| Date | Age | Event | Bishop | Title | Current Title |
| 3 May | 36.7 | Ordained Deacon | José da Costa e Torres † | Deacon | Archbishop of Braga, Portugal |
| 34.4 | Ordained Bishop | Jean-Baptiste-Marie de Maillé de la Tour-Landry † | Bishop of Gap, France | Bishop of Rennes, France |
| 67.4 | Ordained Bishop | Anton Maria Martin von Stegner † | Titular Bishop of Corycus | Auxiliary Bishop of Wien {Vienna}, Austria |
| 5 May | 63.2 | Died | Scipione Ardoino Alcontres, C.R. † | Archbishop of Messina, Italy |
| 7 May | | Succeeded | Andrew Donnellan † | Bishop of Clonfert, Ireland |
| 100.3 | Died | Peter O’Donnellan † | Bishop of Clonfert, Ireland |
| 9 May | | Born | Antun Giuriceo † | | Bishop of Dubrovnik (Ragusa), Croatia |
| 10 May | 52.6 | Ordained Bishop | Pedro Rubio-Benedicto Herrero † | Bishop of Mallorca, Spain | Bishop of Jaén, Spain |
| 11 May | 77.1 | Died | Armand Bazin de Bezons † | Bishop of Carcassonne, France |
| 17 May | 48.8 | Ordained Bishop | Antonín Theodor Colloredo von Wallsee und Mels † | Cardinal, Archbishop of Olomouc, Czechia |
| 72.8 | Resigned | Pietro di Gennaro † | Bishop of Cava (de’ Tirreni), Italy | Bishop Emeritus |
| 19 May | | Born | José Gómez y Navas, T.O.R. † | | Bishop of Málaga, Spain |
| 22 May | | Born | Joaquín Abarca Blaque † | | Bishop of León, Spain |
| 23 May | 69.7 | Died | Heinrich Joseph von Nitschke † | Auxiliary Bishop of Bamberg, Germany |
| 24 May | 64.4 | Died | Govaart-Geeraard van Eersel † | Bishop of Gent {Ghent, Gand}, Belgium |
| 26 May | 52.9 | Died | Diego Genovesi † | Bishop of Squillace, Italy |
| 78.4 | Died | Eugene (Owen) Geoghegan † | Coadjutor Bishop of Meath, Ireland |
| 28 May | 67.5 | Died | Anton Maria Martin von Stegner † | Auxiliary Bishop of Wien {Vienna}, Austria |
| 29 May | 63.1 | Resigned | Joseph Rolin de Morel de Mons † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 31 May | 50.8 | Ordained Bishop | Jean-Marie Cuchot d’Herbain † | Titular Bishop of Ascalon | Auxiliary Bishop Emeritus of Trier, Germany |
| Jun | 80.6 | Died | Pietro Antonio Zuccheri † | Bishop of Krk (Veglia), Croatia |
| 1 Jun | 53.8 | Confirmed | Jacques-Thomas Astesan, O.P. † | Archbishop of Oristano, Italy |
| 51.3 | Elevated to Cardinal | József Batthyány † | Cardinal, Archbishop of Esztergom, Hungary |
| 53.8 | Appointed | Lothar Breidbach zu Bürresheim, O.S.B. † | Auxiliary Bishop of Fulda, Germany |
| 53.8 | Appointed | Lothar Breidbach zu Bürresheim, O.S.B. † | Titular Bishop of Ierichus | Auxiliary Bishop of Fulda, Germany |
| 52.1 | Appointed | Giambattista Ettore Caracciolo, C.R. † | Archbishop of Bari (-Canosa), Italy |
| 57.9 | Elevated to Cardinal | Giovanni Cornaro † | Cardinal, Cardinal-Deacon of San Cesareo in Palatio |
| 63.4 | Elevated to Cardinal | Francisco Javier Delgado y Venegas † | Cardinal, Patriarch of West Indies, Spain |
| 53.5 | Appointed | Ignatius Dłuski † | Auxiliary Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 53.5 | Appointed | Ignatius Dłuski † | Titular Bishop of Hebron | Auxiliary Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 53.9 | Elevated to Cardinal | Carlo Giuseppe Filippa della Martiniana † | Cardinal, Bishop of Vercelli, Italy |
| 41.8 | Appointed | Cayetano Franco y Monroy † | Archbishop of Guatemala |
| 51.7 | Elevated to Cardinal | Joannes-Henricus von Frankenberg † | Cardinal, Archbishop Emeritus of Mechelen, Belgium |
| 59.8 | Elevated to Cardinal | Tommaso Maria Ghilini † | Cardinal, Cardinal-Priest of Santa Maria sopra Minerva |
| 56.3 | Elevated to Cardinal | Romoaldo Guidi † | Cardinal, Cardinal-Deacon of San Giorgio in Velabro |
| 54.7 | Confirmed | François-Gaspard de Jouffroy de Gonssans † | Bishop of Le Mans, France |
| 65.6 | Elevated to Cardinal | Dominique de La Rochefoucauld † | Cardinal, Archbishop of Rouen, France |
| 36.2 | Confirmed | Charles de La Font de Savines † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 41.4 | Appointed | Baltazar Jaime Martínez de Compañón † | Bishop of Trujillo, Peru | Archbishop of Santafé en Nueva Granada, Colombia |
| 44.6 | Confirmed | Vittorio Filippo Melano di Portula, O.P. † | Archbishop of Cagliari, Italy | Bishop of Novara, Italy |
| 71.2 | Appointed | Nicola Molinari, O.F.M. Cap. † | Bishop of Ravello e Scala, Italy | Bishop of Bovino, Italy |
| 74.2 | Selected | Antônio de São José Moura Marinho, O.E.S.A. † | Archbishop of São Salvador da Bahia, Brazil |
| 48.4 | Appointed | Francesco Polesini † | Bishop of Poreč (Parenzo), Croatia |
| 56.3 | Confirmed | Lorenzo Potenza † | Bishop of Ariano, Italy | Bishop of Sarno, Italy |
| 43.6 | Elevated to Cardinal | Louis-René-Edouard de Rohan-Guéménée † | Cardinal, Bishop Emeritus of Strasbourg, France |
| 51.2 | Selected | Emmanuel Felix Soares (de Santa Catarina), O.C.D. † | Bishop of Cochin, India | Archbishop of Goa, India |
| 36.2 | Appointed | Benedetto Solari, O.P. † | Bishop of Noli, Italy |
| 65.5 | Elevated to Cardinal | Fernando de Sousa e Silva † | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 40.9 | Appointed | August Franz von Strauß (Strauss) † | Auxiliary Bishop of Mainz, Germany |
| 40.9 | Appointed | August Franz von Strauß (Strauss) † | Titular Bishop of Samaria | Auxiliary Bishop of Mainz, Germany |
| 43.4 | Appointed | François-Philippe Taboureau, O.S.B. † | Titular Bishop of Cydonia (Agia, Canea) |
| 54.3 | Selected | Manuel Tavares Coutinho da Silva † | Bishop of Portalegre, Portugal |
| 65.6 | Appointed | Michele Tafuri † | Bishop of Cava (de’ Tirreni), Italy |
| 6 Jun | 45.2 | Selected | Nathaniel Johann Heinrich Bürger, O.F.M. Ref. † | Coadjutor Bishop of Nanking [Nanjing], China | Vicar Apostolic |
| 50.4 | Selected | Flaviano Giacomo Stefano Salustri, O.A.D. † | Bishop of Peking [Beijing], China |
| 7 Jun | 52.1 | Ordained Bishop | Giambattista Ettore Caracciolo, C.R. † | Archbishop of Bari (-Canosa), Italy |
| 71.2 | Ordained Bishop | Nicola Molinari, O.F.M. Cap. † | Bishop of Ravello e Scala, Italy | Bishop of Bovino, Italy |
| 56.3 | Ordained Bishop | Lorenzo Potenza † | Bishop of Ariano, Italy | Bishop of Sarno, Italy |
| 36.2 | Ordained Bishop | Benedetto Solari, O.P. † | Bishop of Noli, Italy |
| 8 Jun | 74.3 | Died | Filippo Mornati † | Bishop of Nepi e Sutri, Italy |
| 23.0 | Ordained Deacon | Samuel Cyryl Stefanowicz † | Deacon of Lviv (Armenian), Ukraine | Archbishop |
| 13 Jun | 23.0 | Ordained Priest | Stefano d’Elia † | Priest | Titular Bishop of Dorylaëum |
| 23.1 | Ordained Priest | Alessandro Maria Pagani † | Priest | Bishop of Lodi, Italy |
| 14 Jun | 42.4 | Selected | Alexandre-Joseph-Alexis de Bruyère de Chalabre † | Bishop of Saint-Omer, France |
| 78.7 | Died | Michele Maria Capece Galeota, C.R. † | Archbishop of Capua, Italy | Archbishop Emeritus |
| 37.5 | Selected | Jean-Auguste de Chastenet de Puységur † | Bishop of Carcassonne, France | Archbishop Emeritus of Bourges, France |
| 15 Jun | 40.3 | Appointed | Teodozy Wisłocki, O.S.B.M. † | Administrator of Supraśl (Ukrainian), Belarus | Bishop |
| 17 Jun | 23.7 | Ordained Deacon | Adrianus van Dongen † | Deacon of Antwerpen {Antwerp, Anvers}, Belgium | Vicar Apostolic of Breda, Netherlands |
| 19 Jun | 24.1 | Ordained Priest | Michele Sanseverino † | Priest | Bishop of Gaeta, Italy |
| 21 Jun | 36.8 | Ordained Priest | José da Costa e Torres † | Priest | Archbishop of Braga, Portugal |
| 44.7 | Ordained Bishop | Vittorio Filippo Melano di Portula, O.P. † | Archbishop of Cagliari, Italy | Bishop of Novara, Italy |
| 25 Jun | 33.2 | Appointed | Gaetano Maria Mantegazza (Montegazza), B. † | Coadjutor Vicar Apostolic of Ava e Pegù, Myanmar | Vicar Apostolic |
| 33.2 | Appointed | Gaetano Maria Mantegazza (Montegazza), B. † | Titular Bishop of Maximianopolis in Palaestina | Vicar Apostolic of Ava e Pegù, Myanmar |
| 27 Jun | 27.0 | Ordained Priest | Andrés Quintian Ponte de Andrade † | Priest of Concepción, Chile | Bishop of Cuenca, Ecuador |
| 29 Jun | 53.8 | Ordained Bishop | Lothar Breidbach zu Bürresheim, O.S.B. † | Titular Bishop of Ierichus | Auxiliary Bishop of Fulda, Germany |
| Jul | 84.2 | Died | Francesco Guidi † | Archbishop of Pisa, Italy |
| 1 Jul | 68.1 | Died | Carlo Gagliardi † | Bishop of Muro Lucano, Italy |
| 8 Jul | 36.5 | Ordained Bishop | Ignace IV Sarrouf, B.C. † | Archbishop of Beirut {Bairut} (Melkite Greek), Lebanon | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria |
| 9 Jul | 59.9 | Died | Nicola Pugliesi † | Archbishop Emeritus of Dubrovnik (Ragusa), Croatia |
| 12 Jul | 53.9 | Died | Antoni Adam Młodowski-Struś, O.S.B.M. † | Bishop of Volodymyr (Włodzimierz) et Brėst (Ukrainian) |
| 13 Jul | 64.1 | Resigned | Joaquim Borges de Figueroa † | Archbishop of São Salvador da Bahia, Brazil | Archbishop Emeritus |
| Born | Anacleto Meoro y Sánchez † | | Bishop of Almería, Spain |
| 18 Jul | 37.6 | Resigned | Jean-Auguste de Chastenet de Puységur † | Bishop of Saint-Omer, France | Archbishop Emeritus of Bourges, France |
| 19 Jul | 29.6 | Ordained Deacon | Benedetto Sinibaldi † | Deacon | Titular Archbishop of Ephesus |
| 20 Jul | 42.5 | Confirmed | Alexandre-Joseph-Alexis de Bruyère de Chalabre † | Bishop of Saint-Omer, France |
| 45.3 | Confirmed | Nathaniel Johann Heinrich Bürger, O.F.M. Ref. † | Coadjutor Bishop of Nanking [Nanjing], China | Vicar Apostolic |
| 48.6 | Appointed | Andrea Cardamone † | Archbishop of Rossano, Italy |
| 58.0 | Installed | Giovanni Cornaro † | Cardinal, Cardinal-Deacon of San Cesareo in Palatio |
| 32.7 | Confirmed | Giuseppe Francesco Maria Ferraris da Genola † | Bishop of Susa, Italy | Bishop of Saluzzo, Italy |
| 59.9 | Installed | Tommaso Maria Ghilini † | Cardinal-Priest of San Callisto | Cardinal, Cardinal-Priest of Santa Maria sopra Minerva |
| 56.4 | Installed | Romoaldo Guidi † | Cardinal, Cardinal-Deacon of San Giorgio in Velabro |
| 45.9 | Appointed | Johann Karl von Hohenzollern-Hechingen † | Coadjutor Bishop of Chelmno (Culma, Kulm), Poland | Bishop of Warmia (Ermland), Poland |
| 45.9 | Appointed | Johann Karl von Hohenzollern-Hechingen † | Titular Bishop of Dibon (Dibona) | Bishop of Warmia (Ermland), Poland |
| 35.5 | Appointed | Ivan Dominik Juras † | Bishop of Pula (Pola), Croatia |
| 55.7 | Confirmed | Giuseppe Maria Langosco-Stroppiana † | Bishop of Alba (Pompea), Italy |
| 74.4 | Confirmed | Antônio de São José Moura Marinho, O.E.S.A. † | Archbishop of São Salvador da Bahia, Brazil |
| 43.1 | Appointed | Antoni Narzymski † | Auxiliary Bishop of Płock, Poland |
| 43.1 | Appointed | Antoni Narzymski † | Titular Bishop of Evaria | Auxiliary Bishop of Płock, Poland |
| 51.0 | Appointed | Nicolas Notariis † | Bishop of Squillace, Italy |
| 37.6 | Confirmed | Jean-Auguste de Chastenet de Puységur † | Bishop of Carcassonne, France | Archbishop Emeritus of Bourges, France |
| 50.5 | Confirmed | Flaviano Giacomo Stefano Salustri, O.A.D. † | Bishop of Peking [Beijing], China |
| 47.3 | Confirmed | Antoni Maciej Sierakowski † | Bishop of Inflanty (Livonia)-Pilten, Poland |
| 51.4 | Confirmed | Emmanuel Felix Soares (de Santa Catarina), O.C.D. † | Bishop of Cochin, India | Archbishop of Goa, India |
| 54.4 | Confirmed | Manuel Tavares Coutinho da Silva † | Bishop of Portalegre, Portugal |
| 22 Jul | | Born | Anton Ferdinand Holtgreven † | | Auxiliary Bishop of Paderborn, Germany |
| 24 Jul | 59.0 | Resigned | Giovanni Battista Pignatelli † | Bishop of Anglona-Tursi, Italy | Bishop Emeritus |
| 25 Jul | 48.7 | Ordained Bishop | Andrea Cardamone † | Archbishop of Rossano, Italy |
| 26 Jul | 32.7 | Ordained Bishop | Giuseppe Francesco Maria Ferraris da Genola † | Bishop of Susa, Italy | Bishop of Saluzzo, Italy |
| 55.7 | Ordained Bishop | Giuseppe Maria Langosco-Stroppiana † | Bishop of Alba (Pompea), Italy |
| 36.4 | Ordained Bishop | Charles de La Font de Savines † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 23.2 | Ordained Priest | Samuel Cyryl Stefanowicz † | Priest of Lviv (Armenian), Ukraine | Archbishop |
| 30 Jul | 51.4 | Selected | José Campos Julián, O.C.D. † | Bishop of Córdoba (Tucumán), Argentina | Archbishop of La Plata o Charcas, Bolivia |
| 2 Aug | 29.7 | Ordained Priest | Benedetto Sinibaldi † | Priest | Titular Archbishop of Ephesus |
| 6 Aug | 57.7 | Installed | Sebastián Malvar y Pinto, O.F.M. † | Bishop of Buenos Aires, Argentina | Archbishop of Santiago de Compostela, Spain |
| 9 Aug | 64.5 | Died | Felice Antonio Bianchi † | Auxiliary Bishop of Modena, Italy |
| 42.6 | Ordained Bishop | Alexandre-Joseph-Alexis de Bruyère de Chalabre † | Bishop of Saint-Omer, France |
| 35.6 | Ordained Bishop | Ivan Dominik Juras † | Bishop of Pula (Pola), Croatia |
| 28.4 | Ordained Priest | José Pegado de Azevedo, C.O. † | Priest of Confederation of Oratorians of St. Philip Neri | Bishop of Angra, Portugal |
| 14 Aug | 65.7 | Selected | Fernando de Sousa e Silva † | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 15 Aug | | Born | José María Mendizábal López de Velasco † | | Archbishop of La Plata o Charcas, Bolivia |
| 18 Aug | 92.6 | Died | Augustine Cheevers, O.S.A. † | Bishop of Meath, Ireland |
| 24 Aug | 71.4 | Installed | Nicola Molinari, O.F.M. Cap. † | Bishop of Ravello e Scala, Italy | Bishop of Bovino, Italy |
| 28 Aug | 58.0 | Resigned | Bartolomeu Manoel Mendes dos Reis † | Bishop of Mariana, Brazil | Bishop Emeritus |
| 30 Aug | 22.9 | Ordained Priest | Joaquim de Sant’Ana Carvalho † | Priest | Bishop Emeritus of Faro {Algarve}, Portugal |