| Date | Age | Event | Bishop | Title | Current Title |
| 1 Jul | | Born | Alberto Cracchi, O.F.M. † | Landiona | Bishop of Pult, Albania |
| 2 Jul | 74.5 | Died | Michele Di Pietro † | Cardinal, Official of the Roman Curia - Other |
| 7 Jul | 66.4 | Installed | Ferdinand Hermann Maria Freiherr von Lüninck † | Bishop of Münster, Germany |
| 11 Jul | | Appointed | Patrick McGettigan † | Bishop of Raphoe, Ireland |
| 14 Jul | | Born | James Danell † | London | Bishop of Southwark, England, Great Britain |
| 15 Jul | | Born | Giovacchino Limberti † | Prato | Archbishop of Firenze {Florence}, Italy |
| 16 Jul | 29.8 | Incardinated | Jan Kanty Dabrowski † | Priest of Gniezno-Poznań, Poland | Auxiliary Bishop |
| 78.5 | Appointed | Tymoteusz Pawel von Gorzeński † | Archbishop of Gniezno-Poznań, Poland |
| 18 Jul | | Born | Johann Bernard Höting † | Gronau | Bishop of Osnabrück, Germany |
| 20 Jul | 54.9 | Died | Maurice-Jean-Madeleine de Broglie † | Bishop of Gent {Ghent, Gand}, Belgium |
| Born | Michael Hannan † | Killmallock, Ireland | Archbishop of Halifax, Nova Scotia, Canada |
| 1 Aug | 55.6 | Died | Francesco Saverio Dracopoli † | Bishop of Chios (Scio), Greece |
| 2 Aug | 69.3 | Appointed | Etienne-Parfait-Martin Maurel de Mons † | Bishop of Avignon, France | Archbishop of Avignon, France |
| 4 Aug | 59.7 | Appointed | Francesco Saverio Maria Felice Castiglioni † | Official of the Roman Curia - Other | Pope (Roma {Rome}, Italy) |
| 8 Aug | 64.1 | Died | Jean-Joseph Audemar † | Coadjutor Vicar Apostolic of Cochin {Cocincina}, Viêt Nam |
| 11 Aug | | Born | Victoriano Guisasola y Rodríguez † | Oviedo | Archbishop of Santiago de Compostela, Spain |
| 12 Aug | 54.2 | Ordained Bishop | Augustin-Louis de Montblanc † | Titular Archbishop of Cartagine | Archbishop of Tours, France |
| 67.1 | Ordained Bishop | Paul-Ambroise Frère de Villefrancon † | Titular Archbishop of Adana | Archbishop of Besançon, France |
| 13 Aug | 59.7 | Appointed | Francesco Saverio Maria Felice Castiglioni † | Cardinal-Bishop of Frascati | Pope (Roma {Rome}, Italy) |
| 50.4 | Appointed | Modesto Farina † | Bishop of Padova {Padua}, Italy |
| 32.4 | Appointed | Luigi Fransoni † | Bishop of Fossano, Italy | Archbishop of Torino {Turin}, Italy |
| 64.6 | Appointed | Bartolomeo Pacca † | Cardinal-Bishop of Porto e Santa Rufina | Cardinal, Secretary of the Roman Curia - Other |
| 39.2 | Appointed | Antonio Piatti † | Titular Bishop of Trapezus | Titular Patriarch of Antiochia {Antioch}, Syria |
| 17 Aug | | Born | Jean-Auguste-Emile Caraguel † | Labruguière | Bishop of Perpignan-Elne, France |
| 19 Aug | 39.2 | Ordained Bishop | Antonio Piatti † | Titular Bishop of Trapezus | Titular Patriarch of Antiochia {Antioch}, Syria |
| 23 Aug | | Appointed | Angiolo Maria Gilardoni † | Bishop of Livorno, Italy | Bishop of Pistoia-Prato, Italy |
| 28 Aug | | Born | Édouard-Joseph Belin † | Obigios | Bishop of Namur {Namen}, Belgium |
| 9 Sep | 22.9 | Ordained Priest | Johann Georg Müller † | Priest of Trier, Germany | Bishop of Münster, Germany |
| 10 Sep | | Born | John Baptist Scandella † | Gibraltar | Vicar Apostolic of Gibraltar, Gibraltar |
| 12 Sep | 79.0 | Died | José Joaquim da Cunha Azeredo Coutinho † | Bishop of Elvas, Portugal |
| 13 Sep | 74.5 | Died | Francisco Javier Almonacid † | Bishop of Palencia, Spain |
| 78.5 | Appointed | Johann Nepomuk Freiherr von Wolf † | Bishop of Regensburg, Germany |
| 16 Sep | 73.7 | Died | Gerardo José Andrés Vázquez Parga, O. Cist. † | Bishop of Salamanca, Spain |
| 22 Sep | 23.0 | Ordained Priest | Antonio Benedetto Antonucci † | Priest | Cardinal, Bishop of Ancona e Numana, Italy |
| Born | Jean-Pierre-François Laforce-Langevin † | Québec | Bishop Emeritus of Rimouski (St. Germain of), Québec, Canada |
| 23.5 | Ordained Priest | Józef Alojzy Pukalski † | Priest | Bishop of Tarnów, Poland |
| 23 Sep | 79.9 | Died | Nicola Laparelli † | Bishop of Cortona, Italy |
| 65.0 | Died | Manuel Ros Medrano † | Bishop of Tortosa, Spain |
| 24 Sep | 69.6 | Confirmed | Charles-François-Marie Petit-Benoit de Chaffoy † | Bishop of Nimes, France |
| 60.2 | Appointed | Jacques de la Brue de Saint-Bauzile † | Titular Bishop of Tempe |
| 69.4 | Confirmed | Etienne-Parfait-Martin Maurel de Mons † | Bishop of Avignon, France | Archbishop of Avignon, France |
| 53.6 | Confirmed | Antonio Posada Rubín de Celis † | Bishop of Cartagena (en España) | Patriarch of West Indies, Antilles |
| 54.1 | Confirmed | René-François Soyer † | Bishop of Luçon, France |
| 63.6 | Appointed | Franz Ignaz von Streber † | Auxiliary Bishop of München und Freising {Munich}, Germany |
| 63.6 | Appointed | Franz Ignaz von Streber † | Titular Bishop of Birtha | Auxiliary Bishop of München und Freising {Munich}, Germany |
| 29 Sep | 54.1 | Died | Candido Maria Frattini † | Titular Archbishop of Philippi |
| 30 Sep | | Born | Luigi Puecher Passavalli, O.F.M. Cap. † | Cagliano, Italy | Titular Bishop of Iconium |
| 1 Oct | | Died | Robert Walsh † | Bishop of Waterford and Lismore, Ireland |
| 5 Oct | | Born | François-Nicolas-Xavier-Louis Besson † | Baume-les-Dames | Bishop of Nimes (-Uzès e Alès), France |
| 6 Oct | 70.0 | Died | Paolo Lamberto D'Allègre † | Bishop of Pavia, Italy |
| 7 Oct | 23.1 | Ordained Priest | Antonio Novasconi † | Priest | Bishop of Cremona, Italy |
| 8 Oct | | Born | Jules François Lecoq † | Vire | Bishop of Nantes, France |
| 20 Oct | 43.0 | Succeeded | Hyacinthe-Louis de Quélen † | Archbishop of Paris, France |
| 85.0 | Died | Alexandre-Angélique Talleyrand de Périgord † | Cardinal, Archbishop of Paris, France |
| 21 Oct | 69.7 | Ordained Bishop | Charles-François-Marie Petit-Benoit de Chaffoy † | Bishop of Nimes, France |
| 58.0 | Ordained Bishop | Alexandre-Charles-Louis-Rose de Lostanges-Saint-Alvère † | Bishop of Périgueux, France |
| 54.1 | Ordained Bishop | René-François Soyer † | Bishop of Luçon, France |
| 30 Oct | 90.7 | Died | Jean-Baptiste Boulier † | Bishop of Evreux, France |
| 1 Nov | 60.8 | Ordained Bishop | Lothar Anselm Freiherr von Gebsattel † | Archbishop of München und Freising {Munich}, Germany |
| 4 Nov | 78.6 | Confirmed | Johann Nepomuk Freiherr von Wolf † | Bishop of Regensburg, Germany |
| 8 Nov | 68.0 | Died | Francisco Antonio La Dueña Cisneros † | Bishop of Segorbe, Spain |
| 10 Nov | | Born | Giuseppe Gelli † | Lucca | Bishop of Volterra, Italy |
| 11 Nov | 53.3 | Ordained Bishop | Joseph Maria Johann Nepomuk Freiherr von Fraunberg † | Bishop of Augsburg, Germany | Archbishop of Bamberg, Germany |
| 24.9 | Ordained Priest | Eduard Jakob Wedekin † | Priest of Hildesheim, Germany | Bishop |
| 14 Nov | 60.0 | Appointed | Francesco Saverio Maria Felice Castiglioni † | Prefect of the Roman Curia - Other | Pope (Roma {Rome}, Italy) |
| 17 Nov | | Born | Jean-Joseph Fenouil, M.E.P. † | Rudelle, France | Vicar Apostolic of Yünnan, China |
| 18 Nov | 63.7 | Ordained Bishop | Adam Friedrich Freiherr von Groß zu Trockau † | Bishop of Würzburg, Germany |
| 19 Nov | | Born | Luciano Saracani, O.F.M. † | Greccio | Bishop Emeritus of Poggio Mirteto, Italy |
| 21 Nov | 58.1 | Installed | Alexandre-Charles-Louis-Rose de Lostanges-Saint-Alvère † | Bishop of Périgueux, France |
| 69.6 | Installed | Etienne-Parfait-Martin Maurel de Mons † | Bishop of Avignon, France | Archbishop of Avignon, France |
| 4 Dec | 59.9 | Died | Giovanni Antioco Azzei † | Archbishop of Oristano, Italy |
| 9 Dec | 76.0 | Ordained Bishop | Matthäus Georg von Chandelle † | Bishop of Speyer, Germany |
| 12 Dec | | Born | Adolphe-Josué-Frédéric Fiard † | Lens-Lestang | Bishop of Montauban, France |
| 16 Dec | 63.8 | Ordained Bishop | Franz Ignaz von Streber † | Titular Bishop of Birtha | Auxiliary Bishop of München und Freising {Munich}, Germany |
| 18 Dec | | Born | Francisco Cardoso Aires † | Recife | Bishop of Olinda, Brazil |
| 21 Dec | | Born | Thomas Grimley † | Kerries, Ireland | Vicar Apostolic of Cape of Good Hope, Western District {Capo di Buona Speranza, Distretto Occidentale}, South Africa |
| 60.5 | Ordained Bishop | Jacques de la Brue de Saint-Bauzile † | Titular Bishop of Tempe |
| 22 Dec | 23.1 | Ordained Priest | Jean-Baptiste-Pierre-Léonard Berteaud † | Priest | Bishop Emeritus of Tulle, France |
| 24.5 | Ordained Priest | Charles-Nicolas-Pierre Didiot † | Priest of Verdun, France | Bishop of Bayeux (-Lisieux), France |
| 23 Dec | 63.8 | Installed | Adam Friedrich Freiherr von Groß zu Trockau † | Bishop of Würzburg, Germany |
| 26 Dec | 71.9 | Appointed | Claude-Jean-Joseph Brulley de La Brunière † | Bishop of Mende, France |
| 60.3 | Appointed | Charles-Louis Salmon du Châtelier † | Bishop of Evreux, France |
| 30 Dec | 78.8 | Died | Józef Gabriel Gembart † | Auxiliary Bishop of Gniezno-Poznań, Poland |