| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 57.0 | Resigned | Luc d’Aquin † | Bishop of Fréjus, France | Bishop Emeritus |
| 54.3 | Resigned | François Bouthillier de Chavigny † | Bishop of Troyes, France | Bishop Emeritus |
| 21.6 | Ordained Priest | Otto Honorius von Egkh und Hungersbach † | Priest of Olomouc (Olmütz), Czech Republic | Auxiliary Bishop |
| 44.3 | Died | Epifanio Fanelli, O.S.B. † | Bishop of Cefalonia e Zante, Greece |
| 41.0 | Appointed | Antoine Girard de La Bornat (La Bournat) † | Bishop of Toul, France | Bishop of Poitiers, France |
| 17.6 | Professed | Winimar Knippschild, O.S.B. † | Member of Order of Saint Benedict | Auxiliary Bishop of Paderborn, Germany |
| Born | François de Lastic de Saint-Jal † | Limousin | Bishop of Castres, France |
| Born | Cayetano Marcellano y Agramont † | Cuzco | Archbishop of La Plata o Charcas, Bolivia |
| 56.0 | Ordained Bishop | José Martínez del Villar † | Bishop of Barbastro, Spain |
| Born | Mihály Emánuel Olsavszky, O.S.B.M. † | | Vicar Apostolic of Mukachevo (Munkács) (Ruthenian), Ukraine |
| 23.5 | Ordained Priest | Michele Orsi † | Priest | Archbishop of Otranto, Italy |
| Born | Pedro Anselmo Sánchez de Tagle † | Santillana, Spain | Bishop of Michoacán, México |
| 60.0 | Died | Andrea Arcadio Stanila † | Titular Bishop |
| 63.8 | Died | Alonso Vargas y Barca, O.S.A. † | Bishop of Comayagua, Honduras |
| Jan | | Born | Adam Wojna Oranski † | Vladimirien | Auxiliary Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 2 Jan | | Born | Étienne-René Potier de Gesvres † | Paris | Cardinal, Bishop Emeritus of Beauvais, France |
| 10 Jan | | Born | Vincenzo Antonio Maria Muscettola † | Molinara | Bishop of Recanati e Loreto, Italy |
| 11 Jan | | Died | Daniele Giustiniani † | Bishop of Bergamo, Italy |
| 12 Jan | 29.2 | Appointed | Louis Thomas d’Acquin † | Bishop of Fréjus, France | Bishop of Sées, France |
| 67.0 | Appointed | Otto de la Bourde † | Bishop of Gurk, Austria |
| 13 Jan | 36.0 | Appointed | Sigmund Carl von Castel-Barco † | Bishop of Chiemsee, Germany |
| 14 Jan | 45.9 | Appointed | Andrea Ariani † | Bishop of Andria, Italy |
| 29.6 | Confirmed | Charles-Joachim Colbert de Croissy † | Bishop of Montpellier, France |
| 78.3 | Appointed | Lorenzo Fabbri (Fabri), O.F.M. Conv. † | Bishop of Fossombrone, Italy |
| 35.3 | Appointed | Juan Lorenzo Ibáńez de Arilla, O.S.A. † | Bishop of Tropea, Italy |
| 58.0 | Confirmed | Andras József Illyés † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| 53.9 | Appointed | Francesco Antonio Volturale † | Bishop of Vieste, Italy |
| 15 Jan | 49.0 | Appointed | Charles-Marin Labbé, M.E.P. † | Coadjutor Vicar Apostolic of Cochin {Cocincina}, Viet Nam |
| Appointed | Bernardus Martineau † | Titular Bishop of Zabulon |
| 16 Jan | 67.0 | Died | Fortunato Ilario Carafa della Spina † | Cardinal, Bishop of Aversa, Italy |
| 19 Jan | 55.0 | Died | Laurentius Fergusius Lea † | Bishop of Derry, Ireland |
| 20 Jan | 45.9 | Ordained Bishop | Andrea Ariani † | Bishop of Andria, Italy |
| 78.3 | Ordained Bishop | Lorenzo Fabbri (Fabri), O.F.M. Conv. † | Bishop of Fossombrone, Italy |
| 35.3 | Ordained Bishop | Juan Lorenzo Ibáńez de Arilla, O.S.A. † | Bishop of Tropea, Italy |
| 53.9 | Ordained Bishop | Francesco Antonio Volturale † | Bishop of Vieste, Italy |
| 26 Jan | | Born | Polycarpo de Sousa (Souza), S.J. † | Coimbra, Portugal | Bishop of Peking [Beijing], China |
| 29 Jan | 55.7 | Selected | Franciscus Jany † | Bishop of Sirmio (Srijem; Sirmium), Croatia |
| 10 Feb | 33.6 | Ordained Priest | Bartolomeo Visinio Rubini, O.F.M. † | Priest of Order of Friars Minor | Coadjutor Bishop of Anagni, Italy |
| 16 Feb | 51.3 | Died | Bernardino Plastina, O.M. † | Bishop of Oppido Mamertina, Italy |
| 17 Feb | | Born | Charles-Antoine de la Roche-Aymon † | Mainsat | Cardinal, Archbishop of Reims, France |
| 21 Feb | | Born | Bonifatius (Giovanni Giuseppe) Cecotti, O.F.M. † | Gorizia | Bishop of Pedena, Austria |
| 25 Feb | 54.6 | Appointed | Innico Caracciolo (Jr.) † | Cardinal, Bishop of Aversa, Italy |
| 73.0 | Appointed | Carlo Cuzzolini † | Bishop of Pozzuoli, Italy |
| 52.7 | Appointed | Barnaba De Castro, O.S.A. † | Archbishop of Lanciano, Italy | Archbishop of Brindisi, Italy |
| 57.1 | Appointed | Mikołaj Stanisław Święcicki † | Bishop of Kyiv and Chernihiv (Kijów and Czernihow), Ukraine | Bishop of Poznań, Poland |
| 2 Mar | 41.4 | Ordained Priest | Fabritius Aurelius de Agostini † | Priest | Titular Archbishop of Amasea |
| 24.1 | Ordained Priest | Tommaso Marino, O.P. † | Priest of Order of Friars Preachers | Bishop of Siracusa, Italy |
| 23.1 | Ordained Priest | Gaspare Pizzolanti, O. Carm. † | Priest of Order of Our Lady of Mt. Carmel | Bishop of Cervia, Italy |
| 3 Mar | 52.8 | Ordained Bishop | Barnaba De Castro, O.S.A. † | Archbishop of Lanciano, Italy | Archbishop of Brindisi, Italy |
| 58.2 | Ordained Bishop | Andras József Illyés † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| 5 Mar | 23.1 | Ordained Priest | Tommaso Alessio de’ Rossi † | Priest | Bishop of Teramo, Italy |
| 6 Mar | 71.9 | Died | Johann Euchar von Schenk von Castell † | Bishop of Eichstätt, Germany |
| 9 Mar | 66.0 | Died | Wilhelm von Vintler von Runkelstein † | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 23 Mar | 26.4 | Ordained Priest | Ladislav Szörényi † | Priest | Bishop of Sirmio (Srijem; Sirmium), Croatia |
| 24 Mar | 54.7 | Ordained Bishop | Innico Caracciolo (Jr.) † | Cardinal, Bishop of Aversa, Italy |
| 63.2 | Died | Paul-Philippe de Chaumont † | Bishop Emeritus of Acqs (Dax), France |
| Born | Louis-César-Constantin de Rohan-Guémené-Montbazon † | Paris | Cardinal, Bishop of Strasbourg, France |
| 26 Mar | | Born | Pietro Paolo Carta † | Silanus | Bishop of Ampurias e Civita, Italy |
| Born | José Gómez † | Rillo | Bishop of Zamora, Spain |
| Born | Ferdinand Joseph Gabriel von Sarnthein † | Innsbruck | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 27 Mar | 43.8 | Appointed | Filippo de Cordova (de’ duchi di Suessa) † | Bishop of Guardialfiera (Guardia), Italy |
| 37.2 | Appointed | Michele Maria Dentice † | Bishop of Mottola (Motula), Italy |
| 61.2 | Appointed | Tomás Reluz, O.P. † | Bishop of Oviedo, Spain |
| 39.5 | Appointed | Giuseppe Rottario (Rovero) † | Bishop of Alba (Pompea), Italy |
| 54.2 | Appointed | François Marie Sacco, C.R. † | Bishop of Brugnato, Italy |
| 6 Apr | 24.1 | Ordained Priest | Bartolomeo Pucci Franceschi † | Priest | Bishop of Pescia, Italy |
| 7 Apr | 31.8 | Selected | Denis-François Bouthillier de Chavigny † | Bishop of Troyes, France | Archbishop of Sens, France |
| 8 Apr | 43.8 | Ordained Bishop | Filippo de Cordova (de’ duchi di Suessa) † | Bishop of Guardialfiera (Guardia), Italy |
| 37.2 | Ordained Bishop | Michele Maria Dentice † | Bishop of Mottola (Motula), Italy |
| 39.5 | Ordained Bishop | Giuseppe Rottario (Rovero) † | Bishop of Alba (Pompea), Italy |
| 11 Apr | | Born | Giuseppe Agostino Delbecchi, Sch. P. † | Oneglia | Archbishop of Cagliari, Italy |
| 14 Apr | 58.7 | Died | Custodio do Pinho † | Titular Bishop of Hierapolis in Isauria |
| 57.3 | Ordained Bishop | Mikołaj Stanisław Święcicki † | Bishop of Kyiv and Chernihiv (Kijów and Czernihow), Ukraine | Bishop of Poznań, Poland |
| 23.5 | Ordained Priest | Gaetano Zuanelli † | Priest | Bishop of Belluno, Italy |
| 16 Apr | 66.6 | Selected | Johann Martin von Eyb † | Bishop of Eichstätt, Germany |
| 20 Apr | | Born | Gaspar Negri † | Venezia | Bishop of Poreč (Parenzo), Croatia |
| Born | Jean-Antoine de Tinseau † | Besançon | Bishop of Nevers, France |
| 22 Apr | 54.3 | Died | Manuel de Alba † | Bishop of Barcelona, Spain |
| 27 Apr | 67.3 | Ordained Bishop | Otto de la Bourde † | Bishop of Gurk, Austria |
| May | | Born | Stanisław Rajmund Jezierski, O.P. † | Lukoviensi | Bishop of Bacău, Romania |
| Born | Józef Eustachy Szembek † | Grodziecen | Bishop of Płock, Poland |
| 66.3 | Died | Francesco Antonio Triveri, O.F.M. Conv. † | Bishop of Melfi e Rapolla, Italy |
| 1 May | 28.1 | Ordained Priest | Faustino Giuseppe Griffoni † | Priest | Bishop of Crema, Italy |
| 3 May | 51.6 | Ordained Priest | Diego Montero del Aguila † | Priest | Bishop of Trujillo, Peru |
| 5 May | 36.3 | Ordained Bishop | Sigmund Carl von Castel-Barco † | Bishop of Chiemsee, Germany |
| 9 May | 51.4 | Died | Jean-Baltazar de Cabanes de Viens † | Bishop of Vence, France |
| 10 May | 77.5 | Appointed | Jobst Edmund von Brabeck † | Vicar Apostolic of Nordic Missions, Germany | Bishop of Hildesheim, Germany |
| 12 May | 88.4 | Died | Georges d’Aubusson de la Feuillade † | Bishop of Metz, France |
| 59.4 | Died | Francesco Maria Moles, C.R. † | Bishop Emeritus of Nola, Italy |
| 13 May | 53.4 | Appointed | Miguel Bayot, O.F.M. † | Bishop of Cebu, Philippines |
| 15 May | | Born | Jean-Chrétien de Macheco de Prémeaux † | Dijon | Bishop of Périgueux (Vesuna), France |
| 17 May | 65.0 | Died | Michael Ludovicus Tevenardi, O.P. † | Bishop of Saluzzo, Italy |
| 20 May | | Born | Francesco Scipione Maria Borghese † | Rome, Italy | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 21 May | 72.4 | Died | Jan Stanisław Zbąski † | Bishop of Warmia (Ermland), Poland |
| 25 May | 49.2 | Selected | François Balbe de Berton de Crillon † | Bishop of Vence, France | Archbishop of Vienne, France |
| Born | Giuseppe Filippo Felissano † | Fossano | Bishop of Asti, Italy |
| 26 May | | Born | Antônio da Madre de Deus Galvăo, O.F.M. † | Lisboa, Portugal | Bishop of Săo Paulo, Brazil |
| 31 May | 71.2 | Died | Lodovico Settala † | Bishop of Cremona, Italy |
| 1 Jun | 27.8 | Ordained Priest | Bartolomeo Gambadoro † | Priest | Bishop of Ruvo (Ruo)(di Puglia), Italy |
| 24.4 | Ordained Priest | Camillo de Mari, C.R. † | Priest of Congregation of Clerics Regular | Bishop of Aleria, France |
| 2 Jun | 48.0 | Resigned | Jan Kazimierz Denhoff † | Bishop of Cesena, Italy | Cardinal, Bishop Emeritus |
| 3 Jun | 58.0 | Appointed | Giuseppe Antonio Bertodano † | Bishop of Vercelli, Italy |
| 48.4 | Appointed | Giacinto della Calce, C.R. † | Bishop of Ariano, Italy |
| 43.7 | Appointed | Tommaso Maria Francia, O.P. † | Bishop of Oria, Italy |
| 53.4 | Appointed | José Gregorio de Rojas y Velázquez † | Bishop of León, Spain | Bishop of Plasencia, Spain |
| 55.4 | Appointed | Carolus de Tilly † | Bishop of Monopoli, Italy |
| 5 Jun | 53.4 | Appointed | Giovanni Fontana † | Bishop of Cesena, Italy |
| 6 Jun | | Born | Felice Amati † | Salerno | Bishop of Ischia, Italy |
| 9 Jun | 58.0 | Ordained Bishop | Giuseppe Antonio Bertodano † | Bishop of Vercelli, Italy |
| 48.4 | Ordained Bishop | Giacinto della Calce, C.R. † | Bishop of Ariano, Italy |
| 53.4 | Ordained Bishop | Giovanni Fontana † | Bishop of Cesena, Italy |
| 43.7 | Ordained Bishop | Tommaso Maria Francia, O.P. † | Bishop of Oria, Italy |
| 10 Jun | 29.6 | Ordained Bishop | Louis Thomas d’Acquin † | Bishop of Fréjus, France | Bishop of Sées, France |
| 18 Jun | 71.8 | Died | St. Gregorio Giovanni Gasparo Barbarigo † | Cardinal, Bishop of Padova {Padua}, Italy |
| 20 Jun | 48.0 | Died | Jan Kazimierz Denhoff † | Cardinal, Bishop Emeritus of Cesena, Italy |
| 21 Jun | | Born | Umberto Luigi Radicati † | Meatiglio Casale | Bishop of Pesaro, Italy |
| 22 Jun | 48.5 | Appointed | Patrick O’Donnelly † | Bishop of Dromore, Ireland | Bishop Emeritus |
| 25 Jun | 32.8 | Selected | Henri-Charles du Camboust de Coislin † | Bishop of Metz, France |