| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Appointed | Rocco Maria Barsanti † | Bishop of Pesaro, Italy |
| Appointed | Bonaventura Calcagnini † | Bishop of Penne-Atri, Italy |
| Appointed | Gaetano Capece † | Archbishop of Trani, Italy |
| Appointed | Denis Conway † | Bishop of Limerick, Ireland |
| 24.3 | Ordained Priest | Jean-Baptiste Dubois † | Priest | Bishop of Dijon, France |
| Born | William Fraser (Frazer) † | Craskie in Glencannish, Great Britain | Bishop of Arichat, Nova Scotia, Canada |
| 25.0 | Ordained Priest | Patrick Lambert, O.F.M. † | Priest of Order of Friars Minor | Vicar Apostolic Emeritus of Newfoundland, Canada |
| Died | Giuseppe Maria de Leone † | Bishop of Penne-Atri, Italy |
| 55.0 | Appointed | Andrea Antonio Silverio Minucci † | Archbishop of Fermo, Italy |
| Appointed | Hugh MacMullan † | Bishop of Down and Connor, Ireland |
| Born | Jean-François Van de Velde † | | Bishop of Gent {Ghent, Gand}, Belgium |
| 61.3 | Appointed | Francesco Saverio de Zelada † | Cardinal, Archivist of the Vatican Secret Archives |
| 1 Jan | 24.1 | Ordained Priest | Gregor Tarkovic (Tarkovits) † | Priest of Mukacheve (Ruthenian), Ukraine | Bishop of Prešov (Prjašev) (Byzantine), Slovakia |
| 7 Jan | | Born | Judas José Romo y Gamboa † | Cañizar | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 10 Jan | 43.4 | Ordained Bishop | Laurent-Michel Eon de Cély † | Bishop of Apt, France | Bishop Emeritus |
| 27 Jan | | Born | Lorenzo Parigini † | Col della Noce | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 8 Feb | 71.1 | Died | Andrés Pérez Bermúdez, O.F.M. † | Bishop of Jaca, Spain |
| 18 Feb | 30.0 | Ordained Priest | Georg Karl Ignaz Freiherr von Fechenbach zu Laudenbach † | Priest of Mainz, Germany | Bishop of Würzburg, Germany |
| 71.0 | Died | Adam Friedrich Reichsgraf von Seinsheim † | Bishop of Würzburg, Germany |
| 20 Feb | 48.7 | Resigned | Johann Nepomuk Augustin Reichsfreiherr von Hornstein zu Hohenstoffen † | Auxiliary Bishop of Konstanz {Constance}, Germany | Auxiliary Bishop Emeritus |
| 1 Mar | 46.5 | Appointed | Jacinto Carlos da Silveira † | Bishop of São Luís do Maranhão, Brazil | Bishop Emeritus |
| 48.4 | Appointed | Vicente do Espirito Santo, O.A.D. † | Bishop of São Tomé e Príncipe | Prelate of Goiás, Brazil |
| 72.3 | Appointed | Joaquín Herrera Bárcena, O.S.B. † | Bishop of Islas Canarias {Canary Islands}, Spain |
| 49.4 | Appointed | Francisco José Marán † | Bishop of Concepción, Chile | Bishop of Santiago de Chile |
| 57.2 | Appointed | Domingos da Encarnação Pontevel, O.P. † | Bishop of Mariana, Brazil |
| 40.4 | Appointed | Karl Godefried Ritter von Rosenthal † | Auxiliary Bishop of Olomouc, Czech Republic |
| 40.4 | Appointed | Karl Godefried Ritter von Rosenthal † | Titular Bishop of Capharnaum | Auxiliary Bishop of Olomouc, Czech Republic |
| 46.1 | Appointed | Joaquín Santiyán Valdivieso † | Archbishop of Tarragona, Spain |
| 53.2 | Appointed | Francisco de São Simão, O.F.M. † | Bishop of Santiago de Cabo Verde |
| 55.0 | Appointed | Felipe Antonio Solano Marín † | Bishop of Cuenca, Spain |
| 66.2 | Appointed | Fernando de Sousa e Silva † | Cardinal, Patriarch of Lisboa, Portugal |
| 59.2 | Appointed | Bernardo Velarde Velarde † | Archbishop of Zaragoza, Spain |
| 2 Mar | | Born | Diego Antonio Elizondo y Prado † | San Martin en la Concha | Bishop of Concepción, Chile |
| 49.8 | Died | Ignaz Franz Stanislaus Reichsgraf von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 4 Mar | | Born | João da Purificação Marques Perdigão, O.S.A. † | Vianna do Minho | Bishop of Olinda, Brazil |
| 11 Mar | 82.0 | Died | Louis-César-Constantin de Rohan-Guémené-Montbazon † | Cardinal, Bishop of Strasbourg, France |
| 44.5 | Succeeded | Louis-René-Edouard de Rohan-Guéménée † | Bishop of Strasbourg, France | Cardinal, Bishop Emeritus |
| 12 Mar | | Born | Giacinto Pippi † | Massa Marittima | Bishop of Chiusi-Pienza, Italy |
| 14 Mar | | Born | Vincenzo Annovazzi † | Civitavecchia | Bishop of Anagni, Italy |
| 18 Mar | 48.5 | Appointed | Franz Ludwig Reichsfreiherr von Erthal † | Bishop of Würzburg, Germany |
| 19 Mar | 22.3 | Ordained Priest | Tommaso Arezzo † | Priest | Cardinal, Official of the Roman Curia - Other |
| 24.6 | Ordained Priest | Sigmund Christoph Graf von Waldburg-Zeil-Trauchburg † | Priest of Salzburg, Austria | Bishop Emeritus of Chiemsee, Germany |
| 20 Mar | | Born | Simon William Gabriel Bruté de Rémur † | Rennes, France | Bishop of Vincennes, Indiana, USA |
| 22 Mar | 40.5 | Ordained Bishop | Karl Godefried Ritter von Rosenthal † | Titular Bishop of Capharnaum | Auxiliary Bishop of Olomouc, Czech Republic |
| 63.3 | Died | Franz Xaver Twrdy † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 23 Mar | 71.0 | Died | Antonio Gómez de la Torre y Jaraveitia † | Bishop of Jaén, Spain |
| 25 Mar | 42.2 | Ordained Bishop | Baltazar Jaime Martínez de Compañón † | Bishop of Trujillo, Peru | Archbishop of Santafé en Nueva Granada, Colombia |
| 2 Apr | | Born | Francisco de La Puente, O.P. † | Saldaña, Spain | Bishop of Segovia, Spain |
| 3 Apr | 38.7 | Ordained Priest | Wilhelm Joseph Leopold Willibald Reichsfreiherr von Baden † | Priest of Konstanz {Constance}, Germany | Auxiliary Bishop |
| 12 Apr | 48.6 | Appointed | Franz Ludwig Reichsfreiherr von Erthal † | Bishop of Bamberg, Germany | Bishop of Würzburg, Germany |
| 16 Apr | | Born | Patrick Kelly † | Kilkenny, Ireland | Bishop of Waterford and Lismore, Ireland |
| 17 Apr | | Born | Anzelm Wojciech Brodziszewski † | Murowana Goślina | Auxiliary Bishop of Gniezno-Poznań, Poland |
| 18 Apr | 57.3 | Ordained Bishop | Domingos da Encarnação Pontevel, O.P. † | Bishop of Mariana, Brazil |
| 53.9 | Ordained Bishop | Juan Antonio de Jesús Sacedón Sánchez, O.F.M. † | Bishop of Linares o Nueva León, Nuevo León, México |
| 53.3 | Ordained Bishop | Francisco de São Simão, O.F.M. † | Bishop of Santiago de Cabo Verde |
| 23 Apr | 81.0 | Died | Diego Antonio de Parada † | Archbishop of Lima, Peru |
| 25 Apr | 72.5 | Ordained Bishop | Joaquín Herrera Bárcena, O.S.B. † | Bishop of Islas Canarias {Canary Islands}, Spain |
| May | 48.6 | Ordained Priest | Franz Ludwig Reichsfreiherr von Erthal † | Priest of Würzburg, Germany | Bishop |
| 2 May | 44.3 | Ordained Bishop | Manuel Obellar, O.P. † | Titular Bishop of Ruspae | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 9 May | 52.4 | Died | John MacDonald † | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 21 May | 58.8 | Died | Johann Theodor von Franken-Siersdorf † | Vicar Apostolic of Upper and Lower Saxony (Hanover), Germany |
| 23 May | 56.0 | Installed | Antonio Caballero y Góngora † | Archbishop of Santafé en Nueva Granada, Colombia | Bishop of Córdoba, Spain |
| 26 May | 60.7 | Appointed | Joseph Philipp Franz Reichsgraf von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 28 May | 22.9 | Ordained Priest | Joseph Chrysostomus Pauer † | Priest of Clerics Regular of St. Paul | Bishop of Sankt Pölten, Austria |
| 29 May | 25.4 | Ordained Priest | Columbano Giovanni Battista Carlo Gaspare Chiaverotti, O.S.B. † | Priest of Order of Saint Benedict | Archbishop of Torino {Turin}, Italy |
| 30 May | 54.8 | Ordained Bishop | Cayetano Adsor Paredes † | Titular Archbishop of Selymbria | Patriarch of West Indies, Antilles |
| 66.5 | Ordained Bishop | Fernando de Sousa e Silva † | Cardinal, Patriarch of Lisboa, Portugal |
| 3 Jun | | Born | Johann Stanislaus Kutowski † | Wentfin | Auxiliary Bishop of Chelmno (Culma), Poland |
| 19 Jun | | Born | Joseph Karl von Schuberth † | Neisse | Auxiliary Bishop of Wrocław, Poland |
| 20 Jun | 46.8 | Ordained Bishop | Jacinto Carlos da Silveira † | Bishop of São Luís do Maranhão, Brazil | Bishop Emeritus |
| 26 Jun | 66.6 | Died | Juan Manuel Argüelles † | Bishop of Palencia, Spain |
| 30 Jun | 76.3 | Died | José Francisco Losada Quiroga † | Bishop of Mondoñedo, Spain |
| Jul | 75.2 | Died | Claudio Sanz Torres y Ruiz de Castañedo † | Bishop of Almería, Spain |
| 12 Jul | 39.0 | Appointed | Wilhelm Joseph Leopold Willibald Reichsfreiherr von Baden † | Auxiliary Bishop of Konstanz {Constance}, Germany |
| 39.0 | Appointed | Wilhelm Joseph Leopold Willibald Reichsfreiherr von Baden † | Titular Bishop of Milevum | Auxiliary Bishop of Konstanz {Constance}, Germany |
| 55.5 | Appointed | Luis Tomás Esteban de Piña y Mazo, O.S.B. † | Bishop of Yucatán (Mérida), Yucatán, México |
| 48.8 | Confirmed | Franz Ludwig Reichsfreiherr von Erthal † | Bishop of Würzburg, Germany |
| 48.8 | Confirmed | Franz Ludwig Reichsfreiherr von Erthal † | Bishop of Bamberg, Germany | Bishop of Würzburg, Germany |
| 55.1 | Appointed | Carlo Giuseppe Filippa della Martiniana † | Cardinal, Bishop of Vercelli, Italy |
| 44.3 | Elevated to Cardinal | Ferenc Herzan von Harras † | Cardinal, Bishop of Szombathely, Hungary |
| 35.4 | Elevated to Cardinal | Alessandro Mattei † | In Pectore | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 48.4 | Appointed | Johann Nepomuk August Reichfreiherr Ungelter von Deisenhausen † | Auxiliary Bishop of Augsburg, Germany |
| 48.4 | Appointed | Johann Nepomuk August Reichfreiherr Ungelter von Deisenhausen † | Titular Bishop of Pella | Auxiliary Bishop of Augsburg, Germany |
| 55.3 | Appointed | Luis Velasco, O.F.M. † | Bishop of Paraguay |
| 14 Jul | | Born | Buenaventura Cano Torrente, O. de M. † | La Ñora, Spain | Titular Bishop of Magydus |
| 15 Jul | | Born | Nicolas-Augustin de la Croix d'Azolette † | Proprières | Archbishop Emeritus of Auch, France |
| 17 Jul | 68.4 | Appointed | Johann Mathäus Schweiberer † | Titular Bishop of Antipatris | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 24 Jul | 66.7 | Died | Adam Ernst Bernclau von Schönreith † | Auxiliary Bishop of Regensburg, Germany |
| 27 Jul | 68.4 | Appointed | Johann Mathäus Schweiberer † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 28 Jul | | Born | Giuseppe II Maria Traversi di Pereta † | Pitigliano | Bishop of Massa Marittima, Italy |
| 31 Jul | | Born | Ignacio Díaz Caneja † | Oseja de Sajambre | Bishop of Oviedo, Spain |
| Aug | | Appointed | Felice Paoli † | Bishop of Fossombrone, Italy | Bishop of Recanati-Loreto, Italy |
| 9 Aug | 75.5 | Died | Antônio de São José Moura Marinho, O.S.A. † | Archbishop of São Salvador da Bahia, Brazil |
| 10 Aug | 23.7 | Ordained Priest | Agostino Albergotti † | Priest | Bishop of Arezzo, Italy |
| 15 Aug | 68.5 | Ordained Bishop | Johann Mathäus Schweiberer † | Titular Bishop of Antipatris | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 24 Aug | 43.0 | Ordained Bishop | Cayetano Francos y Monroy † | Archbishop of Guatemala |
| 29 Aug | 76.5 | Died | Miguel da Anunciação † | Bishop of Coimbra, Portugal |
| 44.4 | Succeeded | Francisco de Lemos de Faria Pereira Coutinho † | Bishop of Coimbra, Portugal |
| 48.5 | Ordained Bishop | Johann Nepomuk August Reichfreiherr Ungelter von Deisenhausen † | Titular Bishop of Pella | Auxiliary Bishop of Augsburg, Germany |
| 2 Sep | | Born | Antolín García Lozano † | Atienza | Bishop of Salamanca, Spain |
| 14 Sep | 73.7 | Died | Miguel de Bulhões e Souza, O.P. † | Bishop of Leiria, Portugal |
| 18 Sep | 26.0 | Ordained Priest | Louis Joseph d'Humières † | Priest | Archbishop of Avignon, France |
| 23.9 | Ordained Priest | Carlo Fioravanti † | Priest | Bishop of Rieti, Italy |
| 22.9 | Ordained Priest | Simon Melchior de Petris † | Priest of Brixen {Bressanone}, Italy | Vicar Apostolic Emeritus of Seckau, Austria |
| Born | Tomás Roda Rodríguez † | Murtas | Bishop of Jaén, Spain |
| 19 Sep | 49.0 | Ordained Bishop | Franz Ludwig Reichsfreiherr von Erthal † | Bishop of Würzburg, Germany |
| 21 Sep | | Born | Castruccio Castracane degli Antelminelli † | Urbino | Cardinal, Bishop of Palestrina, Italy |
| 30 Sep | 44.1 | Appointed | John Geddes † | Coadjutor Vicar Apostolic of Lowland District, Scotland, Great Britain | Coadjutor Vicar Apostolic Emeritus |
| 44.1 | Appointed | John Geddes † | Titular Bishop of Marocco o Marruecos, Titular Sees | Coadjutor Vicar Apostolic Emeritus of Lowland District, Scotland, Great Britain |
| 43.7 | Appointed | Alexander MacDonald † | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 43.7 | Appointed | Alexander MacDonald † | Titular Bishop of Polemonium | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 37.5 | Appointed | William Gregory Sharrock, O.S.B. † | Coadjutor Vicar Apostolic of Western District, England, Great Britain | Vicar Apostolic |
| 37.5 | Appointed | William Gregory Sharrock, O.S.B. † | Titular Bishop of Telmissus | Vicar Apostolic of Western District, England, Great Britain |
| 10 Oct | | Born | Giovanni Soglia Ceroni † | Casola Valsenio | Cardinal, Secretary of the Secretariat of State |
| 16 Oct | | Born | Mariano Martínez Robledo y Robledo † | Granada | Bishop of Guadix, Spain |
| 31 Oct | 50.6 | Ordained Bishop | Juan Antonio Gallego y Orbigo, O.F.M. † | Bishop of Nueva Caceres, Philippines | Archbishop of Manila, Philippines |
| Nov | | Born | Maximos III Michel Mazloum † | Alep | Patriarch of Antiochia {Antioch} (Melkite), Syria |
| 11 Nov | 52.3 | Died | Miguel García San Esteban, O.P. † | Bishop of Nueva Segovia, Philippines |
| 19 Nov | 68.7 | Died | Franz Anton Xaver Reichsfreiherr von Scheben † | Auxiliary Bishop of Worms, Germany |
| 21 Nov | 50.1 | Ordained Bishop | Francisco José Marán † | Bishop of Concepción, Chile | Bishop of Santiago de Chile |
| 22 Nov | 17.9 | Professed | Manuel Nicolau de Almeida, O.C.D. † | Member of Order of Discalced Carmelites | Bishop of Angra, Portugal |
| 54.5 | Installed | Juan Antonio de Jesús Sacedón Sánchez, O.F.M. † | Bishop of Linares o Nueva León, Nuevo León, México |
| 28 Nov | 83.9 | Died | Manuel Pérez Minayo † | Bishop of Badajoz, Spain |
| 30 Nov | 49.1 | Ordained Bishop | Vicente do Espirito Santo, O.A.D. † | Bishop of São Tomé e Príncipe | Prelate of Goiás, Brazil |
| 11 Dec | 87.2 | Died | Alessandro Albani † | Cardinal, Archivist of the Vatican Secret Archives |
| 13 Dec | 58.2 | Appointed | Antônio Corrêa, O.S.A. † | Archbishop of São Salvador da Bahia, Brazil |
| 67.5 | Appointed | Pedro Cortez y Larraz † | Archbishop (Personal Title) of Tortosa, Spain | Bishop Emeritus |
| 55.3 | Appointed | Agustín Lezo Palomeque † | Bishop of Pamplona, Spain | Archbishop of Zaragoza, Spain |
| 60.0 | Appointed | Diego Martín Rodríguez, O.F.M. † | Bishop of Ceuta, Spain | Bishop of Coria, Spain |
| 45.0 | Appointed | Valentin Anton Reichsgraf von Schneid † | Auxiliary Bishop of Regensburg, Germany |
| 45.0 | Appointed | Valentin Anton Reichsgraf von Schneid † | Titular Bishop of Corycus | Auxiliary Bishop of Regensburg, Germany |
| 18 Dec | 23.3 | Ordained Priest | François-François Besson † | Priest | Bishop of Metz, France |
| 22.8 | Ordained Priest | Antonio Gabriele Severoli † | Priest | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 19 Dec | | Born | Giovanni Battista Parretti † | Castello di Segna | Archbishop of Pisa, Italy |
| 20 Dec | | Born | Tommaso Bernetti † | Fermo | Cardinal, Secretary Emeritus of the Secretariat of State |
| 26 Dec | 71.6 | Died | Johann Philipp Karl Anton Reichsfreiherr von Fechenbach zu Laudenbach † | Titular Bishop of the unknown of Titular See |
| 27 Dec | 54.6 | Died | Juan Antonio de Jesús Sacedón Sánchez, O.F.M. † | Bishop of Linares o Nueva León, Nuevo León, México |