| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Basile Mansur Asmar † | Telkef | Archbishop Emeritus of Gazireh (Gezira) (Chaldean), Turkey |
| 48.7 | Appointed | Josafat Bastasic (Bastasyc), O.S.B.M. † | Bishop of Križevci (Kreutz) (Križevci), Croatia |
| 72.4 | Died | Nicola Ciafaglione (Cifaglione) † | Archbishop of Messina, Italy |
| 38.8 | Resigned | Etienne-André-François de Paule de Fallot de Béaupré de Beaumont † | Bishop of Vaison, France | Bishop Emeritus |
| 16.8 | Professed | Franz Ferdinand (Johann Franz) Fritz, O.S.B. † | Member of Order of Saint Benedict | Bishop of Hildesheim, Germany |
| 79.8 | Died | Charles-François de Pélissier de Saint-Ferréol † | Bishop Emeritus of Vaison, France |
| 34.8 | Ordained Priest | Alexis Pótsy † | Priest | Bishop of Mukachevo (Munkács) (Ruthenian), Ukraine |
| 21.8 | Ordained Priest | Giuseppe Maria Velzi, O.P. † | Priest of Order of Friars Preachers | Cardinal, Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 4 Jan | 34.9 | Ordained Bishop | Charles-Maurice de Talleyrand-Périgord † | Bishop of Autun, France | Bishop Emeritus |
| 5 Jan | 67.3 | Died | Giambattista Muggiasca † | Bishop of Como, Italy |
| 6 Jan | 51.7 | Succeeded | Franz Egon von Fürstenberg † | Bishop of Hildesheim, Germany |
| 51.7 | Succeeded | Franz Egon von Fürstenberg † | Bishop of Paderborn, Germany | Bishop of Hildesheim, Germany |
| 23.2 | Ordained Priest | Franciszek Borgiasz Mackiewicz † | Priest | Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 61.8 | Died | Friedrich Wilhelm von Westphalen † | Bishop of Hildesheim, Germany |
| 10 Jan | 69.6 | Died | Domenico Orsini d’Aragona † | Cardinal, Cardinal-Deacon of Santa Maria in Via Lata |
| 11 Jan | 25.5 | Ordained Bishop | Pierre-François-Martial de Loménie † | Titular Archbishop of Traianopolis in Rhodope | Coadjutor Archbishop of Sens, France |
| 12 Jan | | Born | Joseph Rosati, C.M. † | Sora, Italy | Bishop of Saint Louis, Missouri, USA |
| 15 Jan | | Born | Vincenzo Menchi † | Firenze | Bishop of Fiesole, Italy |
| Born | Antonio María Sánchez Cid y Carrascal, C.O. † | Fregenal de la Sierra | Bishop of Coria, Spain |
| 45.8 | Ordained Bishop | Johann Nepomuk von Wolf † | Titular Bishop of Dorylaëum | Bishop of Regensburg, Germany |
| 17 Jan | 78.2 | Died | Andrea Negroni † | Cardinal, Cardinal-Deacon of Sant’Agata de’ Goti |
| 18 Jan | 72.3 | Died | Gaspar de Bragança † | Archbishop of Braga, Portugal |
| Born | Salvador Sanz Grado † | Madriguera | Bishop of Salamanca, Spain |
| 19 Jan | 63.5 | Died | Santiago José Echaverría Nieto de Osorio y Elguera † | Bishop of Tlaxcala, México |
| 20 Jan | 46.8 | Died | Cyrillus Antonini † | Bishop of Anagni, Italy |
| 46.3 | Died | Pedro Luis Ozta Múzquiz † | Bishop of Calahorra y La Calzada, Spain |
| 29 Jan | 70.3 | Appointed | Giovanni Maria Riminaldi † | Cardinal, Cardinal-Priest of San Silvestro in Capite |
| Feb | 72.1 | Died | Gennaro Giordano † | Bishop of Acerra, Italy |
| 3 Feb | | Born | Girolamo Conversini † | Pistoia | Bishop of Cortona, Italy |
| 7 Feb | 18.0 | Professed | Roman Sebastian (Franz Xaver) Zängerle, O.S.B. † | Member of Order of Saint Benedict | Bishop of Seckau, Austria |
| 8 Feb | 40.9 | Ordained Bishop | Joseph Anton Gall † | Bishop of Linz, Austria |
| 51.5 | Ordained Bishop | Victorius (Franciscus Xaverius) Schweizer, O.C.D. † | Titular Bishop of Gabala |
| 16 Feb | 69.0 | Died | Giuseppe Coppula † | Bishop of Lipari, Italy |
| Born | Angelo Filipponi † | Palermo | Bishop Emeritus of Nardò, Italy |
| 17 Feb | 73.8 | Died | Paolo Francesco Giustiniani, O.F.M. Cap. † | Bishop Emeritus of Treviso, Italy |
| 22 Feb | 42.3 | Ordained Bishop | Joannes Bapt. Jesich † | Titular Bishop of Oreus | Bishop of Senj (-Modruš), Croatia |
| 42.1 | Ordained Bishop | Jean-Baptiste Marie Scipion Ruffo (Roux) de Bonneval † | Bishop of Senez, France | Bishop Emeritus |
| 24 Feb | 45.0 | Installed | François de Fontanges † | Archbishop of Toulouse, France | Bishop of Autun, France |
| 25 Feb | 58.9 | Died | Antonius Belglava † | Bishop of Trogir (Traù), Croatia |
| 27 Feb | 80.8 | Resigned | Josephus Aluffi † | Bishop of Bagnoregio (Bagnorea), Italy | Bishop Emeritus |
| 1 Mar | 40.9 | Installed | Joseph Anton Gall † | Bishop of Linz, Austria |
| 2 Mar | | Born | Mario Giuseppe Mirone † | Catania | Bishop of Noto, Italy |
| 7 Mar | 24.1 | Ordained Priest | Emmanuele Custo † | Priest | Bishop of Mazara del Vallo, Italy |
| 24.3 | Ordained Priest | Joseph Knauer † | Priest of Wrocław (Breslau), Poland | Bishop |
| 23.1 | Ordained Priest | Francisco de São Luiz (Manoel Justiniano) Saraiva, O.S.B. † | Priest of Order of Saint Benedict | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 24.4 | Ordained Priest | Wenceslas Urban von Stuffler † | Priest of Brno, Czech Republic | Bishop |
| 11 Mar | | Born | António Bernardo da Fonseca Monís † | Moncorvo | Bishop of Porto, Portugal |
| 13 Mar | 38.2 | Installed | Antoine-Félix de Leyris d’Esponchez † | Bishop of Perpignan-Elne, France |
| 15 Mar | 44.2 | Died | John Dunne † | Bishop of Ossory, Ireland |
| 28 Mar | 23.2 | Ordained Priest | Johann Martin Manl † | Priest of Mainz, Germany | Bishop of Eichstätt, Germany |
| 24.2 | Ordained Priest | Jean-François de Saunhac-Belcastel † | Priest | Bishop of Perpignan-Elne, France |
| 29 Mar | 68.7 | Died | Giovanni Cornaro † | Cardinal, Cardinal-Deacon of San Cesareo in Palatio |
| Born | Luigi Fransoni † | Genova | Archbishop of Torino {Turin}, Italy |
| 30 Mar | 57.9 | Elevated to Cardinal | Tommaso Antici † | |
| 55.2 | Elevated to Cardinal | Joseph Franz Anton von Auersperg † | Cardinal, Bishop of Passau, Germany |
| 36.4 | Appointed | Giovanni Martino Bernardoni Baccolo † | Bishop of Kotor (Cattaro), Montenegro | Titular Bishop of Famagusta |
| 46.2 | Appointed | Ignazio-Gaetano Boncompagni-Ludovisi † | Cardinal-Deacon of Santa Maria in Via Lata | Cardinal, Secretary Emeritus of the Secretariat of State |
| 57.3 | Elevated to Cardinal | Stefano Borgia † | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 57.6 | Elevated to Cardinal | Ignazio Busca † | Cardinal, Chamberlain (Camerlengo) of the College of Cardinals |
| 49.9 | Elevated to Cardinal | Filippo Campanelli † | Cardinal, Cardinal-Deacon of San Cesareo in Palatio |
| 64.2 | Appointed | Martinus Chyczewski † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland | Auxiliary Bishop Emeritus |
| 64.2 | Appointed | Martinus Chyczewski † | Titular Bishop of Torone | Auxiliary Bishop Emeritus of Włocławek (Kujawy, Kalisze), Poland |
| 51.2 | Appointed | Martinus Cordella † | Bishop of Bagnoregio (Bagnorea), Italy |
| 52.1 | Elevated to Cardinal | Vittorio Maria Baldassare Gaetano Costa d’Arignano † | Cardinal, Archbishop of Torino {Turin}, Italy |
| 50.5 | Appointed | Ignatius Darabanth, O.S.B.M. † | Bishop of Oradea Mare {Gran Varadino} (Romanian), Romania |
| 44.7 | Appointed | Giovanni Devoti † | Bishop of Anagni, Italy | Bishop Emeritus |
| 42.2 | Appointed | Henri-Charles du Lau d’Allemans † | Bishop of Grenoble, France |
| 40.0 | Appointed | Antonio Maria Doria Pamphilj † | Cardinal-Deacon of Santa Maria ad Martyres | Cardinal, Archpriest of the Basilica di Santa Maria Maggiore {Saint Mary Major Basilica} |
| 60.5 | Appointed | Antonio Feliú y Centena † | Bishop of Santiago de Cuba |
| 74.2 | Appointed | Raniero Finocchietti † | Cardinal, Cardinal-Deacon of Sant’Agata de’ Goti |
| 50.2 | Appointed | Francisco Gomes de Avelar, C.O. † | Bishop of Faro {Algarve}, Portugal |
| 52.0 | Confirmed | Adalbert (Wilhelm Adolph Heinrich) von Harstall, O.S.B. † | Bishop of Fulda, Germany |
| 56.1 | Appointed | Ignace-François de Joannis de Verclos † | Bishop of Accia and Mariana, France |
| 66.5 | Elevated to Cardinal | Francisco Antonio de Lorenzana y Butrón † | Cardinal, Archbishop Emeritus of Toledo, Spain |
| 32.6 | Resigned | José Maria de Melo, C.O. † | Bishop of Faro {Algarve}, Portugal | Bishop Emeritus |
| 64.3 | Elevated to Cardinal | Louis-Joseph de Montmorency-Laval † | Cardinal, Bishop Emeritus of Metz, France |
| 48.3 | Appointed | José Pérez Calama † | Bishop of Quito, Ecuador | Bishop Emeritus |
| 50.4 | Appointed | Giacinto Ignazio Pellegrini, O.P. † | Bishop of Krk (Veglia), Croatia |
| 54.9 | Elevated to Cardinal | Antonio Sentmanat y Castellá † | Cardinal, Patriarch of West Indies, Spain |
| 66.9 | Appointed | Felipe José de Tres-Palacios y Verdeja † | Bishop of San Cristobal de la Habana, Cuba |
| 58.5 | Appointed | Francesco Vanni, C.R. † | Bishop of Cefalù, Italy |
| 1 Apr | 61.7 | Resigned | Alexandre da Silva Pedrosa Guimarães † | Bishop of Macau, China | Bishop Emeritus |
| 3 Apr | 50.0 | Died | Pierre de Séguiran † | Bishop of Nevers, France |
| 7 Apr | | Died | Hyacinthus Archiopoli † | Titular Bishop of Callipolis |
| 8 Apr | 23.5 | Ordained Priest | Franz Arnold Melchers † | Priest of Münster, Germany | Auxiliary Bishop |
| 11 Apr | 24.1 | Ordained Priest | Pietro Consiglio † | Priest | Archbishop of Brindisi, Italy |
| 26.6 | Ordained Priest | Nicolaus Ferrarelli † | Priest | Titular Archbishop of Myra |
| 63.8 | Died | Baldassare de Moncada † | Bishop of San Marco (Argentano), Italy |
| 12 Apr | | Born | Bartol Bozanić † | Verbenico | Bishop of Krk (Veglia), Croatia |
| Born | St. Antonio Maria Gianelli † | Carro | Bishop of Bobbio, Italy |
| 63.2 | Ordained Bishop | Mariano Zaralli, O.F.M. † | Titular Bishop of the Titular See | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 13 Apr | 50.5 | Ordained Bishop | Giacinto Ignazio Pellegrini, O.P. † | Bishop of Krk (Veglia), Croatia |
| 19 Apr | 68.3 | Died | Luis da Anunciação Azevedo, O.P. † | Bishop Emeritus of Angola e Congo, Angola |
| 36.4 | Ordained Bishop | Giovanni Martino Bernardoni Baccolo † | Bishop of Kotor (Cattaro), Montenegro | Titular Bishop of Famagusta |
| 51.3 | Ordained Bishop | Martinus Cordella † | Bishop of Bagnoregio (Bagnorea), Italy |
| 42.3 | Ordained Bishop | Henri-Charles du Lau d’Allemans † | Bishop of Grenoble, France |
| 62.0 | Ordained Bishop | Francisco Gabriel de Olivares y Benito † | Bishop of Chiapas (Ciudad Real de Chiapas), México | Bishop of Durango, México |
| 26 Apr | 50.3 | Ordained Bishop | Francisco Gomes de Avelar, C.O. † | Bishop of Faro {Algarve}, Portugal |
| 57.9 | Installed | Franz Philipp von Inzaghi † | Bishop of Gradisca (d’Isonzo), Italy | Bishop of Gorizia e Gradisca, Italy |
| 1 May | 43.2 | Ordained Bishop | Angel Velarde y Bustamante † | Bishop of Popayán, Colombia |
| 3 May | 44.8 | Ordained Bishop | Giovanni Devoti † | Bishop of Anagni, Italy | Bishop Emeritus |
| 4 May | 69.4 | Died | Diego Martín Rodríguez, O.F.M. † | Bishop of Coria, Spain |
| Born | Carlo Romanò † | Cantù | Bishop of Como, Italy |
| 10 May | 53.3 | Ordained Bishop | José Andrés de Achurra y Núñez del Arco † | Bishop of Trujillo, Peru |
| 15 May | 52.2 | Ordained Bishop | Adalbert (Wilhelm Adolph Heinrich) von Harstall, O.S.B. † | Bishop of Fulda, Germany |
| 17 May | 64.0 | Died | Marco Aurelio Balbis Bertone † | Bishop of Novara, Italy |
| 20 May | | Born | John Briggs † | Barton Moss | Bishop Emeritus of Beverley, England, Great Britain |
| 21 May | | Born | Juan Manuel de Irrizarri y Peralta † | Habana, Cuba | Auxiliary Bishop of México, Federal District |
| 27 May | | Born | Lorenzo Simonetti † | Rome, Italy | Cardinal, Cardinal-Priest of San Lorenzo in Panisperna |
| 2 Jun | | Born | Letterio Turchi † | Apiro | Bishop of Città di Castello, Italy |
| 6 Jun | 26.3 | Ordained Priest | Pietro Antonio Cirio † | Priest | Bishop of Susa, Italy |
| 24.1 | Ordained Priest | Denis-Antoine-Luc de Frayssinous † | Priest | Titular Bishop of Hermopolis Maior |
| 33.3 | Ordained Priest | Lorenzo Litta † | Priest | Cardinal, Official of the Roman Curia - Other |
| 24.4 | Ordained Priest | Vincenzo Rocca † | Priest | Bishop of Larino, Italy |
| 22.1 | Ordained Deacon | Camillo Giovanni Rossi † | Deacon | Bishop Emeritus of San Severo, Italy |
| 28.6 | Ordained Priest | Jacques-Louis-David de Séguin des Hons † | Priest | Bishop of Troyes, France |
| 23.1 | Ordained Priest | Pietro Giovanni Zanardi † | Priest | Bishop of Guastalla, Italy |
| 7 Jun | 54.0 | Died | François-Joseph-Emmanuel de Crussol d’Uzès d’Amboise † | Bishop of La Rochelle, France |
| 14 Jun | 44.2 | Selected | François de Bovet † | Bishop of Sisteron, France | Archbishop Emeritus of Toulouse, France |
| 28 Jun | 60.9 | Ordained Bishop | Fernando del Portillo y Torres, O.P. † | Archbishop of Santo Domingo, Dominican Republic | Archbishop of Santafé en Nueva Granada, Colombia |