| Date | Age | Event | Bishop | Title | Current Title |
| 1 May | 51.3 | Ordained Bishop | Thomas Scallan, O.F.M. † | Titular Bishop of Dragobitia (Drago) | Vicar Apostolic of Newfoundland, Canada |
| 5 May | | Ordained Bishop | Thomas Coen † | Titular Bishop of Milevum | Bishop of Clonfert, Ireland |
| 72.1 | Ordained Bishop | Simón López García, C.O. † | Bishop of Orihuela, Spain | Archbishop of Valencia, Spain |
| 8 May | 62.8 | Ordained Bishop | Jan Pavel Woronicz † | Bishop of Kraków, Poland | Archbishop of Warszawa {Warsaw}, Poland |
| 13 May | 76.0 | Died | Charles-Eutrope de La Laurancie † | Bishop of Nantes, France |
| 14 May | 50.2 | Appointed | Alexander Paterson † | Coadjutor Vicar Apostolic of Lowland District, Scotland, Great Britain | Vicar Apostolic of Eastern District, Scotland, Great Britain |
| 50.2 | Appointed | Alexander Paterson † | Titular Bishop of Cybistra | Vicar Apostolic of Eastern District, Scotland, Great Britain |
| 19 May | 43.6 | Ordained Bishop | Carlo Zen † | Titular Archbishop of Chalcedon | Apostolic Nuncio Emeritus to Switzerland |
| 20 May | 72.2 | Died | Joseph Hieronymus Karl von Kolborn † | Auxiliary Bishop of Regensburg, Germany |
| 21 May | | Born | Giuseppe Moreschi † | Santa Maria Nuova | Bishop of Città di Castello, Italy |
| 22 May | 65.4 | Died | Charles La Mothe, M.E.P. † | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam | Vicar Apostolic |
| 23 May | 55.4 | Appointed | Jean-Jacques Guérard, M.E.P. † | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 55.4 | Appointed | Jean-Jacques Guérard, M.E.P. † | Titular Bishop of Castoria | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 25 May | 71.9 | Died | Vinzenz Joseph Franz Sales von Schrattenbach † | Bishop of Brno, Czech Republic |
| 31 May | | Appointed | Ignazio Palmidessa, O.P. † | Bishop of Tinos, Greece |
| 3 Jun | | Appointed | Basilios Haractengi (Araqtingi), B.C. † | Bishop of Alep [Beroea, Halab] (Melkite Greek), Syria |
| 4 Jun | 58.7 | Ordained Deacon | Giovanni Francesco Compagnoni Marefoschi † | Deacon of Tamiathis | Apostolic Nuncio to Portugal |
| 6 Jun | 70.1 | Died | Louis-Mathias-Joseph de Barral † | Archbishop Emeritus of Tours, France |
| 7 Jun | 52.5 | Selected | József Vurum † | Bishop of Székesfehérvár (Albareale), Hungary | Bishop of Nitra, Slovakia |
| 23.0 | Ordained Priest | Ladislav Záboyský † | Priest | Bishop of Spiš, Slovakia |
| 8 Jun | 22.9 | Ordained Priest | Emanuele Marongiu Maccioni † | Priest | Bishop Emeritus of Galtelli-Nuoro (Galtelly Nori), Italy |
| 61.2 | Selected | Alessandro Maria Pagani † | Bishop of Lodi, Italy |
| 26.2 | Ordained Priest | Cornelius Richard Antoon van Bommel † | Priest | Bishop of Liège, Belgium |
| 9 Jun | 59.7 | Ordained Bishop | Jerónimo Castellón y Salas † | Bishop of Tarazona, Spain |
| 58.7 | Ordained Priest | Giovanni Francesco Compagnoni Marefoschi † | Priest of Tamiathis | Apostolic Nuncio to Portugal |
| Ordained Bishop | Ignazio Palmidessa, O.P. † | Bishop of Tinos, Greece |
| 11 Jun | 23.4 | Ordained Priest | Balthasar Schitter † | Priest of Salzburg, Austria | Auxiliary Bishop |
| 14 Jun | 65.7 | Selected | Luigi Zuppani † | Bishop of Belluno e Feltre, Italy |
| 16 Jun | | Born | Bonifatius von Haneberg, O.S.B. † | Lenzfried | Bishop of Speyer, Germany |
| 18 Jun | | Born | Maximus Paulus Brulley de La Brunière, M.E.P. † | Sartrouville, Seine-et-Oise | Bishop-Elect of Tremithus |
| Born | Michele Mautone † | Marigliano | Bishop of Nardò, Italy |
| 20 Jun | | Born | Paolo di Niquesa † | Napoli | Bishop of Aquino, Sora, e Pontecorvo, Italy |
| 21 Jun | 24.9 | Ordained Priest | Jean-Pierre Sola † | Priest | Bishop Emeritus of Nice, France |
| 23 Jun | 58.8 | Ordained Bishop | Giovanni Francesco Compagnoni Marefoschi † | Titular Archbishop of Tamiathis | Apostolic Nuncio to Portugal |
| 58.1 | Ordained Bishop | Andrés García Palomares † | Bishop of Albarracin, Spain |
| 24 Jun | 25.3 | Ordained Priest | José Manuel de Lemos † | Priest | Bishop of Coimbra, Portugal |
| 26 Jun | | Born | Victor-Felix Bernadou † | Castres | Cardinal, Archbishop of Sens (-Auxerre), France |
| 28 Jun | 64.5 | Selected | Ignace V Cattan (Qattan) † | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria |
| 64.5 | Selected | Ignace V Cattan (Qattan) † | Bishop of Damas (Melkite Greek), Syria | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria |
| 29 Jun | 39.3 | Ordained Bishop | Pedro José de Fonte y Hernández Miravete † | Archbishop of México, Federal District | Archbishop Emeritus |
| 61.5 | Ordained Bishop | João de Magalhães e Avelar † | Bishop of Porto, Portugal |
| 23.0 | Ordained Priest | Piotr Pawel Beniamin Szymański, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Janów Podlaski (Podlaska o Janów), Poland |
| 30 Jun | 65.8 | Appointed | Francesco Luigi Fontana, B. † | Prefect of the Roman Curia - Other | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 53.9 | Ordained Bishop | Daniel Eliasz Ostrowski † | Titular Bishop of Bethsaida | Auxiliary Bishop of Gniezno e Poznań, Poland |
| Born | Melchiorre Lo Piccolo † | Licata | Bishop of Nicosia, Italy |
| 66.4 | Selected | Johann Nepomuk von Dankesreither † | Bishop of Sankt Pölten, Austria |
| Jul | | Appointed | Ignace Haggiuri † | Bishop of Foreign Diocese | Bishop of Alep [Beroea, Halab] (Melkite Greek), Syria |
| 1 Jul | 64.5 | Ordained Bishop | Ignace V Cattan (Qattan) † | Patriarch of Antiochia {Antioch} (Melkite Greek), Syria |
| Born | Paolo dei Conti Fabiani † | Gubbio | Bishop of Assisi, Italy |
| 7 Jul | 64.2 | Died | Pietro Antonio Raimundo de San Giuseppe Roviglia, O.C.D. † | Vicar Apostolic Emeritus of Malabar, India |
| 9 Jul | | Born | Giulio Metti, C.O. † | Firenze | Bishop of Livorno, Italy |
| 10 Jul | 68.3 | Selected | Francesco Chiarchiaro † | Titular Bishop of Lampsacus |
| 51.4 | Selected | Emmanuele Custo † | Bishop of Mazara del Vallo, Italy |
| 66.6 | Selected | Pietro Gravina † | Cardinal, Archbishop of Palermo, Italy |
| 63.0 | Selected | Gabriello Maria Gravina, O.S.B. † | Bishop of Catania, Italy | Prelate of Santa Lucia del Mela, Italy |
| Born | Juan Francisco de Paula Solar Mery, O. de M. † | San José de Maipo | Bishop of San Carlos de Ancud, Chile |
| 63.5 | Selected | Silvestro Todaro, O.F.M. Conv. † | Bishop of Patti, Italy |
| 12 Jul | | Born | Giovanni Simeoni † | Paliano, Italy | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 14 Jul | 64.3 | Ordained Bishop | Johann Aloys (Algis) Schneider † | Titular Bishop of Argos | Vicar Apostolic of Foreign Vicariate |
| 15 Jul | 60.7 | Retired | Ramón José Arce † | Archbishop of Zaragoza, Spain | Patriarch Emeritus of West Indies, Spain |
| 16 Jul | 56.5 | Selected | Domenico Benedetto Balsamo, O.S.B. † | Archbishop of Monreale, Italy |
| 20.7 | Professed | Luigi Maria (Ferdinando) Fortini, O.C.D. † | Member of Order of Discalced Carmelites | Vicar Apostolic of Bombay, India |
| Ordained Bishop | Ignace Haggiuri † | Bishop of Foreign Diocese | Bishop of Alep [Beroea, Halab] (Melkite Greek), Syria |
| 21 Jul | | Died | Antonio Dodmassei † | Bishop of Shkodrë (Scutari), Albania |
| 50.7 | Ordained Bishop | Salvador Jiménez y Padilla † | Bishop of Popayán, Colombia |
| Born | José Ignacio Montoya Peláez † | Medellin | Bishop of Medellín, Colombia |
| 47.2 | Ordained Bishop | Gregorio Rodríguez Carrillo, O.S.Bas. † | Bishop of Cartagena, Colombia |
| 22 Jul | 76.6 | Appointed | Giovanni Battista a Santa Margarita Pietro Alessandro Banfi, O.C.D. † | Bishop of Tivoli, Italy |
| 23.8 | Ordained Priest | Anthony Blanc † | Priest | Archbishop of New Orleans, Louisiana, USA |
| 52.6 | Appointed | Michelangelo Calmet † | Bishop of Ripatransone, Italy |
| 60.9 | Appointed | Bartolomé Cienfuegos † | Bishop of Mondoñedo, Spain |
| 43.7 | Appointed | Giorgio Doria Pamphilj Landi † | Cardinal-Priest of Santa Maria in Via | Cardinal, Prefect of the Congregation of Rites |
| 43.7 | Elevated to Cardinal | Giorgio Doria Pamphilj Landi † | Cardinal, Prefect of the Congregation of Rites |
| 57.8 | Appointed | Luigi Ercolani † | Cardinal-Deacon of San Marco | Cardinal, Cardinal-Priest |
| 57.8 | Elevated to Cardinal | Luigi Ercolani † | Cardinal, Cardinal-Priest of San Marco |
| 49.7 | Appointed | Andrés Esteban y Gómez † | Bishop of Jaén, Spain |
| 50.7 | Appointed | Felipe González Abarca, O. de M. † | Bishop of Ibiza, Spain | Bishop of Santander, Spain |
| 53.1 | Confirmed | Augustin Johann Joseph Gruber † | Bishop of Ljubljana, Slovenia | Archbishop of Salzburg, Austria |
| 42.2 | Appointed | Johann Baptist Judas Thaddeus von Keller † | Auxiliary Bishop of Augsburg, Germany | Bishop of Rottenburg, Germany |
| 42.2 | Appointed | Johann Baptist Judas Thaddeus von Keller † | Titular Bishop of Evaria | Bishop of Rottenburg, Germany |
| 42.0 | Appointed | Francesco Leonini † | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 75.9 | Confirmed | Joaquim de Santa Clara Brandão (Lopes), O.S.B. † | Archbishop of Évora, Portugal |
| 65.8 | Appointed | Manuel Vicente Martínez y Jiménez † | Archbishop of Zaragoza, Spain |
| 82.8 | Appointed | Giovanni Battista Quarantotti † | Cardinal-Priest of Santa Maria in Ara Coeli | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 82.8 | Elevated to Cardinal | Giovanni Battista Quarantotti † | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 62.7 | Confirmed | Emeric Karol Raffay † | Bishop of Bosna (Djakovo) et Srijem, Croatia |
| 62.0 | Appointed | Giacomo Ranghiasci † | Bishop of San Severino (Marche), Italy |
| 46.3 | Appointed | Vicente Román y Linares, O. Praem. † | Auxiliary Bishop of Islas Canarias {Canary Islands}, Spain | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 46.3 | Appointed | Vicente Román y Linares, O. Praem. † | Titular Bishop of Dausara | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 59.1 | Appointed | Salvador de Sanmartin y Cuevas † | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 52.0 | Appointed | Stanislao Sanseverino † | Cardinal-Deacon of Santa Maria in Portico (Campitelli) | Cardinal, Priest of the Roman Curia - Other |
| 52.0 | Elevated to Cardinal | Stanislao Sanseverino † | Cardinal, Priest of the Roman Curia - Other |
| 78.6 | Appointed | Camillo de Simeoni † | Cardinal-Priest of San Giovanni a Porta Latina | Cardinal, Bishop of Nepi e Sutri, Italy |
| 78.6 | Elevated to Cardinal | Camillo de Simeoni † | Cardinal, Bishop of Nepi e Sutri, Italy |
| 63.6 | Confirmed | Silvestro Todaro, O.F.M. Conv. † | Bishop of Patti, Italy |
| 23 Jul | 74.5 | Died | Michael Léopold Brigido von Marenfels und Bresoviz † | Bishop of Spiš, Slovakia |
| Ordained Bishop | Gabriel Homsi (Hamsi) † | Archbishop of Homs (-Hama-Nabk) (Syrian), Syria |
| 25 Jul | 55.5 | Ordained Bishop | Jean-Jacques Guérard, M.E.P. † | Titular Bishop of Castoria | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 28 Jul | 76.6 | Ordained Bishop | Giovanni Battista a Santa Margarita Pietro Alessandro Banfi, O.C.D. † | Bishop of Tivoli, Italy |
| 59.6 | Appointed | Francesco Cesarei Leoni † | Cardinal-Priest of Santa Maria del Popolo | Cardinal, Bishop of Jesi, Italy |
| 59.6 | Elevated to Cardinal | Francesco Cesarei Leoni † | Cardinal, Bishop of Jesi, Italy |
| Ordained Bishop | Aloisio Gandolfi, C.M. † | Titular Bishop of Icosium | Vicar Apostolic of Alep [Beroea, Halab], Syria |
| 42.0 | Ordained Bishop | Francesco Leonini † | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 78.6 | Appointed | Antonio Lante Montefeltro Della Rovere † | Cardinal, Cardinal-Priest of Santi Quirico e Giulitta |
| 78.6 | Elevated to Cardinal | Antonio Lante Montefeltro Della Rovere † | Cardinal, Cardinal-Priest of Santi Quirico e Giulitta |
| 4 Aug | 52.6 | Ordained Bishop | Michelangelo Calmet † | Bishop of Ripatransone, Italy |
| 59.8 | Ordained Bishop | Juan Francisco Castañiza Larrea y Gonzalez de Agüero † | Bishop of Durango, México |
| 61.6 | Ordained Bishop | José Higinio Durán y Martel, O. de M. † | Bishop of Panamá |
| Born | Louis Joseph Mary Theodore De Goesbriand † | Saint-Urbain, France | Bishop of Burlington, Vermont, USA |
| 42.2 | Ordained Bishop | Johann Baptist Judas Thaddeus von Keller † | Titular Bishop of Evaria | Bishop of Rottenburg, Germany |
| 62.1 | Ordained Bishop | Giacomo Ranghiasci † | Bishop of San Severino (Marche), Italy |
| 44.9 | Ordained Bishop | Mariano Rodríguez de Olmedo y Valle † | Bishop of Puerto Rico (Porto Rico) | Archbishop of Santiago de Cuba |
| 9 Aug | 53.7 | Appointed | Thomas Basilius Tomaggian, O.F.M. Conv. † | Titular Archbishop of Durrës (Durazzo) (Albanian), Albania |
| 10 Aug | 70.9 | Resigned | Remigio de La Santa y Ortega † | Bishop of La Paz, Bolivia | Bishop of Lérida, Spain |
| 11 Aug | 22.6 | Ordained Deacon | Anton Karner † | Deacon | Bishop of Győr (Raab), Hungary |
| 14 Aug | 43.8 | Appointed | Carlo Zen † | Apostolic Nuncio to Switzerland | Apostolic Nuncio Emeritus |
| 15 Aug | 18.5 | Professed | Giuseppe Maria Castellani, O.S.A. † | Member of Order of St. Augustine | Titular Bishop of Porphyreon |
| 18 Aug | 50.5 | Ordained Bishop | Alexander Paterson † | Titular Bishop of Cybistra | Vicar Apostolic of Eastern District, Scotland, Great Britain |
| 21 Aug | | Born | Juan José Aragonés, O.S.A. † | Madrid, Spain | Bishop of Nueva Segovia, Philippines |
| 22 Aug | | Born | Anacleto Chicaro, O.F.M. † | San Felice, Italy | Vicar Apostolic Emeritus of Egitto, Egypt |
| 25 Aug | 62.8 | Ordained Bishop | Emeric Karol Raffay † | Bishop of Bosna (Djakovo) et Srijem, Croatia |
| 54.7 | Ordained Bishop | Constantin Ernest Ruziczka (Růžička) † | Bishop of Ceské Budĕjovice {Budweis}, Czech Republic |
| 26 Aug | 61.5 | Succeeded | Binkentios Coressi † | Vicar Apostolic of Constantinople, Turkey |
| 75.7 | Died | Giovanni Battista Fonton, O.F.M. Conv. † | Bishop Emeritus of Syros (e Milos), Greece |
| 29 Aug | | Born | Ludwig Forweck † | Dresden | Prefect of Meißen (Meissen) {Lusazia o Lausitz; Sassonia}, Germany |
| 31 Aug | 22.4 | Ordained Priest | Andreas (André) Räß (Raess) † | Priest of Mainz, Germany | Bishop of Strasbourg, France |