| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 51.0 | Resigned | Bonaventura D’Avalos, O.S.A. † | Bishop of Nocera de’ Pagani, Italy | Bishop Emeritus |
| Born | Jean-Hervé Bazan de Flamanville † | Flamanville-Hague | Bishop of Perpignan-Elne, France |
| Died | Baldassarre Bonifazio † | Bishop of Capodistria (Capo d'Istria)(Koper), Slovenia |
| 27.7 | Selected | Pierre de Bonzi † | Bishop of Béziers, France | Cardinal, Archbishop of Narbonne, France |
| Born | Antonio Maria Brancaccio, C.R. † | Napoli | Archbishop of Acerenza e Matera, Italy |
| 61.0 | Died | Tommaso Carpegna, C.R. † | Bishop of Rimini, Italy |
| Born | Jean de Catelan † | Toulouse | Bishop of Valence, France |
| Died | Sallustio Cherubini † | Bishop of Città Ducale, Italy |
| 51.0 | Resigned | Jean d’Estrade † | Bishop of Condom, France | Bishop Emeritus |
| Died | Francesco Maria Falcucci † | Bishop of Calvi Risorta, Italy |
| Died | Girolamo Figini-Oddi † | Bishop of Teramo, Italy |
| Born | Simeón Guinda Apéztegui, O.S.A. † | Esparza | Bishop of Urgell, Spain |
| 58.0 | Died | Rodrigo Gutiérrez de Rozas † | Bishop of Islas Canarias {Canary Islands}, Spain |
| Died | Fernando Heras Manrique † | Bishop of Calahorra y La Calzada, Spain |
| Born | Juan José Llamas Rivas, O. Carm. † | Antequera, Spain | Bishop of Panamá |
| Died | Tomás Manso, O.F.M. † | Bishop of Nicaragua |
| Born | Rodrigo Marín Rubio † | Tíjola | Bishop of Jaén, Spain |
| 71.0 | Resigned | Pietro Marioni † | Bishop of Telese o Cerreto Sannita, Italy | Bishop Emeritus |
| Born | Joseph-Gaspard de Montmorin de Saint-Hérem de La Chassaigne † | Auvergne | Bishop of Aire, France |
| Appointed | François Amédée Milliet de Challes † | Archbishop of Tarentaise (Moûtiers-en-Tarentaise), France |
| Born | Ennemond Alleman de Montmartin † | Viennen | Bishop of Grenoble, France |
| Born | Joannes Nicastro † | | Titular Bishop of Claudiopolis in Honoriade |
| Born | Jacinto Olivera y Pardo † | Oaxaca | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 20.0 | Ordained Priest | Jan Kazimierz Opaliński, O. Cist. † | Priest of Poznań, Poland | Bishop of Chelmno (Culma, Kulm), Poland |
| 41.0 | Died | Paolo Maria Spínola, C.R.S. † | Bishop of Sagone (Sagona), France |
| Born | José Ulzurrun de Asanza y Civera † | Zaragoza | Bishop of León, Spain |
| 42.0 | Ordained Priest | Wilderich von Walderdorff † | Priest of Mainz, Germany | Bishop of Wien, Austria |
| 4 Jan | | Born | Giacinto Gaetano Chiurlia (Chyurlia), O.P. † | Roma | Bishop of Giovinazzo, Italy |
| 5 Jan | | Born | Domenico Antonio Menafra † | Burgentiae Marsicen | Bishop of Acerno, Italy |
| 13 Jan | 53.9 | Appointed | Filiberto Alberto Bailly, B. † | Bishop of Aosta, Italy |
| Appointed | Laurentina de Chery † | Coadjutor Bishop of Nevers, France |
| Appointed | Laurentina de Chery † | Titular Bishop of Tripolis in Phoenicia | Coadjutor Bishop of Nevers, France |
| 68.0 | Appointed | Agazio di Somma † | Bishop of Cariati e Cerenzia, Italy | Bishop of Catanzaro, Italy |
| 51.0 | Appointed | Honuphrius Geronda (Gerona) † | Archbishop of Sassari, Italy |
| 45.0 | Confirmed | Eustache Le Clerc de Lesseville † | Bishop of Coutances, France |
| 40.0 | Appointed | Dominique de Ligni † | Titular Bishop of Philadelphia in Arabia | Bishop of Meaux, France |
| 40.0 | Confirmed | Dominique de Ligni † | Coadjutor Bishop of Meaux, France | Bishop |
| 46.0 | Appointed | Marzio Marini † | Bishop of Sagone (Sagona), France |
| 66.0 | Appointed | Enrique Peralta y Cárdenas † | Bishop of Palencia, Spain | Archbishop of Burgos, Spain |
| 38.0 | Appointed | Bartolomeo Polla † | Archbishop of Naxos, Greece |
| 40.1 | Confirmed | Johann Konrad von Roggenbach † | Bishop of Basel, Switzerland |
| 14 Jan | | Died | Henri de Savoie-Nemours † | Archbishop Emeritus of Reims, France |
| 18 Jan | | Born | Giovanni Battista Missiroli † | Bertinoro | Bishop of Bertinoro, Italy |
| 21 Jan | 77.1 | Died | Camillo Melzi † | Cardinal, Archbishop of Capua, Italy |
| 27 Jan | 52.6 | Appointed | Gabriel de Esparza Pérez † | Bishop of Badajoz, Spain | Bishop of Calahorra y La Calzada, Spain |
| 35.1 | Appointed | Carlo Labia, C.R. † | Archbishop of Corfù, Greece | Bishop of Adria, Italy |
| 53.4 | Appointed | Wacław Leszczyński † | Archbishop of Gniezno, Poland |
| Appointed | Antonio de Matteis Corano † | Bishop of Sarno, Italy |
| 61.4 | Appointed | Giambattista Spada † | Cardinal-Priest of San Marcello | Cardinal, Cardinal-Priest of San Crisogono |
| 79.1 | Appointed | Alonso de San Vítores y Fransarcén, O.S.B. † | Bishop of Zamora, Spain |
| 72.1 | Appointed | Gaspar de Villarroel, O.S.A. † | Archbishop of La Plata o Charcas, Bolivia |
| Feb | 59.1 | Died | François Servien † | Bishop of Bayeux, France |
| 67.1 | Died | Papirio Silvestri † | Bishop of Macerata e Tolentino, Italy |
| 2 Feb | | Selected | Attilio Pietrasanta, O. Cist. † | Bishop of Vigevano, Italy |
| 6 Feb | 62.8 | Installed | Martín López de Ontiveros † | Archbishop of Valencia, Spain |
| 7 Feb | 28.2 | Appointed | Sigmund Franz von Österreich † | Bishop of Trento, Italy | Bishop Emeritus of Augsburg, Germany |
| 9 Feb | 35.1 | Ordained Bishop | Carlo Labia, C.R. † | Archbishop of Corfù, Greece | Bishop of Adria, Italy |
| 16 Feb | 32.1 | Ordained Priest | Niccolò Radulovich † | Priest | Cardinal, Archbishop of Chieti, Italy |
| 17 Feb | 54.0 | Appointed | Juan de Almoguera, O.SS.T. † | Bishop of Arequipa, Peru | Archbishop of Lima, Peru |
| 54.1 | Confirmed | Charles-François d’Anglure de Bourlémont † | Bishop of Castres, France | Archbishop of Toulouse, France |
| 20 Feb | | Born | Nicolò Gaetano Spínola † | Madrid, Spain | Cardinal, Cardinal-Priest of Santi Nereo ed Achilleo |
| 22 Feb | | Appointed | Daniel Delfino † | Coadjutor Patriarch of Aquileia, Italy |
| 26 Feb | 52.2 | Died | Fabrizio Savelli † | Cardinal, Archbishop Emeritus of Salerno, Italy |
| Mar | | Born | Raimondo Asperti, O.P. † | Bergomen | Bishop of Hvar (Lesina), Croatia |
| Born | Giosafatte (Giosafat) Battistelli † | Palazzo | Bishop of Foligno, Italy |
| Born | Carlo Pignatelli, C.R. † | Napoli | Bishop of Gaeta, Italy |
| 66.8 | Died | Deodato Scaglia, O.P. † | Bishop of Alessandria (della Paglia), Italy |
| 9 Mar | 54.0 | Ordained Bishop | Filiberto Alberto Bailly, B. † | Bishop of Aosta, Italy |
| 40.2 | Ordained Bishop | Dominique de Ligni † | Titular Bishop of Philadelphia in Arabia | Bishop of Meaux, France |
| 10 Mar | 51.2 | Appointed | Lodovico Morales, O.S.A. † | Bishop of Ariano, Italy | Bishop of Tropea, Italy |
| 32.2 | Appointed | Niccolò Radulovich † | Cardinal, Archbishop of Chieti, Italy |
| Appointed | Bernard de Sariac † | Bishop of Aire, France |
| 12 Mar | | Died | Antonio del Pezzo † | Archbishop of Sorrento, Italy |
| 17 Mar | 47.6 | Succeeded | François Foucquet † | Archbishop of Narbonne, France |
| 72.2 | Died | Claude de Rebé † | Archbishop of Narbonne, France |
| 23 Mar | 45.2 | Ordained Bishop | Eustache Le Clerc de Lesseville † | Bishop of Coutances, France |
| 40.3 | Ordained Bishop | Johann Konrad von Roggenbach † | Bishop of Basel, Switzerland |
| 24 Mar | | Died | Miguel Ferrer † | Bishop of Tui, Spain |
| 24.1 | Ordained Priest | Alberto Mugiasca, O.P. † | Priest of Order of Friars Preachers | Bishop of Alessandria (della Paglia), Italy |
| 27 Mar | | Born | Francisco Antonio de Borja-Centelles y Ponce de Léon † | Sassari | Cardinal, Archbishop of Burgos, Spain |
| 29 Mar | 27.5 | Ordained Priest | Antonio Perez de la Lastra † | Priest | Bishop of Gallipoli, Italy |
| 30 Mar | 23.1 | Ordained Priest | Gottfried Kapaun von Swoykow † | Priest of Praha {Prague}, Czech Republic | Bishop of Hradec Králové, Czech Republic |
| Apr | | Born | François-Maurice Gontieri (de Gonteriis) † | Turin | Archbishop of Avignon, France |
| 4 Apr | 52.3 | Died | Giovanni Girolamo Lomellini † | Cardinal, Cardinal-Priest of Sant’Onofrio |
| 34.9 | Appointed | Aleksander Kazimierz Sapieha † | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania | Bishop of Vilnius, Lithuania |
| 6 Apr | 77.3 | Died | Luigi Capponi † | Cardinal, Archbishop Emeritus of Ravenna, Italy |
| 11 Apr | 47.3 | Selected | Arnauld-François de Maytie † | Bishop of Oloron (Oloron-Sainte-Marie), France |
| 12 Apr | 31.6 | Ordained Priest | Giacomo Bruti † | Priest | Bishop of Novigrad (Cittanova), Croatia |
| 21 Apr | 63.8 | Appointed | Ulderico Carpegna † | Cardinal-Priest of San Pietro in Vincoli | Cardinal, Bishop Emeritus of Todi, Italy |
| 55.1 | Appointed | Girolamo Colonna † | Cardinal-Priest of San Lorenzo in Lucina | Cardinal, Archbishop Emeritus of Bologna, Italy |
| 61.3 | Appointed | José de la Peña † | Bishop of Orense, Spain | Bishop of Calahorra y La Calzada, Spain |
| 55.3 | Appointed | Sebastiano Dossena, B. † | Bishop of Alife, Italy |
| 36.3 | Appointed | Jean de Meaupéou † | Bishop of Chalons-sur-Saône, France |
| 47.9 | Appointed | Bl. Benedetto Odescalchi † | Cardinal-Priest of Sant’Onofrio | Pope (Roma {Rome}, Italy) |
| 65.2 | Appointed | Giovanni Battista Maria Pallotta † | Cardinal-Priest of Santa Maria in Trastevere | Cardinal, Cardinal-Bishop of Frascati |
| 61.3 | Appointed | Ottaviano Prati † | Bishop of Bertinoro, Italy |
| 56.3 | Appointed | Federico Sforza † | Cardinal-Priest of Sant’Anastasia | Cardinal, Bishop of Tivoli, Italy |
| May | | Born | Giuseppe Grisconi, Sch. P. † | Ravellen | Bishop of Vieste, Italy |
| 2 May | 26.2 | Ordained Bishop | Louis Foucquet † | Bishop of Agde, France |
| 4 May | 55.3 | Ordained Bishop | Sebastiano Dossena, B. † | Bishop of Alife, Italy |
| 10 May | 61.8 | Died | Ranuccio (Ranuzio) Scotti Douglas † | Bishop Emeritus of Borgo San Donnino, Italy |
| 11 May | 18.6 | Professed | Placido Scoppa (Stoppa), C.R. † | Member of Congregation of Clerics Regular | Bishop of Venosa, Italy |
| 16 May | 40.4 | Succeeded | Dominique de Ligni † | Bishop of Meaux, France |
| 18 May | 63.4 | Died | François de Robles † | Bishop of Ypres (Ieper), Belgium |
| 25 May | 52.4 | Ordained Bishop | François de Salignac de La Mothe-Fénelon † | Bishop of Sarlat, France |
| 26 May | | Appointed | Georges Rizqallah Beseb’el † | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| 38.0 | Confirmed | Guillaume Le Boux † | Bishop of Acqs (Dax), France | Bishop of Périgueux (Vesuna), France |
| 31 May | 52.4 | Confirmed | François de Salignac de La Mothe-Fénelon † | Bishop of Sarlat, France |
| Jun | | Died | Francesco Caetani † | Bishop of Sarsina, Italy |
| 77.4 | Died | Alfonso Mendes, S.J. † | Patriarch of Ethiopia |
| 5 Jun | 68.4 | Died | Diego López de la Vega † | Bishop of Coria, Spain |
| 7 Jun | 24.1 | Ordained Priest | Alessandro Avio † | Priest | Bishop of San Severino (Marche), Italy |
| 28.7 | Ordained Priest | João Duarte do Sacramento, C.O. † | Priest of Confederation of Oratorians of St. Philip Neri | Bishop-Elect of Olinda, Brazil |
| 30.4 | Ordained Priest | Antonio Savo de’ Panicoli † | Priest | Bishop of Termoli, Italy |
| 9 Jun | | Confirmed | Giovanni Montoja de Cardona † | Bishop of Gallipoli, Italy |
| Appointed | Salvatore Mulas Pirella † | Bishop of Alghero, Italy |
| 64.4 | Appointed | Bernardo de Ontiveros, O.S.B. † | Bishop of Calahorra y La Calzada, Spain |
| 75.4 | Appointed | Alonso Pérez de Humanares, O. Cist. † | Bishop of Almería, Spain | Bishop of Cádiz, Spain |
| 44.4 | Appointed | Antonio Ricciulli † | Bishop of Umbriatico (Umbriaticum), Italy |
| 55.4 | Appointed | Giacinto Solaro di Moretta † | Bishop of Nice, France | Bishop Emeritus of Mondovi, Italy |
| 55.4 | Appointed | Juan de Toledo, O.S.H. † | Bishop of Islas Canarias {Canary Islands}, Spain | Bishop of León, Spain |
| 40.4 | Confirmed | Michelangelo Vaginari, O.F.M. † | Bishop of Giovinazzo, Italy |
| Appointed | Giovanni Carlo Valentini † | Bishop of Città Ducale, Italy |
| 11 Jun | 50.4 | Appointed | Eugenius Albertus d’Allamont † | Bishop of Roermond, Netherlands | Bishop of Gent {Ghent, Gand}, Belgium |
| 13 Jun | 40.4 | Appointed | Marco Galli (Gallo, Gallio) † | Cardinal, Bishop of Rimini, Italy |
| 15 Jun | | Ordained Bishop | Giovanni Montoja de Cardona † | Bishop of Gallipoli, Italy |
| 44.5 | Ordained Bishop | Antonio Ricciulli † | Bishop of Umbriatico (Umbriaticum), Italy |
| 40.5 | Ordained Bishop | Michelangelo Vaginari, O.F.M. † | Bishop of Giovinazzo, Italy |
| 19 Jun | 37.0 | Selected | Antonio Sanz Lozano † | Bishop of Cartagena, Colombia | Archbishop of Santafé en Nueva Granada, Colombia |
| 21 Jun | 28.1 | Appointed | Flavio Chigi (Sr.) † | Librarian of the Vatican Library | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 23 Jun | 50.5 | Ordained Bishop | Eugenius Albertus d’Allamont † | Bishop of Roermond, Netherlands | Bishop of Gent {Ghent, Gand}, Belgium |
| Appointed | Marcantonio Oddi † | Bishop of Perugia, Italy |
| 24 Jun | 45.5 | Died | Pál Hoffmann † | Bishop of Pécs, Hungary |