| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Filippo Anastasio † | Napoli | Archbishop Emeritus of Sorrento, Italy |
| 33.3 | Ordained Priest | Juan de Andaya y Sotomayor † | Priest | Bishop of Ciudad Rodrigo, Spain |
| Resigned | Francisco Araújo † | Bishop of Segovia, Spain | Bishop Emeritus |
| Appointed | Juan Francisco Arnaldo Isasi † | Bishop of Puerto Rico (Porto Rico) |
| Died | Youhanna Bawwab el-Safrawi † | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| Appointed | Gaspare Borghi (Burgi) † | Bishop of Penne e Atri, Italy |
| 61.5 | Resigned | Persio Caracci † | Bishop of Larino, Italy | Bishop Emeritus |
| 16.6 | Professed | Alessandro Ciceri, S.J. † | Member of Society of Jesus | Bishop of Nanking [Nanjing], China |
| 38.0 | Died | Marco Crisio † | Archbishop of Bar (Antivari), Montenegro |
| Born | Filippo della Torre † | Cividale | Bishop of Adria, Italy |
| Born | François de Nettancourt d’Haussonville de Vaubecourt † | Cathalaunen | Bishop Emeritus of Montauban, France |
| Appointed | Diego Escolano y Ledesma † | Bishop of Mallorca, Spain | Archbishop of Granada, Spain |
| Born | Andreas Galata † | Curbini | Bishop of Shkodrë (Scutari), Albania |
| Born | Antoine Girard de La Bornat (La Bournat) † | Auvergne | Bishop of Poitiers, France |
| Born | François Gaspard de Grammont † | | Auxiliary Bishop of Besançon, France |
| Died | Dominici de Grammatica † | Bishop of Andros, Greece |
| Born | Kazimierz Benedykt Lezeński, O. Cist. † | Wiślica | Auxiliary Bishop of Warmia (Ermland), Poland |
| Died | Gerolamo Lomellini † | Bishop of Todi, Italy |
| Resigned | Giovanni Agostino Marliani † | Bishop of Accia and Mariana, France | Bishop of Reggio Emilia, Italy |
| Died | Francesco Massucci † | Bishop of Penne e Atri, Italy |
| 36.0 | Resigned | Camillo Massimo (Massimi) † | Apostolic Nuncio to Spain | Cardinal, Cardinal-Priest of Sant’Anastasia |
| Born | Juan Miguélez Mendaña † | Cubillos del Sil | Bishop of Tortosa, Spain |
| Died | Paul Milliet de Challes † | Bishop of Saint-Jean-de-Maurienne, France |
| Appointed | Juan Pérez de Vega (López de Vega) † | Bishop of León, Spain |
| 26.0 | Ordained Priest | François-Placide de Baudry de Piancourt, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Mende, France |
| 47.0 | Ordained Priest | Celio Piccolomini † | Priest | Cardinal, Archbishop of Siena, Italy |
| Born | Antonio Prado Sandoval y Rojas † | Olite, Spain | Titular Bishop of Thermae Basilicae |
| Appointed | Fernando de Quesada † | Bishop of Cádiz, Spain |
| 48.0 | Resigned | Francesco Angelo Rapaccioli † | Bishop of Terni, Italy | Cardinal, Bishop Emeritus |
| Born | Alphonsus Rozado † | Granaten | Bishop of Badajoz, Spain |
| Born | Juan Ruiz Simón † | Tarazona | Bishop of Islas Canarias {Canary Islands}, Spain |
| 52.9 | Resigned | Federico Sforza † | Bishop of Rimini, Italy | Cardinal, Bishop of Tivoli, Italy |
| Died | Felice Tamburelli † | Bishop of Sora, Italy |
| Appointed | Diego de Tejada y la Guardia † | Bishop of Ciudad Rodrigo, Spain | Archbishop of Burgos, Spain |
| Born | Guillaume Tual † | Laurenan | Auxiliary Bishop of Strasbourg, France |
| 43.0 | Appointed | Tomasz Ujejski, S.J. † | Bishop of Foreign Diocese | Auxiliary Bishop of Warmia (Ermland), Poland |
| Appointed | Francesc Crespí de Valldaura i Brizuela † | Bishop of Vic, Spain |
| Jan | 54.0 | Resigned | Giuseppe Cianti, O.P. † | Bishop of Marsico Nuovo, Italy | Bishop Emeritus |
| 10 Jan | 34.1 | Appointed | Carlo Fabrizio Giustiniani † | Bishop of Accia and Mariana, France |
| Appointed | Vincenzo Giovannelli, O.F.M. † | Bishop of Pult, Albania |
| Appointed | Jan Leszczyński † | Bishop of Chelmno (Culma, Kulm), Poland |
| 16 Jan | | Born | Daniel Joseph Mayer † | Stráz | Archbishop of Praha {Prague}, Czech Republic |
| 17 Jan | | Died | Jerzy Tyszkiewicz † | Bishop of Vilnius, Lithuania |
| 21 Jan | 42.0 | Appointed | Leopold Wilhelm von Österreich † | Bishop of Wrocław (Breslau), Poland | Bishop-Elect of Passau, Germany |
| 25 Jan | 42.1 | Ordained Bishop | Pál Hoffmann † | Bishop of Pécs, Hungary |
| 30 Jan | 73.1 | Died | Pierdonato Cesi (Jr.) † | Cardinal, Cardinal-Priest of San Marcello |
| 31 Jan | 45.1 | Appointed | Ludwig Wilhelm Benz † | Auxiliary Bishop of Eichstätt, Germany |
| 45.1 | Appointed | Ludwig Wilhelm Benz † | Titular Bishop of Dardanus | Auxiliary Bishop of Eichstätt, Germany |
| Confirmed | François de Bosquet † | Bishop of Montpellier, France |
| 67.1 | Appointed | Miguel Escartín Arbeza, O. Cist. † | Bishop of Lérida, Spain | Bishop of Tarazona, Spain |
| Appointed | Albertus Grabowski † | Titular Bishop of Aenus |
| 72.5 | Appointed | Diego Martínez Zarzosa † | Bishop of Málaga, Spain |
| Feb | | Died | Miguel Pérez de Nueros † | Bishop of Mallorca, Spain |
| 2 Feb | | Born | Marco Antonio Attaffi † | Stignano | Bishop of Squillace, Italy |
| 14 Feb | 69.1 | Died | Bernardo Florio, O. Cruc. † | Archbishop of Zadar (Zara), Croatia |
| 51.1 | Appointed | Diego Francés de Urrutigoyti y Lerma † | Bishop of Barbastro, Spain | Bishop of Tarazona, Spain |
| 41.1 | Appointed | Pietro Martire Rusca, O.F.M. Conv. † | Bishop of Caorle, Italy |
| 17 Feb | 57.1 | Died | Bernardo Atayde de Lima Perera † | Bishop of Avila, Spain |
| 21 Feb | 63.1 | Died | Giovanni Paolo Buccerelli † | Bishop of Narni, Italy |
| Mar | | Died | Lorenzo Reynoso † | Archbishop of Brindisi, Italy |
| 3 Mar | 39.9 | Appointed | Bandino Accarigi † | Bishop of Massa Marittima, Italy |
| 6 Mar | 41.9 | Appointed | Antonio Bichi † | Cardinal, Bishop of Osimo, Italy |
| 49.2 | Appointed | Andrea Bogdani (Bogadano) † | Archbishop of Skopje, Macedonia | Archbishop Emeritus |
| 35.2 | Appointed | Petrus Bogdano † | Bishop of Shkodrë (Scutari), Albania | Archbishop of Skopje, Macedonia |
| Appointed | Girolamo Cori (de Coris) † | Bishop of Nardò, Italy | Bishop of Sovana (Soana), Italy |
| 44.2 | Appointed | Vincenzo Costaguti † | Cardinal-Deacon of Sant’Eustachio | Cardinal, Cardinal-Priest of San Callisto |
| 44.6 | Appointed | Giancarlo de’ Medici † | Cardinal, Cardinal-Deacon of San Giorgio in Velabro |
| 52.2 | Appointed | Giulio Gabrielli † | Cardinal-Priest of Santa Prisca | Cardinal, Bishop Emeritus of Ascoli Piceno, Italy |
| Appointed | Marcantonio Oddi † | Titular Bishop of Hierapolis in Isauria | Bishop of Perugia, Italy |
| 44.8 | Resigned | Bl. Benedetto Odescalchi † | Bishop of Novara, Italy | Pope (Roma {Rome}, Italy) |
| Appointed | Giulio Maria Odescalchi, O.S.B. † | Bishop of Novara, Italy |
| 40.8 | Appointed | Virginio Orsini, O.S.Io.Hieros. † | Cardinal-Deacon of Santa Maria in Via Lata | Cardinal, Cardinal-Bishop of Frascati |
| 39.2 | Appointed | Paolo Emilio Rondinini † | Cardinal-Deacon of Santa Maria in Cosmedin | Cardinal, Bishop of Assisi, Italy |
| 41.2 | Appointed | Georgius Vladagni † | Bishop of Lezhë {Lesh, Alessio}, Albania |
| 14 Mar | | Born | Francisco de Paula Garcés Marcilla, O.M. † | Formiche el Bajo | Bishop of Huesca, Spain |
| Born | Rogerius Giacobetti † | Assisi | Bishop of Assisi, Italy |
| 20 Mar | 59.3 | Appointed | Giuseppe della Corgna (Cornea), O.P. † | Bishop of Orvieto, Italy | Bishop Emeritus |
| Appointed | Franjo Soimirovic (Svimirovich), O.F.M. † | Archbishop of Achrida (Ochrida), Bulgaria |
| 25 Mar | 25.6 | Ordained Priest | Estephan Douaihi † | Priest | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| 60.8 | Ordained Bishop | Ägidius Gelenius † | Titular Bishop of Aureliopolis in Asia | Auxiliary Bishop of Osnabrück, Germany |
| 26 Mar | 41.2 | Ordained Priest | Carolus Montecatini † | Priest | Titular Archbishop of Chalcedon |
| Apr | 54.3 | Resigned | Giacomo Corradi † | Bishop of Jesi, Italy | Cardinal, Bishop Emeritus |
| Born | Giovanni Manola † | Spalaten | Bishop of Nona (Nin), Croatia |
| 1 Apr | 23.0 | Ordained Priest | Fabrizio Susanna † | Priest | Bishop of Montepeloso, Italy |
| 3 Apr | 68.3 | Appointed | Francisco Guerra, O.F.M. † | Bishop of Plasencia, Spain |
| Born | Francesco Giacinto Valperga di Masino † | Taurinen | Bishop of Saint-Jean-de-Maurienne, France |
| Appointed | Tomasz Wieyski (Ujejski) † | Bishop of Kyiv and Chernihiv (Kijów and Czernihow), Ukraine | Bishop Emeritus |
| 4 Apr | | Died | Angelo Maria Ciria, O.S.M. † | Archbishop of Chieti, Italy |
| 15 Apr | 27.7 | Ordained Priest | Gerardus Gherardi † | Priest | Bishop of Pistoia e Prato, Italy |
| 24 Apr | 71.3 | Died | Francesco Cherubini † | Cardinal, Bishop of Senigallia, Italy |
| 42.8 | Appointed | Alderano Cibo † | Bishop of Jesi, Italy | Cardinal, Bishop Emeritus |
| 27 Apr | | Died | Marcus Scura, O.F.M. † | Archbishop of Durrës (Durazzo), Albania |
| 28 Apr | 51.3 | Died | Syrus Straserra, C.R. † | Bishop of Ajaccio, France |
| 30 Apr | 45.3 | Ordained Bishop | Ludwig Wilhelm Benz † | Titular Bishop of Dardanus | Auxiliary Bishop of Eichstätt, Germany |
| May | | Born | Bisanzio Fili † | Altamura | Bishop of Ostuni, Italy |
| 1 May | 67.3 | Died | Domenico Cecchini † | Cardinal, Cardinal-Deacon of San Sisto |
| 10 May | | Born | Gerolamo Francesco Malpasciuto † | Montilii | Bishop of Vercelli, Italy |
| 14 May | 24.6 | Ordained Bishop | Toussaint de Forbin-Janson † | Titular Bishop of Philadelphia in Arabia | Cardinal, Bishop of Beauvais, France |
| 16 May | 23.2 | Ordained Priest | Pierre de Montenbach † | Priest of Lausanne, Switzerland | Bishop |
| 18 May | | Died | Giovanni Gerini † | Bishop of Pistoia e Prato, Italy |
| 19 May | 43.4 | Selected | Nicolas Sévin † | Coadjutor Bishop of Cahors, France | Bishop |
| 21 May | 31.4 | Ordained Priest | Alexander Dunbar Winchester (Winster) † | Priest | Prefect Emeritus of Scotland, Great Britain |
| 29 May | 44.7 | Appointed | Michele Beggiami (Beggiamo) † | Bishop of Mondovi, Italy | Archbishop of Torino {Turin}, Italy |
| 59.4 | Appointed | Sebastiano Gentili † | Bishop of Terni, Italy | Bishop Emeritus |
| 46.4 | Appointed | Juan Lozano, O.S.A. † | Bishop of Mazara del Vallo, Italy | Bishop of Plasencia, Spain |
| Jun | | Born | Giacomo Falconetti, O.P. † | Senen | Bishop of Grosseto, Italy |
| 17 Jun | | Appointed | Giovanni Battista Barducci † | Bishop of San Miniato, Italy |
| 21 Jun | | Installed | Diego Osorio de Escobar y Mendoza (Llamas) † | Bishop of Tlaxcala, México | Bishop Emeritus |
| 23 Jun | 39.2 | Appointed | Giovanni Delfino † | Coadjutor Patriarch of Aquileia, Italy | Cardinal, Patriarch |
| 39.2 | Appointed | Giovanni Delfino † | Titular Archbishop of Thagaste | Cardinal, Patriarch of Aquileia, Italy |
| 24 Jun | 38.7 | Ordained Bishop | Lothar Friedrich von Metternich-Burscheid † | Bishop of Speyer, Germany | Archbishop of Mainz, Germany |
| 25 Jun | 51.5 | Ordained Bishop | Diego Francés de Urrutigoyti y Lerma † | Bishop of Barbastro, Spain | Bishop of Tarazona, Spain |
| 26 Jun | 58.5 | Appointed | Tommaso Carpegna, C.R. † | Bishop of Rimini, Italy |
| Appointed | Raimondo Castelli † | Bishop of Narni, Italy |
| 38.5 | Appointed | Louis de Fortia-Montréal † | Coadjutor Bishop of Carpentras, France | Bishop |
| 56.5 | Confirmed | Gaspare Litago † | Archbishop of Sassari, Italy |
| Confirmed | Louis de Nogaret de La Valette † | Bishop of Carcassonne, France |
| 62.8 | Appointed | Angelo Pineri † | Bishop of Marsico Nuovo, Italy |
| 53.4 | Appointed | Federico Sforza † | Cardinal-Priest of Santi Silvestro e Martino ai Monti | Cardinal, Bishop of Tivoli, Italy |
| Appointed | Giacomo Vianoli † | Titular Bishop of Famagusta | Bishop of Torcello (Turris), Italy |
| 29 Jun | 59.3 | Died | Juan Alonso y Ocón † | Archbishop of La Plata o Charcas, Bolivia |