| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Antonius of Alexio, O.F.M. † | Alexio | Bishop of Lezhë {Lesh, Alessio}, Albania |
| 35.7 | Ordained Bishop | Abraham Petros I Ardzivian † | Bishop | Patriarch of Cilicia (Armenian), Lebanon |
| Born | Joseph-Amédée de Broglie † | Arles | Bishop of Angoulême, France |
| Born | Baldassare Cenci (Jr.) † | Rome, Italy | Cardinal, Cardinal-Priest of Santa Maria in Ara Coeli |
| Born | Michael Fadel † | Beirut | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| 18.0 | Ordained Priest | Juan González Melgarejo † | Priest of Paraguay | Bishop of Arequipa, Peru |
| 18.4 | Professed | Meinwerk Kaup, O.S.B. † | Member of Order of Saint Benedict | Auxiliary Bishop of Paderborn, Germany |
| Appointed | Olivier-Gabriel de Lubières (Nubières) du Bouchet † | Bishop of (Saint-Bernard de) Comminges, France |
| 21.8 | Ordained Priest | José Mezquía Díaz de Arrízola, O. de M. † | Priest of Order of Our Lady of Mercy | Bishop of Solsona, Spain |
| 57.0 | Died | Miguel Pérez Lara † | Bishop of Coria, Spain |
| Born | Louis-Henri de Rochefort d’Ally † | | Bishop of Chalons-sur-Saône, France |
| Born | Diego Salguero de Cabrera † | Córdoba | Bishop of Arequipa, Peru |
| 72.9 | Appointed | Varlaam Sheptyskyi † | Bishop of Lviv (Ukrainian), Ukraine |
| Born | Pietro Martire de Stefani, O.P. † | Scio | Archbishop of Naxos, Greece |
| Born | Nicolaus (Florentius) Szostak (a Jesu), O.C.D. † | Vilnen | Titular Bishop of Areopolis |
| 53.0 | Died | Pedro Vázquez de Velasco † | Bishop of Santa Cruz de la Sierra, Bolivia |
| Born | Stanislaus Wykowski † | Luceorien | Auxiliary Bishop of Przemyśl, Poland |
| 2 Jan | | Born | Simon Ambros Stock † | Wien | Titular Bishop of the Titular See |
| 5 Jan | 64.3 | Ordained Bishop | Diego Montero del Aguila † | Bishop of Concepción, Chile | Bishop of Trujillo, Peru |
| 6 Jan | | Born | Giovanni Pergolini † | Montenuovo | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 11 Jan | | Born | Thomas Zarone † | Casal Versano | Bishop of Carinola (Calina), Italy |
| 17 Jan | | Born | Henri-Jacques de Montesquiou-Poylobon † | Balignac | Bishop of Sarlat, France |
| 18 Jan | 41.0 | Died | Manuel González Virtus † | Bishop of Córdoba (Tucumán), Argentina |
| 21 Jan | 35.1 | Ordained Priest | Joachim Henryk Przebendowski † | Priest | Bishop of Lutsk (Łuck), Ukraine |
| 30 Jan | 42.1 | Selected | Luis de Salcedo y Azcona † | Bishop of Coria, Spain | Archbishop of Sevilla {Seville}, Spain |
| 31 Jan | | Born | Giovanni Maria Castelvetri † | Modena | Bishop of Reggio Emilia, Italy |
| 14 Feb | 62.1 | Died | Juan Iñiguez Arnedo † | Bishop of Pamplona, Spain |
| 16 Feb | 77.7 | Died | Esprit-Valentin Fléchier † | Bishop of Nîmes, France |
| 19 Feb | 54.6 | Appointed | Fulvio Astalli † | Cardinal-Priest of Santi Quirico e Giulitta | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 39.2 | Confirmed | Henri-François-Xavier de Belsunce de Castelmoron † | Bishop of Marseille, France |
| 52.9 | Appointed | Giovanni Battista (Giambattista) Bussi † | Archbishop (Personal Title) of Ancona e Numana, Italy | Cardinal, Bishop |
| 48.8 | Appointed | Francisco Dorda, O. Cist. † | Bishop of Solsona, Spain |
| 59.4 | Appointed | Ulisse Giuseppe Gozzadini † | Archbishop (Personal Title) of Imola, Italy | Cardinal, Bishop |
| 80.6 | Appointed | Bandino Panciatici † | Cardinal-Priest of Santa Prassede | Cardinal, Prefect of the Congregation of the Council |
| 61.4 | Confirmed | Manuel Senjust Pagés † | Bishop of Vic, Spain |
| 66.9 | Appointed | Fabrizio Spada † | Cardinal, Cardinal-Bishop of Palestrina |
| 47.1 | Confirmed | François de Valbelle de Tourves † | Bishop of Saint-Omer, France |
| 21 Feb | | Died | Edward Comerford † | Archbishop of Cashel, Ireland |
| 22 Feb | 60.1 | Selected | Wilhelm von Leslie † | Coadjutor Bishop of Trieste, Italy | Bishop of Ljubljana, Slovenia |
| 67.6 | Died | Charles-Maurice Le Tellier † | Archbishop of Reims, France |
| 23 Feb | 34.5 | Ordained Priest | Jacobus Caracciolo † | Priest | Titular Archbishop of Ephesus |
| 1 Mar | | Born | Joannes Dominicus (Michael Antonius) Chiavassa (a S. Clara), O.C.D. † | Racconigi | Titular Bishop of Assuras |
| 2 Mar | 58.2 | Died | Paolo Andrea Borelli, B. † | Bishop of Noli, Italy |
| Born | Francesco Maria Forlani † | Capranica | Bishop of Civita Castellana e Orte, Italy |
| 4 Mar | 67.0 | Died | Callisto Lodigeri, O.S.M. † | Bishop of Montepulciano, Italy |
| 6 Mar | | Born | Joseph-François de Cadenet de Charleval † | Aix | Bishop of Agde, France |
| 9 Mar | 55.2 | Ordained Bishop | Henri du Puget † | Bishop of Digne, France |
| 10 Mar | 28.1 | Confirmed | Charles-François des Moustiers de Mérinville † | Bishop of Chartres, France |
| 59.9 | Appointed | Giovanni Gambi † | Bishop of Ascoli Piceno, Italy |
| 64.5 | Appointed | Ambrogio Spinola, B. † | Bishop of Luni e Sarzana, Italy |
| 39.4 | Appointed | Nicola Maria Tedeschi, O.S.B. † | Bishop of Lipari, Italy | Bishop Emeritus |
| 15 Mar | 23.1 | Ordained Priest | Bernardo Bernardi, O.F.M. Conv. † | Priest of Order of Friars Minor Conventual | Bishop of Acquapendente, Italy |
| 22.9 | Ordained Priest | Charles-François Couton (Cantoni) † | Priest | Bishop of Nice, France |
| 24.2 | Ordained Priest | Simone Gritti † | Priest | Bishop Emeritus of Acquapendente, Italy |
| 23.1 | Ordained Priest | Alessandro Magno, O. Cist. † | Priest of Order of Cistercians | Bishop of San Marco (Argentano), Italy |
| 23.1 | Ordained Priest | Callisto Maria (Vincenzo Antonio) Palombella † | Priest | Bishop of Terracina, Priverno e Sezze, Italy |
| 24.3 | Ordained Priest | Maximiliaan-Antoon van der Noot † | Priest | Bishop of Gent {Ghent, Gand}, Belgium |
| 16 Mar | | Born | Marcello Capano Orsini † | Polleca | Archbishop of Conza, Italy |
| 17 Mar | 71.2 | Died | Daniel-Louis de Baradat † | Bishop of Vabres, France |
| Born | Olivier-Simon Le Bon, M.E.P. † | Saint-Malo, France | Vicar Apostolic of Siam, Thailand |
| 20 Mar | 68.7 | Died | Johann Joseph von Breuner † | Archbishop of Praha {Prague}, Czech Republic |
| 22 Mar | 70.6 | Died | Sperello Sperelli † | Cardinal, Bishop Emeritus of Terni, Italy |
| 23 Mar | 65.8 | Died | Carlo Nicola de Massa † | Bishop of Venafro, Italy |
| 28 Mar | 64.2 | Died | Marcantonio Agazzi † | Bishop of Ceneda, Italy |
| 30 Mar | 48.9 | Ordained Bishop | Francisco Dorda, O. Cist. † | Bishop of Solsona, Spain |
| 61.5 | Ordained Bishop | Manuel Senjust Pagés † | Bishop of Vic, Spain |
| Apr | | Born | Tommaso Battiloro † | Arpino | Bishop Emeritus of San Severo, Italy |
| Born | Vincentius Drago † | Kotor | Bishop of Kotor (Cattaro), Montenegro |
| 53.8 | Died | Giacomo Falconetti, O.P. † | Bishop of Grosseto, Italy |
| 4 Apr | 23.3 | Ordained Priest | Francesco Iorio (Jorio) † | Priest | Bishop of Monopoli, Italy |
| 5 Apr | 23.1 | Ordained Priest | Costantino Serra, C.R.S. † | Priest of Orden de los Padres Somascos | Bishop of Albenga, Italy |
| 6 Apr | 47.3 | Ordained Bishop | François de Valbelle de Tourves † | Bishop of Saint-Omer, France |
| 7 Apr | 34.6 | Appointed | Jacobus Caracciolo † | Titular Archbishop of Ephesus |
| 50.3 | Appointed | Alfonso De’ Belincioni † | Bishop of Cagli, Italy |
| 47.8 | Appointed | Carlo Mascardi, B. † | Bishop of Ventimiglia, Italy |
| 44.4 | Appointed | Fortunato Morosini, O.S.B. † | Bishop of Treviso, Italy | Bishop of Brescia, Italy |
| 9 Apr | | Born | György Klimó † | Lopasson | Bishop of Pécs, Hungary |
| 12 Apr | | Died | Jean-François de Brezay (Brizay de Denonville) † | Bishop of (Saint-Bernard de) Comminges, France |
| 33.4 | Selected | Franz Karl von Kaunitz-Rietberg † | Bishop of Ljubljana, Slovenia |
| 13 Apr | 59.5 | Died | Johann Peter von Quentell † | Auxiliary Bishop of Münster, Germany |
| 16 Apr | | Born | Carlo Augusto Peruzzini, B. † | Fossombrone | Bishop of Macerata e Tolentino, Italy |
| 17 Apr | 16.2 | Professed | Valentín Moran Menéndez, O. de M. † | Member of Order of Our Lady of Mercy | Bishop Emeritus of Islas Canarias {Canary Islands}, Spain |
| 19 Apr | 27.5 | Ordained Deacon | Alessandro Borgia † | Deacon | Archbishop of Fermo, Italy |
| 23.3 | Ordained Priest | Nicolaus Tomasich † | Priest | Bishop of Scardona (Skradin), Italy |
| 22 Apr | 75.6 | Died | Laurent Buti (Buzzi) † | Bishop of Carpentras, France |
| 24 Apr | | Born | Louis-Philippe-François Mariauchau d’Esglis † | Québec | Bishop of Québec, Canada |
| 27 Apr | 77.1 | Died | Marcello Durazzo † | Cardinal, Bishop of Faenza, Italy |
| May | | Resigned | Charles Andrault de Maulevrier de Langeron † | Bishop of Autun, France | Bishop Emeritus |
| 3 May | | Born | Marcantonio Lombardi † | Verona | Bishop of Crema, Italy |
| 7 May | 54.8 | Appointed | Fulvio Astalli † | Cardinal-Priest of San Pietro in Vincoli | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 61.3 | Appointed | Giuseppe Sauli Bargali (Bargagli), C.R.M. † | Bishop of Noli, Italy |
| 38.3 | Appointed | Nicolaus de Camillis † | Bishop of Syros (e Milos), Greece | Bishop-Elect |
| 58.3 | Appointed | Kazimierz Łubieński † | Bishop of Kraków, Poland |
| 48.3 | Appointed | Nuno Álvares Pereira de Melo † | Bishop of Lamego, Portugal |
| 50.3 | Appointed | Michał Bartłomiej Tarło † | Bishop of Poznań, Poland |
| 49.4 | Appointed | Francesco Volanti † | Bishop of Stagno (Ston), Croatia |
| Appointed | Yurij Vynnyckyj (Winnicki) † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 9 May | | Born | Tommaso de Moncada, O.P. † | Messina | Archbishop of Messina, Italy |
| 14 May | | Born | Carlo Gagliardi † | Bellae | Bishop of Muro Lucano, Italy |
| 17 May | 42.5 | Died | Louis Thomas d’Acquin † | Bishop of Sées, France |
| 18 May | 28.3 | Ordained Bishop | Charles-François des Moustiers de Mérinville † | Bishop of Chartres, France |
| 19 May | 52.1 | Appointed | Donato Anzani † | Bishop of Marsico Nuovo, Italy |
| 36.2 | Appointed | Friedrich Karl von Schönborn † | Titular Bishop of Arcadiopolis in Asia | Bishop of Würzburg, Germany |
| 36.2 | Confirmed | Friedrich Karl von Schönborn † | Coadjutor Bishop of Bamberg, Germany | Bishop of Würzburg, Germany |
| 45.4 | Appointed | Pawel Antoni Załuski † | Auxiliary Bishop of Płock, Poland |
| 45.4 | Appointed | Pawel Antoni Załuski † | Titular Bishop of Alba | Auxiliary Bishop of Płock, Poland |
| 22 May | 64.9 | Died | Pál Széchényi, O.S.P.P.E. † | Archbishop of Kalocsa, Hungary |
| 28 May | 44.6 | Selected | Otto János Teofil Tóth (von Volkra) † | Bishop of Veszprém, Hungary |
| 30 May | | Born | Antonio Fernández Tobar † | Palencia | Bishop of Tui, Spain |
| Jun | 79.0 | Died | Ercole Domenico Monanni † | Bishop of Terracina, Priverno e Sezze, Italy |
| 3 Jun | 56.4 | Died | Alexandre de Chevriers de Saint-Mauris † | Bishop of Saintes, France |
| 8 Jun | 41.5 | Died | Charles Thomas Maillard de Tournon † | Cardinal, Titular Patriarch of Antiochia {Antioch} |
| 14 Jun | 23.3 | Ordained Priest | Matteu D’Angelis † | Priest | Bishop of Aleria, France |
| 24.1 | Ordained Priest | Felipe Itúrbide (Yturibe), O. Carm. † | Priest of Order of Our Lady of Mt. Carmel | Archbishop Emeritus of Dubrovnik (Ragusa), Croatia |
| 24.1 | Ordained Priest | Antonius Kacich † | Priest | Archbishop of Split (Spalato), Croatia |
| 23.4 | Ordained Priest | Antonio Zavarroni † | Priest | Bishop of Tricarico, Italy |
| 15 Jun | 73.4 | Ordained Bishop | Varlaam Sheptyskyi † | Bishop of Lviv (Ukrainian), Ukraine |
| 20 Jun | | Born | Benedetto Latilla, C.R.L. † | Napoli | Bishop Emeritus of Avellino e Frigento, Italy |
| 21 Jun | | Born | Serafino Brancone (Branconi), O.S.B. † | Napoli | Bishop Emeritus of Gallipoli, Italy |
| 23 Jun | 36.3 | Installed | Joseph de Guyon de Crochans † | Bishop of Cavaillon, France | Archbishop of Avignon, France |
| 25 Jun | | Born | Joannes Josephus Priego, O.P. † | Liman | Bishop of Paraguay |
| 26 Jun | | Born | Juan Manuel Merino Lumbreras † | Lumbreras | Bishop of Astorga, Spain |
| 28 Jun | 59.2 | Appointed | Fabrizio Paolucci † | Major Penitentiary of the Apostolic Penitentiary | Cardinal, Secretary of the Secretariat of State |
| 30 Jun | 50.5 | Died | François-Gaspard de La Mer de Matha † | Bishop of Aire, France |
| 74.5 | Died | Ascanio Paganelli † | Bishop of Montalto (delle Marche), Italy |