| Date | Age | Event | Bishop | Title | Current Title |
| May | 74.2 | Died | Giuseppe Antonio Silvestri † | Bishop of Termoli, Italy |
| Born | Onufry Kajetan Szembek † | | Bishop of Płock, Poland |
| 1 May | | Born | Charles Plowden, S.J. † | | Priest of Society of Jesus |
| 3 May | 53.8 | Ordained Deacon | Johann Friedrich Karl von Ostein † | Deacon | Archbishop of Mainz, Germany |
| 5 May | 53.8 | Ordained Priest | Johann Friedrich Karl von Ostein † | Priest | Archbishop of Mainz, Germany |
| 12 May | 23.1 | Ordained Deacon | Karl Friedrich von Zehmen † | Deacon of Eichstätt, Germany | Auxiliary Bishop of Warmia (Ermland), Poland |
| 16 May | 53.7 | Selected | Pio Tommaso Milante, O.P. † | Bishop of Castellammare di Stabia, Italy |
| 17 May | 74.5 | Resigned | Cherubino Tommaso Nobilione, O.P. † | Bishop of Andria, Italy | Bishop Emeritus |
| 66.0 | Died | Francesco Antonio Salomone (Salamone) † | Bishop of Venosa, Italy |
| 19 May | 22.9 | Ordained Priest | Domenico Maria Clavarini, O.P. † | Priest of Order of Friars Preachers | Bishop of Ventimiglia, Italy |
| 69.3 | Ordained Bishop | Andrea Duranti † | Titular Bishop of Chytri |
| 59.3 | Ordained Bishop | Guillaume-Philippe de Herzelles † | Bishop of Antwerpen {Antwerp, Anvers}, Belgium |
| 20 May | 59.8 | Confirmed | Domingo Pantaleón Álvarez de Abreu † | Archbishop (Personal Title) of Tlaxcala (Puebla de los Angeles), México | Bishop |
| 44.4 | Appointed | Domenico Anelli † | Bishop of Andria, Italy |
| 75.2 | Appointed | Vincenzo Bichi † | Cardinal-Priest of San Silvestro in Capite | Cardinal, Cardinal-Bishop of Frascati |
| 46.0 | Appointed | Francesco Scipione Maria Borghese † | Cardinal-Priest of Santa Maria in Trastevere | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 62.6 | Confirmed | Jan-Baptist de Castillion † | Bishop of Brugge {Bruges}, Belgium |
| 47.5 | Appointed | Francesco Antonio Cavalcanti, C.R. † | Archbishop of Cosenza, Italy |
| 57.4 | Appointed | Giuseppe Giusti † | Bishop of Venosa, Italy |
| 59.4 | Appointed | Pedro González García † | Bishop of Ávila, Spain |
| 54.5 | Appointed | Ettore Molza † | Bishop of Modena, Italy |
| 46.4 | Confirmed | Ignacio Padilla Estrada (Guardiola), O.S.A. † | Archbishop of Santo Domingo, Dominican Republic | Bishop of Yucatán (Mérida), México |
| 22 May | 48.3 | Installed | Mateo de Zamora y Penagos, O.F.M. † | Bishop of Yucatán (Mérida), México |
| 24 May | | Born | Pietro Leopardi † | | Titular Bishop of Akka |
| 27 May | 23.5 | Ordained Priest | Tadeusz Benedykt Feliks Towiański, O.F.M. Conv. † | Priest of Order of Friars Minor Conventual | Auxiliary Bishop of Vilnius, Lithuania |
| 28 May | 74.5 | Died | Carlo Cosenza † | Bishop of Vico Equense, Italy |
| Born | Antonio Luis Gaona, O.S. † | | Titular Bishop of Olba |
| 30 May | | Born | Claude André † | | Bishop Emeritus of Quimper, France |
| Jun | 73.4 | Died | Tomás Vidal y de Nin, O. Cist. † | Archbishop of Messina, Italy |
| 2 Jun | 47.6 | Ordained Bishop | Francesco Antonio Cavalcanti, C.R. † | Archbishop of Cosenza, Italy |
| 63.3 | Died | Julián Domínguez y Toledo † | Bishop of Valladolid, Spain |
| 57.4 | Ordained Bishop | Giuseppe Giusti † | Bishop of Venosa, Italy |
| 54.6 | Ordained Bishop | Ettore Molza † | Bishop of Modena, Italy |
| 8 Jun | 12.5 | Ordained Deacon | Felix Willem Antonius Brenart † | Deacon | Bishop of Brugge {Bruges}, Belgium |
| 23.9 | Ordained Priest | Karl Johann von Herberstein † | Priest of Trento, Italy | Bishop of Ljubljana (Laybach; Laibach), Slovenia |
| 25.1 | Ordained Priest | Ivan Krstitelj Paxy † | Priest | Bishop of Zagreb (Agram), Croatia |
| 23.1 | Ordained Priest | Karl Friedrich von Zehmen † | Priest of Eichstätt, Germany | Auxiliary Bishop of Warmia (Ermland), Poland |
| 9 Jun | 39.9 | Ordained Bishop | José Dantas Barbosa † | Titular Archbishop of Lacedaemonia | Auxiliary Bishop of Lisboa {Lisbon}, Portugal |
| 68.0 | Ordained Bishop | João da Silva Ferreira † | Bishop of Tanger, Morocco |
| 39.3 | Ordained Bishop | Francisco de Mello, O.F.M. Ref. † | Archbishop of Goa, India | Bishop of Faro {Algarve}, Portugal |
| 14 Jun | 52.1 | Died | Pedro de Villas Boas e Sampaio † | Bishop of Elvas, Portugal |
| 19 Jun | | Born | Agustín Iñigo Abad Lasierra, O.S.B. † | | Bishop of Barbastro, Spain |
| Born | Antonio Lamberto Rusconi † | | Cardinal, Bishop of Imola, Italy |
| 22 Jun | | Born | Giovanni Rinuccini † | | Cardinal, Cardinal-Deacon of San Giorgio in Velabro |
| 26 Jun | 54.7 | Selected | Baltazar de Faria Villas-Boas † | Bishop of Elvas, Portugal |
| 27 Jun | 49.7 | Selected | Francisco Placido de Béjar, O.S.Bas. † | Bishop of Puerto Rico (Porto Rico) | Bishop-Elect |
| 29 Jun | 59.4 | Died | François-Honoré-Lancelot de Casaubon de Maniban † | Archbishop of Bordeaux, France |
| 30 Jun | | Died | Giovanni Battista Scarselli † | Auxiliary Bishop of Bologna, Italy |
| 3 Jul | 47.4 | Selected | Gian Pietro Solaro † | Bishop of Vercelli, Italy |
| 4 Jul | 16.0 | Professed | Antonio de Torres, O.S.B. † | Member of Order of Saint Benedict | Bishop of Sessa Aurunca, Italy |
| 8 Jul | 45.5 | Selected | John Brett, O.P. † | Bishop of Killala, Ireland | Bishop of Elphin, Ireland |
| Died | Bernard O’Rourke † | Bishop of Killala, Ireland |
| 9 Jul | | Born | Marcello Maria Benci † | | Bishop of Colle di Val d’Elsa, Italy |
| Born | Jean Baptiste Robert van Velde de Melroy et Sart-Bomal † | | Bishop Emeritus of Roermond, Netherlands |
| 10 Jul | 56.1 | Died | Jean-Mathias de Barthélemy de Gramont de Lanta † | Bishop of Perpignan-Elne, France |
| 11 Jul | 65.8 | Died | Andrea Maddalena, C.R.M. † | Archbishop of Brindisi, Italy |
| 12 Jul | 78.5 | Died | Jacques-Bénigne Bossuet † | Bishop Emeritus of Troyes, France |
| 13 Jul | | Born | Antonio David † | | Bishop of Narni, Italy |
| 14 Jul | 62.8 | Ordained Bishop | Jan-Baptist de Castillion † | Bishop of Brugge {Bruges}, Belgium |
| 15 Jul | 46.0 | Appointed | Felice Amato † | Bishop of Ischia, Italy |
| 40.7 | Appointed | Martín Barcia Carrascal † | Bishop of Ceuta, Spain | Bishop of Córdoba, Spain |
| 50.0 | Appointed | Luigi d’Alessandro † | Archbishop (Personal Title) of Alessano, Italy | Archbishop of Bari (-Canosa), Italy |
| 33.2 | Appointed | Vincent Drago † | Bishop of Kotor (Cattaro), Montenegro |
| 61.9 | Appointed | Nicolò Carmine Falcone † | Archbishop of Santa Severina, Italy |
| 28.3 | Confirmed | Jean-Georges Lefranc de Pompignan † | Bishop of Le Puy-en-Velay, France | Archbishop Emeritus of Vienne, France |
| 42.1 | Appointed | Girolamo Lorenzi (de Laurentiis) † | Bishop of Acerno, Italy |
| 53.9 | Confirmed | Pio Tommaso Milante, O.P. † | Bishop of Castellammare di Stabia, Italy |
| 40.5 | Confirmed | Juan Nieto Polo del Aguila † | Bishop of Santa Marta, Colombia | Bishop of Quito, Ecuador |
| 30.8 | Confirmed | François-Joseph-Gaston de Partz de Pressy † | Bishop of Boulogne (-Sur-Mer), France |
| 49.1 | Appointed | Isidoro Pitellia, O.M. † | Bishop of Termoli, Italy |
| 46.9 | Appointed | Giuseppe Pozzobonelli † | Cardinal, Archbishop of Milano {Milan}, Italy |
| 47.5 | Confirmed | Gian Pietro Solaro † | Bishop of Vercelli, Italy |
| 39.3 | Appointed | Alfonso Sozi Carafa, C.R.S. † | Bishop of Vico Equense, Italy | Bishop of Lecce, Italy |
| 50.7 | Confirmed | Joseph Anselme François Werbrouck † | Bishop of Roermond, Netherlands | Bishop of Antwerpen {Antwerp, Anvers}, Belgium |
| 38.5 | Appointed | Johann Kaspar von Wolkenstein-Rodeneck † | Auxiliary Bishop of Trento, Italy |
| 38.5 | Appointed | Johann Kaspar von Wolkenstein-Rodeneck † | Titular Bishop of Dragobitia (Drago) | Auxiliary Bishop of Trento, Italy |
| 16 Jul | | Born | Jean-Jacques Bouguet, C.S.Sp. † | | Prefect Emeritus of Iles Saint-Pierre et Miquelon |
| 53.9 | Ordained Bishop | Pio Tommaso Milante, O.P. † | Bishop of Castellammare di Stabia, Italy |
| 20 Jul | | Born | Pierre Denaut † | | Bishop of Québec, Canada |
| 21 Jul | 31.3 | Ordained Deacon | Petru Pavel Aaron, O.S.B.M. † | Deacon of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Făgăraş (Romanian), Romania |
| 42.1 | Ordained Bishop | Girolamo Lorenzi (de Laurentiis) † | Bishop of Acerno, Italy |
| 46.9 | Ordained Bishop | Giuseppe Pozzobonelli † | Cardinal, Archbishop of Milano {Milan}, Italy |
| 25 Jul | 24.0 | Ordained Priest | Giovanni Morosini, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Verona, Italy |
| 49.2 | Ordained Bishop | Isidoro Pitellia, O.M. † | Bishop of Termoli, Italy |
| 39.3 | Ordained Bishop | Alfonso Sozi Carafa, C.R.S. † | Bishop of Vico Equense, Italy | Bishop of Lecce, Italy |
| 26 Jul | 46.1 | Ordained Bishop | Felice Amato † | Bishop of Ischia, Italy |
| 40.8 | Ordained Bishop | Martín Barcia Carrascal † | Bishop of Ceuta, Spain | Bishop of Córdoba, Spain |
| 47.5 | Ordained Bishop | Gian Pietro Solaro † | Bishop of Vercelli, Italy |
| 27 Jul | 45.5 | Confirmed | John Brett, O.P. † | Bishop of Killala, Ireland | Bishop of Elphin, Ireland |
| Appointed | Lattanzio Felice Sega † | Auxiliary Bishop of Bologna, Italy |
| Appointed | Lattanzio Felice Sega † | Titular Bishop of Amathus in Palaestina | Auxiliary Bishop of Bologna, Italy |
| 28 Jul | 33.2 | Ordained Bishop | Vincent Drago † | Bishop of Kotor (Cattaro), Montenegro |
| 24.3 | Ordained Priest | Gabriel Jan Podoski † | Priest | Archbishop of Gniezno, Poland |
| 29 Jul | 54.8 | Confirmed | Baltazar de Faria Villas-Boas † | Bishop of Elvas, Portugal |
| 54.0 | Confirmed | Johann Friedrich Karl von Ostein † | Archbishop of Mainz, Germany |
| 31 Jul | | Born | Nicola Casali † | | Bishop of Sarsina, Italy |
| 4 Aug | 31.4 | Ordained Priest | Petru Pavel Aaron, O.S.B.M. † | Priest of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Făgăraş (Romanian), Romania |
| 9 Aug | 36.5 | Died | Antonio de Castro † | Bishop of Malacca, Singapore |
| 61.4 | Died | Francisco Pérez Lozano, O.S.Bas. † | Bishop of Puerto Rico (Porto Rico) |
| 10 Aug | 74.6 | Died | Lodovico Pico Della Mirandola † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 11 Aug | 28.4 | Ordained Bishop | Jean-Georges Lefranc de Pompignan † | Bishop of Le Puy-en-Velay, France | Archbishop Emeritus of Vienne, France |
| 15 Aug | 18.2 | Professed | Ludwik Stanisław Górski, Sch. P. † | Member of Order of the Pious Schools | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 18 Aug | | Ordained Bishop | Lattanzio Felice Sega † | Titular Bishop of Amathus in Palaestina | Auxiliary Bishop of Bologna, Italy |
| 19 Aug | 66.9 | Died | Damian Hugo Philipp von Schönborn Bushein † | Cardinal, Bishop of Speyer, Germany |
| 20 Aug | | Died | Louis Marie Maggi, O.P. † | Vicar Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China |
| 37.1 | Appointed | Joachim-Enjobert de Martiliat, M.E.P. † | Vicar Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China |
| 38.6 | Selected | Thomas Stritch † | Coadjutor Bishop of Waterford and Lismore, Ireland |