| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Antonius de Acevedo † | | Titular Bishop of Fussala |
| Appointed | Francisco Araújo † | Bishop of Segovia, Spain | Bishop Emeritus |
| Died | Marino Badoer, O.S.B. † | Bishop of Pula (Pola), Croatia |
| Born | Wojciech Ignacy Bardziński † | | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| Born | Matthaeus Berniacovich, O.F.M. † | Bosnen | Titular Bishop of Belgrado e Semendria o Smederevo |
| Born | Juan Bonilla Vargas, O.SS.T. † | Madrid | Bishop of Córdoba, Spain |
| Born | Maximilien Bormann † | | Auxiliary Bishop of Trier, Germany |
| Appointed | François de Bosquet † | Bishop of Lodève, France |
| 55.0 | Died | Ferdinando Bruni, O.F.M. † | Bishop of Lacedonia, Italy |
| Born | Jorge Cárdenas Valenzuela † | Córdoba | Bishop of Osma, Spain |
| Appointed | Luis Antonio de Castro y Castillo † | Bishop of La Paz, Bolivia |
| Born | Gasparo Cavalieri † | Rome | Cardinal, Archbishop of Capua, Italy |
| Born | Baldassare Cenci (Sr.) † | Rome | Cardinal, Archbishop of Fermo, Italy |
| Born | Gregorius Civalelli † | Iadren | Bishop of Scardona (Skradin), Italy |
| Born | Louis-Marcel de Coëtlogon-Méjusseaume † | Rennes, France | Bishop of Tournai {Doornik}, Belgium |
| Born | André Colbert † | Reims | Bishop of Auxerre, France |
| 61.0 | Died | Giovanni Battista Falesi, O.P. † | Bishop of Mottola (Motula), Italy |
| Died | Alberto Giunti † | Bishop of Castro, Italy |
| Born | Juan Iñiguez Arnedo † | Bergara | Bishop of Pamplona, Spain |
| Ordained Priest | Adam Kos † | Priest of Chelmno (Culma, Kulm), Poland | Bishop |
| 25.2 | Ordained Priest | Maximilian Gandolf von Kuenburg † | Priest of Salzburg, Austria | Cardinal, Archbishop |
| Born | Charles-Marin Labbé, M.E.P. † | Luc-sur-Mer, France | Coadjutor Vicar Apostolic of Cochin {Cocincina}, Viêt Nam |
| 40.0 | Appointed | Pedro de Lencastre, O.F.M. Cap. † | Archbishop of Évora, Portugal | Archbishop Emeritus of Braga, Portugal |
| 39.3 | Ordained Priest | Alfonso Michele Litta † | Priest | Cardinal, Archbishop of Milano {Milan}, Italy |
| 61.0 | Died | Girolamo Martini † | Bishop of Ugento, Italy |
| Born | João de Mascarenhas † | Lisboa | Bishop of Guarda, Portugal |
| 62.0 | Died | Alessandro Masi † | Bishop of Valva, Italy |
| Appointed | Francesco Massucci † | Bishop of Penne-Atri, Italy |
| Born | Augustin de Maupeou † | Paris | Archbishop of Auch, France |
| Died | Fernando Montero Espinosa † | Archbishop of Manila, Philippines |
| Died | Pedro Neila † | Bishop of Segovia, Spain |
| 57.9 | Ordained Priest | Berthold Nihus † | Priest of Köln {Cologne}, Germany | Auxiliary Bishop of Mainz, Germany |
| Born | Baldassarre Nosadini † | Venetiis | Bishop of Krk (Veglia), Croatia |
| 66.0 | Died | Charles de Nouailles † | Bishop of Rodez, France |
| 75.0 | Died | Paolo Palumbo, C.R. † | Bishop of Cassano all’Jonio, Italy |
| Appointed | Petar Petretić † | Bishop of Zagreb (Agram), Croatia | Archbishop of Kalocsa, Hungary |
| Born | Angelo Maria Porfiri (Porfirius) † | Camerino | Bishop of Alife, Italy |
| Appointed | Bernardino Rodríguez de Arriaga, O.S.A. † | Bishop of Guadix, Spain |
| Born | Michael Rossiter † | Bargy Castle | Bishop of Ferns, Ireland |
| Born | Tommaso Saladino † | Asculan | Bishop of Parma, Italy |
| 38.0 | Ordained Priest | Johannes Maximus Stainer von Pleinfelden † | Priest | Auxiliary Bishop of Passau, Germany |
| 43.0 | Appointed | Mátyás Tarnóczy † | Bishop of Csanád, Hungary | Bishop of Vác, Hungary |
| Appointed | Agustín de Ugarte y Sarabia † | Bishop of Quito, Ecuador |
| Resigned | Maestro Valderas, O. de M. † | Archbishop of Santo Domingo, Dominican Republic | Archbishop Emeritus |
| Born | Juan de Villacé y Vozmediano † | Mayorga | Bishop of Plasencia, Spain |
| Born | Michele Carlo Visdomini Cortigiani † | Florence | Bishop of Pistoia-Prato, Italy |
| Resigned | Alessandro Vittrici † | Bishop of Alatri, Italy | Bishop Emeritus |
| 30.0 | Ordained Priest | Franz Weinhart † | Priest of Brixen {Bressanone}, Italy | Auxiliary Bishop of Regensburg, Germany |
| Born | Francisco Zapata Vera y Morales † | Toledo | Bishop of Zamora, Spain |
| Jan | | Died | Silvestro Andreozzi † | Bishop of Penne-Atri, Italy |
| 41.0 | Died | Aniello Campagna † | Bishop of Nusco, Italy |
| 2 Jan | 82.8 | Died | Isidoro Aliaga, O.P. † | Archbishop of Valencia, Spain |
| 3 Jan | 76.2 | Died | Giacomo Goria † | Bishop of Vercelli, Italy |
| 10 Jan | | Born | Michael Angelus Farfulfi, O.F.M. † | Creten | Bishop of Trogir (Traù), Croatia |
| 13 Jan | 31.8 | Confirmed | Pierre de Gassion † | Bishop of Oloron (Oloron-Sainte-Marie), France |
| 54.0 | Confirmed | Pierre de Marca † | Bishop of (Saint-Lizier de) Couserans, France | Archbishop of Paris, France |
| 47.0 | Appointed | Wojciech Pilchowicz † | Auxiliary Bishop of Warmia (Ermland), Poland |
| 47.0 | Appointed | Wojciech Pilchowicz † | Titular Bishop of Hippo Diarrhytus | Auxiliary Bishop of Warmia (Ermland), Poland |
| 53.0 | Appointed | Francesco Antonio Sacchetti † | Bishop of Troia, Italy |
| 63.0 | Appointed | Francisco Torres Grijalba, O.S.A. † | Bishop of Mondoñedo, Spain |
| 24 Jan | | Born | Pedro Aguado, C.R.M. † | Madrid | Bishop of Pamplona, Spain |
| 28 Jan | 38.1 | Died | Augustinus Donghi, C.R. † | Bishop of Aleria, France |
| Died | Giovanni Torresiglia (Torrecilla Manso) † | Archbishop of Monreale, Italy |
| Born | Andrzej Chryzostom Załuski † | Rawa | Bishop of Warmia (Ermland), Poland |
| 3 Feb | | Born | Bonaventura Poerio, O.F.M. † | Taverna | Archbishop of Salerno, Italy |
| 8 Feb | 64.1 | Selected | Tommaso d’Aquino, C.R. † | Bishop of Mottola (Motula), Italy |
| 10 Feb | | Appointed | Francesco Biglia † | Bishop of Pavia, Italy |
| 58.9 | Appointed | Francisco Diego Alarcón y Covarrubias † | Bishop of Pamplona, Spain | Bishop of Córdoba, Spain |
| 40.1 | Appointed | Jean d’Estrade † | Bishop of Condom, France | Bishop Emeritus |
| 11 Feb | 68.1 | Died | Malatesta Baglioni † | Bishop of Assisi, Italy |
| 13 Feb | | Born | Pedro de Palacios y Tenorio, O.P. † | Valdemoro | Bishop Emeritus of Guadix, Spain |
| 14 Feb | | Born | Francesco Ramírez, O.P. † | Estremera | Bishop of Agrigento (Girgenti), Italy |
| 15 Feb | 80.1 | Died | Antoine de Coues † | Bishop Emeritus of Condom, France |
| 20 Feb | | Died | Antonio Henriquez Porres, O.F.M. † | Bishop of Málaga, Spain |
| 26 Feb | | Born | Francisco Ignacio Añoa Busto † | Viana | Archbishop of Zaragoza, Spain |
| Mar | | Born | François Balbe de Berton de Crillon † | Provence | Archbishop of Vienne, France |
| Born | Giuseppe Maria Bondola, O.F.M. Conv. † | Napoli | Bishop of Satriano e Campagna, Italy |
| 45.2 | Ordained Bishop | Patrick Plunkett, O. Cist. † | Bishop of Ardagh (and Clonmacnois), Ireland | Bishop of Meath, Ireland |
| Died | Michael Rezzi (Resti) † | Bishop of Ascoli Satriano, Italy |
| 2 Mar | 46.2 | Appointed | Giacinto Cevoli, O.P. † | Bishop of San Marco (Argentano), Italy |
| 37.2 | Appointed | Carlo de’ Vecchi † | Bishop of Chiusi, Italy | Bishop Emeritus |
| 8 Mar | 31.9 | Ordained Bishop | Pierre de Gassion † | Bishop of Oloron (Oloron-Sainte-Marie), France |
| 13 Mar | 48.2 | Resigned | Sallustio Pecólo (Pecoli) † | Bishop of Venosa, Italy | Bishop Emeritus |
| 15 Mar | 37.2 | Ordained Bishop | Carlo de’ Vecchi † | Bishop of Chiusi, Italy | Bishop Emeritus |
| 19 Mar | 46.2 | Ordained Bishop | Giacinto Cevoli, O.P. † | Bishop of San Marco (Argentano), Italy |
| 25 Mar | | Born | Basilio Brollo, O.F.M. † | Gemona | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 28 Mar | 32.2 | Ordained Priest | Paolo Filocamo † | Priest | Bishop of Squillace, Italy |
| 29 Mar | 63.2 | Ordained Bishop | Francisco Torres Grijalba, O.S.A. † | Bishop of Mondoñedo, Spain |
| 30 Mar | 67.0 | Confirmed | Anton Crosini von Bonporto † | Bishop of Brixen {Bressanone}, Italy |
| 47.0 | Appointed | Sigismund Miutini von Spilenberg † | Auxiliary Bishop of Olomouc, Czech Republic |
| 47.0 | Appointed | Sigismund Miutini von Spilenberg † | Titular Bishop of Tiberias | Auxiliary Bishop of Olomouc, Czech Republic |
| 12 Apr | 47.3 | Ordained Bishop | Bl. Terence Albert O’Brien, O.P. † | Bishop of Emly, Ireland |
| Died | Gerolamo Pellegrini † | Bishop of Melfi-Rapolla, Italy |
| 15 Apr | 28.8 | Ordained Priest | Johann Franz von Schönau † | Priest of Eichstätt, Germany | Bishop of Basel, Switzerland |
| 19 Apr | 32.0 | Ordained Priest | Wojciech Izdebski † | Priest | Auxiliary Bishop of Vilnius, Lithuania |
| 21 Apr | 53.2 | Selected | Pedro Carrillo y Acuña † | Bishop of Salamanca, Spain | Archbishop of Santiago de Compostela, Spain |
| 22 Apr | 42.3 | Selected | Hardouin de Péréfixe de Beaumont † | Bishop of Rodez, France | Archbishop of Paris, France |
| 25 Apr | | Died | Francisco Pérez Roy † | Bishop of Guadix, Spain |
| 26 Apr | | Ordained Bishop | Luis Antonio de Castro y Castillo † | Bishop of La Paz, Bolivia |
| 30 Apr | | Died | Emmeric-Marc de La Ferté † | Bishop of Le Mans, France |
| May | | Born | Paulus Bapt. Avanisensis, O.P. † | Abaraner | Archbishop of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| Born | António Vieira Leitão † | Lisboa | Bishop of Angra, Portugal |
| 2 May | | Appointed | Nicolas Sévin † | Bishop of Sarlat, France | Bishop of Cahors, France |
| 3 May | | Died | Juan Domingo Briz Trujillo † | Bishop of Jaca, Spain |
| 4 May | 30.6 | Appointed | Michelangelo Brancavalerio † | Bishop of Alatri, Italy |
| 43.9 | Confirmed | Léonor de Goyon de Matignon (I) † | Bishop of Lisieux, France | Bishop Emeritus |
| 50.9 | Appointed | Thomas Henrici † | Auxiliary Bishop of Basel, Switzerland |
| 50.9 | Appointed | Thomas Henrici † | Titular Bishop of Chrysopolis in Arabia | Auxiliary Bishop of Basel, Switzerland |
| 59.3 | Appointed | Jacques Raoul de La Guibourgère † | Bishop of La Rochelle, France |
| 43.6 | Appointed | Jesse Perkhofer † | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 18 May | | Appointed | Giovanni Paolo Caccia † | Bishop of Marsi, Italy |
| 52.7 | Appointed | Cristoforo Pietro Antonio Giarda, B. † | Bishop of Castro, Italy |
| 70.4 | Confirmed | Juan Gutiérrez † | Bishop of Vigevano, Italy |
| 46.4 | Appointed | Antonio Pavonelli, O.F.M. Conv. † | Bishop of Venosa, Italy |
| Appointed | Giovanni Tommaso Pinelli, C.R. † | Bishop of Molfetta, Italy | Bishop of Albenga, Italy |
| 32.7 | Appointed | Giambattista Spínola (Sr.) † | Archbishop of Acerenza e Matera, Italy | Cardinal, Archbishop Emeritus of Genova, Italy |
| 25 May | | Died | Giuseppe Maria Piccini † | Bishop of Caorle, Italy |
| Jun | | Born | Antonio Forteguerra, O.S.B. † | Siena | Bishop of Pienza, Italy |
| 1 Jun | | Ordained Bishop | Giovanni Paolo Caccia † | Bishop of Marsi, Italy |
| 52.7 | Ordained Bishop | Cristoforo Pietro Antonio Giarda, B. † | Bishop of Castro, Italy |
| 14 Jun | 69.5 | Died | Placido Padiglia, O.S.B. † | Bishop of Alessano, Italy |
| 43.7 | Ordained Bishop | Jesse Perkhofer † | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 21 Jun | | Born | Daniel de Francheville † | Vannes | Bishop of Périgueux (Vesuna), France |