointed | Vincenzo Maria Morelli, C.R. † | Archbishop of Otranto, Italy |
| 47.5 | Appointed | Raffaele Mormile, C.R. † | Archbishop of Cosenza, Italy | Archbishop of Palermo, Italy |
| 70.2 | Appointed | Emanuele Maria Pignone del Carretto, O.S.A. † | Bishop of Sessa Aurunca, Italy |
| 51.7 | Appointed | Paolo Pozzuoli † | Bishop of Sant’Agata de’ Goti, Italy |
| 51.2 | Appointed | Francesco Saverio Saggese † | Bishop of Montepeloso, Italy |
| 51.2 | Appointed | Antonio Siciliani † | Bishop of Aquino e Pontecorvo, Italy |
| 65.2 | Appointed | Paschalis Sifanni † | Titular Bishop of Tium |
| 43.8 | Appointed | Gennaro Maria Guevara Suardo, O.S.B. † | Archbishop of Bari (-Canosa), Italy | Bishop of Aversa, Italy |
| 52.8 | Appointed | Januarius Vincentius Tortora † | Bishop of Fondi (Fundi), Italy |
| 52.0 | Appointed | Gioacchino Vassetta † | Bishop of Castellaneta, Italy |
| 43.0 | Appointed | Nicola Vecchi † | Bishop of Conversano, Italy | Bishop of Teano, Italy |
| 68.6 | Appointed | Francesco Saverio De Vivo † | Archbishop (Personal Title) of Nusco, Italy | Bishop |
| 3 Mar | 59.3 | Appointed | Giovanni Arcamone, C.R. † | Bishop of Lucera, Italy |
| 22.9 | Ordained Priest | José Maria de Araújo, O.S.H. † | Priest of Orden de San Jerónimo | Bishop of Olinda, Brazil |
| 22.2 | Ordained Deacon | Kajetan von Kowalski † | Deacon of Poznań, Poland | Auxiliary Bishop of Gniezno e Poznań, Poland |
| 24.1 | Ordained Priest | Giuseppe Saitta † | Priest | Bishop of Patti, Italy |
| 4 Mar | 45.8 | Ordained Bishop | Francesco Amoroso † | Archbishop of Lanciano, Italy |
| 59.3 | Ordained Bishop | Giovanni Arcamone, C.R. † | Bishop of Lucera, Italy |
| 61.7 | Ordained Bishop | Giovanni Battista Brancaccio † | Bishop of Ostuni, Italy |
| 57.2 | Ordained Bishop | Vincenzo Maria Castro † | Bishop of Umbriatico (Umbriaticum), Italy | Bishop of Castellaneta, Italy |
| 52.8 | Ordained Bishop | Bartolomeo Criscuolo † | Bishop of Lettere (-Gragnano), Italy |
| 62.1 | Ordained Bishop | Filippo d’Ambrogio † | Bishop of Caiazzo, Italy |
| 51.9 | Ordained Bishop | Giovanni Giuseppe D’Anisi (Dalla Croce) † | Bishop of Gallipoli, Italy |
| 72.6 | Ordained Bishop | Gian Leonardo Maria Di Fusco, O.P. † | Bishop of Acerra, Italy |
| 56.6 | Ordained Bishop | Ferdinando Crispo Doria † | Bishop of Castellammare di Stabia, Italy |
| 52.1 | Ordained Bishop | Carmine Fimiani † | Bishop of Nardò, Italy |
| 63.5 | Ordained Bishop | Agostino Gregorio Golino † | Bishop of Trevico, Italy |
| 52.8 | Ordained Bishop | Salvatore Maria Lombardi † | Bishop of Andria, Italy |
| 49.3 | Ordained Bishop | Andrea de Lucia † | Bishop of Calvi Risorta, Italy | Bishop of Calvi e Teano, Italy |
| 54.3 | Ordained Bishop | Vincenzo Lupoli † | Bishop of Telese o Cerreto Sannita, Italy |
| 64.0 | Ordained Bishop | Simone de Magistris, C.O. † | Titular Bishop of Cyrene |
| 58.2 | Ordained Bishop | Pietro Mancini † | Bishop of Minervino Murge, Italy |
| 49.9 | Ordained Bishop | Giuseppe Marra † | Bishop of Nicotera, Italy |
| 45.4 | Ordained Bishop | Silvestro Miccù, O.F.M. † | Bishop of Ravello e Scala, Italy | Archbishop of Amalfi, Italy |
| 47.5 | Ordained Bishop | Gaetano Paolo de Miceli, C.P.O. † | Bishop of Alessano, Italy | Archbishop of Rossano, Italy |
| 62.1 | Ordained Bishop | Andrea Mirelli, O.S.B. † | Archbishop of Chieti, Italy |
| 50.9 | Ordained Bishop | Vincenzo Maria Morelli, C.R. † | Archbishop of Otranto, Italy |
| 47.6 | Ordained Bishop | Raffaele Mormile, C.R. † | Archbishop of Cosenza, Italy | Archbishop of Palermo, Italy |
| 51.5 | Ordained Bishop | Fortunado Pinto † | Bishop of Tricarico, Italy | Archbishop of Salerno (-Acerno), Italy |
| 51.7 | Ordained Bishop | Paolo Pozzuoli † | Bishop of Sant’Agata de’ Goti, Italy |
| 51.3 | Ordained Bishop | Francesco Saverio Saggese † | Bishop of Montepeloso, Italy |
| 51.3 | Ordained Bishop | Antonio Siciliani † | Bishop of Aquino e Pontecorvo, Italy |
| 43.8 | Ordained Bishop | Gennaro Maria Guevara Suardo, O.S.B. † | Archbishop of Bari (-Canosa), Italy | Bishop of Aversa, Italy |
| 52.8 | Ordained Bishop | Januarius Vincentius Tortora † | Bishop of Fondi (Fundi), Italy |
| 52.0 | Ordained Bishop | Gioacchino Vassetta † | Bishop of Castellaneta, Italy |
| 43.1 | Ordained Bishop | Nicola Vecchi † | Bishop of Conversano, Italy | Bishop of Teano, Italy |
| 25.7 | Ordained Priest | Francesco Antonio Visocchi † | Priest | Bishop of Gallipoli, Italy |
| 11 Mar | 25.5 | Ordained Priest | Maurice-Jean-Madeleine de Broglie † | Priest | Bishop of Gent {Ghent, Gand}, Belgium |
| 72.9 | Died | Miguel de Pamplona González Bassecourt, O.F.M. Cap. † | Bishop Emeritus of Arequipa, Peru |
| 12 Mar | 52.4 | Died | Jean-Baptiste-Auguste de Villoutreix de Faye † | Bishop of Oloron (Oloron-Sainte-Marie), France |
| 18 Mar | 65.2 | Ordained Bishop | Paschalis Sifanni † | Titular Bishop of Tium |
| 19 Mar | 66.6 | Died | Raymond de Durfort † | Archbishop of Besançon, France |
| Born | José María Guerra y Rodríguez Correa † | San Francisco de Campeche | Bishop of Yucatán (Mérida), México |
| 70.3 | Ordained Bishop | Emanuele Maria Pignone del Carretto, O.S.A. † | Bishop of Sessa Aurunca, Italy |
| 20 Mar | 46.2 | Resigned | Gerard Teahan (Teaghan) † | Archbishop of Cashel (-Emly), Ireland | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| 22 Mar | | Born | Michele Franchini † | Monte Corvino | Bishop of Nicotera e Tropea, Italy |
| 24 Mar | 26.3 | Ordained Priest | Stanislao Mossa † | Priest | Bishop of Ampurias e Civita, Italy |
| 24.6 | Ordained Priest | Carlo Giuseppe Peda, B. † | Priest of Clerics Regular of St. Paul | Bishop of Assisi, Italy |
| 24.0 | Ordained Priest | Giuseppe Saverio Poli † | Priest | Bishop of Anglona-Tursi, Italy |
| Born | Jose Epigmenio Villanueva y Gomez de Eguiarreta † | Taxco | Bishop-Elect of Antequera, Oaxaca, México |
| 25 Mar | 43.4 | Ordained Bishop | Karl Franz von Lodron † | Bishop of Brixen {Bressanone}, Italy |
| 23.3 | Ordained Priest | Ambrose Maréchal, P.S.S. † | Priest of Society of Priests of Saint Sulpice | Archbishop of Baltimore, Maryland, USA |
| 26 Mar | 44.8 | Appointed | Angelo Antonio Anselmi † | Bishop of San Severino (Marche), Italy |
| 60.3 | Appointed | Dominicus Arcaroli † | Bishop of Vieste, Italy | Bishop Emeritus |
| 58.4 | Appointed | Giuseppe Maria Beneventi, O.F.M. Conv. † | Bishop of Muro Lucano, Italy |
| 49.4 | Appointed | Franciscus Bugliari † | Titular Bishop of Thagaste |
| 61.1 | Appointed | Michelangelo Calandrelli, O.S.A. † | Bishop of Acerno, Italy |
| 59.5 | Confirmed | Giuseppe Corrado Panzini † | Bishop of Ugento, Italy |
| 58.6 | Appointed | Antonio Cresi † | Bishop of Ortona a Mare e Campli, Italy |
| 46.8 | Appointed | Felix Antonius d’Alessandria † | Bishop of Cariati e Cerenzia, Italy |
| 46.1 | Appointed | Giovanni Gaetano del Muscio † | Bishop of Carinola (Calina), Italy | Archbishop of Manfredonia, Italy |
| 57.9 | Appointed | Luca Nicola De Luca † | Bishop of Trivento, Italy | Bishop Emeritus |
| 45.4 | Appointed | Bernardo Maria della Torre † | Bishop of Marsico Nuovo, Italy | Bishop of Castellammare di Stabia, Italy |
| 63.2 | Appointed | Sebastiano de Rosa † | Bishop of Avellino e Frigento, Italy |
| 57.8 | Appointed | Francesco Antonio Duca † | Bishop of Castro di Puglia, Italy |
| 55.9 | Appointed | Nikolaj Ferrich † | Bishop of Trebinje e Mrkan, Bosnia and Herzegovina |
| 58.5 | Appointed | Gennaro Fortunato † | Bishop of Lavello, Italy |
| 52.6 | Appointed | Vincentius Greco † | Bishop of Belcastro, Italy |
| 47.5 | Appointed | Francesco Antonio Grillo, O.F.M. Conv. † | Bishop of Martirano (Martoranum), Italy | Bishop of Cassano all’Jonio, Italy |
| 51.7 | Appointed | Francesco Saverio Gualtieri † | Bishop of L’Aquila, Italy | Bishop of Caserta, Italy |
| 71.1 | Appointed | Donato de’ Liguori † | Bishop of Venafro, Italy |
| 44.9 | Appointed | Lodovico Ludovici (Ludovico), O.F.M. † | Bishop of Crotone (Cotrone), Italy | Bishop of Policastro, Italy |
| 45.7 | Appointed | Joannes Bapt. Marchese † | Bishop of Catanzaro, Italy |
| 63.5 | Appointed | Giuseppe Martini † | Bishop of Bova, Italy |
| 59.3 | Appointed | Giuseppe Mormile, C.R. † | Titular Archbishop of Nazareth |
| 73.9 | Appointed | Carlo Nicodemi † | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| 61.0 | Appointed | Salvatore Palica, O.S.B. † | Bishop of Bisceglie, Italy |
| 63.8 | Appointed | Raffaele Pasca, O.S.B. † | Bishop of Teano, Italy |
| 65.8 | Appointed | Giovanni Saverio Pirelli † | Bishop of Ariano, Italy |
| 62.3 | Confirmed | Giuseppe Domenico Porqueddu † | Bishop of Iglesias, Italy |
| 70.2 | Appointed | Lorenzo Potenza † | Bishop of Sarno, Italy |
| 66.9 | Appointed | Pasquale Sansone † | Bishop of Ischia, Italy |
| 66.3 | Appointed | Ludovico Spagnoletti, O.F.M. † | Archbishop of Dubrovnik (Ragusa), Croatia |
| 45.8 | Appointed | Salvatore Spinelli, O.S.B. † | Bishop of Lecce, Italy | Archbishop of Salerno, Italy |
| 39.2 | Appointed | Alessandro Tommasini † | Bishop of Oppido Mamertina, Italy | Archbishop of Reggio Calabria, Italy |
| 30 Mar | 47.0 | Installed | Antonio Despuig y Dameto † | Bishop of Orihuela, Spain | Cardinal, Archbishop Emeritus of Sevilla {Seville}, Spain |
| 1 Apr | | Born | Giovanni Sabatini (Sabatino) † | Lagonegro | Bishop of Valva e Sulmona, Italy |
| 7 Apr | 27.2 | Ordained Priest | Gaetano Barbaroli † | Priest | Bishop of Policastro, Italy |
| 23.0 | Ordained Priest | Anselmo Basilici † | Priest | Bishop of Nepi e Sutri, Italy |
| 22.7 | Ordained Deacon | Giuseppe de Belánsky † | Deacon | Bishop of Banská Bystrica, Slovakia |
| 42.3 | Ordained Priest | Pietro Gravina † | Priest | Cardinal, Archbishop of Palermo, Italy |
| 22.3 | Ordained Priest | Kajetan von Kowalski † | Priest of Poznań, Poland | Auxiliary Bishop of Gniezno e Poznań, Poland |
| 9 Apr | | Born | Adalberto Bartakovics † | Felsö-Elefánt | Archbishop of Eger, Hungary |
| 58.4 | Ordained Bishop | Giuseppe Maria Beneventi, O.F.M. Conv. † | Bishop of Muro Lucano, Italy |
| 61.1 | Ordained Bishop | Michelangelo Calandrelli, O.S.A. † | Bishop of Acerno, Italy |
| 59.6 | Ordained Bishop | Giuseppe Corrado Panzini † | Bishop of Ugento, Italy |
| 58.6 | Ordained Bishop | Antonio Cresi † | Bishop of Ortona a Mare e Campli, Italy |
| 46.8 | Ordained Bishop | Felix Antonius d’Alessandria † | Bishop of Cariati e Cerenzia, Italy |
| 46.2 | Ordained Bishop | Giovanni Gaetano del Muscio † | Bishop of Carinola (Calina), Italy | Archbishop of Manfredonia, Italy |
| 45.4 | Ordained Bishop | Bernardo Maria della Torre † | Bishop of Marsico Nuovo, Italy | Bishop of Castellammare di Stabia, Italy |
| 57.8 | Ordained Bishop | Francesco Antonio Duca † | Bishop of Castro di Puglia, Italy |
| 55.9 | Ordained Bishop | Nikolaj Ferrich † | Bishop of Trebinje e Mrkan, Bosnia and Herzegovina |
| 58.6 | Ordained Bishop | Gennaro Fortunato † | Bishop of Lavello, Italy |
| 52.6 | Ordained Bishop | Vincentius Greco † | Bishop of Belcastro, Italy |
| 47.5 | Ordained Bishop | Francesco Antonio Grillo, O.F.M. Conv. † | Bishop of Martirano (Martoranum), Italy | Bishop of Cassano all’Jonio, Italy |
| 51.7 | Ordained Bishop | Francesco Saverio Gualtieri † | Bishop of L’Aquila, Italy | Bishop of Caserta, Italy |
| 71.2 | Ordained Bishop | Donato de’ Liguori † | Bishop of Venafro, Italy |
| 45.0 | Ordained Bishop | Lodovico Ludovici (Ludovico), O.F.M. † | Bishop of Crotone (Cotrone), Italy | Bishop of Policastro, Italy |
| 63.6 | Ordained Bishop | Giuseppe Martini † | Bishop of Bova, Italy |
| 59.4 | Ordained Bishop | Giuseppe Mormile, C.R. † | Titular Archbishop of Nazareth |
| 61.0 | Ordained Bishop | Salvatore Palica, O.S.B. † | Bishop of Bisceglie, Italy |
| 63.8 | Ordained Bishop | Raffaele Pasca, O.S.B. † | Bishop of Teano, Italy |
| 66.9 | Ordained Bishop | Pasquale Sansone † | Bishop of Ischia, Italy |
| 66.3 | Ordained Bishop | Ludovico Spagnoletti, O.F.M. † | Archbishop of Dubrovnik (Ragusa), Croatia |
| 10 Apr | 49.5 | Ordained Bishop | Franciscus Bugliari † | Titular Bishop of Thagaste |
| 45.7 | Ordained Bishop | Joannes Bapt. Marchese † | Bishop of Catanzaro, Italy |
| 39.2 | Ordained Bishop | Alessandro Tommasini † | Bishop of Oppido Mamertina, Italy | Archbishop of Reggio Calabria, Italy |
| 11 Apr | 62.3 | Appointed | Manuel Abad Lasierra † | Titular Archbishop of Selymbria | Bishop Emeritus of Astorga, Spain |
| 16 Apr | | Born | Filippo de Angelis † | Ascoli Pisceno | Cardinal, Archbishop of Fermo, Italy |
| 21 Apr | | Born | Lorenzo Pontillo † | Casanuova | Archbishop of Cosenza, Italy |
| 22 Apr | | Ordained Bishop | Adrian Butrymowicz, O.S.B.M. † | Titular Bishop of Calama | Auxiliary Bishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 71.2 | Died | João Teixeira de Carvalho † | Bishop of Elvas, Portugal |
| 24 Apr | 45.8 | Appointed | Jean-Siffrein Maury † | Titular Archbishop of Nicaea | Cardinal, Bishop Emeritus of Corneto (Tarquinia) e Montefiascone, Italy |
| 29 Apr | 43.7 | Ordained Bishop | Luiz de Brito Homem † | Bishop of Angola e Congo, Angola | Bishop of São Luís do Maranhão, Brazil |
| 53.0 | Ordained Bishop | Miguel da Madre de Deus da Cruz, O.F.M. † | Bishop of São Paulo, Brazil | Archbishop of Braga, Portugal |
| 53.7 | Ordained Bishop | Francisco Monteiro Pereira de Azevedo † | Bishop of Viseu, Portugal |
| 46.7 | Ordained Bishop | Michal Pałucki † | Titular Bishop of Adraa |