| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Died | Gregorio Francisco de Campos † | Bishop of La Paz, Bolivia |
| 21.3 | Ordained Priest | Bartolomeo Alberto (Mauro) Cappellari, O.S.B. † | Priest of Order of Saint Benedict | Pope (Roma {Rome}, Italy) |
| 21.9 | Ordained Priest | Francisco Ramón Valentín de Casaus y Torres, O.P. † | Priest of Order of Friars Preachers | Archbishop of Guatemala |
| 36.0 | Appointed | Alexandre-Henri de Chauvigny de Blot † | Bishop of Lombez, France |
| 38.0 | Appointed | Henri de Chambre d'Urgons † | Auxiliary Bishop of Metz, France |
| Died | Pellegrino Consalvi † | Bishop of Fano, Italy |
| 54.6 | Died | Vitale Giuseppe de' Buoi † | Bishop of Faenza, Italy |
| Succeeded | Daniel Delany † | Bishop of Kildare and Leighlin, Ireland |
| 42.4 | Appointed | Giulio Maria della Somaglia † | Secretary of the Congregation of Bishops and Regulars | Cardinal, Archivist of the Vatican Secret Archives |
| 24.0 | Ordained Priest | Joseph Fesch † | Priest | Cardinal, Archbishop of Lyon (-Vienne), France |
| Died | James Keefe † | Bishop of Kildare and Leighlin, Ireland |
| 84.1 | Died | Tommaso Mazza † | Bishop of Castellammare di Stabia, Italy |
| Born | Charles McNally † | Ardaghy | Bishop of Clogher, Ireland |
| 30.3 | Appointed | José Maria de Melo † | Bishop of Faro {Algarve}, Portugal | Bishop Emeritus |
| 39.0 | Appointed | Gabriel-Melchior de Messey † | Bishop of Valence, France |
| 73.6 | Died | Domenico Monti † | Archbishop of Urbino, Italy |
| 65.0 | Died | Filiberto Pascali (Pascale) † | Bishop of Telese o Cerreto Sannita, Italy |
| 66.0 | Died | Pierre Peineau du Verdier, C.O. † | Bishop of Acci and Mariana, France |
| Died | Philip Phillips † | Archbishop of Tuam, Ireland |
| 38.4 | Appointed | Ján Révay † | Bishop of Spiš, Slovakia |
| Born | Agabio Riecji † | Kensciara | Archbishop of Beirut and Jbeil {Bairut e Gibail} (Melkite), Lebanon |
| 52.6 | Resigned | Léon-François-Ferdinand de Salignac de La Mothe-Fénelon † | Bishop of Lombez, France | Bishop Emeritus |
| 17.9 | Professed | Joachin (Gioacchino Domenico) Salvetti, O.F.M. † | Member of Order of Friars Minor | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 1 Jan | | Born | Daniel Latussek † | Groß Wartenberg | Auxiliary Bishop of Wrocław, Poland |
| 3 Jan | 59.8 | Appointed | Joseph-Marie Paget † | Bishop of Genève {Geneva}, Switzerland | Bishop Emeritus |
| 5 Jan | 39.3 | Succeeded | Michal Mateusz Stadnicki, O.S.B.M. † | Bishop of Foreign Diocese |
| 6 Jan | | Born | Jacques-Léonard Pérocheau, M.E.P. † | Les Sables-d'Olonne, France | Vicar Apostolic of Northwestern Szechwan {Se-Ciuen Settentrionale-Occidentale}, China |
| 14 Jan | 71.6 | Died | Antonio Casali † | Cardinal, Cardinal-Deacon of S. Maria ad Martyres |
| 21 Jan | | Born | Manuel Grijalvo y Mínguez † | Los Balbases, Spain | Bishop of Nueva Caceres, Philippines |
| 23 Jan | | Born | Raffaele Fornari † | Rome | Cardinal, Prefect of the Congregation for Studies |
| 29 Jan | 44.0 | Appointed | Ignazio-Gaetano Boncompagni-Ludovisi † | Cardinal-Deacon of S. Maria ad Martyres | Cardinal, Secretary Emeritus of the Secretariat of State |
| 33.5 | Installed | Romoaldo Braschi-Onesti † | Cardinal-Deacon of S. Nicola in Carcere | Cardinal, Archpriest of the Basilica di San Pietro in Vaticano {Saint Peter Basilica} |
| 57.4 | Elevated to Cardinal | Filippo Carandini † | Cardinal, Cardinal-Deacon of S. Eustachio |
| 46.0 | Confirmed | Johann Baptist Lachenbauer, O. Cr. † | Bishop of Brno, Czech Republic |
| Appointed | Guglielmo Stagno † | Auxiliary Bishop of Messina, Italy |
| Appointed | Guglielmo Stagno † | Titular Bishop of Theveste | Auxiliary Bishop of Messina, Italy |
| 6 Feb | 46.8 | Died | Jacques-Joseph-François de Vogüé † | Bishop of Dijon, France |
| 7 Feb | | Born | Romualdo Antônio de Seixas Barroso † | Cametá | Archbishop of São Salvador da Bahia, Brazil |
| 12 Feb | | Born | Joseph Norbert Provencher † | Nicolet | Bishop of Saint-Boniface, Manitoba, Canada |
| 13 Feb | | Appointed | Edward French † | Bishop of Elphin, Ireland |
| 15 Feb | 75.3 | Died | Anton Ignaz Reichsgraf von Fugger-Glött † | Bishop of Regensburg, Germany |
| 16 Feb | 28.0 | Ordained Priest | Aeneas Bernard MacEachern † | Priest of Québec, Québec, Canada | Bishop of Charlottetown, Prince Edward Island, Canada |
| 24.6 | Ordained Priest | Alexander MacDonell † | Priest | Bishop of Kingston, Ontario, Canada |
| 22 Feb | 46.1 | Ordained Bishop | Johann Baptist Lachenbauer, O. Cr. † | Bishop of Brno, Czech Republic |
| Born | Giuseppe Antonio Zacchia Rondinini † | Vezzano | Cardinal, Priest of the Roman Curia - Other |
| 25 Feb | 44.6 | Appointed | René des Monstiers de Mérinville † | Bishop of Dijon, France | Bishop Emeritus of Chambéry, France |
| 6 Mar | 57.5 | Died | Antonio María de los Reyes Almada, O.F.M. † | Bishop of Sonora, Sonora, México |
| 14 Mar | 65.8 | Died | Antonio Andrés López Arroyo, O.F.M. † | Bishop of Astorga, Spain |
| 17 Mar | | Born | Martino Caliendi † | Scavolino | Bishop of Monte Feltre, Italy |
| Born | Carlo Giuseppe Benedetto Mercy d'Argenteau † | Liegi | Apostolic Nuncio Emeritus to Monaco |
| 23 Mar | 23.5 | Ordained Priest | Francisco Alexandre Lobo, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Viseu, Portugal |
| 24 Mar | 23.1 | Ordained Priest | Karl Adalbert Freiherr von Beyer, O. Praem. † | Priest of Order of the Canons Regular of Premontre; Norbertines | Auxiliary Bishop of Köln {Cologne}, Germany |
| 3 Apr | 68.7 | Died | Tommaso Maria Ghilini † | Cardinal, Cardinal-Priest of S. Maria sopra Minerva |
| 34.8 | Appointed | Jacques-Benjamin Longer, M.E.P. † | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam | Vicar Apostolic |
| 34.8 | Appointed | Jacques-Benjamin Longer, M.E.P. † | Titular Bishop of Gortyna | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 61.2 | Appointed | Mariano Zaralli, O.F.M. † | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 61.2 | Appointed | Mariano Zaralli, O.F.M. † | Titular Bishop of the Titular See | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 4 Apr | 79.5 | Died | Francesco d'Elci † | Cardinal, Cardinal-Deacon of S. Angelo in Pescheria |
| Born | Alessandro Spada † | Rome | Cardinal, Priest of the Roman Curia - Other |
| 7 Apr | 41.4 | Ordained Priest | Franz Karl Joseph Fürst von Hohenlohe-Waldenburg-Schillingsfürst † | Priest of Köln {Cologne}, Germany | Bishop of Augsburg, Germany |
| 15 Apr | 42.3 | Ordained Bishop | Arnaud-Antoine Garnault, M.E.P. † | Titular Bishop of Metellopolis | Vicar Apostolic of Siam, Thailand |
| 20 Apr | | Born | Juraj Haulík Váralyai † | Trnave, Slovakia | Cardinal, Archbishop of Zagreb, Croatia |
| 47.5 | Appointed | Max Polykarp Reichsgraf von Törring-Jettenbach † | Bishop of Regensburg, Germany |
| 22 Apr | 63.9 | Installed | Franz de Paula Xaver Ludwig Jakob Fürst von Breuner † | Bishop of Chiemsee, Germany |
| 23 Apr | 62.4 | Appointed | Vincenzo Maria Altieri † | Cardinal-Deacon of S. Angelo in Pescheria | Cardinal, |
| 57.6 | Installed | Filippo Carandini † | Cardinal-Deacon of S. Maria in Portico | Cardinal, Cardinal-Deacon of S. Eustachio |
| 51.7 | Appointed | Lorenzo de Dominicis † | Bishop of Civita Castellana e Orte, Italy |
| 53.4 | Appointed | Domenico Mancinforte † | Bishop of Faenza, Italy |
| 44.8 | Confirmed | René des Monstiers de Mérinville † | Bishop of Dijon, France | Bishop Emeritus of Chambéry, France |
| 60.1 | Ordained Bishop | Joseph-Marie Paget † | Bishop of Genève {Geneva}, Switzerland | Bishop Emeritus |
| 52.0 | Appointed | Antonio Puñuela Alonso † | Bishop of Zamora, Spain |
| Born | Anastasius Johannes Sedlag † | Dittmerau | Bishop of Chelmno (Culma), Poland |
| 30.2 | Appointed | Antonio Gabriele Severoli † | Bishop of Fano, Italy | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 6 May | 41.5 | Ordained Bishop | Felipe Pelaez Caunedo † | Bishop of Lugo, Spain |
| 13 May | 38.4 | Ordained Bishop | Charles-César-Louis d'Agoult de Bonneval † | Bishop of Pamiers, France | Bishop Emeritus |
| Born | Antônio Ferreira Viçoso, C.M. † | Peniche, Portugal | Bishop of Mariana, Brazil |
| 44.9 | Ordained Bishop | René des Monstiers de Mérinville † | Bishop of Dijon, France | Bishop Emeritus of Chambéry, France |
| 30.2 | Ordained Bishop | Antonio Gabriele Severoli † | Bishop of Fano, Italy | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 22 May | 80.4 | Died | Gottfried Xaver von Laimbeckhoven, S.J. † | Bishop of Nanking [Nanjing], China |
| 25 May | | Born | Louis-Robert Paysant † | Crosville-sur-Douves | Bishop of Angers, France |
| 2 Jun | 25.0 | Ordained Priest | Giovanni Francesco Capelletti † | Priest | Bishop of Ascoli Piceno, Italy |
| 42.8 | Ordained Priest | Giulio Maria della Somaglia † | Priest | Cardinal, Archivist of the Vatican Secret Archives |
| 3 Jun | | Resigned | John Butler † | Bishop of Cork, Ireland | Bishop Emeritus |
| 4 Jun | 53.5 | Ordained Bishop | Giovanni Vincenzo Monforte † | Bishop of Tropea, Italy | Archbishop of Napoli {Naples}, Italy |
| 17 Jun | 25.6 | Ordained Priest | St. Ignacio Clemente Delgado Cebrián, O.P. † | Priest of Order of Friars Preachers | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 18 Jun | 43.4 | Appointed | Karl Theodor Freiherr von Dalberg † | Coadjutor Bishop of Worms, Germany | Bishop |
| Born | Luigi Landi-Vittorj † | Cori | Bishop of Assisi, Italy |
| 19 Jun | | Appointed | Gerard Teaghan † | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| Appointed | Gerard Teahan † | Bishop of Foreign Diocese |
| 30 Jun | | Born | Rémi Gaulin † | Quebec City | Bishop of Kingston, Ontario, Canada |
| Jul | | Ordained Bishop | Gerard Teahan † | Bishop of Foreign Diocese |
| 1 Jul | 63.5 | Died | François-Fiacre de Grave † | Bishop of Valence, France |
| 6 Jul | | Born | Giuseppe-Maria Amorelli † | Sambuca | Bishop of Siracusa, Italy |
| 7 Jul | 75.1 | Died | Pedro Cortez y Larraz † | Bishop Emeritus of Tortosa, Spain |
| 15 Jul | 52.2 | Ordained Bishop | Antonio Puñuela Alonso † | Bishop of Zamora, Spain |
| 21 Jul | 45.1 | Installed | René des Monstiers de Mérinville † | Bishop of Dijon, France | Bishop Emeritus of Chambéry, France |
| 26 Jul | | Born | Jean-Jacques Fayet † | Mende | Bishop of Orléans, France |
| 54.9 | Died | Eustache Federl † | Vicar Apostolic Emeritus of Malabar, India | Vicar Apostolic |
| 29 Jul | | Born | Leopold Graf Sedlnitzky Choltiz von Odrownocz † | Geppersdorf | Bishop Emeritus of Wrocław, Poland |
| 30 Jul | | Born | Costanzo-Michele Fea † | Voghera | Bishop of Alba (Pompea), Italy |
| 1 Aug | 90.8 | Died | St. Alfonso Maria de' Liguori † | Bishop Emeritus of Sant’Agata de’ Goti, Italy |
| 2 Sep | 70.3 | Died | Antonio Jorge y Galván † | Archbishop of Granada, Spain |
| 10 Sep | 56.2 | Appointed | Francisco Antonio Pablo Sieni Flannings, O.F.M. Cap. † | Auxiliary Bishop of San Cristobal de la Habana, Cuba | Auxiliary Bishop Emeritus of San Cristobal de la Habana, Cuba |
| 13 Sep | | Born | Cipriano Juárez Berzosa † | Villaherreros | Bishop of Calahorra y La Calzada, Spain |
| 22 Sep | | Born | Tommaso Pasquale Gizzi † | Ceccano | Cardinal, Secretary of the Secretariat of State |
| 23.9 | Ordained Priest | Wilhelm Arnold Günther, O. Praem. † | Priest of Order of the Canons Regular of Premontre; Norbertines | Auxiliary Bishop of Trier, Germany |
| 24.0 | Ordained Priest | Jan Jerzy Wilkxycki † | Priest of Chelmno (Culma), Poland | Auxiliary Bishop |
| 23 Sep | 67.7 | Died | Georges-Louis Phélypeaux d'Herbault † | Archbishop of Bourges, France |
| 23.5 | Ordained Priest | Petrus Pustet † | Priest of Order of St. Augustine | Bishop of Eichstätt, Germany |
| 28 Sep | 57.8 | Appointed | Manuel Abad Lasierra † | Bishop of Astorga, Spain | Bishop Emeritus |
| 23.1 | Ordained Priest | John Dubois, P.S.S. † | Priest of Society of Priests of St. Sulpice | Bishop of New York, New York, USA |
| 50.7 | Appointed | Kasimir Johann Baptist von Häffelin † | Cardinal, Titular Bishop of Chersonesus in Creta |
| 61.0 | Appointed | Vincenzo Ranuzzi † | Cardinal-Priest of S. Maria sopra Minerva | Cardinal, Bishop of Ancona e Numana, Italy |
| 47.9 | Confirmed | Max Polykarp Reichsgraf von Törring-Jettenbach † | Bishop of Regensburg, Germany |
| 3 Oct | | Born | Johann Franz Drepper † | Mellrich | Bishop of Paderborn, Germany |
| 6 Oct | | Born | Francesco Pichi † | Ancona | Bishop of Tivoli, Italy |
| 7 Oct | 23.0 | Ordained Priest | Francesco Biordi † | Priest | Titular Bishop of the Titular See |
| 68.3 | Died | Karl Johann Reichsgraf von Herberstein † | Bishop of Ljubljana, Slovenia |
| 35.1 | Appointed | Anne-Louis-Henri de La Fare † | Bishop of Nancy, France | Cardinal, Archbishop of Sens (-Auxerre), France |
| 9 Oct | | Born | Clément Villecourt † | Lyon | Cardinal, Bishop Emeritus of La Rochelle (-Saintes), France |
| 14 Oct | 43.6 | Appointed | François de Fontanges † | Archbishop of Bourges, France | Bishop of Autun, France |
| 17 Oct | 66.3 | Died | Franz Xaver Reichsfreiherr von Adelmann von Adelmannsfelden † | Auxiliary Bishop of Augsburg, Germany |
| 21 Oct | 23.0 | Ordained Priest | Szymon Michal Józef Arnold Giedroyc † | Priest | Bishop of Samogizia o Tels (Zmudz), Lithuania |
| 24 Oct | | Born | Claude-Marie-Paul Tharin † | Besançon | Bishop Emeritus of Strasbourg, France |
| 27 Oct | 55.8 | Appointed | Angel Mariano Moscoso Pérez y Oblitas † | Bishop of Córdoba (Tucumán), Argentina |
| 28 Oct | 48.0 | Ordained Bishop | Max Polykarp Reichsgraf von Törring-Jettenbach † | Bishop of Regensburg, Germany |
| 30 Oct | | Born | Louis-Jacques-Maurice de Bonald † | Millau | Cardinal, Archbishop of Lyon (-Vienne), France |
| 2 Nov | | Born | Jean-François Crozier † | Billom | Bishop of Rodez, France |
| 11 Nov | | Died | Anthony Blake † | Archbishop of Armagh, Ireland |
| 50.9 | Ordained Bishop | Kasimir Johann Baptist von Häffelin † | Cardinal, Titular Bishop of Chersonesus in Creta |
| Succeeded | Richard O'Reilly † | Archbishop of Armagh, Ireland |
| 12 Nov | 47.0 | Appointed | Joseph Christian Franz de Paula Prinz zu Hohenlohe-Waldenburg-Bartenstein † | Coadjutor Bishop of Wrocław, Poland | Bishop |
| Born | Pierre-Flavien Turgeon † | Québec | Archbishop of Québec, Québec, Canada |
| 23 Nov | 50.5 | Resigned | Alexandre da Sagrada Familia Ferreira da Silva, O.F.M. † | Bishop of Angola e Congo, Angola | Bishop of Angra, Portugal |
| Dec | 69.2 | Died | Baltasar Yusta Navarro † | Bishop of Córdoba, Spain |
| 5 Dec | 45.8 | Appointed | Michel Leopold Freiherr Brigido von Marenfels und Bresoviz † | Bishop of Ljubljana, Slovenia | Bishop of Spiš, Slovakia |
| 15 Dec | 54.0 | Appointed | Boetius Egan † | Archbishop of Tuam, Ireland |
| 59.2 | Died | Basilio Tomás Sancho Hernando (de Santas Justa y Rufina), Sch. P. † | Archbishop of Manila, Philippines |
| 17 Dec | 52.4 | Appointed | Luigi Amici † | Archbishop of Camerino, Italy |
| 54.7 | Appointed | Spiridione Berioli † | Archbishop of Urbino, Italy |
| 72.9 | Elevated to Cardinal | Raniero Finocchietti † | Cardinal, Cardinal-Deacon of S. Agata de’ Goti |
| 43.8 | Confirmed | François de Fontanges † | Archbishop of Bourges, France | Bishop of Autun, France |
| 35.3 | Confirmed | Anne-Louis-Henri de La Fare † | Bishop of Nancy, France | Cardinal, Archbishop of Sens (-Auxerre), France |
| 59.2 | Appointed | Basilio Tomás Sancho Hernando (de Santas Justa y Rufina), Sch. P. † | Archbishop of Granada, Spain | Archbishop of Manila, Philippines |
| 20 Dec | | Born | Giovanni Battista Ciofi † | Arezzo | Bishop of Chiusi-Pienza, Italy |
| 22 Dec | 25.3 | Ordained Priest | Jan Chrzciciel Louis Masclet, O.M. † | Priest of Minimi | Auxiliary Bishop of Minsk, Belarus |
| 22.7 | Ordained Priest | Ignatius Vincentius Matthy † | Priest of Warmia, Poland | Bishop of Chelmno (Culma), Poland |
| 23.2 | Ordained Priest | Joaquim da Souza Saraiva, C.M. † | Priest of Congregation of the Mission | Vicar Apostolic of Northern Chi-Li {Ce-Li Settentrionale} o Pe-Kin, China |
| 27 Dec | | Born | Guy Ignatius Chabrat, P.S.S. † | Vigean, France | Coadjutor Bishop Emeritus of Bardstown, Kentucky, USA |
| 23.1 | Ordained Priest | Karl Klemens Reichsfreiherr von Gruben † | Priest of Köln {Cologne}, Germany | Bishop of Hildesheim, Germany |