| Date | Age | Event | Bishop | Title | Current Title |
| May | 40.8 | Resigned | Martino Ignazio Caracciolo † | Apostolic Nuncio to Venice, Italy | Titular Archbishop of Chalcedon |
| 1 May | | Born | Francesco Bertazzoli † | | Cardinal, Prefect of the Congregation for Studies |
| 51.3 | Ordained Bishop | José Antonio Flores de Rivera † | Bishop of Nicaragua |
| 47.5 | Appointed | Luigi Gualterio † | Apostolic Nuncio to France | Cardinal, Cardinal-Priest of San Giovanni a Porta Latina |
| 3 May | 52.5 | Resigned | Enrico Enríquez † | Apostolic Nuncio to Spain | Cardinal, Cardinal-Priest of Sant’Eusebio |
| 5 May | | Born | Michele Sanseverino † | | Bishop of Gaeta, Italy |
| 6 May | | Born | Giovanni Antonio de Fulgure, C.M. † | | Archbishop of Taranto, Italy |
| 7 May | | Born | Flórián Kovács † | | Bishop of Satu Mare {Szatmár}, Romania |
| 12 May | 41.6 | Ordained Bishop | Claude Drouas de Boussey † | Bishop of Toul, France |
| 13 May | 58.7 | Died | Alessio Ignazio Marucchi † | Bishop of Acqui, Italy |
| 16 May | | Born | Louis-Sylvestre de La Châtre † | | Titular Bishop of Hemeria (Himeria) |
| 20 May | 56.3 | Confirmed | Antun Becić † | Bishop of Scardona (Skradin), Croatia | Bishop of Hvar (Lesina), Croatia |
| 33.2 | Confirmed | Jean-Armand de Bessuéjouls Roquelaure † | Bishop of Senlis, France | Archbishop Emeritus of Mechelen, Belgium |
| 44.8 | Appointed | Augstín González Pisador † | Auxiliary Bishop of Toledo, Spain | Bishop of Oviedo, Spain |
| 44.8 | Appointed | Augstín González Pisador † | Titular Bishop of Tricomia | Bishop of Oviedo, Spain |
| 42.8 | Confirmed | Giacomo Lieto † | Archbishop of Lanciano, Italy |
| 68.4 | Confirmed | José Manoel da Câmara † | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 32.9 | Confirmed | Aymard-Chrétien-François-Michel de Nicolay † | Bishop of Verdun, France |
| 54.6 | Confirmed | Domenico Saverio Pulci-Doria † | Bishop of Ariano, Italy |
| 36.2 | Appointed | Anton de Révay † | Auxiliary Bishop of Esztergom, Hungary | Bishop of Nitra, Slovakia |
| 36.2 | Appointed | Anton de Révay † | Titular Bishop of Milevum | Bishop of Nitra, Slovakia |
| 51.9 | Installed | Antonino Sersale † | Cardinal-Priest of Santa Pudenziana | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 48.1 | Appointed | Francesco Saverio Stabile † | Bishop of Venafro, Italy |
| 58.6 | Installed | Giovanni Francesco Stoppani † | Cardinal-Priest of Santi Silvestro e Martino ai Monti | Cardinal, Cardinal-Bishop of Palestrina |
| 84.5 | Died | Caius Asterius Toppi † | Titular Bishop of Milevum |
| 23 May | 42.8 | Ordained Bishop | Giacomo Lieto † | Archbishop of Lanciano, Italy |
| 54.6 | Ordained Bishop | Domenico Saverio Pulci-Doria † | Bishop of Ariano, Italy |
| 48.1 | Ordained Bishop | Francesco Saverio Stabile † | Bishop of Venafro, Italy |
| 24 May | 79.6 | Died | Antonino Serafino Camarda, O.P. † | Bishop of Rieti, Italy |
| Jun | 63.5 | Died | Onofrio Pini † | Bishop of Bagnoregio (Bagnorea), Italy |
| 36.2 | Ordained Bishop | Anton de Révay † | Titular Bishop of Milevum | Bishop of Nitra, Slovakia |
| 1 Jun | 49.8 | Died | Giambattista Pensa † | Bishop of Fossano, Italy |
| 2 Jun | 42.7 | Ordained Deacon | Flavio Chigi (Jr.) † | Deacon of Sant’Angelo in Pescheria | Cardinal, Prefect of the Congregation of (Sacred) Rites |
| 53.8 | Ordained Bishop | José Vidal de Moctezuma y Tobar, O. de M. † | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 4 Jun | 22.8 | Ordained Priest | Benedetto Maria dei Monti Sanfelice, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Nocera de’ Pagani, Italy |
| 58.5 | Resigned | Fabrizio Serbelloni † | Apostolic Nuncio to Emperor | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 8 Jun | 25.3 | Ordained Priest | Gregorio Alessandri † | Priest | Bishop of Cortona, Italy |
| 25.4 | Ordained Priest | Pellegrino Consalvi † | Priest | Bishop of Fano, Italy |
| 32.6 | Ordained Deacon | Jan Szyjkowski † | Deacon | Auxiliary Bishop of Lutsk (Łuck), Ukraine |
| 12 Jun | 56.5 | Died | Benedetto Gaetani † | Bishop of Colle di Val d’Elsa, Italy |
| 13 Jun | 67.5 | Died | Joseph-Alphonse de Valbelle de Tourves † | Bishop of Saint-Omer, France |
| 16 Jun | 33.3 | Ordained Bishop | Jean-Armand de Bessuéjouls Roquelaure † | Bishop of Senlis, France | Archbishop Emeritus of Mechelen, Belgium |
| 43.1 | Ordained Bishop | Jan-Robert Caïmo † | Bishop of Brugge {Bruges}, Belgium |
| 32.9 | Ordained Bishop | Aymard-Chrétien-François-Michel de Nicolay † | Bishop of Verdun, France |
| 17 Jun | 58.5 | Died | Ildefonso del Tufo, O.S.B. † | Bishop Emeritus of Gerace, Italy |
| 20 Jun | | Born | Paul-Ambroise Frère de Villefrancon † | | Archbishop of Besançon, France |
| 23 Jun | 32.6 | Ordained Priest | Jan Szyjkowski † | Priest | Auxiliary Bishop of Lutsk (Łuck), Ukraine |
| 38.7 | Ordained Bishop | Benedetto Zuzzeri (Zuzeri) † | Archbishop of Sardica (Sredek, Sofia), Bulgaria |
| 24 Jun | 51.4 | Ordained Bishop | Ferdinand Camacho y Rojas † | Bishop of Santa Marta, Colombia |
| 26 Jun | | Born | Péter Klobusiczky † | | Archbishop of Kalocsa, Hungary |
| 29 Jun | 41.7 | Selected | François-Joseph de Brunes de Monlouet † | Bishop of Saint-Omer, France |
| 50.6 | Selected | Jacques-Marie de Caritat de Condorcet † | Bishop of Auxerre, France | Bishop of Lisieux, France |
| 55.4 | Selected | Pierre-Annet de Pérouse † | Bishop of Gap, France |
| 75.2 | Died | Matteo Trigona † | Bishop Emeritus of Siracusa, Italy |
| 30 Jun | 44.9 | Ordained Bishop | Augstín González Pisador † | Titular Bishop of Tricomia | Bishop of Oviedo, Spain |
| Jul | 55.7 | Resigned | Ignazio Michele Crivelli † | Apostolic Nuncio to Flanders, Belgium | Cardinal, Titular Archbishop of Caesarea in Cappadocia |
| 1 Jul | 68.9 | Died | Francesco Carafa † | Bishop of Nardò, Italy |
| 2 Jul | 58.1 | Died | Giuseppe di Marsciano † | Bishop of Orvieto, Italy |
| 4 Jul | 51.5 | Selected | Charles-Marie de Quélen † | Titular Bishop of Bethleem |
| Born | Giulio Rossi † | | Bishop of Pescia, Italy |
| 6 Jul | 54.4 | Died | Michele Maria Vincentini † | Titular Archbishop of Teodosia |
| 7 Jul | 27.7 | Ordained Priest | Joannes Karski † | Priest | Auxiliary Bishop of Gniezno, Poland |
| 9 Jul | 63.9 | Died | Marino Bozzatini † | Bishop of Novigrad (Cittanova), Croatia |
| 76.9 | Died | Felice Leone, O.E.S.A. † | Bishop of Avellino e Frigento, Italy |
| 11 Jul | 53.1 | Selected | Johann Philipp von Walderdorff † | Coadjutor Archbishop of Trier, Germany | Archbishop |
| 15 Jul | | Born | Giacomo Ranghiasci † | | Bishop of San Severino (Marche), Italy |
| 20 Jul | | Born | Santiago Bencomo y Rodríguez † | | Bishop-Elect of Astorga, Spain |
| 21 Jul | 62.2 | Ordained Bishop | Francisco Xavier Aranha † | Titular Bishop of Thermopylae | Bishop of Olinda, Brazil |
| 22 Jul | 45.5 | Appointed | Antonio Biglia † | Titular Archbishop of Corinthus | Apostolic Nuncio to Florence (Tuscany), Italy |
| 37.3 | Appointed | Giuseppe Maria Carafa, C.R. † | Bishop of Trivento, Italy | Bishop Emeritus of Mileto, Italy |
| 52.8 | Installed | Enrico Enríquez † | Cardinal, Cardinal-Priest of Sant’Eusebio |
| Confirmed | Mikaël Petros III Kasparian † | Patriarch of Cilicia (Armenian), Lebanon |
| 48.4 | Appointed | Giorgio Maria Lascaris, C.R. † | Titular Archbishop of Teodosia | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 62.3 | Appointed | Giuseppe Maria Carlo Antonio Marini, O.E.S.A. † | Titular Bishop of Thagaste |
| 46.7 | Appointed | Giuseppe Antonio Piperni † | Bishop of Caiazzo, Italy |
| 58.7 | Installed | Fabrizio Serbelloni † | Cardinal-Priest of Santo Stefano al Monte Celio | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 62.1 | Appointed | Giacinto Silvestri † | Bishop of Orvieto, Italy |
| 62.5 | Appointed | Domenico Tatis, O.S.B. † | Bishop of Brugnato, Italy |
| 49.1 | Appointed | Antonio Tripcovich † | Bishop of Nona (Nin), Croatia |
| 24 Jul | | Born | Józef Arnulf Giedroyć † | | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 25 Jul | 37.3 | Ordained Bishop | Giuseppe Maria Carafa, C.R. † | Bishop of Trivento, Italy | Bishop Emeritus of Mileto, Italy |
| 57.9 | Died | Ippolito Graziadei † | Bishop of Città della Pieve, Italy |
| 68.5 | Ordained Bishop | José Manoel da Câmara † | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 62.3 | Ordained Bishop | Giuseppe Maria Carlo Antonio Marini, O.E.S.A. † | Titular Bishop of Thagaste |
| 46.7 | Ordained Bishop | Giuseppe Antonio Piperni † | Bishop of Caiazzo, Italy |
| 28 Jul | 45.5 | Ordained Bishop | Antonio Biglia † | Titular Archbishop of Corinthus | Apostolic Nuncio to Florence (Tuscany), Italy |
| 62.5 | Ordained Bishop | Domenico Tatis, O.S.B. † | Bishop of Brugnato, Italy |
| 49.1 | Ordained Bishop | Antonio Tripcovich † | Bishop of Nona (Nin), Croatia |
| Aug | 25.5 | Ordained Bishop | Joseph VI Estephan † | Bishop of Beirut {Bairut} (Maronite), Lebanon | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| 58.3 | Died | Giacomo Guacci † | Bishop of Belcastro, Italy |
| 3 Aug | 84.2 | Died | Jean-Baptiste Surian † | Bishop of Vence, France |
| 6 Aug | 41.0 | Died | Martino Ignazio Caracciolo † | Titular Archbishop of Chalcedon |
| 8 Aug | | Born | Francesco Maria de Luca, O.F.M. Obs. † | | Archbishop of Lanciano (e Ortona), Italy |
| 15 Aug | 67.6 | Died | Francesco Iorio (Jorio) † | Bishop of Monopoli, Italy |
| 17 Aug | 45.6 | Appointed | Antonio Biglia † | Apostolic Nuncio to Florence (Tuscany), Italy |
| 18 Aug | 51.6 | Died | Ferdinand Camacho y Rojas † | Bishop of Santa Marta, Colombia |
| 20 Aug | | Born | Bernardo Bernardino Beltrão Freire † | | Bishop of Pinhel, Portugal |
| 21 Aug | | Born | Rafael de La Vara † | | Archbishop of Guatemala |
| 24 Aug | 33.9 | Selected | Jacques de Grasse † | Bishop of Vence, France | Bishop of Angers, France |
| 40.8 | Resigned | Girolamo Spínola † | Apostolic Nuncio to Switzerland | Cardinal, Cardinal-Bishop of Palestrina |
| 25 Aug | | Born | Jean-Baptiste Dubois † | | Bishop of Dijon, France |
| 28 Aug | | Born | Sigmund Christoph von Waldburg-Zeil-Trauchburg † | | Bishop Emeritus of Chiemsee, Germany |
| 30 Aug | | Born | Adrianus van Dongen † | | Vicar Apostolic of Breda, Netherlands |