| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Nicolas de Bouillé de Saint-Géran † | | Bishop of Autun, France |
| Appointed | André-Daniel de Beaupoil de Saint-Aulaire † | Bishop of Tulle, France |
| Born | Jean-Gaspard-Gilbert de Chabannas † | Riom | Bishop of Agen, France |
| 50.0 | Appointed | Gabriel de Cosnac † | Bishop of Die, France | Bishop Emeritus |
| Born | Auguste-César d'Hervilly de Devise † | | Bishop of Boulogne (-Sur-Mer), France |
| 51.0 | Ordained Bishop | Francisco Antonio de la Portilla, O.F.M. † | Bishop of Mallorca, Spain |
| 52.2 | Died | Antonio da Penha de Franca, O.A.D. † | Bishop of São Tomé e Príncipe |
| Died | Antonio del Rjos Colminarez † | Archbishop of Acerenza e Matera, Italy |
| Born | Jean-Louis de Gouyon de Vaudurand † | Vannes | Bishop Emeritus of Saint-Pol-de-Léon, France |
| Appointed | Faustino Giuseppe Griffoni † | Bishop of Crema, Italy |
| 38.2 | Ordained Bishop | Franz Anton Fürst von Harrach zu Rorau † | Bishop of Wien, Austria | Archbishop of Salzburg, Austria |
| Born | Giulio Matteo Natali † | Oletta | Bishop of Tivoli, Italy |
| Died | Sancho Pardo de Andrade de Figueroa y Cárdenas † | Bishop of Quito, Ecuador |
| 54.0 | Appointed | Michele Carlo Visdomini Cortigiani † | Bishop of Pistoia-Prato, Italy |
| 26.9 | Appointed | Franz Anton Adolph Graf von Wagensperg † | Bishop of Seckau, Austria | Bishop of Chiemsee, Germany |
| 26.9 | Ordained Bishop | Franz Anton Adolph Graf von Wagensperg † | Bishop of Seckau, Austria | Bishop of Chiemsee, Germany |
| Died | Marcantonio Zollio † | Bishop of Crema, Italy |
| 3 Jan | 71.2 | Died | Luiz de Sousa † | Cardinal, Archbishop of Lisboa, Portugal |
| 7 Jan | 38.3 | Succeeded | Franz Anton Fürst von Harrach zu Rorau † | Bishop of Wien, Austria | Archbishop of Salzburg, Austria |
| 68.0 | Died | Ernst Reichsgraf von Trautson zu Falkenstein † | Bishop of Wien, Austria |
| 8 Jan | 50.7 | Ordained Bishop | Edme Bélot, M.E.P. † | Titular Bishop of Basilinopolis | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 12 Jan | | Born | Józef Andrzej Załuski † | | Bishop of Foreign Diocese |
| 18 Jan | | Born | José Alcaraz Belluga † | Motril | Bishop Emeritus of Tarazona, Spain |
| 24 Jan | | Born | François de Crussol d'Uzès † | Montmaur | Archbishop of Toulouse, France |
| 2 Feb | 47.1 | Ordained Bishop | Raimondo Lezzoli, O.P. † | Titular Bishop of Olena | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 6 Feb | 55.1 | Appointed | Silvestre García Escalona † | Bishop of Tortosa, Spain | Bishop of Salamanca, Spain |
| 29.9 | Appointed | Luis Simões Brandão † | Bishop of Angola e Congo, Angola | Bishop Emeritus |
| 15 Feb | | Died | Jean-Armand de Rotundis de Biscaras † | Bishop of Béziers, France |
| 16 Feb | | Born | Pedro Albornoz Tapia † | Valencia | Bishop of Orihuela, Spain |
| 19 Feb | 51.1 | Ordained Bishop | Blas Serrate † | Bishop of Tarazona, Spain |
| 2 Mar | 76.2 | Died | Giuseppe de Lazzara † | Bishop of Alife, Italy |
| 4 Mar | 76.2 | Died | Sébastien de Guémadeuc † | Bishop of Saint-Malo, France |
| 7 Mar | 64.2 | Died | Felipe Galindo Chávez y Pineda, O.P. † | Bishop of Guadalajara, Jalisco, México |
| 11 Mar | 27.5 | Ordained Priest | Giovanni Antonio Guadagni, O.C.D. † | Priest | Cardinal, Bishop of Porto e Santa Rufina, Italy |
| 13 Mar | 81.2 | Died | Denis Sanguin de Livry † | Bishop of Senlis, France |
| 14 Mar | 61.1 | Appointed | Taddeo Luigi dal Verme † | Cardinal, Archbishop of Ferrara, Italy |
| 15 Mar | 60.2 | Confirmed | Diego Morcillo Rubio de Suñón de Robledo, O.SS.T. † | Bishop of León en Nicaragua | Archbishop of Lima, Peru |
| 17 Mar | | Born | Luigi Mattei † | Rome | Cardinal, Cardinal-Priest of S. Maria in Ara Coeli |
| 24 Mar | 29.5 | Professed | Antônio de Guadalupe, O.F.M. † | Member of Order of Friars Minor | Bishop of Viseu, Portugal |
| 22.0 | Ordained Priest | Angelo Maria Quirini (Querini), O.S.B. † | Priest of Order of Saint Benedict | Cardinal, Bishop of Brescia, Italy |
| 3 Apr | 63.4 | Appointed | Manuel Arias y Porres, O.S.H. † | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 52.7 | Confirmed | Tobias Johannes Becker † | Bishop of Hradec Králové, Czech Republic |
| 52.6 | Died | Johann Franz Reichsgraf von Khuen zu Liechtenberg † | Bishop of Brixen {Bressanone}, Italy |
| 43.0 | Appointed | Francisco Antonio de Borja-Centelles y Ponce de Léon † | Cardinal, Archbishop of Burgos, Spain |
| 4 Apr | 43.0 | Died | Francisco Antonio de Borja-Centelles y Ponce de Léon † | Cardinal, Archbishop of Burgos, Spain |
| 15 Apr | 45.3 | Appointed | Vincent-François des Maretz † | Bishop of Saint-Malo, France |
| 36.6 | Appointed | François-Elie de Voyer de Paulmy d'Argenson † | Bishop of Dol, France |
| 24.9 | Ordained Priest | Johann Adam Reichsgraf von Wratislaw von Mitrowitz † | Priest of Praha {Prague}, Czech Republic | Bishop of Litomĕrice, Czech Republic |
| 23.3 | Ordained Priest | Franciszek Ignacy Wysocki † | Priest of Warszawa, Poland | Auxiliary Bishop-Elect of Chelmno (Culma), Poland |
| 16 Apr | 45.3 | Appointed | Jean-François Chamillart † | Bishop of Senlis, France |
| 23 Apr | | Ordained Bishop | Jean-Louis Cotyon de La Bourdonnaye † | Bishop of Saint-Pol-de-Léon, France |
| 30 Apr | 55.3 | Ordained Bishop | Silvestre García Escalona † | Bishop of Tortosa, Spain | Bishop of Salamanca, Spain |
| Born | Antonio Sánchez Sardinero † | Talavera de la Reina | Bishop of Huesca, Spain |
| 8 May | | Born | Wojciech Stanisław Leski, O. Cist. † | Sarnowo | Bishop of Chelmno (Culma), Poland |
| 38.4 | Appointed | Ildefonso de Mena y Borja † | Bishop of Calahorra y La Calzada, Spain |
| 12 May | 51.4 | Appointed | Francisco Antonio de la Portilla, O.F.M. † | Bishop of Mallorca, Spain |
| Appointed | Nicolás Urbano de la Mota y Haro † | Bishop of La Paz, Bolivia |
| 14 May | 52.8 | Ordained Bishop | Tobias Johannes Becker † | Bishop of Hradec Králové, Czech Republic |
| 20 May | 49.8 | Died | Rudolf Joseph Reichsgraf von Thun † | Bishop of Seckau, Austria |
| 21 May | 58.4 | Appointed | José Sicardo, O.S.A. † | Archbishop of Sassari, Italy |
| 28 May | 63.6 | Ordained Bishop | Manuel Arias y Porres, O.S.H. † | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 8 Jun | 31.3 | Appointed | Kaspas Ignaz Freiherr von Künigl zu Ehrenburg † | Bishop of Brixen {Bressanone}, Italy |
| 10 Jun | 44.0 | Ordained Priest | Pier Marcellino Corradini † | Priest | Cardinal, Bishop of Frascati, Italy |
| 20 Jun | 87.5 | Died | John Leyburn † | Vicar Apostolic of London District, England, Great Britain | Vicar Apostolic of England, Great Britain |
| 21 Jun | 37.3 | Confirmed | Franz Joseph Supersaxo † | Bishop of Sion {Sitten}, Switzerland |
| 37.3 | Ordained Bishop | Franz Joseph Supersaxo † | Bishop of Sion {Sitten}, Switzerland |
| 3 Jul | 45.5 | Installed | Jean-François Chamillart † | Bishop of Senlis, France |
| 16 Jul | 38.5 | Ordained Bishop | Ildefonso de Mena y Borja † | Bishop of Calahorra y La Calzada, Spain |
| 23 Jul | 50.6 | Ordained Bishop | Gabriel de Cosnac † | Bishop of Die, France | Bishop Emeritus |
| 31 Jul | 57.6 | Appointed | Juan Feyjóo González de Villalobos, O. Carm. † | Bishop of Guadix, Spain |
| 6 Aug | 58.6 | Ordained Bishop | José Sicardo, O.S.A. † | Archbishop of Sassari, Italy |
| 12 Aug | 47.2 | Appointed | George Witham † | Vicar Apostolic of Midland District, England, Great Britain | Vicar Apostolic of Northern District, England, Great Britain |
| 47.2 | Appointed | George Witham † | Titular Bishop of Marcopolis | Vicar Apostolic of Northern District, England, Great Britain |
| 13 Aug | 82.8 | Died | Jobst Edmund Freiherr von Brabeck † | Bishop of Hildesheim, Germany |
| 23 Aug | 63.6 | Died | Ferdinand Schröffel † | Auxiliary Bishop of Olomouc, Czech Republic |
| 2 Sep | | Born | Johann Georg Freiherr von Stinglheim † | Kürn | Auxiliary Bishop of Regensburg, Germany |
| 17 Sep | 45.7 | Ordained Bishop | Vincent-François des Maretz † | Bishop of Saint-Malo, France |
| 24 Sep | 30.5 | Ordained Bishop | Luis Simões Brandão † | Bishop of Angola e Congo, Angola | Bishop Emeritus |
| 2 Oct | | Born | Martín Barcia Carrascal † | Zamora | Bishop of Córdoba, Spain |
| 13 Oct | 62.3 | Appointed | Otto Wilhelm Reichsgraf von Bronckhorst zu Gronsfeld, S.J. † | Vicar Apostolic of Nordic Missions, Germany | Auxiliary Bishop of Osnabrück, Germany |
| 15 Oct | 22.9 | Ordained Priest | Thomas Philip Wallrad d'Alsace-Boussut de Chimay † | Priest | Cardinal, Archbishop of Mechelen, Belgium |
| 57.8 | Ordained Bishop | Juan Feyjóo González de Villalobos, O. Carm. † | Bishop of Guadix, Spain |
| 17 Oct | | Born | Alsonso Francisco Arango † | Quinzanas | Bishop of Orense, Spain |
| 27 Oct | 75.8 | Died | Niccolò Radulovich † | Cardinal, Archbishop of Chieti, Italy |
| 2 Nov | 80.8 | Died | Andrés de las Navas y Quevedo, O. de M. † | Bishop of Guatemala (Santiago de Guatemala), Guatemala |
| 3 Nov | 86.5 | Died | Wojciech Izdebski † | Auxiliary Bishop of Vilnius, Lithuania |
| 4 Nov | 46.8 | Died | Charles Magdelaine Frézeau de Frèzelière † | Bishop of La Rochelle, France |
| 9 Nov | | Born | José Domingo Rivero † | San Felices de Buelna | Bishop of Ceuta, Spain |
| 20 Nov | 32.9 | Appointed | Filippo Carlo Spada † | Bishop of Pesaro, Italy | Titular Patriarch of Alexandria of Egypt {Alessandria di Egitto} (-Eliopoli di Egitto-Port-Said) |
| 30 Nov | 23.9 | Ordained Priest | Joseph Oswald Reichsgraf von Attems † | Priest of Salzburg, Austria | Bishop of Lavant, Slovenia |
| Dec | 72.1 | Died | Alfonso Pacella (Pacelli) † | Bishop of Muro Lucano, Italy |
| 1 Dec | | Born | Moritz Adolf Karl Herzog von Sachsen-Zeitz (Saský) † | Neustadt/Orla | Bishop of Litomĕrice, Czech Republic |
| 22 Dec | 76.0 | Died | Luis de Lemos y Usategui, O.S.A. † | Bishop Emeritus of Concepción, Chile |
| 23 Dec | 39.8 | Appointed | Giulio Piazza † | Apostolic Nuncio to Germany | Cardinal, Archbishop (Personal Title) of Faenza, Italy |
| 25 Dec | 37.4 | Ordained Priest | Wilhelm Hermann Ignaz Ferdinand Reichsfreiherr von Wolf-Metternich zu Gracht † | Priest of Münster, Germany | Auxiliary Bishop |