| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 65.0 | Died | Nicolas de Bouillé de Saint-Géran † | Bishop of Autun, France |
| Appointed | Antonio Cantoni † | Archbishop of Ravenna, Italy |
| Appointed | Francesco D'Afflitto † | Bishop of Lettere-Gragnano, Italy |
| Born | Jean-Joseph Delplancq † | | Bishop of Tournai {Doornik}, Belgium |
| Died | Agostino Giannini † | Bishop of Lettere-Gragnano, Italy |
| 22.2 | Ordained Priest | Michal Franciszek Karpowicz, C.M. † | Priest of Congregation of the Mission | Bishop of Wigry, Poland |
| 64.0 | Died | Władysław Aleksander Łubieński † | Archbishop of Gniezno, Poland |
| Born | Mariano Medrano y Cabrera † | Buenos Aires | Bishop of Buenos Aires, Argentina |
| 47.8 | Appointed | Gabriel Jan Podoski † | Archbishop of Gniezno, Poland |
| 40.0 | Appointed | Jean-Marc de Royére † | Bishop of Tréguier, France | Bishop Emeritus of Castres, France |
| 1 Jan | | Born | Antoine Casimir Libère de Stockem † | Liege | Auxiliary Bishop of Liège, Belgium |
| 22 Jan | 64.9 | Died | Pedro Albornoz Tapia † | Bishop of Orihuela, Spain |
| 23 Jan | | Born | Alexande-Raymond Devie † | Montélimar | Bishop of Belley, France |
| 24 Jan | 40.9 | Appointed | François Pottier, M.E.P. † | Vicar Apostolic of Se-Ciuen, China |
| 40.9 | Appointed | François Pottier, M.E.P. † | Titular Bishop of Agathopolis | Vicar Apostolic of Se-Ciuen, China |
| 25 Jan | 23.5 | Ordained Priest | Pierre Denaut † | Priest | Bishop of Québec, Québec, Canada |
| 27 Jan | 82.4 | Died | Francisco Javier Sánchez Cabezón † | Bishop of Astorga, Spain |
| 29 Jan | 63.0 | Died | Jean-Joseph de Fogasses d'Entrechaux de La Bastie † | Bishop of Saint-Malo, France |
| 2 Feb | 50.1 | Ordained Bishop | Andrzej Mikolaj Stanislaw Kostka Mlodziejowski † | Bishop of Przemyśl, Poland | Bishop of Poznań, Poland |
| 14 Feb | | Born | Valery Henryk Kamionko † | Puladowicz | Auxiliary Bishop of Lviv, Ukraine |
| 16 Feb | 35.8 | Appointed | Ernest Johann Nepomuk Reichsgraf von Herberstein (Herbstein) † | Auxiliary Bishop of Freising, Germany | Bishop of Linz, Austria |
| 35.8 | Appointed | Ernest Johann Nepomuk Reichsgraf von Herberstein (Herbstein) † | Titular Bishop of Eucarpia | Bishop of Linz, Austria |
| 22 Feb | 54.3 | Ordained Bishop | Adam Ernst Bernclau von Schönreith † | Titular Bishop of Abila in Palaestina | Auxiliary Bishop of Regensburg, Germany |
| 54.7 | Ordained Bishop | Miguel Fernando Merino † | Bishop of Avila, Spain |
| 24 Feb | 66.1 | Died | Manuel de Matos, O.F.M. † | Bishop of Nueva Caceres, Philippines |
| 2 Mar | | Born | Tommaso Ronna † | Milan | Bishop of Crema, Italy |
| 4 Mar | | Born | Giovanni Battista Iacobini † | Genzano | Bishop of Bagnoregio (Bagnorea), Italy |
| 8 Mar | 35.9 | Ordained Bishop | Ernest Johann Nepomuk Reichsgraf von Herberstein (Herbstein) † | Titular Bishop of Eucarpia | Bishop of Linz, Austria |
| Born | Giuseppe Maria Velzi, O.P. † | Como | Cardinal, Bishop of Montefiascone, Italy |
| 11 Mar | 73.7 | Died | Vito Moio † | Bishop of Muro Lucano, Italy |
| 14 Mar | 24.2 | Ordained Priest | Giovanni Francesco d’Alessandria † | Priest | Bishop of Catanzaro, Italy |
| 24.1 | Ordained Priest | Tymoteusz Pawel von Gorzeński † | Priest of Poznań, Poland | Archbishop of Gniezno-Poznań, Poland |
| 23.0 | Ordained Priest | Joseph Hieronymus Karl Freiherr von Kolborn † | Priest of Mainz, Germany | Auxiliary Bishop of Regensburg, Germany |
| 17 Mar | | Born | José Ignacio de Arancibia y Hormaguei, O.F.M. † | Lequeitio | Bishop of Linares o Nueva León, Nuevo León, México |
| 19 Mar | 45.7 | Ordained Priest | Bernardino Giraud † | Priest | Cardinal, Archbishop Emeritus of Ferrara, Italy |
| 20 Mar | 26.4 | Ordained Priest | Charles-François Bailly de Messein † | Priest of Québec, Québec, Canada | Coadjutor Bishop |
| 25 Mar | 23.0 | Ordained Priest | Francesco Milesi † | Priest | Patriarch of Venezia {Venice}, Italy |
| 4 Apr | 23.0 | Ordained Priest | Bonaventura Gazola, O.F.M. † | Priest of Order of Friars Minor | Cardinal, Bishop of Montefiascone, Italy |
| 6 Apr | 45.7 | Appointed | Bernardino Giraud † | Titular Archbishop of Damascus | Cardinal, Archbishop Emeritus of Ferrara, Italy |
| 7 Apr | | Born | Giovanni Francesco Falzacappa † | Corneto | Cardinal, Prefect of the Apostolic Signatura |
| 9 Apr | 26.6 | Ordained Priest | Marc-Antione Berdolet † | Priest of Besançon, France | Bishop of Aachen, Germany |
| 14 Apr | | Died | Giuseppe Saporiti † | Archbishop of Genova, Italy |
| 18 Apr | 54.2 | Appointed | Antoine-Joseph des Laurents † | Bishop of Saint-Malo, France |
| 19 Apr | 30.3 | Appointed | Louis-André de Grimaldi † | Bishop of Le Mans, France | Bishop Emeritus of Noyon, France |
| 46.0 | Appointed | Pierre-Louis de Leyssin † | Archbishop of Embrun, France |
| 32.9 | Appointed | Yves-Alexandre de Marbeuf † | Bishop of Autun, France | Archbishop of Lyon, France |
| 21 Apr | 25.2 | Ordained Priest | José de Santa Escolástica Álvares (Alves) Pereira, O.S.B. † | Priest of Order of Saint Benedict | Archbishop of São Salvador da Bahia, Brazil |
| 26 Apr | 45.8 | Ordained Bishop | Bernardino Giraud † | Titular Archbishop of Damascus | Cardinal, Archbishop Emeritus of Ferrara, Italy |
| 27 Apr | | Appointed | Miguel Cilieza y Velasco † | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| 50.0 | Appointed | Antonio Jorge y Galván † | Bishop of Zamora, Spain | Archbishop of Granada, Spain |
| Born | Camillo Giovanni Rossi † | Avellino | Bishop Emeritus of San Severo, Italy |
| 28 Apr | | Appointed | Julien-François Becquet, C.S.Sp. † | Prefect of Iles Saint-Pierre et Miquelon | Prelate Emeritus |
| 45.8 | Appointed | Bernardino Giraud † | Apostolic Nuncio to France | Cardinal, Archbishop Emeritus of Ferrara, Italy |
| 8 May | | Born | Pierre-Michel-Marie Double † | Verdun-sur-Garonne, Tarn-et-Garonne | Bishop of Tarbes, France |
| 28 May | | Born | Augustin-Louis de Montblanc † | Sausse | Archbishop of Tours, France |
| 1 Jun | 56.9 | Appointed | Juan Manuel Merino Lumbreras † | Bishop of Astorga, Spain |
| 2 Jun | | Born | Gaetano Maria Giuseppe Benedetto Placido Vincenzo Trigona e Parisi † | Sicily | Cardinal, Archbishop of Palermo, Italy |
| 8 Jun | 37.0 | Ordained Priest | Johann Nepomuk Augustin Reichsfreiherr von Hornstein zu Hohenstoffen † | Priest of Konstanz {Constance}, Germany | Auxiliary Bishop Emeritus |
| 13 Jun | 22.9 | Ordained Priest | Andrzej Choloniewski † | Priest | Auxiliary Bishop of Vilnius, Lithuania |
| 29.4 | Ordained Priest | Tiberio Cortese † | Priest | Bishop of Modena, Italy |
| 23.2 | Ordained Priest | Vicente Alexandre de Tovar † | Priest | Prelate of Goiás, Brazil |
| 15 Jun | 30.5 | Confirmed | Louis-André de Grimaldi † | Bishop of Le Mans, France | Bishop Emeritus of Noyon, France |
| 46.1 | Confirmed | Pierre-Louis de Leyssin † | Archbishop of Embrun, France |
| 33.1 | Confirmed | Yves-Alexandre de Marbeuf † | Bishop of Autun, France | Archbishop of Lyon, France |
| 2 Jul | | Born | Antonio Cinque † | Morano | Bishop of Anglona-Tursi, Italy |
| 5 Jul | 50.2 | Ordained Bishop | Antonio Jorge y Galván † | Bishop of Zamora, Spain | Archbishop of Granada, Spain |
| 30.6 | Ordained Bishop | Louis-André de Grimaldi † | Bishop of Le Mans, France | Bishop Emeritus of Noyon, France |
| 46.2 | Ordained Bishop | Pierre-Louis de Leyssin † | Archbishop of Embrun, France |
| 6 Jul | | Born | Ignatz Albert (Joseph Ignatz Alexius) von Riegg, O.S.A. † | Landsberg/Lech | Bishop of Augsburg, Germany |
| 7 Jul | 82.1 | Died | Gabriel-Florent de Choiseul-Beaupré † | Bishop of Mende, France |
| 9 Jul | 54.6 | Died | Charles Antoine de Grady † | Auxiliary Bishop of Liège, Belgium |
| 10 Jul | 57.2 | Appointed | Carlo Gagliardi † | Bishop of Muro Lucano, Italy |
| 44.7 | Appointed | Giovanni Lercari † | Archbishop of Genova, Italy |
| 12 Jul | | Ordained Bishop | Francesco D'Afflitto † | Bishop of Lettere-Gragnano, Italy |
| 57.2 | Ordained Bishop | Carlo Gagliardi † | Bishop of Muro Lucano, Italy |
| 33.2 | Ordained Bishop | Yves-Alexandre de Marbeuf † | Bishop of Autun, France | Archbishop of Lyon, France |
| 19 Jul | 57.1 | Ordained Bishop | Juan Manuel Merino Lumbreras † | Bishop of Astorga, Spain |
| 20 Jul | 63.8 | Died | Luis García Mañero † | Archbishop of Zaragoza, Spain |
| 25 Jul | | Born | Antoine-Jacques de Chamon † | Bulgnéville | Bishop of Saint-Claude, France |
| 26 Jul | 65.6 | Died | Jean-Gaspard-Gilbert de Chabannas † | Bishop of Agen, France |
| 31 Jul | | Born | Filippo Cattani † | Modena | Bishop of Reggio Emilia, Italy |
| 59.2 | Appointed | Johann Philipp Karl Anton Reichsfreiherr von Fechenbach zu Laudenbach † | Titular Bishop of the unknown of Titular See |
| 2 Aug | 54.4 | Ordained Bishop | Antoine-Joseph des Laurents † | Bishop of Saint-Malo, France |
| 21 Aug | 61.1 | Succeeded | James Grant † | Vicar Apostolic of Lowland District, Scotland, Great Britain |
| 73.6 | Died | Alexander Smith † | Vicar Apostolic of Lowland District, Scotland, Great Britain |
| 23 Aug | 55.2 | Ordained Bishop | Pedro Cortez y Larraz † | Archbishop of Guatemala | Bishop Emeritus of Tortosa, Spain |
| 22.9 | Ordained Priest | Angelo Vincenzo Andrea Maria Dania, O.P. † | Priest of Order of Friars Preachers | Bishop of Albenga, Italy |
| 29 Aug | | Born | Antônio de São José Bastos, O.S.B. † | Rio de Janeiro | Bishop of Olinda, Brazil |
| 31 Aug | 33.0 | Appointed | Charles Alexandre d'Arberg et de Valengin † | Auxiliary Bishop of Liège, Belgium | Bishop Emeritus of Ypres (Ieper), Belgium |
| 33.0 | Appointed | Charles Alexandre d'Arberg et de Valengin † | Titular Bishop of Amyzon | Bishop Emeritus of Ypres (Ieper), Belgium |
| 37.1 | Appointed | Maria Romedius Graf von Sarnthein † | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 37.1 | Appointed | Maria Romedius Graf von Sarnthein † | Titular Bishop of Augustopolis in Phrygia | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 5 Sep | | Born | René-François Soyer † | Thouarcé | Bishop of Luçon, France |
| 10 Sep | | Born | Candido Maria Frattini † | Rome, Italy | Titular Archbishop of Philippi |
| 16 Sep | | Born | Francisco Chachim, O.F.M. † | Torres Novas, Portugal | Bishop of Macau, China |
| 25 Sep | | Born | Francisco Garcia Cantarines † | Córdoba | Auxiliary Bishop of Antequera, Oaxaca, México |
| 29 Sep | 45.7 | Appointed | Krysztof Hilary Szembek † | Coadjutor Bishop of Chelmno (Culma), Poland | Bishop of Płock, Poland |
| 1 Oct | 63.7 | Appointed | William Maire † | Coadjutor Vicar Apostolic of Northern District, England, Great Britain |
| 63.7 | Appointed | William Maire † | Titular Bishop of Cinna | Coadjutor Vicar Apostolic of Northern District, England, Great Britain |
| 10 Oct | | Ordained Bishop | Miguel Cilieza y Velasco † | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| 37.2 | Ordained Bishop | Maria Romedius Graf von Sarnthein † | Titular Bishop of Augustopolis in Phrygia | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 17 Oct | 54.6 | Installed | Antoine-Joseph des Laurents † | Bishop of Saint-Malo, France |
| 25 Oct | 33.2 | Ordained Bishop | Charles Alexandre d'Arberg et de Valengin † | Titular Bishop of Amyzon | Bishop Emeritus of Ypres (Ieper), Belgium |
| 28 Oct | | Born | Leonardo de Sousa Brandão † | Vinho de Somto | Bishop of Pinhel, Portugal |
| 1 Nov | 33.9 | Appointed | Jean-Arnauld de Castellane † | Bishop of Mende, France |
| 59.4 | Ordained Bishop | Johann Philipp Karl Anton Reichsfreiherr von Fechenbach zu Laudenbach † | Titular Bishop of the unknown of Titular See |
| 15 Nov | 74.5 | Died | Giuseppe Maria Feroni † | Cardinal, Cardinal-Priest of S. Cecilia |
| 20 Nov | | Appointed | Tommaso Battiloro † | Titular Bishop of Claudiopolis in Isauria | Bishop Emeritus of San Severo, Italy |
| Resigned | Tommaso Battiloro † | Bishop of San Severo, Italy | Bishop Emeritus |
| 1 Dec | | Born | Jean-Joseph-Pierre Guigou † | Auriol | Bishop of Angoulême, France |
| 11 Dec | 80.9 | Died | Gaspar Miranda Argáiz † | Bishop of Pamplona, Spain |
| Born | Francisco de São Damazo Abreu Vieira, O.F.M. † | Guimarães | Archbishop of São Salvador da Bahia, Brazil |
| 13 Dec | 24.8 | Ordained Priest | David Zsolnai † | Priest | Auxiliary Bishop of Veszprém, Hungary |
| 14 Dec | 51.3 | Appointed | Rafael Lasala Locela, O.S.A. † | Auxiliary Bishop of Valencia, Spain | Bishop of Solsona, Spain |
| 51.3 | Appointed | Rafael Lasala Locela, O.S.A. † | Titular Bishop of Adramyttium | Bishop of Solsona, Spain |
| 49.7 | Appointed | Antonio Macarulla Minguilla de Aguilain † | Bishop of Comayagua, Honduras | Bishop of Durango, Durango, México |
| 54.7 | Appointed | Isidro Rodríguez Lorenzo, O.S.Bas. † | Archbishop of Santo Domingo, Dominican Republic | Archbishop Emeritus |
| 71.4 | Appointed | Ferdinando Maria de Rossi † | Cardinal-Priest of S. Cecilia | Cardinal, Prefect of the Congregation of the Council |
| 19 Dec | 23.0 | Ordained Priest | Salvatore Maria Caccamo, O.S.A. † | Priest of Order of St. Augustine | Titular Archbishop of Larissa in Thessalia |
| 23.0 | Ordained Priest | St. Vincenzo Maria Strambi, C.P. † | Priest of Congregation of the Passion | Bishop of Macerata-Tolentino, Italy |
| 23 Dec | | Installed | Miguel Cilieza y Velasco † | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| 25 Dec | 32.9 | Ordained Bishop | Ignacy Błażej Franciszek Krasicki † | Bishop of Warmia, Poland | Archbishop of Gniezno, Poland |
| 28 Dec | | Born | Tomas Chmielewski † | Chmielowo | Auxiliary Bishop of Warszawa {Warsaw}, Poland |