| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 35.7 | Appointed | Martin du Bellay † | Bishop of Fréjus, France | Bishop Emeritus |
| 58.7 | Ordained Bishop | José Bolaños Calzado, O.F.M. † | Titular Archbishop of Nisibis |
| Appointed | Claude de Cabane † | Bishop of Gap, France |
| 68.0 | Died | Charles-François de Châteauneuf de Rochebonne † | Archbishop of Lyon, France |
| Appointed | Giacomo Costa † | Bishop of Ripatransone, Italy | Bishop of Belluno, Italy |
| 35.0 | Appointed | Teodor Kazimierz Czartoryski † | Bishop of Poznań, Poland |
| 32.6 | Appointed | Augustin-François-Annibal de Farcy de Cuillé † | Bishop of Quimper, France |
| 24.9 | Ordained Priest | Vigilius Augustin Maria Graf von Firmian † | Priest of Salzburg, Austria | Bishop Emeritus of Lavant, Slovenia |
| 60.0 | Appointed | Franciszek Antoni Kobielski † | Bishop of Luceoria o Łuck, Ukraine |
| Appointed | Diogo Marques Morato † | Bishop of Miranda, Portugal |
| Born | Hugh O'Reilly † | Killinkere Cavan | Bishop of Clogher, Ireland |
| 17.0 | Professed | Charles Walmesley, O.S.B. † | Member of Order of Saint Benedict | Vicar Apostolic of Western District, England, Great Britain |
| 17 Jan | | Born | Francisco Gomes de Avelar † | | Bishop of Faro {Algarve}, Portugal |
| 71.6 | Died | Giorgio Spínola † | Cardinal, Cardinal-Bishop of Palestrina |
| 18 Jan | 77.8 | Died | François-Hyacinthe de Ploeuc de Timeur † | Bishop of Quimper, France |
| 25 Jan | 44.6 | Ordained Bishop | Antônio de Nossa Senhora do Desterro Malheiro, O.S.B. † | Bishop of Angola e Congo, Angola | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 26 Jan | 55.2 | Appointed | Pedro González García † | Bishop of Tlaxcala, Tlaxcala, México | Bishop of Avila, Spain |
| 49.0 | Confirmed | Jakob Ernst Graf von Liechtenstein-Kastelkorn † | Bishop of Olomouc, Czech Republic | Archbishop of Salzburg, Austria |
| 27 Jan | | Born | Jean-Chrysostome de Villaret † | Rodez, France | Bishop Emeritus of Casale Monferrato, Italy |
| 29 Jan | 55.4 | Died | Johann Franz Anton Reichsfreiherr von Sirgenstein † | Auxiliary Bishop of Konstanz {Constance}, Germany |
| Feb | 74.5 | Died | Fabio Mancinforte † | Bishop Emeritus of Gubbio, Italy |
| 2 Feb | 65.1 | Installed | José de Fialho, O. Cist. † | Archbishop of São Salvador da Bahia, Brazil | Bishop of Guarda, Portugal |
| Born | Gavino Murro † | Sassari | Archbishop of Sassari, Italy |
| 13 Feb | | Born | Charles Erskine of Kellie † | Rome | Cardinal, Deacon of Roma {Rome}, Italy |
| 30.4 | Appointed | Leopold Ernst Graf von Firmian † | Bishop of Seckau, Austria | Cardinal, Bishop of Passau, Germany |
| 16 Feb | 79.1 | Died | Jean Vivant † | Auxiliary Bishop of Strasbourg, France |
| 17 Feb | 30.4 | Ordained Bishop | Leopold Ernst Graf von Firmian † | Bishop of Seckau, Austria | Cardinal, Bishop of Passau, Germany |
| 23 Feb | 75.6 | Died | Jacinto Arana Cuesta † | Bishop of Zamora, Spain |
| 29.7 | Confirmed | François de Fitz-James † | Bishop of Soissons, France |
| 58.5 | Elevated to Cardinal | Pierre Guérin de Tencin † | Cardinal, Archbishop of Lyon, France |
| Born | Jean-François Hubert † | Québec | Bishop Emeritus of Québec, Québec, Canada |
| 47.0 | Confirmed | Louis-Bernard de La Taste, O.S.B. † | Bishop of Bethléem, France |
| 39.0 | Appointed | Francisco Juan Leiza (de Leyva) † | Auxiliary Bishop of Tlaxcala, Tlaxcala, México |
| 39.0 | Appointed | Francisco Juan Leiza (de Leyva) † | Titular Bishop of Geras | Auxiliary Bishop of Tlaxcala, Tlaxcala, México |
| 43.2 | Appointed | Andrés Núñez Monteagudo † | Auxiliary Bishop of Toledo, Spain |
| 43.2 | Appointed | Andrés Núñez Monteagudo † | Titular Bishop of Adramyttium | Auxiliary Bishop of Toledo, Spain |
| 45.7 | Appointed | Juan Antonio Pérez Arellano † | Auxiliary Bishop of Toledo, Spain |
| 45.7 | Appointed | Juan Antonio Pérez Arellano † | Titular Bishop of Casius | Auxiliary Bishop of Toledo, Spain |
| 24 Feb | | Ordained Bishop | Michael O'Reilly † | Bishop of Derry, Ireland | Archbishop of Armagh, Ireland |
| 2 Mar | | Born | Domenico Spinucci † | Fermo | Cardinal, Archbishop of Benevento, Italy |
| Born | Philipp Franz Wilderich Nepomuk Graf von Walderdorf † | Mainz | Bishop of Speyer, Germany |
| 8 Mar | 43.3 | Appointed | Andrzej Stanisław Załuski † | Bishop of Chelmno (Culma), Poland | Bishop of Kraków, Poland |
| 16 Mar | 24.1 | Ordained Priest | Jean-Olivier Briand † | Priest | Bishop Emeritus of Québec, Québec, Canada |
| Born | Gregorio Jose de Omaña y Sotomayor † | Santiago Tianguistengo | Bishop of Antequera, Oaxaca, México |
| 22 Mar | 27.8 | Appointed | François-Louis Pourroy de L'Auberivière † | Bishop of Québec, Québec, Canada |
| 28 Mar | | Born | Francisco Casto Royo † | El Redal, Spain | Titular Archbishop of Amida |
| 30 Mar | 42.7 | Ordained Priest | Ferdinando Maria de Rossi † | Priest | Cardinal, Prefect of the Congregation of the Council |
| 31 Mar | | Born | Felipe Antonio Fernández Vallejo † | Ocaña | Archbishop of Santiago de Compostela, Spain |
| Born | Wojciech Gorski † | Maków | Bishop of Kielce, Poland |
| 5 Apr | 47.1 | Ordained Bishop | Louis-Bernard de La Taste, O.S.B. † | Bishop of Bethléem, France |
| 16 Apr | | Born | Ferenc Miklósy † | Csakvar | Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 19 Apr | | Born | Pierre de Séguiran † | Aix-en-Provence | Bishop of Nevers, France |
| 28 Apr | | Died | Juan Francisco Antonio de Escandón, C.R. † | Archbishop of Lima, Peru |
| May | | Died | John O'Hart † | Bishop of Achonry, Ireland |
| 3 May | 71.4 | Died | Luis Salcedo Azcona † | Archbishop of Sevilla {Seville}, Spain |
| 4 May | 63.3 | Appointed | Juan Domingo Manzano Carvajal † | Bishop of Jaén, Spain |
| 44.0 | Appointed | Juan Manuel Rodríguez Castañón † | Auxiliary Bishop of Zaragoza, Spain | Bishop of Tui, Spain |
| 44.0 | Appointed | Juan Manuel Rodríguez Castañón † | Titular Bishop of Utica | Bishop of Tui, Spain |
| 7 May | | Born | Salvatore Maria Lombardi † | Magdalena | Bishop of Andria, Italy |
| 8 May | | Born | Miguel da Madre de Deus da Cruz, O.F.M. † | Villa da Torre de Moncorvo, Portugal | Archbishop of Braga, Portugal |
| 10 May | 73.2 | Died | Carlos Alamán Ferrer † | Bishop of Barbastro, Spain |
| 55.0 | Died | José Esteban Noriega, O. Praem. † | Bishop of Solsona, Spain |
| 43.4 | Ordained Bishop | Andrés Núñez Monteagudo † | Titular Bishop of Adramyttium | Auxiliary Bishop of Toledo, Spain |
| 45.2 | Ordained Bishop | Eusebio Oscot, O.P. † | Vicar Apostolic of Fo-Kien, China |
| 45.9 | Ordained Bishop | Juan Antonio Pérez Arellano † | Titular Bishop of Casius | Auxiliary Bishop of Toledo, Spain |
| 26.4 | Ordained Priest | Fernando de Sousa e Silva † | Priest | Cardinal, Patriarch of Lisboa, Portugal |
| Born | John Thomas Troy, O.P. † | Porterstown | Archbishop of Dublin, Ireland |
| 11 May | 85.4 | Died | Benito Madueño y Ramos † | Auxiliary Bishop of Toledo, Spain |
| 12 May | | Born | Edmund Maria Josef Graf Artz von und zu Vasegg † | Einsberg | Auxiliary Bishop of Wien {Vienna}, Austria |
| 15 May | 75.5 | Died | Lorenzo Armengual del Pino de la Mota † | Bishop of Cádiz, Spain |
| 17 May | 55.5 | Ordained Bishop | Pedro González García † | Bishop of Tlaxcala, Tlaxcala, México | Bishop of Avila, Spain |
| 31 May | 30.0 | Ordained Bishop | François de Fitz-James † | Bishop of Soissons, France |
| 21 Jun | 79.3 | Died | Antoine de Charpin de Genetines † | Bishop of Limoges, France |
| 63.5 | Ordained Bishop | Juan Domingo Manzano Carvajal † | Bishop of Jaén, Spain |
| 44.1 | Ordained Bishop | Juan Manuel Rodríguez Castañón † | Titular Bishop of Utica | Bishop of Tui, Spain |
| 22 Jun | | Appointed | Cayetano Benítez de Lugo, O.P. † | Bishop of Zamora, Spain |
| 69.5 | Appointed | Karol Antoni Szembek † | Archbishop of Gniezno, Poland |
| 25 Jun | 48.3 | Resigned | Pierre-Herman Dosquet, P.S.S. † | Bishop of Québec, Québec, Canada | Bishop Emeritus |
| 28 Jun | 61.1 | Ordained Bishop | Juan García Abadiano † | Bishop of Caracas, Santiago de Venezuela |
| 9 Jul | | Born | Anton Ferdinand von Rothkirch und Panthen † | Hönnigsdorf | Auxiliary Bishop of Wrocław, Poland |
| 15 Jul | 40.9 | Appointed | Adam Stanisław Grabowski † | Bishop of Włocławek, Poland | Bishop of Warmia, Poland |
| 18 Jul | | Died | Giovanni Scalea † | Bishop of San Severo, Italy |
| 20 Jul | 31.0 | Appointed | Franz Karl Joseph Reichsgraf von Fugger-Glött † | Auxiliary Bishop of Konstanz {Constance}, Germany | Auxiliary Bishop Emeritus |
| 31.0 | Appointed | Franz Karl Joseph Reichsgraf von Fugger-Glött † | Titular Bishop of Domitiopolis | Auxiliary Bishop Emeritus of Konstanz {Constance}, Germany |
| 28.1 | Confirmed | François-Louis Pourroy de L'Auberivière † | Bishop of Québec, Québec, Canada |
| 43.0 | Appointed | Ferdinando Maria de Rossi † | Titular Archbishop of Tarsus | Cardinal, Prefect of the Congregation of the Council |
| 43.6 | Confirmed | Andrzej Stanisław Załuski † | Bishop of Chelmno (Culma), Poland | Bishop of Kraków, Poland |
| 23 Jul | | Died | Peter Mulligan, O.S.A. † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 2 Aug | | Ordained Bishop | Cayetano Benítez de Lugo, O.P. † | Bishop of Zamora, Spain |
| 43.0 | Ordained Bishop | Ferdinando Maria de Rossi † | Titular Archbishop of Tarsus | Cardinal, Prefect of the Congregation of the Council |
| 4 Aug | 73.3 | Died | Jaime de Mimbela, O.P. † | Bishop of Trujillo, Peru |
| 11 Aug | | Born | Santiago Pérez Arenillas † | Becerril de Campos | Bishop of Gerona, Spain |
| 13 Aug | | Appointed | Walter Blake † | Bishop of Achonry, Ireland |
| 16 Aug | 28.2 | Ordained Bishop | François-Louis Pourroy de L'Auberivière † | Bishop of Québec, Québec, Canada |
| 18 Aug | 82.5 | Died | Juan Álvaro Cienfuegos Villazón, S.J. † | Cardinal, Archbishop of Monreale, Italy |
| 3 Sep | 50.8 | Appointed | Leandro a Pietate, O.A.D. † | Bishop of São Tomé e Príncipe |
| 4 Sep | | Died | Cayetano Benítez de Lugo, O.P. † | Bishop of Zamora, Spain |
| 12 Sep | 48.0 | Appointed | Richard Challoner † | Coadjutor Vicar Apostolic of London District, England, Great Britain | Vicar Apostolic |
| 48.0 | Appointed | Richard Challoner † | Titular Bishop of Doberus | Vicar Apostolic of London District, England, Great Britain |
| 19 Sep | 23.1 | Ordained Priest | Wilhelm von Alhaus, O.S.C. † | Priest of Canons Regular of the Order of the Holy Cross | Auxiliary Bishop of Münster, Germany |
| Appointed | Thomas O’Beirne † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 25 Sep | 82.7 | Died | Vincent-François des Maretz † | Bishop of Saint-Malo, France |
| 28 Sep | | Born | Klemens Wenzeslaus Herzog von Sachsen † | Hubertusburg | Bishop of Augsburg, Germany |
| 30 Sep | 53.7 | Appointed | Juan Francisco Guillén † | Bishop of Islas Canarias {Canary Islands}, Spain | Archbishop of Burgos, Spain |
| 2 Oct | 33.3 | Appointed | Joachim-Enjobert de Martiliat, M.E.P. † | Vicar Apostolic of Yünnan, China | Vicar Apostolic Emeritus |
| 33.3 | Appointed | Joachim-Enjobert de Martiliat, M.E.P. † | Titular Bishop of Echinus | Vicar Apostolic Emeritus of Yünnan, China |
| 11 Oct | 73.6 | Appointed | Johann Franz Riccius † | Auxiliary Bishop of Strasbourg, France |
| 15 Oct | | Born | Francisco Porró Reinado † | Gibraltar, Spain | Bishop of Tarazona, Spain |
| 28 Oct | | Born | Max Polykarp Reichsgraf von Törring-Jettenbach † | München | Bishop of Regensburg, Germany |
| 30 Oct | | Born | Alphonse-Hubert de Latier de Bayane † | Valence, France | Cardinal, Priest of the Roman Curia - Other |
| 6 Nov | 60.3 | Died | Lucas Sartorius Reichsfreiherr Delmestri von Schönberg † | Bishop of Trieste, Italy |
| 8 Nov | 33.4 | Ordained Bishop | Augustin-François-Annibal de Farcy de Cuillé † | Bishop of Quimper, France |
| 14 Nov | 56.5 | Died | Juan de Galabis, O. Praem. † | Archbishop of Santafé en Nueva Granada, Colombia |
| 35.8 | Appointed | Jean-Joseph de Fogasses d'Entrechaux de La Bastie † | Bishop of Saint-Malo, France |
| 15 Nov | | Appointed | Bartolomeo Mollo † | Bishop of San Severo, Italy |
| 16 Nov | | Born | Teodoro Botelho Homen Bernardes † | Lisboa, Portugal | Bishop of Cranganore, India |
| 22 Nov | 59.8 | Ordained Bishop | Louis Néez, M.E.P. † | Titular Bishop of Comana Pontica | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 4 Dec | | Born | Louis-Hector-Honoré-Maxime de Sabran † | Provence | Bishop of Laon, France |
| 7 Dec | | Born | Giovanni Battista a Santa Margarita Pietro Alessandro Banfi, O.C.D. † | Milano | Bishop of Tivoli, Italy |
| 13 Dec | 36.6 | Ordained Bishop | Martin du Bellay † | Bishop of Fréjus, France | Bishop Emeritus |
| 14 Dec | 56.9 | Appointed | Francisco Antonio Bustamante Jiménez † | Bishop of Barbastro, Spain | Bishop of Plasencia, Spain |
| 52.4 | Appointed | Onésimo Salamanca Zaldívar † | Bishop of Zamora, Spain | Archbishop of Burgos, Spain |
| 43.2 | Appointed | Francisco Zarceño Martínez, O.SS.T. † | Bishop of Solsona, Spain |
| 17 Dec | | Born | Istvan Gosztonyi † | Alsó-Lieszko | Auxiliary Bishop of Esztergom, Hungary |
| 19 Dec | 23.1 | Ordained Priest | Johann Andreas Kaiser † | Priest of Praha {Prague}, Czech Republic | Bishop of Hradec Králové, Czech Republic |
| 27 Dec | 54.0 | Ordained Bishop | Juan Francisco Guillén † | Bishop of Islas Canarias {Canary Islands}, Spain | Archbishop of Burgos, Spain |