| Date | Age | Event | Bishop | Title | Current Title | 
| 1 May | 44.0 | Ordained Bishop | Joseph-Alfred Foulon † | Bishop of Nancy (-Toul), France | Cardinal, Archbishop of Lyon (-Vienne), France | 
| 66.1 | Ordained Bishop | François Gros † | Bishop of Tarentaise, France | Bishop Emeritus | 
| 57.9 | Ordained Bishop | Augustin Hacquard † | Bishop of Verdun, France | 
| 43.8 | Ordained Bishop | Flavien-Abel-Antoinin Hugonin † | Bishop of Bayeux (-Lisieux), France | 
| 57.1 | Ordained Bishop | Giacomo Giuseppe Jans † | Bishop of Aosta, Italy | 
| 45.6 | Ordained Bishop | Jean-Pierre-François Laforce Langevin † | Bishop of Rimouski (St. Germain of), Québec, Canada | Bishop Emeritus | 
| 3 May | 56.0 | Died | Leopold Pelldram † | Bishop of Trier, Germany | 
| 5 May |  | Born | Agustín Aguirre y Ramos † |  | Bishop of Sinaloa, México | 
| 65.0 | Ordained Bishop | Vincent Etienne Jekelfalussy † | Bishop of Székesfehérvár (Albareale), Hungary | 
| 57.6 | Ordained Bishop | Félix-Joseph-François-Barthélemy de Las Cases † | Bishop of Constantine, Algeria | Bishop Emeritus of Constantine (-Hippone), Algeria | 
| 46.5 | Ordained Bishop | István Pankovics † | Bishop of Mukachevo (Munkács) (Ruthenian), Ukraine | 
| 46.3 | Ordained Bishop | János Zalka † | Bishop of Győr (Raab), Hungary | 
| 10 May | 51.9 | Appointed | Gabriele Capaccio, O.F.M. Ref. † | Auxiliary Bishop of Bar (Antivari), Montenegro | 
| 51.9 | Appointed | Gabriele Capaccio, O.F.M. Ref. † | Titular Bishop of Milopotamos | Auxiliary Bishop of Bar (Antivari), Montenegro | 
| 11 May | 47.8 | Died | Peter Joseph Lavialle † | Bishop of Louisville, Kentucky, USA | 
| 12 May | 23.0 | Ordained Priest | Dominikus (Martin Karl) Willi, O. Cist. † | Priest of Order of Cistercians | Bishop of Limburg, Germany | 
| 14 May |  | Born | Adam Stefan Sapieha † |  | Cardinal, Archbishop of Kraków {Cracow}, Poland | 
| 91.6 | Died | Giacomo de Vincentiis † | Archbishop of Lanciano (e Ortona), Italy | 
| 15 May | 40.9 | Ordained Bishop | Léon-Benoit-Charles Thomas † | Bishop of La Rochelle (-Saintes), France | Cardinal, Archbishop of Rouen, France | 
| 16 May | 59.2 | Selected | Alexandre-Théodore Gérin † | Bishop of Agen, France | Priest of Grenoble, France | 
| 17 May |  | Born | Michael Francis Fallon, O.M.I. † |  | Bishop of London, Ontario, Canada | 
| 44.2 | Appointed | Antonius Grech-Delicata-Testaferrata-Cassia † | Titular Bishop of Calydon | Bishop of Gozo, Malta | 
| 50.6 | Confirmed | Lajos Haynald † | Cardinal, Archbishop of Kalocsa, Hungary | 
| 45.6 | Installed | Jean-Pierre-François Laforce Langevin † | Bishop of Rimouski (St. Germain of), Québec, Canada | Bishop Emeritus | 
| 45.6 | Appointed | Luigi (Josef) Puecher Passavalli, O.F.M. Cap. † | Titular Archbishop of Iconium | 
| 18 May |  | Born | Georges-Marie-Eugène Audollent † |  | Bishop of Blois, France | 
| 19 May |  | Born | Pietro Benedetti, M.S.C. † |  | Apostolic Delegate Emeritus to Cuba | 
| 24.2 | Ordained Priest | Braulio Orúe y Vivanco † | Priest of San Cristobal de la Habana, Cuba | Bishop of Pinar del Rio, Cuba | 
| 21 May |  | Born | Nicola Monterisi † |  | Archbishop of Salerno (-Acerno), Italy | 
| 25 May | 50.9 | Selected | Victor-Felix Bernadou † | Cardinal, Archbishop of Sens (-Auxerre), France | 
| 54.5 | Selected | Aimé-Victor-François Guilbert † | Bishop of Gap, France | Cardinal, Archbishop of Bordeaux, France | 
| 26 May | 54.6 | Ordained Bishop | Andrea Formica † | Bishop of Cuneo, Italy | 
| 51.1 | Ordained Bishop | Eugenio Roberto Galletti † | Bishop of Alba (Pompea), Italy | 
| 55.9 | Ordained Bishop | Carlo Savio † | Bishop of Asti, Italy | 
| 28 May | 66.1 | Died | Giovanni-Benedetto Folicaldi † | Bishop of Faenza, Italy | 
| Jun | 25.3 | Ordained Priest | Edward Thomas O’Dwyer † | Priest of Limerick, Ireland | Bishop | 
| 2 Jun | 23.2 | Ordained Priest | Joseph Antoine Fabre † | Priest of Marseille, France | Bishop | 
| 52.2 | Ordained Bishop | Lorenzo Gastaldi † | Bishop of Saluzzo, Italy | Archbishop of Torino {Turin}, Italy | 
| 45.6 | Ordained Bishop | Luigi (Josef) Puecher Passavalli, O.F.M. Cap. † | Titular Archbishop of Iconium | 
| 4 Jun | 41.9 | Appointed | Johann Gabriel Léon Louis Meurin, S.J. † | Vicar Apostolic of Bombay, India | Bishop of Port-Louis, Mauritius | 
| 41.9 | Appointed | Johann Gabriel Léon Louis Meurin, S.J. † | Titular Bishop of Ascalon | Bishop of Port-Louis, Mauritius | 
| 37.0 | Appointed | John Walsh † | Bishop of Sandwich, Ontario, Canada | Archbishop of Toronto, Ontario, Canada | 
| 9 Jun | 55.8 | Ordained Bishop | Giacomo Antonio Colli † | Bishop of Alessandria (della Paglia), Italy | 
| 54.6 | Installed | Andrea Formica † | Bishop of Cuneo, Italy | 
| 52.2 | Installed | Lorenzo Gastaldi † | Bishop of Saluzzo, Italy | Archbishop of Torino {Turin}, Italy | 
| 47.0 | Ordained Bishop | William Lanigan † | Bishop of Goulburn, Australia | 
| 11 Jun |  | Born | Ettore Fronzi † |  | Archbishop Emeritus of Camerino, Italy | 
| 25.2 | Ordained Priest | Joseph Hoare † | Priest of Ardagh (and Clonmacnois), Ireland | Bishop | 
| 26.1 | Ordained Priest | James McGolrick † | Priest of Saint Paul, Minnesota, USA | Bishop of Duluth, Minnesota, USA | 
| 15 Jun | 25.3 | Ordained Priest | Antoine-Marie-Hippolyte Carrie, C.S.Sp. † | Priest of Congregation of the Holy Spirit | Vicar Apostolic Emeritus of Lower French Congo {Congo Francese Inferiore} | 
| 25.0 | Ordained Priest | Eugène-Paul Coupat, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Eastern Szechwan {Se-Ciuen Orientale}, China | 
| 24.6 | Ordained Priest | Luciano Gentilucci † | Priest | Bishop of Fabriano e Matelica, Italy | 
| 26.3 | Ordained Priest | Cláudio José Gonçalves Ponce de Leão, C.M. † | Priest of Congregation of the Mission | Archbishop Emeritus of Porto Alegre, Rio Grande do Sul, Brazil | 
| 22.7 | Ordained Priest | Gisleno Veneri † | Priest | Bishop Emeritus of Acquapendente, Italy | 
 | Born | Henri Vielle, O.F.M. † |  | Vicar Apostolic of Rabat, Morocco | 
| 16 Jun | 43.2 | Ordained Bishop | Francesco Zunnui Casula † | Bishop of Ales e Terralba, Italy | Archbishop of Oristano, Italy | 
| 20 Jun | 48.1 | Died | José María de Jesús Yerovi Pintado, O.F.M. Obs. † | Archbishop of Quito, Ecuador | 
| 21 Jun |  | Born | Francis William Howard † |  | Bishop of Covington, Kentucky, USA | 
| 46.6 | Died | John Kilduff † | Bishop of Ardagh (and Clonmacnois), Ireland | 
| 23 Jun | 58.9 | Installed | Luigi Giuseppe Nazari di Calabiana † | Archbishop of Milano {Milan}, Italy | 
| 24 Jun | 74.9 | Died | Ignác Fábry † | Bishop of Košice, Slovakia | 
 | Born | Giovanni Andrea Masera † |  | Bishop of Colle di Val d’Elsa, Italy | 
| 25 Jun | 23.4 | Ordained Priest | John Rooney † | Priest of Dublin, Ireland | Vicar Apostolic Emeritus of Cape of Good Hope, Western District {Capo di Buona Speranza, Distretto Occidentale}, South Africa | 
| 26 Jun | 67.5 | Died | Juan de la Cruz Calienes Olazabal, O.F.M. Obs. † | Bishop of Arequipa, Peru | 
| 29 Jun | 54.2 | Selected | Mariano Cuartero y Medina, O.P. † | Bishop of Jaro o Santa Elisabetta, Philippines | 
| 287.4 | Canonized | St. Jozafat Kuncewicz, O.S.B.M. † | Archbishop of Polotsk (Połock)-Vitebsk (Ukrainian), Belarus | 
| 2 Jul | 31.5 | Solemn Vows | Jordan Marie Joseph (Eduard) Ballsieper, O.S.B. † | Priest of Order of Saint Benedict | Abbot General | 
| 61.9 | Ordained Bishop | Pietro Colli † | Bishop of Adria, Italy | 
 | Born | José Othón Núñez y Zárate † |  | Archbishop of Antequera, Oaxaca, México | 
| 10 Jul | 81.0 | Died | Daniel O’Connor, O.E.S.A. † | Vicar Apostolic Emeritus of Madras, India | 
| 12 Jul | 51.0 | Confirmed | Victor-Felix Bernadou † | Cardinal, Archbishop of Sens (-Auxerre), France | 
| 52.6 | Confirmed | Jean-Baptiste-Irénée Callot † | Bishop of Oran, Algeria | 
| 39.2 | Appointed | Józef Cybichowski † | Titular Bishop of Cinna | Auxiliary Bishop of Gniezno e Poznań, Poland | 
| 39.2 | Confirmed | Józef Cybichowski † | Auxiliary Bishop of Gniezno e Poznań, Poland | 
 | Born | Angelo Maria Dolci † |  | Cardinal, Apostolic Nuncio | 
| 58.0 | Confirmed | Andon Bedros Hassoun † | Patriarch of Cilicia (Armenian), Lebanon | Cardinal, Patriarch Emeritus | 
| 63.6 | Appointed | Luis de la Lastra y Cuesta † | Cardinal-Priest of San Pietro in Vincoli | Cardinal, Archbishop of Sevilla {Seville}, Spain | 
| 14 Jul | 44.3 | Ordained Bishop | Antonius Grech-Delicata-Testaferrata-Cassia † | Titular Bishop of Calydon | Bishop of Gozo, Malta | 
| 15 Jul | 61.3 | Died | Joseph-Isidore Godelle, M.E.P. † | Vicar Apostolic of Pondicherry, India | 
| 16 Jul | 51.7 | Selected | Matthias Eberhard † | Bishop of Trier, Germany | 
| 19 Jul |  | Born | Ignacio Placencia y Moreira † |  | Bishop of Zacatecas, México | 
| 20 Jul |  | Born | Hilarin (Josef) Felder, O.F.M. Cap. † |  | Titular Bishop of Geras | 
| 22 Jul |  | Born | Charles-Albert-Joseph Lecomte † |  | Bishop of Amiens, France | 
| 26 Jul | 62.4 | Died | Gaetano Carletti † | Bishop of Rieti, Italy | 
| 2 Aug |  | Born | Angelo Maria Ettinger, O.S.B. † |  | Abbot of Santissima Trinità di Cava de’ Tirreni, Italy | 
| 4 Aug | 25.1 | Ordained Priest | Narcisse Zéphirin Lorrain † | Priest of Montréal, Québec, Canada | Bishop of Pembroke, Ontario, Canada | 
| 5 Aug |  | Born | Giovanni Giuseppe Santini, O.F.M. Cap. † |  | Titular Bishop of Zama Major | 
| 7 Aug | 77.5 | Died | Benedetto D’Acquisto, O.F.M. Ref. † | Archbishop of Monreale, Italy | 
| 11 Aug | 62.0 | Died | Lodovico Altieri † | Cardinal, Prefect of the Congregation of the Index | 
 | Born | John Mary Harty † |  | Archbishop of Cashel (-Emly), Ireland | 
| 16.4 | Professed | Francisco Javier Valdés y Noriega, O.E.S.A. † | Member of Order of Hermits of St. Augustine | Bishop of Salamanca, Spain | 
| 14 Aug |  | Died | Giwargis Peter (Georges-Pierre) Mawlada (de Natali) † | Bishop of Diarbekir (Amida) (Chaldean), Turkey | 
| 43.1 | Selected | Johann Baptist Zwerger † | Bishop of Seckau, Austria | 
| 15 Aug | 35.5 | Ordained Bishop | Isidore Clut, O.M.I. † | Titular Bishop of Arindela | Auxiliary Bishop Emeritus of Athabaska Mackenzie, Alberta, Canada | 
| 33.3 | Final Vows | Ignacio León Velasco, S.J. † | Priest of Society of Jesus | Archbishop of Santafé en Nueva Granada, Colombia | 
| 16 Aug | 84.3 | Died | Józef Ambroży Geritz † | Bishop of Warmia (Ermland), Poland | 
| 17 Aug | 23.5 | Ordained Priest | Alphonse Joseph Glorieux † | Priest | Bishop of Boise City, Idaho, USA | 
| 27.0 | Ordained Priest | John James Jonckau † | Priest of Vancouver Island, USA | 
| 21 Aug | 48.9 | Appointed | Leopoldo Zelli Jacobuzi, O.S.B. † | Abbot of San Paolo fuori le Mura, Italy | 
| 23 Aug |  | Born | Ángel Diego y Carbajal, O.S.A. † |  | Vicar Apostolic Emeritus of Changteh [Changde], China | 
| 25 Aug | 69.3 | Succeeded | Charles-François Baillargeon † | Archbishop of Québec, Canada | 
| 25.5 | Professed | Antoine-Marie-Hippolyte Carrie, C.S.Sp. † | Priest of Congregation of the Holy Spirit | Vicar Apostolic Emeritus of Lower French Congo {Congo Francese Inferiore} | 
| 80.1 | Died | Luigi Landi-Vittorj † | Bishop of Assisi, Italy | 
| 79.7 | Died | Pierre-Flavien Turgeon † | Archbishop of Québec, Canada | 
| 31.3 | Professed | Louis-Philippe Walter, C.S.Sp. † | Member of Congregation of the Holy Spirit | Prefect Emeritus of Isole di Mayotta, Nossi-Bé e Comore, Madagascar | 
| 27 Aug |  | Born | Adriaan Smets † |  | Apostolic Delegate Emeritus to Persia | 
| 28 Aug | 69.3 | Installed | Charles-François Baillargeon † | Archbishop of Québec, Canada | 
 | Born | Abel Juan Bazán y Bustos † |  | Bishop of Paraná, Argentina | 
| 23.7 | Ordained Priest | Charles Hugh Gauthier † | Priest of Kingston, Ontario, Canada | Archbishop of Ottawa, Ontario, Canada |