| Date | Age | Event | Bishop | Title | Current Title |
| 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 |
| 41.4 | Ordained Bishop | Urbain-René de Hercé † | Bishop of Dol, 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 Titular See |
| 2 Aug | 54.4 | Ordained Bishop | Antoine-Joseph des Laurents † | Bishop of Saint-Malo, France |
| 7 Aug | | Born | Gaetano Buglieni † | Saluzzo | Bishop of Mondovi, Italy |
| 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 |
| 41.7 | Appointed | Nicola Filomarini (Filomarino), O.S.B. † | Archbishop (Personal Title) of Caserta, Italy | Bishop |
| 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 |
| 6 Sep | 41.6 | Installed | Urbain-René de Hercé † | Bishop of Dol, France |
| 10 Sep | | Born | Candido Maria Frattini † | Rome, Italy | Titular Archbishop of Philippi |
| 16 Sep | | Born | Francisco Chacim (Chachim), O.F.M. † | Torres Novas, Portugal | Bishop of Macau, China |
| 25 Sep | 69.2 | Died | Nicolò Maria Antonelli † | Cardinal, Cardinal-Priest of Ss. Nereo ed Achilleo |
| Born | Francisco Garcia Cantarines † | Córdoba | Auxiliary Bishop of Antequera, Oaxaca, México |
| 28 Sep | 58.1 | Appointed | Antonio Cantoni † | Archbishop of Ravenna, Italy |
| 35.3 | Appointed | Vitale Giuseppe de' Buoi † | Bishop of Faenza, Italy |
| Appointed | Angelo Luigi Giovo, O.S.B. † | Bishop of Ventimiglia, Italy |
| 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 |
| 18 Oct | | Born | Luigi Scalabrini † | Trapani | Bishop of Mazara del Vallo, Italy |
| 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 |
| 33.8 | Appointed | Jean-Louis d'Usson de Bonac † | Bishop of Agen, France | Bishop Emeritus |
| 59.4 | Ordained Bishop | Johann Philipp Karl Anton Reichsfreiherr von Fechenbach zu Laudenbach † | Titular Bishop of the Titular See |
| 12 Nov | | Born | Francesco Saverio Triggiani, O.F.M. Conv. † | Bari | Bishop Emeritus of Oria, Italy |
| 15 Nov | 74.5 | Died | Giuseppe Maria Feroni † | Cardinal, Cardinal-Priest of S. Cecilia |
| 17 Nov | | Born | Giorgio Manurrita † | Tempio Pausania | Bishop of Ogliastra, Italy |
| 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 |
| 22 Nov | 89.0 | Died | José Botelho de Matos † | Archbishop Emeritus of São Salvador da Bahia, Brazil |
| 26 Nov | 86.5 | Died | Augustin-Roch de Menou de Charnisai † | Bishop of La Rochelle, France |
| 1 Dec | | Born | Jean-Joseph-Pierre Guigou † | Auriol | Bishop of Angoulême, France |
| 7 Dec | 88.4 | Died | Claude-Ignace-Joseph de Simiane de Gordes † | Bishop Emeritus of Saint-Paul-Trois-Châteaux, 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, México |
| 60.4 | Appointed | Carlo Parlati † | Archbishop of Acerenza e Matera, Italy |
| 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 |
| 61.1 | Died | Niccolò Serra † | Cardinal, Titular Archbishop of Mitylene |
| 56.3 | Appointed | Domenico Andrea Vegni † | Bishop of Montalcino, Italy |
| 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 |
| 29 Dec | 51.4 | Died | Tommaso Taglialatela † | Bishop of Sora, Italy |