| Date | Age | Event | Bishop | Title | Current Title | 
|---|
| 1 May | 63.1 | Ordained Bishop | Karl Adalbert von Beyer, O. Praem. † | Titular Bishop of Sebaste in Palaestina | Auxiliary Bishop of Köln {Cologne}, Germany | 
| 63.4 | Installed | Michele Arcangelo Del Forno † | Bishop of Trivento, Italy | Bishop Emeritus | 
| 2 May |  | Born | Buenaventura del Purísimo Corazón de María Portillo y Tejeda, O.F.M. Obs. † |  | Bishop of Zacatecas, México | 
| 3 May | 23.2 | Ordained Priest | Antonio Maria Fanìa, O.F.M. Obs. † | Priest of Order of Observant Friars Minor | Bishop of Potenza e Marsico Nuovo, Italy | 
|  | Born | Denis (Alphonse) Steyaert, O.C.D. † |  | Titular Archbishop of Damascus | 
| 5 May |  | Born | Thomas Francis Hendricken † |  | Bishop of Providence, Rhode Island, USA | 
| 52.3 | Resigned | Myles Prendergast, O.C.D. † | Vicar Apostolic of Verapoly, India | Vicar Apostolic Emeritus | 
|  | Born | Giovanni Timoleone Raimondi, P.I.M.E. † |  | Vicar Apostolic of Hong Kong [Xianggang], China | 
| 6 May | 55.6 | Ordained Bishop | Michał Piwnicki † | Titular Bishop of Ramata (Rama) | Bishop of Lutsk and Zhytomyr (Łuck and Zytomierz), Ukraine | 
| 8 May | 48.3 | Succeeded | Patrick Burke † | Bishop of Elphin, Ireland | 
| 82.1 | Died | Pedro Agustín Estévez y Ugarte † | Bishop of Yucatán (Mérida), México | 
| 61.7 | Died | Simon Garnier † | Bishop of Vannes, France | 
| 13 May | 80.0 | Died | José Carrión y Marfil † | Bishop Emeritus of Trujillo, Peru | 
| 16 May |  | Born | Andrija Ilić (Illiich) † |  | Bishop of Hvar (Lesina), Croatia | 
| 20 May | 48.5 | Ordained Bishop | Joseph Signay † | Titular Archbishop of Fussala | Archbishop of Québec, Canada | 
| 69.9 | Ordained Bishop | François-Joseph de Villeneuve-Esclapon † | Bishop of Verdun, France | 
| 21 May | 77.1 | Appointed | Timoteo Maria (Antonio) Ascensi, O.C.D. † | Bishop of Osimo e Cingoli, Italy | 
| 70.9 | Confirmed | Bernhard Boll, O. Cist. † | Archbishop of Freiburg im Breisgau, Germany | 
| 50.9 | Appointed | Jakob Brand † | Bishop of Limburg, Germany | 
| 62.5 | Appointed | Francesco Canali † | Titular Archbishop of Larissa in Thessalia | Cardinal, Bishop Emeritus of Tivoli, Italy | 
| 70.8 | Appointed | Fernando Caicedo y Flores † | Archbishop of Santafé en Nueva Granada, Colombia | 
| 71.3 | Appointed | Manuel de los Santos Escobar † | Bishop of Quito, Ecuador | Bishop-Elect | 
| 61.8 | Appointed | Giovanni Crisostomo Dondini, C.R.L. † | Archbishop of Urbino, Italy | 
| 47.3 | Appointed | José María Estévez † | Bishop of Santa Marta, Colombia | 
| 32.3 | Appointed | Gabriele Ferretti † | Bishop of Rieti, Italy | Cardinal, Major Penitentiary of the Apostolic Penitentiary | 
| 57.3 | Appointed | Mariano Garnica y Orjuela, O.P. † | Bishop of Antioquía, Colombia | 
| 53.0 | Appointed | Isidoro Bonifacio López Pulido, O.P. † | Bishop of Segovia, Spain | 
| 64.3 | Appointed | Bernardo Martínez Carnero † | Bishop of Islas Canarias {Canary Islands}, Spain | 
| 35.0 | Appointed | Bl. Giovanni Maria Mastai-Ferretti † | Archbishop of Spoleto, Italy | Pope (Roma {Rome}, Italy) | 
| 66.3 | Appointed | Ramón Ignacio Méndez † | Archbishop of Caracas, Santiago de Venezuela | 
| 41.3 | Appointed | Félix Calixto Miranda y Suárez de Figueroa † | Bishop of Cuenca, Ecuador | 
| 39.6 | Appointed | Francesco Pichi † | Bishop of Tivoli, Italy | Bishop Emeritus | 
| 54.6 | Appointed | Jacinto Rodríguez Rico † | Bishop of Cuenca, Spain | 
| 40.2 | Appointed | Romualdo Antônio de Seixas Barroso † | Archbishop of São Salvador da Bahia, Brazil | 
| 32.0 | Appointed | Giovanni Niccolò Tanari (Tanara) † | Bishop of Faenza, Italy | Titular Patriarch of Antiochia {Antioch} | 
|  | Appointed | Matías Terrazas † | Auxiliary Bishop of La Plata o Charcas, Bolivia | Priest | 
|  | Appointed | Matías Terrazas † | Titular Bishop of Dorylaëum | Priest of La Plata o Charcas, Bolivia | 
| 24 May |  | Born | Ignazio Filippo Harcus † |  | Patriarch of Antiochia {Antioch} (Syrian), Lebanon | 
| 25 May | 17.0 | Professed | Raffaele Corradi, O.C.D. † | Member of Order of Discalced Carmelites | Bishop of Bagnoregio (Bagnorea), Italy | 
| 46.3 | Selected | János Hám † | Bishop of Satu Mare {Szatmár}, Romania | 
| 54.4 | Selected | Ferenc (František) Lajcsák (Lajčák) † | Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania | Bishop Emeritus | 
| 46.7 | Selected | Ignác Szepesy de Négyes † | Bishop of Pécs, Hungary | 
| 60.3 | Selected | Pál Mátyás (Matija Pavao) Szutsits (Sučić) † | Bishop of Székesfehérvár (Albareale), Hungary | Bishop of Bosna (Djakovo) et Srijem, Croatia | 
| 63.4 | Selected | József Vurum † | Bishop of Nitra, Slovakia | 
| 26 May | 58.3 | Selected | Niccola Kováts de Csil-Tusnad † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania | 
| 43.4 | Selected | Luigi Maria Parisio (Canisio) † | Bishop of Gaeta, Italy | Archbishop of Gaeta, Italy | 
| 49.5 | Appointed | Maurelio (de Santa Teresa) Stabellini, O.C.D. † | Coadjutor Vicar Apostolic of Verapoly, India | Coadjutor Vicar Apostolic Emeritus | 
| 70.5 | Selected | Pietro Tasca † | Bishop of Cefalù, Italy | 
| 27 May | 44.8 | Ordained Bishop | Aristaces Azarian, C.M.Vd. † | Titular Bishop of Caesarea in Cappadocia | Abbot General of Congregazione Mechitarista di Vienna | 
| 32.3 | Ordained Bishop | Gabriele Ferretti † | Bishop of Rieti, Italy | Cardinal, Major Penitentiary of the Apostolic Penitentiary | 
| 35.7 | Died | Jean-François Ollivier, M.E.P. † | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam | Vicar Apostolic | 
| 52.1 | Ordained Bishop | Franciszek di Paolo Pawłowski † | Titular Bishop of Dulma | Bishop of Płock, Poland | 
| 28 May | 73.9 | Died | Pietro Bianco † | Bishop of Alghero, Italy | 
| 30 May | 78.5 | Died | Eugenio Giovanni Battista Giuseppe Cerina, O.F.M. Obs. † | Titular Bishop of Sergiopolis | 
| Jun | 22.6 | Ordained Priest | Domingo Canubio Alberto, O.P. † | Priest of Order of Friars Preachers | Bishop of Segorbe, Spain | 
| 1 Jun |  | Born | Charles-Émile Freppel † |  | Bishop of Angers, France | 
| 2 Jun | 66.8 | Selected | Jean-Charles-Richard Dancel † | Bishop of Bayeux, France | 
| 3 Jun | 61.8 | Ordained Bishop | Giovanni Crisostomo Dondini, C.R.L. † | Archbishop of Urbino, Italy | 
| 53.2 | Died | Manuel Martínez Ferro, O. de M. † | Bishop of Málaga, Spain | 
| 35.0 | Ordained Bishop | Bl. Giovanni Maria Mastai-Ferretti † | Archbishop of Spoleto, Italy | Pope (Roma {Rome}, Italy) | 
| 4 Jun | 60.5 | Ordained Bishop | Jakob Frint † | Bishop of Sankt Pölten, Austria | 
| 9 Jun | 24.1 | Ordained Priest | Jean-Joseph Christophe † | Priest | Bishop of Soissons (-Laon), France | 
| 24.1 | Ordained Priest | Félix Fournier † | Priest of Nantes, France | Bishop | 
| 25.1 | Ordained Priest | James Gillis † | Priest of Eastern District, Scotland, Great Britain | Vicar Apostolic | 
| 22.9 | Ordained Priest | Concezio (Giuseppe Francesco Paolo) Pasquini, O.F.M. Obs. † | Priest | Bishop of Ariano, Italy | 
| 24.6 | Ordained Priest | René-Marie-Charles Poirier, C.I.M. † | Priest of Congregation of Jesus and Mary | Bishop of Roseau, Dominica, Antilles | 
| 23.4 | Ordained Priest | Giuseppe Gennaro Romano † | Priest | Bishop of Acerra, Italy | 
| 10 Jun | 41.4 | Ordained Bishop | James Browne † | Titular Bishop of Magydus | Bishop of Kilmore, Ireland | 
| 11 Jun | 40.4 | Ordained Bishop | Estevam a Jesu Maria da Costa, O.F.M. Ref. † | Bishop of São Tomé of Meliapore, India | Bishop of Angra, Portugal | 
| 12 Jun | 83.5 | Died | Wojciech Józef Skarszewski † | Archbishop of Warszawa {Warsaw}, Poland | 
| 13 Jun |  | Born | Nicola (Francisco Saverio) Contieri, O.Bas. † |  | Archbishop Emeritus of Gaeta, Italy | 
| 17 Jun |  | Born | Petrus Hendricus Josephus van Ewijk (Ewyk), O.P. † |  | Vicar Apostolic of Curaçao, Netherlands Antilles, Antilles | 
| 20 Jun |  | Born | Antoine Horner, C.S.Sp. † |  | Prefect Emeritus of Zanguebar, Kenya | 
| 21 Jun |  | Born | Vincenzo Serarcangeli † |  | Bishop of Foligno, Italy | 
| 24 Jun | 48.4 | Ordained Bishop | William Fraser (Frazer) † | Titular Bishop of Tanis | Bishop of Arichat, Nova Scotia, Canada | 
| 37.8 | Ordained Bishop | Antonio Peteani (Petrani) † | Bishop of Poreč (Parenzo), Croatia | Bishop of Poreč i Pula, Croatia | 
| 32.1 | Ordained Bishop | Giovanni Niccolò Tanari (Tanara) † | Bishop of Faenza, Italy | Titular Patriarch of Antiochia {Antioch} | 
| 25 Jun | 47.4 | Appointed | Tommaso Bernetti † | Cardinal-Deacon of San Cesareo in Palatio | Cardinal, Secretary Emeritus of the Secretariat of State | 
| 56.8 | Confirmed | Joseph Bernet † | Bishop of La Rochelle, France | Cardinal, Archbishop of Aix (-Arles-Embrun), France | 
| 63.4 | Confirmed | Jean-François-Étienne Borderies † | Bishop of Versailles, France | 
| 51.8 | Confirmed | Filip Dominik Bordini † | Bishop of Šibenik (Knin), Croatia | Bishop of Hvar (Lesina), Croatia | 
| 56.3 | Appointed | Marcos Antônio de Souza † | Bishop of São Luís do Maranhão, Brazil | 
| 60.6 | Elevated to Cardinal | Joachim-Jean-Xavier d’Isoard † | Cardinal, Archbishop of Auch, France | 
| 52.2 | Appointed | Manoel Joaquim Gonçalves de Andrade † | Bishop of São Paulo, Brazil | 
| 50.3 | Appointed | Franciso López Borricón † | Bishop of Mondoñedo, Spain | 
| 58.7 | Appointed | Diego Martínez Carlón y Teruel † | Bishop of Teruel, Spain | Bishop of Jaén, Spain | 
| 56.8 | Appointed | Vincenzo Macchi † | Cardinal-Priest of Santi Giovanni e Paolo | Cardinal, Cardinal-Bishop of Ostia (e Velletri) | 
| 76.7 | Elevated to Cardinal | Ignazio Nasalli-Ratti † | Cardinal, Apostolic Nuncio | 
| 76.7 | Resigned | Ignazio Nasalli-Ratti † | Apostolic Nuncio to Switzerland | Cardinal, Apostolic Nuncio | 
| 43.5 | Confirmed | Luigi Maria Parisio (Canisio) † | Bishop of Gaeta, Italy | Archbishop of Gaeta, Italy | 
| 54.0 | Appointed | Simón Rojas Guardiola y Hortoneda, O.S.B. † | Bishop of Urgell, Spain | 
| 56.1 | Confirmed | Dominique-Marie Savy † | Bishop of Aire, France | Bishop Emeritus | 
| 57.2 | Confirmed | Grzegorz Tomasz Ziegler, O.S.B. † | Bishop of Linz, Austria | 
| 27 Jun | 36.8 | Selected | Stjepan Pavlović-Lučić † | Bishop of Kotor (Cattaro), Montenegro | 
| 3 Jul |  | Died | Clément Moutran † | Bishop of Baalbek (Melkite Greek), Lebanon | 
| 4 Jul | 62.6 | Died | Karl Klemens von Gruben † | Auxiliary Bishop of Osnabrück, Germany | 
| 7 Jul |  | Born | Francisco Gómez-Salazar y Lucio-Villegas † |  | Bishop Emeritus of León, Spain | 
| 8 Jul | 47.5 | Ordained Bishop | Michael Collins † | Titular Bishop of Spiga(z) (or Pegae) | Bishop of Cloyne and Ross, Ireland | 
| 15 Jul | 44.9 | Selected | Charles-Jean de la Motte de Broons et de Vauvert † | Bishop of Vannes, France | 
| 16 Jul |  | Born | Generoso Mattei † |  | Bishop of Nepi e Sutri, Italy | 
| 18 Jul |  | Born | Pierre-Lambert Goossens † |  | Cardinal, Archbishop of Mechelen, Belgium | 
| 22 Jul |  | Born | Valerio Laspro † |  | Archbishop of Salerno (-Acerno), Italy | 
| 23.5 | Ordained Priest | Paweł Rzewuski † | Priest | Auxiliary Bishop-Elect of Warszawa {Warsaw}, Poland | 
| 28 Jul |  | Born | José Oliver y Hurtado † |  | Bishop Emeritus of Pamplona (-Tudela), Spain | 
| 29 Jul |  | Born | Próspero María Alarcón y Sánchez de la Barquera † |  | Archbishop of México, Federal District | 
| 63.5 | Ordained Bishop | Jean-François-Étienne Borderies † | Bishop of Versailles, France | 
| 56.2 | Ordained Bishop | Dominique-Marie Savy † | Bishop of Aire, France | Bishop Emeritus | 
| 31 Jul |  | Born | Jean-Baptiste Cazet, S.J. † |  | Vicar Apostolic Emeritus of Central Madagascar {Madagascar Centrale}, Madagascar | 
| Aug | 57.9 | Appointed | Cajetan Pires Pireira, C.M. † | Apostolic Administrator of Peking [Beijing], China | Bishop of Nanking [Nanjing], China | 
| 1 Aug | 61.6 | Died | Francisco Genovés, O.P. † | Bishop of Cebu, Philippines | 
| 2 Aug | 23.4 | Ordained Priest | Hendrik-Frans (Henri-François) Bracq † | Priest of Gent {Ghent, Gand}, Belgium | Bishop | 
| 5 Aug | 22.6 | Ordained Deacon | Alberto Barbolani di Montauto † | Deacon | Titular Patriarch of Antiochia {Antioch} | 
| 51.5 | Ordained Bishop | Lazzaro Vladagni Bianchi † | Bishop of Sapë, Albania | 
| 6 Aug |  | Born | Łukasz Solecki † |  | Bishop of Przemyśl, Poland | 
| 7 Aug | 63.5 | Installed | Jean-François-Étienne Borderies † | Bishop of Versailles, France | 
| 11 Aug | 85.8 | Died | Innocenzo Maria Lirutti, O.S.B. † | Bishop of Verona, Italy | 
| 12 Aug | 56.9 | Ordained Bishop | Joseph Bernet † | Bishop of La Rochelle, France | Cardinal, Archbishop of Aix (-Arles-Embrun), France | 
| 22.8 | Ordained Priest | Pietro Buffetti † | Priest | Bishop of Bertinoro, Italy | 
| 52.2 | Ordained Bishop | Pietro Ostini † | Titular Archbishop of Tarsus | Cardinal, Prefect of the Congregation of the Council | 
| 25.0 | Ordained Priest | Bartholomäus Widmer † | Priest | Bishop Emeritus of Ljubljana, Slovenia | 
| 13 Aug | 56.2 | Installed | Dominique-Marie Savy † | Bishop of Aire, France | Bishop Emeritus | 
| 16 Aug |  | Born | Ignacy Łobos † |  | Bishop of Tarnów, Poland | 
| 19 Aug | 55.4 | Ordained Bishop | José Buenaventura Arias Bergara † | Titular Bishop of Ierichus | Vicar Apostolic of Mérida, Venezuela | 
| 22.8 | Ordained Priest | Michael Power † | Priest of Québec, Canada | Bishop of Toronto, Ontario, Canada | 
| 41.7 | Selected | János Keresztély Scitovszky † | Bishop of Rožňava, Slovakia | Cardinal, Archbishop of Esztergom, Hungary | 
| 20 Aug | 25.2 | Ordained Deacon | Vincent Etienne Jekelfalussy † | Deacon of Eger, Hungary | Bishop of Székesfehérvár (Albareale), Hungary | 
| 88.2 | Died | Miguel Antonio da Cruz, O.F.M. Disc. † | Archbishop of Braga, Portugal | 
| 21 Aug | 39.9 | Appointed | Tommaso Pasquale Gizzi † | Apostolic Internuncio to Switzerland | Cardinal, Secretary Emeritus of the Secretariat of State | 
| 25.3 | Ordained Priest | Vincent Etienne Jekelfalussy † | Priest of Eger, Hungary | Bishop of Székesfehérvár (Albareale), Hungary | 
| 23 Aug | 50.7 | Died | Jan Krasovskyj (Krassowski) † | Bishop of Lutsk and Ostroh (Ukrainian), Ukraine | 
| 25 Aug | 70.9 | Died | János Benyovszky † | Auxiliary Bishop of Esztergom, Hungary | 
| 40.6 | Selected | Estevam a Jesu Maria da Costa, O.F.M. Ref. † | Bishop of Angra, Portugal | 
| 26 Aug | 26.5 | Ordained Priest | John Larkin, S.J. † | Priest of London District, England, Great Britain | Priest of Society of Jesus | 
|  | Born | Franz Leopold von Leonrod † |  | Bishop of Eichstätt, Germany | 
| 27 Aug | 90.6 | Died | Kasimir Johann Baptist von Häffelin † | Cardinal, Cardinal-Priest of Sant’Anastasia | 
|  | Born | Edmund James Knight † |  | Bishop Emeritus of Shrewsbury, England, Great Britain | 
| 29 Aug | 52.8 | Died | Carmelo Cordiviola † | Bishop of Albenga, Italy |