| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Appointed | Bernardo Bernardino Beltrão † | Bishop of Pinhel, Portugal |
| 41.3 | Appointed | Cesare Brancadoro † | Secretary of the Congregation for Propagation of the Faith | Cardinal, Archbishop of Fermo, Italy |
| Died | Bonaventura Calcagnini † | Bishop of Penne-Atri, Italy |
| Appointed | Rocco Coiro † | Bishop of Crotone (Cotrone), Italy |
| 61.0 | Appointed | Bernardo della Torre † | Bishop of Lettere-Gragnano, Italy | Bishop of Castellammare di Stabia, Italy |
| 60.0 | Appointed | Pietro De Felice † | Bishop of Sessa Aurunca, Italy |
| 29.6 | Ordained Priest | Pierre-Michel-Marie Double † | Priest | Bishop of Tarbes, France |
| Appointed | Pietro Fidele Grisolia † | Bishop of Santa Severina, Italy |
| 52.0 | Appointed | Orazio Magliola † | Bishop of Acerra, Italy |
| 16.2 | Professed | Franz Laurenz Mauermann, O.S.B. † | Member of Order of Saint Benedict | Vicar Apostolic of Foreign Diocese |
| 50.6 | Appointed | José António Pinto de Mendonça Arrais † | Bishop of Guarda, Portugal |
| 22.0 | Ordained Priest | Ramón Ignacio Méndez † | Priest | Archbishop of Caracas, Santiago de Venezuela |
| 22.3 | Ordained Priest | Giuseppe Gasparo Mezzofanti † | Priest | Cardinal, Cardinal-Priest of S. Onofrio |
| Appointed | Riccardo Capece Minutolo † | Bishop of Gaeta, Italy |
| 27.4 | Ordained Priest | Johann Theodor van der Noot † | Priest of Trier, Germany | Vicar Apostolic Emeritus of Luxembourg |
| Born | James Sharples † | | Coadjutor Vicar Apostolic of Lancashire District, England, Great Britain |
| 84.3 | Died | Michele Tafuri † | Bishop of Cava, Italy |
| 18 Jan | | Born | Juan Alfonso Albuquerque Berión † | Aguilas | Bishop of Córdoba, Spain |
| 21 Jan | | Born | Auguste Allou (Alloux) † | Provins | Bishop of Meaux, France |
| 8 Feb | 80.4 | Died | Alfonso Solís Grajera, O.S. † | Bishop of Badajoz, Spain |
| 11 Feb | | Born | Antonio Herrán y Zaldúa † | Honda | Archbishop of Santafé en Nueva Granada, Colombia |
| 41.0 | Appointed | Lorenzo Litta † | Apostolic Nuncio to Russian Federation | Cardinal, Official of the Roman Curia - Other |
| 12 Feb | | Born | John Timon, C.M. † | Conewago, PA | Bishop of Buffalo, New York, USA |
| 15 Feb | | Born | Etienne Jean François Le Herpeur † | Bayeux, France | Bishop of Martinique (Fort-de-France e Saint Pierre), Martinique, Antilles |
| 19 Feb | 76.2 | Died | Jerónimo Rogado de Carvalhal e Silva † | Bishop of Guarda, Portugal |
| 26 Feb | 75.9 | Died | Damian August Philipp Karl Reichsgraf von Limburg-Styrum † | Bishop of Speyer, Germany |
| 1 Mar | 73.8 | Died | Franz de Paula Xaver Ludwig Jakob Fürst von Breuner † | Bishop of Chiemsee, Germany |
| 10 Mar | 65.4 | Appointed | Carlo Luigi Buronzo del Signore † | Apostolic Administrator of Torino {Turin}, Italy | Archbishop |
| 15 Mar | 65.5 | Resigned | Ignazio Busca † | Secretary of the Secretariat of State | Cardinal, Chamberlain (Camerlengo) of the College of Cardinals |
| 19 Mar | | Born | Jean-Baptiste Boucho, M.E.P. † | Athos-Aspis, France | Vicar Apostolic of Malacca-Singapore |
| 23 Mar | 71.1 | Died | Francisco Cuadrillero Mota † | Bishop of Mondoñedo, Spain |
| Born | Manoel de Monte Rodrigues de Araújo † | Recife | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 1 Apr | 25.1 | Ordained Priest | Thomas Penswick † | Priest | Vicar Apostolic of Northern District, England, Great Britain |
| 42.6 | Appointed | Sigmund Christoph Graf von Waldburg-Zeil-Trauchburg † | Bishop of Chiemsee, Germany | Bishop Emeritus |
| 3 Apr | 68.8 | Died | Juan Francisco Armada Araujo † | Bishop of Huesca, Spain |
| 7 Apr | 42.6 | Ordained Bishop | Sigmund Christoph Graf von Waldburg-Zeil-Trauchburg † | Bishop of Chiemsee, Germany | Bishop Emeritus |
| 15 Apr | 23.1 | Ordained Priest | Johann Wilhelm Bausch † | Priest of Trier, Germany | Bishop of Limburg, Germany |
| 23.7 | Ordained Priest | Johann Georg Bossi † | Priest of Chur, Switzerland | Bishop of Chur-Sankt Gallen, Switzerland |
| 22 Apr | 58.1 | Appointed | Philipp Franz Wilderich Nepomuk Graf von Walderdorf † | Bishop of Speyer, Germany |
| 8 May | | Born | Giacomo Luigi Brignole † | Genoa | Cardinal, Official of the Roman Curia - Other |
| 14 May | 59.0 | Resigned | Louis Charrier de La Roche † | Bishop of Foreign Diocese | Bishop of Versailles, France |
| 17 May | 68.2 | Died | Juan Antonio Gallego y Orbigo, O.F.M. † | Archbishop of Manila, Philippines |
| 10 Jun | 23.1 | Ordained Priest | Johann Baptist Judas Thaddeus von Keller † | Priest of Rottenburg, Germany | Bishop |
| 13 Jun | | Born | Antoni Fijalkowski † | Lepe | Archbishop of Mohilev, Belarus |
| 16 Jun | 29.3 | Ordained Priest | Godehard Joseph Osthaus † | Priest of Hildesheim, Germany | Bishop |
| 24 Jun | 69.8 | Died | Eustaquio Azara, O.S.B. † | Bishop of Barcelona, Spain |
| Born | John Joseph Hughes † | Annaloghan, Ireland | Archbishop of New York, New York, USA |
| 26 Jun | | Born | Charles-Nicolas-Pierre Didiot † | Esnes-en-Argonne | Bishop of Bayeux (-Lisieux), France |
| 49.7 | Died | Michal Mateusz Stadnicki, O.S.B.M. † | Bishop of Foreign Diocese |
| 29 Jun | | Born | Ireneus Frederic Baraga † | Mala Vas, Austria | Bishop of Sault Sainte Marie-Marquette, Michigan, USA |
| 3 Jul | 46.9 | Appointed | Pedro Inocencio Bejarano † | Bishop of Buenos Aires, Argentina | Bishop of Sigüenza, Spain |
| 4 Jul | | Died | Gerard Teaghan † | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| Died | Gerard Teahan † | Bishop of Foreign Diocese |
| 15 Jul | | Born | Bénigne-Urbain-Jean-Marie du Trousset d'Héricourt † | Questembert | Bishop of Autun, France |
| 23 Jul | 63.4 | Appointed | Francisco Antonio Cebrián Valdá † | Bishop of Orihuela, Spain | Cardinal, Patriarch of West Indies, Antilles |
| 24 Jul | 65.8 | Appointed | Carlo Luigi Buronzo del Signore † | Archbishop of Torino {Turin}, Italy |
| 68.6 | Appointed | Francisco Javier Cabrera Velasco † | Bishop of Avila, Spain |
| 64.7 | Appointed | Simón Casaviella López † | Bishop of Tudela, Spain |
| 51.8 | Appointed | Remigio de La Santa y Ortega † | Bishop of La Paz, Bolivia | Bishop of Lérida, Spain |
| 52.4 | Appointed | Pedro Agustín Estévez y Ugarte † | Bishop of Yucatán (Mérida), Yucatán, México |
| 30.8 | Appointed | Leopold Maximilian Graf von Firmian (Frimian) † | Auxiliary Bishop of Passau, Germany | Archbishop of Wien {Vienna}, Austria |
| 30.8 | Appointed | Leopold Maximilian Graf von Firmian (Frimian) † | Titular Bishop of Tiberias | Archbishop of Wien {Vienna}, Austria |
| 45.0 | Appointed | Juan García Benito † | Bishop of Tui, Spain | Archbishop Emeritus of Santiago de Compostela, Spain |
| Appointed | Manuel Joaquín González de Acuña y Saenz † | Bishop of Panamá |
| 50.6 | Appointed | José Antonio de la Huerta Caso † | Bishop of León en Nicaragua |
| 43.7 | Appointed | Francisco Antonio La Dueña Cisneros † | Bishop of Urgell, Spain | Bishop of Segorbe, Spain |
| 74.8 | Installed | Francisco Antonio de Lorenzana y Butrón † | Cardinal-Priest of Ss. XII Apostoli | Cardinal, Archbishop Emeritus of Toledo, Spain |
| 64.6 | Appointed | Vittorio Filippo Melano, O.P. † | Archbishop (Personal Title) of Novara, Italy | Bishop |
| 65.1 | Appointed | Klemens August Maria Freiherr von Merle † | Auxiliary Bishop of Köln {Cologne}, Germany |
| 65.1 | Appointed | Klemens August Maria Freiherr von Merle † | Titular Bishop of Bethsaida | Auxiliary Bishop of Köln {Cologne}, Germany |
| 52.9 | Appointed | Manuel Cayetano Muñoz Benavente † | Auxiliary Bishop of Sevilla {Seville}, Spain | Auxiliary Bishop Emeritus |
| 52.9 | Appointed | Manuel Cayetano Muñoz Benavente † | Titular Bishop of Lycopolis | Auxiliary Bishop Emeritus of Sevilla {Seville}, Spain |
| 71.5 | Appointed | José Sáenz Santamaría † | Bishop of Segovia, Spain |
| 53.7 | Appointed | Cypriano de São José, O.F.M. † | Bishop of Mariana, Brazil |
| 50.1 | Appointed | Pablo Sitjar Ruata † | Auxiliary Bishop of Barcelona, Spain | Bishop |
| 50.1 | Appointed | Pablo Sitjar Ruata † | Titular Bishop of Geras | Bishop of Barcelona, Spain |
| 53.2 | Appointed | Juan Antonio Tamayo, O.S. † | Titular Bishop of Botrys |
| 34.3 | Appointed | Emanuel Maria Graf Thun † | Auxiliary Bishop of Trento, Italy | Bishop |
| 34.3 | Appointed | Emanuel Maria Graf Thun † | Titular Bishop of Iasus | Bishop of Trento, Italy |
| 49.3 | Confirmed | Leopold Leonhard Reichsgraf von Thun † | Bishop of Passau, Germany |
| 22 Aug | | Born | Augustin Magloire Alexandre Blanchet † | St-Pierre, Canada | Bishop Emeritus of Nesqually, Washington, USA |
| 27 Aug | 40.7 | Ordained Priest | Francesco Cesarei Leoni † | Priest | Cardinal, Bishop of Jesi, Italy |
| 77.2 | Died | José Gregorio Alonso de Ortigosa † | Bishop Emeritus of Antequera, Oaxaca, México |
| 49.4 | Ordained Bishop | Leopold Leonhard Reichsgraf von Thun † | Bishop of Passau, Germany |
| 30 Aug | | Born | José López Crespo † | San Pedro de Cornaedo | Bishop of Santander, Spain |
| Sep | 34.4 | Ordained Bishop | Emanuel Maria Graf Thun † | Titular Bishop of Iasus | Bishop of Trento, Italy |
| 1 Sep | 54.1 | Succeeded | Pierre Denaut † | Bishop of Québec, Québec, Canada |
| 58.5 | Resigned | Jean-François Hubert † | Bishop of Québec, Québec, Canada | Bishop Emeritus |
| 5 Sep | 75.6 | Died | Krysztof Hilary Szembek † | Bishop of Płock, Poland |
| 6 Sep | | Born | Ramón Garcia Antón, O.S.H. † | Relleu | Bishop of Tui, Spain |
| 8 Sep | 22.7 | Ordained Priest | Manoel Joaquim Gonçalves de Andrade † | Priest | Bishop of São Paulo, Brazil |
| 65.2 | Ordained Bishop | Klemens August Maria Freiherr von Merle † | Titular Bishop of Bethsaida | Auxiliary Bishop of Köln {Cologne}, Germany |
| 10 Sep | 27.7 | Ordained Priest | Maximilian Joseph Gottfried Sommerau Beeckh † | Priest | Cardinal, Archbishop of Olomouc, Czech Republic |
| 19 Sep | 50.1 | Appointed | Alexander Cameron † | Coadjutor Vicar Apostolic of Lowland District, Scotland, Great Britain | Vicar Apostolic Emeritus |
| 50.1 | Appointed | Alexander Cameron † | Titular Bishop of Maximianopolis in Palaestina | Vicar Apostolic Emeritus of Lowland District, Scotland, Great Britain |
| 21 Sep | | Born | Johannes Boßmann † | Keppeln | Auxiliary Bishop of Münster, Germany |
| 22 Sep | 73.3 | Died | Juan Antonio de los Tueros † | Archbishop of Burgos, Spain |
| 23 Sep | 24.9 | Ordained Priest | Paul-Thérèse-David d'Astros † | Priest | Cardinal, Archbishop of Toulouse (-Narbonne), France |
| 22.9 | Ordained Priest | Marcin von Dundin Sulgustowski † | Priest of Kraków, Poland | Archbishop of Gniezno-Poznań, Poland |
| 22.7 | Ordained Priest | Pierre-Tobie Yenni † | Priest of Lausanne, Switzerland | Bishop of Lausanne et Genève, Switzerland |
| Oct | 63.6 | Ordained Bishop | Francisco Antonio Cebrián Valdá † | Bishop of Orihuela, Spain | Cardinal, Patriarch of West Indies, Antilles |
| 1 Oct | 24.4 | Ordained Priest | Hermann von Vicari † | Priest of Konstanz {Constance}, Germany | Archbishop of Freiburg im Breisgau, Germany |
| 6 Oct | | Born | Joseph Othmar von Rauscher † | Vienna | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 8 Oct | 23.6 | Ordained Priest | Georg Prünster † | Priest of Brixen {Bressanone}, Italy | Auxiliary Bishop |
| 11 Oct | 58.6 | Died | Gregorio Jose de Omaña y Sotomayor † | Bishop of Antequera, Oaxaca, México |
| 14 Oct | 65.8 | Appointed | Raimundo Melchor Magi Gómez, O. de M. † | Bishop of Guadix, Spain |
| 15 Oct | 71.7 | Ordained Bishop | José Sáenz Santamaría † | Bishop of Segovia, Spain |
| 17 Oct | 58.7 | Died | Jean-François Hubert † | Bishop Emeritus of Québec, Québec, Canada |
| 58.2 | Died | Santiago Pérez Arenillas † | Bishop of Gerona, Spain |
| 18 Oct | | Appointed | Giovanni Gaetano del Muscio † | Bishop of San Severo, Italy | Archbishop of Manfredonia, Italy |
| 19 Oct | | Born | André-Joseph Guitton † | Aix-en-Provence | Bishop of Poitiers, France |
| 22 Oct | 45.3 | Ordained Bishop | Juan García Benito † | Bishop of Tui, Spain | Archbishop Emeritus of Santiago de Compostela, Spain |
| 43.9 | Ordained Bishop | Francisco Antonio La Dueña Cisneros † | Bishop of Urgell, Spain | Bishop of Segorbe, Spain |
| 53.1 | Ordained Bishop | Manuel Cayetano Muñoz Benavente † | Titular Bishop of Lycopolis | Auxiliary Bishop Emeritus of Sevilla {Seville}, Spain |
| 26 Oct | 62.1 | Resigned | John Geddes † | Coadjutor Vicar Apostolic of Lowland District, Scotland, Great Britain | Coadjutor Vicar Apostolic Emeritus |
| Born | José Vicente Ramírez de Arellano † | Córdoba | Bishop of Córdoba (Tucumán), Argentina |
| 28 Oct | 50.3 | Ordained Bishop | Pablo Sitjar Ruata † | Titular Bishop of Geras | Bishop of Barcelona, Spain |
| 31 Oct | 59.9 | Appointed | Isidoro Leggio † | Bishop of Umbriatico (Umbriaticum), Italy |
| 3 Nov | 24.1 | Ordained Priest | Gustave-Maximilien-Juste de Croÿ-Solre † | Priest | Cardinal, Archbishop of Rouen, France |
| 5 Nov | 65.0 | Ordained Bishop | Simón Casaviella López † | Bishop of Tudela, Spain |
| 31.1 | Ordained Bishop | Leopold Maximilian Graf von Firmian (Frimian) † | Titular Bishop of Tiberias | Archbishop of Wien {Vienna}, Austria |
| 7 Nov | | Born | Florencio Llorente Montón † | Teruel | Bishop of Gerona, Spain |
| 25 Nov | 55.7 | Succeeded | William Gregory Sharrock, O.S.B. † | Vicar Apostolic of Western District, England, Great Britain |
| 75.9 | Died | Charles Walmesley, O.S.B. † | Vicar Apostolic of Western District, England, Great Britain |
| 27 Nov | | Born | José Xavier de Cerveira e Sousa † | Mogofores | Bishop of Viseu, Portugal |
| 28 Nov | | Born | Andreas Gollmayr † | Radmansdorf | Archbishop of Gorizia e Gradisca, Italy |
| 2 Dec | 47.2 | Appointed | Camillo Cataneo de' Marchesi di Monte Scaglioso † | Archbishop of Acerenza e Matera, Italy | Archbishop of Acerenza-Matera, Italy |
| 4 Dec | 21.9 | Professed | Carlos de São José e Souza, O.C.D. † | Member of Order of Discalced Carmelites | Bishop of São Luís do Maranhão, Brazil |
| 7 Dec | 25.7 | Ordained Priest | Carlo Emmanuelle Sardagna de Hohenstein † | Priest of Trento, Italy | Bishop Emeritus of Cremona, Italy |
| 11 Dec | | Born | Francesco Pentini † | Rome | Cardinal, Priest of the Roman Curia - Other |
| 52.4 | Appointed | Joaquín Sánchez Cutanda † | Bishop of Huesca, Spain |
| 14 Dec | | Born | Antonio Maria Cagiano de Azevedo † | Santopadre | Cardinal, Prefect Emeritus of the Congregation of the Council |
| 18 Dec | 63.8 | Appointed | Andrés Aguiar Caamaño † | Bishop of Mondoñedo, Spain |
| 76.9 | Appointed | Gabriel Alvarez Faria † | Bishop of Badajoz, Spain |
| Appointed | Ramón José Arce † | Archbishop of Burgos, Spain | Patriarch Emeritus of West Indies, Antilles |
| 47.4 | Confirmed | Pedro Inocencio Bejarano † | Bishop of Buenos Aires, Argentina | Bishop of Sigüenza, Spain |
| 32.5 | Appointed | José Casquete Prado, O.S. † | Titular Bishop of Cisamus |
| 66.0 | Appointed | Joaquín Company Soler, O.F.M. † | Archbishop of Zaragoza, Spain | Archbishop of Valencia, Spain |
| 58.7 | Appointed | Felipe Antonio Fernández Vallejo † | Archbishop of Santiago de Compostela, Spain |
| 53.0 | Appointed | Giovanni Filippo Ferrone † | Bishop of Muro Lucano, Italy |
| 60.0 | Confirmed | Isidoro Leggio † | Bishop of Umbriatico (Umbriaticum), Italy |
| 45.4 | Appointed | Emanuel von Schimonski-Schimoni † | Auxiliary Bishop of Wrocław, Poland | Bishop |
| 45.4 | Appointed | Emanuel von Schimonski-Schimoni † | Titular Bishop of Lerus | Bishop of Wrocław, Poland |
| 50.2 | Appointed | Antonio Vila Campos † | Bishop of Menorca, Spain | Bishop of Albarracin, Spain |
| 58.8 | Confirmed | Philipp Franz Wilderich Nepomuk Graf von Walderdorf † | Bishop of Speyer, Germany |
| 21 Dec | | Ordained Bishop | Rocco Coiro † | Bishop of Crotone (Cotrone), Italy |
| 61.0 | Ordained Bishop | Pietro De Felice † | Bishop of Sessa Aurunca, Italy |
| 53.0 | Ordained Bishop | Giovanni Filippo Ferrone † | Bishop of Muro Lucano, Italy |
| Ordained Bishop | Pietro Fidele Grisolia † | Bishop of Santa Severina, Italy |
| 60.0 | Ordained Bishop | Isidoro Leggio † | Bishop of Umbriatico (Umbriaticum), Italy |
| 53.0 | Ordained Bishop | Orazio Magliola † | Bishop of Acerra, Italy |
| 47.2 | Ordained Bishop | Camillo Cataneo de' Marchesi di Monte Scaglioso † | Archbishop of Acerenza e Matera, Italy | Archbishop of Acerenza-Matera, Italy |
| 24 Dec | 48.4 | Appointed | Dominique Lacombe † | Bishop of Foreign Diocese | Bishop of Angoulême, France |
| 25 Dec | | Born | Bernard Donald McDonald † | Saint Andrew's | Bishop of Charlottetown, Prince Edward Island, Canada |
| 31 Dec | 54.1 | Ordained Bishop | Cypriano de São José, O.F.M. † | Bishop of Mariana, Brazil |
| 25.0 | Ordained Priest | Aloisio San Vitale † | Priest | Bishop of Piacenza, Italy |