| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Appointed | Hyacinthus Archiopoli † | Titular Bishop of Callipolis |
| 22.9 | Ordained Priest | Joseph Franz Anton von Auersperg † | Priest of Passau, Germany | Cardinal, Bishop |
| Born | Carlo-Maria Cernelli † | Napoli | Archbishop of Chieti, Italy |
| 26.3 | Ordained Priest | Franz Ludwig von Erthal † | Priest | Bishop of Würzburg, Germany |
| 54.0 | Died | Juan de La Fuente Yepes † | Bishop of Nueva Segovia, Philippines |
| 70.0 | Died | Anton Joseph von Lamberg † | Auxiliary Bishop Emeritus of Passau, Germany |
| 55.5 | Died | Dario de Longhis † | Bishop Emeritus of Syros (e Milos), Greece |
| 49.0 | Selected | Plaicart de Raigecourt † | Bishop of Aire, France |
| 1 Jan | | Born | Francesco Cesarei Leoni † | Perugia | Cardinal, Bishop of Jesi, Italy |
| 3 Jan | 64.0 | Appointed | Adeodato Andrea Aldobrandini (Bivignano) † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 31.6 | Appointed | Marco Aurelio Balbis Bertone † | Bishop of Novara, Italy |
| 47.2 | Appointed | Giuseppe Belletta (Bellotti) † | Bishop of Massa Lubrense, Italy |
| 56.0 | Appointed | Bonaventura Bernardi † | Bishop of Ossero (Osor), Croatia |
| 36.6 | Appointed | Philipp Wirich Lorenz von Daun zu Sassenheim und Callenborn † | Auxiliary Bishop of Passau, Germany |
| 36.6 | Appointed | Philipp Wirich Lorenz von Daun zu Sassenheim und Callenborn † | Titular Bishop of Tium | Auxiliary Bishop of Passau, Germany |
| 56.3 | Appointed | Nicolaus Dinaricio † | Archbishop of Split (Spalato), Croatia |
| 48.1 | Appointed | Giorgio Doria † | Cardinal-Priest of Santa Cecilia | Cardinal, Cardinal-Priest of Sant’Agostino |
| 54.1 | Appointed | Francesco Ferrante † | Bishop of Andria, Italy |
| 43.5 | Appointed | Pietro Maria Franzesi † | Bishop of Montepulciano, Italy |
| 29.9 | Appointed | Georgius Giunchi † | Bishop of Pult, Albania | Bishop of Bar (Antivari), Montenegro |
| 59.8 | Confirmed | Louis-César-Constantin de Rohan-Guémené-Montbazon † | Cardinal, Bishop of Strasbourg, France |
| 46.0 | Appointed | Filippo Sanseverino † | Bishop of Alife, Italy | Bishop Emeritus |
| 60.8 | Appointed | Innocenzo Sanseverino † | Titular Archbishop of Philadelphia in Arabia | Bishop Emeritus of Alife, Italy |
| 66.1 | Appointed | Domenico Zicari † | Archbishop of Reggio Calabria, Italy |
| 6 Jan | 47.2 | Ordained Bishop | Giuseppe Belletta (Bellotti) † | Bishop of Massa Lubrense, Italy |
| 56.0 | Ordained Bishop | Bonaventura Bernardi † | Bishop of Ossero (Osor), Croatia |
| 54.1 | Ordained Bishop | Francesco Ferrante † | Bishop of Andria, Italy |
| 46.0 | Ordained Bishop | Filippo Sanseverino † | Bishop of Alife, Italy | Bishop Emeritus |
| 7 Jan | | Born | Antonio Pérez Minayo † | Urueña | Bishop of Almería, Spain |
| 8 Jan | 86.8 | Died | Giovanni Maria Benzoni † | Bishop Emeritus of Chioggia, Italy |
| 13 Jan | | Born | Isidoro Spanò † | Marsala | Auxiliary Bishop of Mazara del Vallo, Italy |
| 16 Jan | 64.0 | Ordained Bishop | Adeodato Andrea Aldobrandini (Bivignano) † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 31.6 | Ordained Bishop | Marco Aurelio Balbis Bertone † | Bishop of Novara, Italy |
| 23.4 | Ordained Priest | Josephus Fengler † | Priest | Bishop of Győr (Raab), Hungary |
| 43.5 | Ordained Bishop | Pietro Maria Franzesi † | Bishop of Montepulciano, Italy |
| 17 Jan | 59.4 | Selected | Adalbert Walderdorf, O.S.B. † | Bishop of Fulda, Germany |
| 27 Jan | | Born | Abbon-Pierre-François Bonnel de la Brageresse † | Mende | Bishop Emeritus of Viviers, France |
| 28 Jan | | Born | Nicolás García Jerez, O.P. † | Murcia, Spain | Bishop of Nicaragua |
| 30 Jan | 23.0 | Ordained Priest | Andrea Benedetto Ganassoni, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Feltre, Italy |
| 5 Feb | 66.8 | Died | Diego Martínez Garrido, O.S. † | Bishop Emeritus of Cartagena, Colombia |
| 7 Feb | 65.9 | Died | Anton Johann Wenzel Wokaun (Woknau) † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 11 Feb | 74.6 | Died | Francesco Landi Pietra † | Cardinal, Archbishop Emeritus of Benevento, Italy |
| 28 Feb | | Born | Giulio Maria Alvisini † | Bocchignano | Bishop of Fossombrone, Italy |
| Born | Domenico Buttaoni † | Tolfa | Bishop of Fabriano e Matelica, Italy |
| Born | Antonio Gabriele Severoli † | Faenza | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 6 Mar | 77.5 | Died | Franz Konrad von Stadion und Thannhausen † | Bishop of Bamberg, Germany |
| 10 Mar | | Born | Peter Bernardine Collingridge, O.F.M. † | Fritwell, Oxfordshire | Vicar Apostolic of Western District, England, Great Britain |
| 52.6 | Died | Johann Joseph von Trautson zu Falkenstein (Trauston) † | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 11 Mar | | Born | Godfried Joseph Crüts van Creits † | Maastricht, Netherlands | Bishop of Sankt Pölten, Austria |
| 14 Mar | 39.8 | Ordained Priest | Antonio Bonifacio Coelho † | Priest | Auxiliary Bishop of Lisboa {Lisbon}, Portugal |
| 15 Mar | 51.5 | Died | Nicolò Lercari † | Titular Archbishop of Rhodus |
| 42.4 | Selected | Christoph Bartholomäus Anton Migazzi Von Waal Und Sonnenthurn † | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 16 Mar | 60.0 | Ordained Bishop | Louis-César-Constantin de Rohan-Guémené-Montbazon † | Cardinal, Bishop of Strasbourg, France |
| 20 Mar | 61.7 | Resigned | Giovanni Battista Bortoli † | Bishop of Feltre, Italy | Bishop Emeritus |
| 21 Mar | 81.4 | Died | Nicolò Maria Lercari † | Cardinal, Secretary Emeritus of the Secretariat of State |
| 22 Mar | 86.4 | Died | Antonio Carrara † | Bishop of Fondi (Fundi), Italy |
| 23 Mar | 48.4 | Ordained Bishop | Johann Anton von Federspiel † | Bishop of Chur, Switzerland |
| 26 Mar | 56.5 | Died | Giacinto Maria Giannucci † | Bishop of Isernia, Italy |
| 28 Mar | 63.6 | Appointed | Mariano Amato † | Bishop of Crotone (Cotrone), Italy |
| 50.1 | Appointed | Pierre-Joseph Artaud † | Bishop of Cavaillon, France |
| 61.7 | Appointed | Giovanni Battista Bortoli † | Titular Archbishop of Nazianzus | Bishop Emeritus of Feltre, Italy |
| 55.9 | Appointed | Francisco José Catalán Ocón † | Bishop of Urgell, Spain |
| Confirmed | Tobie El-Khazen † | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| 62.4 | Appointed | François-Marie de Mansi † | Archbishop of Avignon, France |
| 47.6 | Appointed | François Mattei † | Titular Archbishop of Corinthus | Patriarch of Alexandria {Alessandria} |
| 32.8 | Appointed | Andrea Antonio Silverio Minucci † | Bishop of Feltre, Italy | Archbishop of Fermo, Italy |
| 56.8 | Appointed | Felipe Ruiz de Ausmendi † | Bishop of Santo Domingo, Dominican Republic |
| 66.6 | Appointed | António de Sousa, O.S.A. † | Bishop of Porto, Portugal |
| 59.6 | Confirmed | Adalbert Walderdorf, O.S.B. † | Bishop of Fulda, Germany |
| 29 Mar | 56.0 | Died | Francisco Javier Pérez Baroja y Muro † | Bishop of Teruel, Spain |
| 31 Mar | 16.6 | Professed | Joaquim de Santa Clara Brandão (Lopes), O.S.B. † | Member of Order of Saint Benedict | Archbishop of Évora, Portugal |
| 1 Apr | | Died | Bartolomé Camacho Madueño † | Bishop of Tortosa, Spain |
| 59.9 | Died | Giuseppe Filippo Felissano † | Bishop of Asti, Italy |
| Born | Fabrizio Sceberras Testaferrata † | Valletta, Malta | Cardinal, Bishop of Senigallia, Italy |
| 2 Apr | 51.8 | Selected | José Antonio Basurco y Herrera † | Bishop of Buenos Aires, Argentina |
| 3 Apr | 47.6 | Ordained Bishop | François Mattei † | Titular Archbishop of Corinthus | Patriarch of Alexandria {Alessandria} |
| 32.8 | Ordained Bishop | Andrea Antonio Silverio Minucci † | Bishop of Feltre, Italy | Archbishop of Fermo, Italy |
| 6 Apr | 92.4 | Died | Pietro Galletti † | Bishop of Catania, Italy |
| 7 Apr | 71.2 | Died | Juan Francisco Guillén † | Archbishop of Burgos, Spain |
| 58.4 | Died | Mikołaj Gerard Wyżycki † | Archbishop of Lviv, Ukraine |
| 10 Apr | 63.7 | Ordained Bishop | Mariano Amato † | Bishop of Crotone (Cotrone), Italy |
| 11 Apr | 25.0 | Ordained Priest | Domenico Maria Gentile † | Priest | Bishop Emeritus of Savona, Italy |
| 17 Apr | 43.3 | Selected | Antoine-Joseph D’Amat de Volx † | Bishop of Senez, France |
| 20 Apr | 72.5 | Died | Paul Alpheran de Bussan, O.S.Io.Hieros. † | Bishop of Malta |
| 21 Apr | 78.0 | Died | Giovanni Girolamo della Torre, B. † | Bishop of Luni e Sarzana, Italy |
| 49.2 | Selected | Adam Friedrich von Seinsheim † | Bishop of Bamberg, Germany | Bishop of Würzburg, Germany |
| 27 Apr | | Born | Jakob Peregrin Paulitsch † | Gleinach | Bishop of Gurk, Austria |
| 29 Apr | 55.8 | Died | Frédéric-Jérôme de La Rochefoucauld † | Cardinal, Archbishop of Bourges, France |
| 30 Apr | 82.8 | Died | Johann Anton von Freyberg-Hopferau † | Bishop of Eichstätt, Germany |
| 5 May | | Born | Remigio Crescini, O.S.B. † | Piacenza | Cardinal, Bishop of Parma, Italy |
| 17 May | 74.6 | Died | Miguel Valejo Berlanga, O.SS.T. † | Bishop of Guadix, Spain |
| 22 May | 56.4 | Appointed | Giulio Cesare Lomellino, C.R. † | Bishop of Luni e Sarzana, Italy |
| 23 May | 52.0 | Confirmed | José Antonio Basurco y Herrera † | Bishop of Buenos Aires, Argentina |
| 43.7 | Appointed | Toussaint Duvernin † | Auxiliary Bishop of Strasbourg, France |
| 43.7 | Appointed | Toussaint Duvernin † | Titular Bishop of Arad | Auxiliary Bishop of Strasbourg, France |
| 59.5 | Appointed | Antonio Andrea Galli, C.R.SS.S. † | Cardinal, Cardinal-Priest of San Pietro in Vincoli |
| 60.4 | Appointed | Cayetano Marcellano y Agramont † | Bishop of Trujillo, Peru | Archbishop of La Plata o Charcas, Bolivia |
| 51.8 | Appointed | Manuel Macías Pedrejón † | Bishop of Lérida, Spain |
| 42.6 | Confirmed | Christoph Bartholomäus Anton Migazzi Von Waal Und Sonnenthurn † | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 49.3 | Confirmed | Adam Friedrich von Seinsheim † | Bishop of Bamberg, Germany | Bishop of Würzburg, Germany |
| 69.3 | Appointed | Luca Melchiore Tempi † | Cardinal, Cardinal-Priest of Santa Croce in Gerusalemme |
| 25 May | 32.9 | Appointed | Carlo Giuseppe Filippa della Martiniana † | Bishop of Saint-Jean-de-Maurienne, France | Cardinal, Bishop of Vercelli, Italy |
| 26 May | 60.3 | Died | Polycarpo de Sousa (Souza), S.J. † | Bishop of Peking [Beijing], China |
| 29 May | 74.4 | Died | Léonor III de Goyon de Matignon † | Bishop of Coutances, France |
| 30 May | 56.4 | Ordained Bishop | Giulio Cesare Lomellino, C.R. † | Bishop of Luni e Sarzana, Italy |
| 31 May | | Died | Miklós József Csáky † | Archbishop of Esztergom, Hungary |
| Born | Vasco José a Domina Nostra de Bona Morte Lobo, C.R.S.A. † | São Miguel de Facha, Portugal | Prelate Emeritus of Mozambico, Mozambique |
| 2 Jun | | Died | Nicolaus de Marchis † | Titular Bishop of Nemesi |
| 3 Jun | | Born | Giambattista Castelnuovo † | Cesana Brianza | Bishop of Como, Italy |
| 73.4 | Died | Giulio Sabbatini, Sch. P. † | Bishop of Modena, Italy |
| 4 Jun | 31.3 | Ordained Priest | Gennaro Antonucci † | Priest | Bishop of Molfetta, Italy |
| 24.1 | Ordained Priest | Spiridione Berioli † | Priest | Archbishop of Urbino, Italy |
| 77.1 | Died | Nicolas-Joseph de Paris † | Bishop Emeritus of Orléans, France | Bishop |
| 31.0 | Ordained Priest | Giovanni Battista Filippo Tenderini † | Priest | Bishop Emeritus of Anagni, Italy |
| 8 Jun | | Born | Ercole Consalvi † | Rome, Italy | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 12 Jun | 56.1 | Ordained Bishop | Francisco José Catalán Ocón † | Bishop of Urgell, Spain |
| Born | François-Joseph de Villeneuve-Esclapon † | Grasse | Bishop of Verdun, France |
| 14 Jun | | Born | Andreas Maria de Maistre † | Chambery | Bishop-Elect of Aosta, Italy |
| 16 Jun | | Born | Salvador de Sanmartin y Cuevas † | Guadalajara | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 19 Jun | 59.8 | Ordained Bishop | Adalbert Walderdorf, O.S.B. † | Bishop of Fulda, Germany |
| 21 Jun | | Succeeded | Richard Lincoln † | Archbishop of Dublin, Ireland |
| Died | John Linegar † | Archbishop of Dublin, Ireland |
| 26 Jun | 57.5 | Ordained Bishop | Manuel Sosa Betencourt † | Bishop of Cartagena, Colombia | Bishop of Santafé en Nueva Granada, Colombia |