| Date | Age | Event | Bishop | Title | Current Title |
| 1 May | 44.2 | Ordained Bishop | José Francisco Magdaleno † | Titular Bishop of Teos | Bishop of Coria, Spain |
| 2 May | 46.8 | Selected | Franz Georg von Schönborn † | Archbishop of Trier, Germany |
| 3 May | 33.3 | Ordained Bishop | Troiano Acquaviva d’Aragona † | Titular Bishop of Philippopolis in Arabia | Cardinal, Archbishop of Monreale, Italy |
| 4 May | 77.9 | Died | Louis-Antoine de Noailles † | Cardinal, Archbishop of Paris, France |
| 6 May | 60.2 | Died | Pablo Vilana Perlas † | Archbishop of Salerno, Italy |
| 7 May | 68.3 | Died | Fabricius Gabriel (Carbry) O’Kelly † | Bishop of Elphin, Ireland |
| 8 May | 23.3 | Ordained Priest | Hyacinthus Maria Barberio, O.F.M. Conv. † | Priest of Order of Friars Minor Conventual | Bishop of Bitetto, Italy |
| Born | Ignaz Franz Stanislaus von Spaur † | | Bishop of Brixen {Bressanone}, Italy |
| 10 May | 73.4 | Selected | Charles-Gaspard-Guillaume de Vintimille du Luc † | Archbishop of Paris, France |
| 14 May | | Born | Fabijan Blasković † | | Bishop of Makarska, Croatia |
| 18 May | 55.2 | Selected | Friedrich Karl von Schönborn † | Bishop of Würzburg, Germany |
| 19 May | 37.7 | Selected | Hardouin de Châlon de Maisonnoble † | Bishop of Lescar, France |
| 24 May | 64.3 | Selected | Juan Fernández Zapata † | Bishop of León, Spain |
| 52.3 | Selected | Jan Feliks Szaniawski † | Bishop of Vilnius, Lithuania | Bishop of Chełm, Poland |
| 26 May | 26.2 | Ordained Deacon | Miguel da Anunciação (da Cunha), O.E.S.A. † | Deacon of Order of Hermits of St. Augustine | Bishop of Coimbra, Portugal |
| 40.7 | Ordained Deacon | Bernardo António de Mello Osório † | Deacon | Bishop of Guarda, Portugal |
| 29 May | 49.2 | Ordained Bishop | Melchor Angel Gutiérrez Vallejo † | Bishop of Pamplona, Spain |
| 30 May | | Born | Antun Ivan (Antonio Giovanni Giuseppe) Luković (Lucovich) † | | Bishop of Novigrad (Cittanova), Croatia |
| 31 May | 74.8 | Died | Gregorio Selleri, O.P. † | Cardinal, Cardinal-Priest of Sant’Agostino |
| 1 Jun | 71.4 | Died | Baltazar Wilksycki † | Auxiliary Bishop of Poznań, Poland |
| 2 Jun | | Born | [François-Thérèse Panisset] † | | Bishop Emeritus of [Mont-Blanc (Constitutional), France] |
| 6 Jun | | Ordained Bishop | Nicola de Simoni † | Titular Bishop of Marciana |
| 9 Jun | 33.3 | Ordained Bishop | Joseph Benedikt von Rost † | Bishop of Chur, Switzerland |
| 11 Jun | 24.3 | Ordained Priest | Charles-Prudent de Becdelièvre † | Priest | Bishop of Nîmes, France |
| 22.9 | Ordained Priest | Carlo Camuzi † | Priest | Bishop Emeritus of Capodistria (Capo d’Istria)(Koper), Slovenia |
| 76.3 | Died | José Gasch (Casch), O.M. † | Archbishop of Palermo, Italy |
| 22.8 | Ordained Priest | Ferdinand Michael Cyriakus von Hallweil † | Priest of Wien {Vienna}, Austria | Bishop of Wiener Neustadt, Austria |
| 40.8 | Ordained Priest | Bernardo António de Mello Osório † | Priest | Bishop of Guarda, Portugal |
| 25.3 | Ordained Priest | Filippo Mornati † | Priest | Bishop of Nepi e Sutri, Italy |
| 22.8 | Ordained Priest | Johann Baptist von Thurn Valsassina † | Priest of Salzburg, Austria | Bishop of Lavant, Slovenia |
| 24.4 | Ordained Priest | Johann Kaspar von Wolkenstein-Rodeneck † | Priest of Trento, Italy | Auxiliary Bishop |
| 12 Jun | | Born | José López Gil, O. Carm. † | | Bishop of Jaca, Spain |
| 13 Jun | | Born | Antoni Onufry Okęcki † | | Bishop of Poznań, Poland |
| 14 Jun | 36.1 | Selected | Jean-Baptiste-Antoine de Brancas † | Archbishop of Aix, France |
| 15 Jun | 37.1 | Selected | Gregorio de Molleda y Clerque † | Bishop of Cartagena, Colombia | Archbishop of La Plata o Charcas, Bolivia |
| 20 Jun | | Born | Domenico Spoto † | | Bishop of Cefalù, Italy |
| 21 Jun | 63.4 | Died | Louis Philippe d’Auneau de Visé † | Auxiliary Bishop of Strasbourg, France |
| 22 Jun | 26.3 | Ordained Priest | Miguel da Anunciação (da Cunha), O.E.S.A. † | Priest of Order of Hermits of St. Augustine | Bishop of Coimbra, Portugal |
| 25 Jun | | Born | Giovanni Maria Percoto, B. † | | Vicar Apostolic of Ava e Pegù, Myanmar |
| 26 Jun | 75.3 | Died | Franz Julian von Braida † | Auxiliary Bishop of Olomouc (Olmütz), Czechia |
| 27 Jun | 30.1 | Selected | Gabriel Patačić † | Bishop of Sirmio (Srijem; Sirmium), Croatia | Archbishop of Kalocsa, Hungary |
| 56.2 | Died | Franjo Vernić † | Bishop of Sirmio (Srijem; Sirmium), Croatia |
| 29 Jun | | Born | Antonín Theodor Colloredo von Wallsee und Mels † | | Cardinal, Archbishop of Olomouc, Czechia |
| 30 Jun | 59.1 | Died | Gaetano Maria Bargagli, O.S.B. † | Bishop of Chiusi, Italy |
| 41.6 | Selected | Michel de Verthamon de Chavagnac † | Bishop of Montauban, France |
| 1 Jul | | Born | José Díaz de Lamadrid, O.F.M. Obs. † | | Bishop of Quito, Ecuador |
| 3 Jul | 34.3 | Ordained Bishop | Mihael Summa † | Archbishop of Skopje, North Macedonia | Archbishop Emeritus |
| 4 Jul | | Born | Jean-François de La Marche † | | Bishop of Saint-Pol-de-Léon, France |
| 6 Jul | 57.8 | Appointed | Marco Antonio Ansidei † | Cardinal-Priest of Sant’Agostino | Cardinal, Bishop of Perugia, Italy |
| 32.1 | Elevated to Cardinal | Francesco Scipione Maria Borghese † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 60.9 | Appointed | Juan Ignacio de Castorena y Ursúa y Goyeneche † | Bishop of Yucatán (Mérida), México |
| 47.2 | Elevated to Cardinal | Carlo Vincenzo Maria Ferreri, O.P. † | Cardinal, Bishop of Vercelli, Italy |
| 60.1 | Appointed | Francesco Antonio Finy † | Cardinal-Priest of San Sisto | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 46.6 | Confirmed | Gennaro Fortunato † | Bishop of Cassano all’Jonio, Italy |
| 44.9 | Appointed | Antonio Maria Ghislieri † | Titular Bishop of Azotus |
| 51.2 | Confirmed | Juan Leandro Gómez de Parada Valdez y Mendoza † | Bishop of Santiago de Guatemala | Bishop of Guadalajara, Jalisco, México |
| 27.9 | Confirmed | Frédéric-Jérôme de La Rochefoucauld † | Cardinal, Archbishop of Bourges, France |
| 66.3 | Appointed | Matteo Roberti † | Titular Bishop of Callinicum |
| 45.5 | Appointed | François-Joseph Robuste de Laubarière † | Auxiliary Bishop of Reims, France |
| 45.5 | Appointed | François-Joseph Robuste de Laubarière † | Titular Bishop of Nitria | Auxiliary Bishop of Reims, France |
| 60.4 | Appointed | Francisco de Santiago y Calderón, O. de M. † | Bishop of Antequera, Oaxaca, México |
| 45.3 | Appointed | Lazzaro Sangiovanni † | Bishop of Bitetto, Italy |
| 8 Jul | 44.5 | Died | Anne-François-Guillaume du Cambout-Beçay † | Bishop of Tarbes, France |
| 10 Jul | 52.5 | Ordained Bishop | Francesco Maria Miceli † | Bishop of Amathus in Palaestina | Bishop of Lipari, Italy |
| 12 Jul | 47.2 | Selected | Carlo Vincenzo Maria Ferreri, O.P. † | Cardinal, Bishop of Vercelli, Italy |
| 62.7 | Selected | Jean Grillet, O.P. † | Bishop of Aosta, Italy |
| 37.5 | Selected | Ioan Inocențiu Klein (Micu), O.S.B.M. † | Bishop of Făgăraş (Romanian), Romania | Bishop Emeritus |
| 58.6 | Selected | Giovanni Battista Lomellini, O.P. † | Bishop of Saluzzo, Italy |
| 16 Jul | | Born | Manuel Ferrer y Figueredo † | | Bishop of Málaga, Spain |
| 17 Jul | 46.6 | Ordained Bishop | Andrzej Pruski † | Titular Bishop of Tanis | Auxiliary Bishop of Przemyśl, Poland |
| 22 Jul | 50.8 | Died | Giovanni Bortone † | Titular Bishop of Diospolis in Thracia |
| 24 Jul | | Born | Francisco López Sánchez † | | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 25 Jul | | Born | Valentino Mastrozzi † | | Cardinal, Cardinal-Priest of San Lorenzo in Panisperna |
| 45.4 | Ordained Bishop | Lazzaro Sangiovanni † | Bishop of Bitetto, Italy |
| 31 Jul | 46.6 | Ordained Bishop | Gennaro Fortunato † | Bishop of Cassano all’Jonio, Italy |
| Aug | 59.2 | Died | Antonio Bianchi di Gennaro, O.F.M. Obs. † | Bishop of Mottola (Motula), Italy |
| 62.5 | Died | Salvatore di Aloisio † | Bishop of Termoli, Italy |
| 60.9 | Died | Vincenzio Lessio † | Bishop of Krk (Veglia), Croatia |
| 3 Aug | 32.2 | Installed | Francesco Scipione Maria Borghese † | Cardinal-Priest of San Pietro in Montorio | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 54.1 | Appointed | Otto Honorius von Egkh und Hungersbach † | Auxiliary Bishop of Olomouc (Olmütz), Czechia |
| 54.1 | Appointed | Otto Honorius von Egkh und Hungersbach † | Titular Bishop of Thermopylae | Auxiliary Bishop of Olomouc (Olmütz), Czechia |
| 64.5 | Confirmed | Juan Fernández Zapata † | Bishop of León, Spain |
| 49.9 | Appointed | Jean Baptiste Gillis † | Auxiliary Bishop of Liège, Belgium |
| 49.9 | Appointed | Jean Baptiste Gillis † | Titular Bishop of Amyzon | Auxiliary Bishop of Liège, Belgium |
| 37.2 | Confirmed | Gregorio de Molleda y Clerque † | Bishop of Cartagena, Colombia | Archbishop of La Plata o Charcas, Bolivia |
| 63.7 | Appointed | Miguel Esteban Pérez Estremera, O.S. † | Titular Bishop of Danaba |
| 55.4 | Appointed | Friedrich Karl von Schönborn † | Apostolic Administrator of Bamberg, Germany | Bishop of Würzburg, Germany |
| 55.4 | Confirmed | Friedrich Karl von Schönborn † | Bishop of Würzburg, Germany |
| 4 Aug | 75.5 | Died | Anselmo de la Peña, O.S.B. † | Bishop of Agrigento (Girgenti), Italy |
| 7 Aug | 28.0 | Ordained Bishop | Frédéric-Jérôme de La Rochefoucauld † | Cardinal, Archbishop of Bourges, France |
| 66.4 | Ordained Bishop | Matteo Roberti † | Titular Bishop of Callinicum |
| 12 Aug | 67.2 | Died | Flaminio Dondi, O.F.M. Obs. † | Bishop of Montefeltro, Italy |
| 14 Aug | 22.9 | Ordained Priest | Francesco Maria Banditi, C.R. † | Priest of Congregation of Clerics Regular | Cardinal, Archbishop of Benevento, Italy |
| 17 Aug | 26.6 | Confirmed | Paul d’Albert de Luynes † | Bishop of Bayeux, France | Cardinal, Archbishop of Sens, France |
| 36.3 | Confirmed | Jean-Baptiste-Antoine de Brancas † | Archbishop of Aix, France |
| 43.6 | Confirmed | Atanazy Antoni Szeptycki (Sheptyskyi), O.S.B.M. † | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 57.0 | Appointed | Johann Baptist Haus † | Auxiliary Bishop of Basel, Switzerland |
| 57.0 | Appointed | Johann Baptist Haus † | Titular Bishop of Messalum | Auxiliary Bishop of Basel, Switzerland |
| 58.7 | Confirmed | Giovanni Battista Lomellini, O.P. † | Bishop of Saluzzo, Italy |
| 73.7 | Confirmed | Charles-Gaspard-Guillaume de Vintimille du Luc † | Archbishop of Paris, France |
| 21 Aug | 63.6 | Died | Juan Gómez de Neva y Frías † | Bishop of Quito, Ecuador |
| 45.6 | Ordained Bishop | François-Joseph Robuste de Laubarière † | Titular Bishop of Nitria | Auxiliary Bishop of Reims, France |
| 22 Aug | 65.2 | Selected | Dionigi Gioacchino Belmont, O.S.M. † | Bishop of Alghero, Italy |
| 24 Aug | | Born | George Hay † | | Vicar Apostolic Emeritus of Lowland District, Scotland, Great Britain |
| 47.6 | Ordained Bishop | Giovanni Paolo Maricone, C.R.S. † | Titular Bishop of Hippos |
| 32.8 | Ordained Deacon | Antonio Redetti † | Deacon | Bishop of Bergamo, Italy |
| 26 Aug | 84.9 | Died | Vincenzo Magnati † | Titular Bishop of Megara |
| 28 Aug | 32.8 | Ordained Priest | Antonio Redetti † | Priest | Bishop of Bergamo, Italy |
| 29 Aug | | Born | Dominique Maria de Santini † | | Bishop Emeritus of Nebbio, France |