| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 47.0 | Appointed | Joseph-Vincent de Beni † | Bishop of Carpentras, France | Bishop Emeritus |
| Appointed | Felice Antonio Bianchi † | Auxiliary Bishop of Modena, Italy |
| Appointed | Felice Antonio Bianchi † | Titular Bishop of Pergamum | Auxiliary Bishop of Modena, Italy |
| 52.8 | Died | Nicola Bizzarri † | Bishop of Forli, Italy |
| Died | Cesare Antonio Caracciolo † | Archbishop of Conza, Italy |
| 42.0 | Appointed | Pierre-Marie-Madeleine Cortois de Balore † | Bishop of Alès (Alais), France | Bishop of Nimes, France |
| 59.0 | Appointed | Joseph-Dominique de Cheylus † | Bishop of Bayeux, France |
| 35.7 | Appointed | François Citadella † | Bishop of Acci and Mariana, France |
| 55.0 | Appointed | Claude-Marc-Antoine d'Apchon de Corgenon † | Archbishop of Auch, France |
| 64.8 | Died | Giuseppe Maria Foschi † | Bishop of Lucera, Italy |
| Appointed | Francisco Ramón Herboso y Figueroa † | Archbishop of La Plata o Charcas, Bolivia |
| Born | José Hurtado Mendoza † | | Auxiliary Bishop-Elect of Córdoba (Tucumán), Argentina |
| Born | Juan Manuel de Irrizarri y Peralta † | Habana, Cuba | Auxiliary Bishop of México, Federal District |
| 19.0 | Ordained Priest | Arnaud-Ferdinand de La Porte † | Priest | Bishop of Carcassonne, France |
| 34.0 | Appointed | Alexandre-François-Amédée-Adonis-Louis-Joseph de Lauzières de Thémines † | Bishop of Blois, France |
| 55.0 | Died | Benedetto Mattei † | Bishop of Marsi, Italy |
| 46.9 | Appointed | Louis-Marie de Nicolay † | Bishop of Cahors, France |
| 58.7 | Ordained Bishop | Francisco (Martinez) Polanco (López de Lorena) † | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| Born | José Manuel Eufrasio de Quiroga Sarmiento † | San Juan de Cuyo | Bishop of San Juan de Cuyo, Argentina |
| Died | Francesco Antonio Rocco † | Bishop of Capri, Italy |
| 84.9 | Died | Ippolito de Rossi † | Bishop of Senigallia, Italy |
| 52.0 | Ordained Bishop | Mateo Joaquin Rubio de Arevalo † | Bishop of Cebu, Philippines |
| 67.8 | Died | Ludovico Sabatini † | Bishop of L’Aquila, Italy |
| Appointed | Ignazio Andrea Sambiase † | Archbishop of Conza, Italy |
| 52.9 | Appointed | Francesco Ferdinando Sanseverino † | Archbishop of Monreale, Italy | Archbishop of Palermo, Italy |
| Born | Carlos de São José e Souza, O.C.D. † | Recife | Bishop of São Luís do Maranhão, Brazil |
| 47.0 | Appointed | Stefano Domenico Sceriman † | Bishop of Concordia, Italy | Bishop of Chioggia, Italy |
| 70.0 | Died | Stefano Gennaro Spani † | Bishop of Minervino Murge, Italy |
| Died | Giuseppe Sparano † | Archbishop of Acerenza e Matera, Italy |
| 14 Jan | 52.4 | Ordained Bishop | Esteban Lorenzo de Tristán y Esmenota † | Bishop of León en Nicaragua | Bishop of Guadalajara, Jalisco, México |
| 36.6 | Ordained Bishop | Jean-Denis de Vienne † | Auxiliary Bishop of Lyon, France |
| 19 Jan | 44.0 | Appointed | Alessandro Maria Odoardi † | Bishop of Perugia, Italy |
| 20 Jan | 62.6 | Died | Francisco Garrido de la Vega † | Bishop of Córdoba, Spain |
| 21 Jan | 22.3 | Ordained Priest | Nikodem Puzyna † | Priest | Auxiliary Bishop of Vilnius, Lithuania |
| 29 Jan | 62.8 | Appointed | Serafino Filangeri, O.S.B. † | Archbishop of Napoli {Naples}, Italy |
| 58.8 | Appointed | Antonio Jorge y Galván † | Archbishop of Granada, Spain |
| 39.4 | Appointed | Alessandro Garimberti † | Bishop of Borgo San Donnino, Italy |
| 54.1 | Appointed | Andrea Gioannetti, O.S.B. † | Titular Bishop of Hemeria | Cardinal, Archbishop of Bologna, Italy |
| 40.0 | Confirmed | Marie-Charles-Isidore de Mercy † | Bishop of Luçon, France | Archbishop of Bourges, France |
| 51.1 | Appointed | Ermenold Piesport, O.S.B. † | Auxiliary Bishop of Fulda, Germany |
| 51.1 | Appointed | Ermenold Piesport, O.S.B. † | Titular Bishop of Capharnaum | Auxiliary Bishop of Fulda, Germany |
| 51.8 | Appointed | Carlo Rezzonico (Jr.) † | Bishop of Porto e Santa Rufina, Italy | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 51.8 | Appointed | Carlo Rezzonico (Jr.) † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 30 Jan | 30.7 | Appointed | Wilhelm Florentin Fürst von Salm-Salm † | Bishop of Tournai {Doornik}, Belgium | Archbishop of Praha {Prague}, Czech Republic |
| Feb | 89.2 | Died | Tomás del Valle, O.P. † | Bishop of Cádiz, Spain |
| 4 Feb | 39.4 | Ordained Bishop | Alessandro Garimberti † | Bishop of Borgo San Donnino, Italy |
| 54.1 | Ordained Bishop | Andrea Gioannetti, O.S.B. † | Titular Bishop of Hemeria | Cardinal, Archbishop of Bologna, Italy |
| Born | Ignacy Ludwik Pawlowski † | | Archbishop of Mohilev, Belarus |
| 7 Feb | 73.9 | Died | Jean-François de Chastellard de Montillet de Grenaud † | Archbishop of Auch, France |
| 9 Feb | | Born | Pablo Jesús Corcuera Caserta † | Cádiz | Bishop of Vic, Spain |
| 11 Feb | | Born | Manuel Villar † | Pamplona | Bishop of Lérida, Spain |
| 18 Feb | | Born | Jean-François de Hercé † | Mayenne | Bishop Emeritus of Nantes, France |
| 40.0 | Ordained Bishop | Marie-Charles-Isidore de Mercy † | Bishop of Luçon, France | Archbishop of Bourges, France |
| 29 Feb | | Born | Giulio de Tommasi † | Capua | Bishop of San Severo, Italy |
| 3 Mar | 35.9 | Appointed | Jacques-Joseph-François de Vogüé † | Bishop of Dijon, France |
| 48.8 | Ordained Bishop | Friedrich Ludwig Franz Reichsfreiherr von Wangen zu Geroldseck † | Bishop of Basel, Switzerland |
| 5 Mar | | Born | Pablo García Abella, C.O. † | Madrid | Archbishop of Valencia, Spain |
| 13 Mar | 50.3 | Appointed | Karol Salbeck † | Bishop of Spiš, Slovakia |
| 16 Mar | 50.4 | Appointed | Giuseppe Garampi † | Apostolic Nuncio to Austria | Cardinal, Bishop of Montefiascone, Italy |
| 17 Mar | 51.3 | Ordained Bishop | Ermenold Piesport, O.S.B. † | Titular Bishop of Capharnaum | Auxiliary Bishop of Fulda, Germany |
| 21 Mar | 63.1 | Died | Francisco de Solís Folch de Cardona † | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 23 Mar | 24.5 | Ordained Priest | François-Marie Bigex † | Priest | Archbishop of Chambéry, France |
| 25 Mar | 68.2 | Died | Jean-Louis du Buisson de Beauteville † | Bishop of Alès (Alais), France |
| Apr | | Died | Patrick Robert Kirwan † | Bishop of Achonry, Ireland |
| 6 Apr | 23.5 | Ordained Priest | Hieronim Stojnowski (Stroynowski) † | Priest | Bishop of Vilnius, Lithuania |
| 8 Apr | 45.7 | Ordained Deacon | Nicola Colonna di Stigliano † | Deacon | Cardinal, Cardinal-Priest of S. Stefano al Monte Celio |
| 9 Apr | 45.7 | Ordained Priest | Nicola Colonna di Stigliano † | Priest | Cardinal, Cardinal-Priest of S. Stefano al Monte Celio |
| 11 Apr | | Born | Matthäus Kutschank † | Nucknitz | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 12 Apr | | Born | Víctor Damián Sáez y Sánchez Mayor † | Budia | Bishop of Tortosa, Spain |
| 13 Apr | | Born | Giuseppe Pecci † | Gubbio | Cardinal, Bishop of Gubbio, Italy |
| 14 Apr | 24.2 | Ordained Priest | Fabrizio Selvi † | Priest | Bishop of Grosseto, Italy |
| 15 Apr | 33.6 | Appointed | Francisco Mateo Aguiriano Gómez † | Auxiliary Bishop of Toledo, Spain | Bishop of Calahorra y La Calzada, Spain |
| 33.6 | Appointed | Francisco Mateo Aguiriano Gómez † | Titular Bishop of Thagaste | Bishop of Calahorra y La Calzada, Spain |
| 39.7 | Elevated to Cardinal | Giovanni Archinto † | In Pectore | Cardinal, Cardinal-Bishop of Sabina |
| 65.2 | Appointed | Antonio Branciforte Colonna † | Archbishop (Personal Title) of Agrigento (Girgenti), Italy | Cardinal, Bishop |
| 38.4 | Appointed | Aloisio Buonamici † | Bishop of Colle di Val d’Elsa, Italy | Bishop of Volterra, Italy |
| 59.1 | Appointed | Giuseppe Ippoliti † | Bishop of Pistoia-Prato, Italy |
| 68.5 | Appointed | Pascual López Estaún † | Bishop of Huesca, Spain |
| 40.6 | Appointed | Ranieri Mancini † | Bishop of Fiesole, Italy | Bishop Emeritus |
| 40.3 | Appointed | Pedro Benito Antonio Quevedo y Quintano † | Cardinal, Bishop of Orense, Spain |
| 58.3 | Confirmed | Maximilian Augustinus Christoph Reichsfreiherr von Rodt † | Bishop of Konstanz {Constance}, Germany |
| 53.1 | Appointed | Francesco Ferdinando Sanseverino † | Archbishop of Palermo, Italy |
| 50.5 | Elevated to Cardinal | Luigi Valenti Gonzaga † | In Pectore | Cardinal, Librarian of the Vatican Library |
| 27 Apr | 67.4 | Died | Simone Buonacorsi † | Cardinal, Cardinal-Priest of S. Giovanni a Porta Latina |
| 5 May | 59.4 | Died | Johann Andreas Kaiser † | Bishop of Hradec Králové, Czech Republic |
| 7 May | 67.7 | Died | Luis Fernando de Hoyos y Mier † | Bishop of Michoacán, Michoacán, México |
| 8 May | 56.9 | Died | José Laplana Castellón † | Bishop of Tarazona, Spain |
| 12 May | 55.6 | Ordained Bishop | Martin Nugk von Lichtenhoff † | Titular Bishop of Cisamus | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 16 May | | Born | Luigi Emmanuele Nicolo Lambruschini, B. † | Sestri Levante | Cardinal, Prefect of the Congregation of Rites |
| 20 May | 47.3 | Appointed | Gregorio Alessandri † | Bishop of Cortona, Italy |
| 39.8 | Elevated to Cardinal | Giovanni Archinto † | Cardinal, Cardinal-Bishop of Sabina |
| 49.3 | Appointed | József Batthyány † | Cardinal, Archbishop of Esztergom, Hungary |
| 50.7 | Appointed | Guido Calcagnini † | Archbishop (Personal Title) of Osimo e Cingoli, Italy | Cardinal, Bishop |
| 50.7 | Elevated to Cardinal | Guido Calcagnini † | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 45.8 | Appointed | Nicola Colonna di Stigliano † | Titular Archbishop of Sebastea | Cardinal, Cardinal-Priest of S. Stefano al Monte Celio |
| 61.4 | Appointed | Francisco Javier Delgado Venegas † | Archbishop of Sevilla {Seville}, Spain | Cardinal, Patriarch of West Indies, Antilles |
| 51.0 | Elevated to Cardinal | Angelo Maria Durini † | Cardinal, Titular Archbishop of Ancyra |
| 31.0 | Confirmed | Wilhelm Florentin Fürst von Salm-Salm † | Bishop of Tournai {Doornik}, Belgium | Archbishop of Praha {Prague}, Czech Republic |
| 50.6 | Appointed | Giuseppe Garampi † | Archbishop (Personal Title) of Montefiascone, Italy | Cardinal, Bishop |
| 49.4 | Appointed | Federico Maria Giovanelli † | Patriarch of Venezia {Venice}, Italy |
| Born | Joseph Prinz von Hohenzollern-Hechingen † | Troppau | Bishop of Warmia, Poland |
| 50.6 | Elevated to Cardinal | Luigi Valenti Gonzaga † | Cardinal, Librarian of the Vatican Library |
| 36.1 | Confirmed | Jacques-Joseph-François de Vogüé † | Bishop of Dijon, France |
| 26 May | 33.7 | Ordained Bishop | Francisco Mateo Aguiriano Gómez † | Titular Bishop of Thagaste | Bishop of Calahorra y La Calzada, Spain |
| 27 May | | Born | Jan Marceli Gutkowski † | Plock | Bishop Emeritus of Podlachia o Janów, Poland |
| 28 May | 45.9 | Ordained Bishop | Nicola Colonna di Stigliano † | Titular Archbishop of Sebastea | Cardinal, Cardinal-Priest of S. Stefano al Monte Celio |
| 29 May | 51.5 | Appointed | Peter Michael Vigil Reichsgraf von Thun und Hohenstein † | Bishop of Trento, Italy |
| 1 Jun | 63.5 | Ordained Deacon | Paolo Francesco Antamori † | Deacon of Roma {Rome}, Italy | Cardinal, Bishop of Orvieto, Italy |
| 23.1 | Ordained Priest | Michele Belli † | Priest of Roma {Rome}, Italy | Titular Archbishop of Nazianzus |
| 28.6 | Ordained Priest | Francsco Antonio Javier de Gardoqui Arriquíbar † | Cardinal, Priest of Palencia, Spain |
| 27.9 | Ordained Priest | László Koszeghy von Romete † | Priest of Society of Jesus | Bishop of Csanád, Hungary |
| 23.4 | Ordained Priest | Ján Baptist Richolosky † | Priest | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 24.1 | Ordained Priest | Claude-François de Thiollaz † | Priest of Annecy, France | Bishop |
| 2 Jun | 56.0 | Installed | Agustín de Alvarado y Castillo † | Archbishop of Santafé en Nueva Granada, Colombia | Bishop of Ciudad Rodrigo, Spain |
| 9 Jun | 36.2 | Ordained Bishop | Jacques-Joseph-François de Vogüé † | Bishop of Dijon, France |
| 10 Jun | 84.4 | Died | Paul de Ribeyre † | Bishop of Saint-Flour, France |
| 13 Jun | 69.8 | Died | Cristoforo Sizzo de Noris † | Bishop of Trento, Italy |
| 20 Jun | | Born | Luigi Del Drago † | Rome | Cardinal, Cardinal-Priest of S. Lorenzo in Panisperna |
| Appointed | Gennaro Giordano † | Bishop of Acerra, Italy |
| 22 Jun | | Appointed | Philip Phillips † | Bishop of Achonry, Ireland | Archbishop of Tuam, Ireland |
| 23 Jun | | Ordained Bishop | Felice Antonio Bianchi † | Titular Bishop of Pergamum | Auxiliary Bishop of Modena, Italy |
| 24 Jun | 24.7 | Ordained Priest | Georg Franz Lock † | Priest of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany | Prefect |
| 26 Jun | | Born | Giacomo Monico † | Riese | Cardinal, Patriarch of Venezia {Venice}, Italy |
| 28 Jun | | Born | Jakob Brand † | Mespelbrunn | Bishop of Limburg, Germany |
| 29 Jun | 54.3 | Appointed | Juan Molina Lario y Navarro † | Bishop of Málaga, Spain |
| 30 Jun | 53.1 | Ordained Bishop | Antonio Caballero y Góngora † | Bishop of Yucatán (Mérida), Yucatán, México | Bishop of Córdoba, Spain |
| 42.5 | Ordained Bishop | Pierre-Marie-Madeleine Cortois de Balore † | Bishop of Alès (Alais), France | Bishop of Nimes, France |