| Date | Age | Event | Bishop | Title | Current Title |
| 5 Jul | 51.2 | Appointed | Niccolò Borgia † | Bishop of Cava (de’ Tirreni), Italy | Bishop of Aversa, Italy |
| 54.9 | Appointed | Ippolito Graziadei † | Bishop of Città della Pieve, Italy |
| 76.8 | Appointed | Januarius Guglielmini † | Titular Archbishop of Tarsus | Bishop Emeritus of Tropea, Italy |
| 38.7 | Appointed | Pierre de La Romagère de Ronssecy † | Bishop of Tarbes, France |
| 36.4 | Appointed | Giacinto Sardi † | Bishop of Aquino e Pontecorvo, Italy |
| 61.2 | Appointed | Pedro Fernández Velarde † | Bishop of Segorbe, Spain |
| 6 Jul | 65.5 | Appointed | Daniele Delfino † | Cardinal, Archbishop of Udine, Italy |
| 11 Jul | 51.2 | Ordained Bishop | Niccolò Borgia † | Bishop of Cava (de’ Tirreni), Italy | Bishop of Aversa, Italy |
| 36.5 | Ordained Bishop | Giacinto Sardi † | Bishop of Aquino e Pontecorvo, Italy |
| 60.5 | Died | Scipione Sersale † | Bishop of Lecce, Italy |
| 17 Jul | | Appointed | Augustine Cheevers, O.S.A. † | Bishop of Ardagh (and Clonmacnois), Ireland | Bishop of Meath, Ireland |
| 19 Jul | | Born | Henri-Marie-Clauce de Bruc-Montplaisir † | Vallet | Bishop of Vannes, France |
| 37.5 | Confirmed | Gabriel Cortois de Quincey † | Bishop of Belley, France |
| Born | Pierre-Vincent Dombideau de Crouseilhes † | Pau | Bishop of Quimper, France |
| 60.9 | Appointed | Bartolomé Rajoy Losada † | Archbishop of Santiago de Compostela, Spain |
| 30.3 | Appointed | Segherio Felice Seghieri † | Bishop of Sovana (Soana), Italy |
| 54.2 | Appointed | Jean-Antoine de Tinseau † | Bishop of Nevers, France |
| 25 Jul | 30.3 | Ordained Bishop | Segherio Felice Seghieri † | Bishop of Sovana (Soana), Italy |
| 27 Jul | 58.8 | Ordained Bishop | Francis Petre † | Titular Bishop of Amorium | Vicar Apostolic of Northern District, England, Great Britain |
| 29 Jul | 87.8 | Died | Tommaso Cervini † | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 23.2 | Ordained Priest | Raffaele Pasca, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Teano, Italy |
| Aug | | Born | Agostino Colaianni † | Barisciano | Bishop of Sora, Italy |
| 8 Aug | 29.8 | Ordained Priest | Jan Kanty Leńczowski † | Priest | Auxiliary Bishop of Kraków, Poland |
| 15 Aug | 55.7 | Installed | Francisco Javier de Luna Victoria y Castro † | Bishop of Panamá | Bishop of Trujillo, Peru |
| 17 Aug | 68.7 | Died | Gennaro Fortunato † | Bishop of Cassano all’Jonio, Italy |
| 19 Aug | 68.9 | Died | François-Honoré de Beauvillier de Saint-Aignan † | Bishop Emeritus of Beauvais, France |
| 22 Aug | 37.6 | Ordained Bishop | Gabriel Cortois de Quincey † | Bishop of Belley, France |
| 42.6 | Ordained Bishop | Joseph-Antoine-Jacques Richier de Cérisy † | Bishop of Lombez, France |
| 23 Aug | | Born | Marie-Jean-Philippe Dubourg † | Toulouse | Bishop of Limoges, France |
| Born | Michele Natale † | Casapulla | Bishop of Vico Equense, Italy |
| Born | Viviano Orfini † | Foligno, Italy | Cardinal, Priest of the Roman Curia - Other |
| 25 Aug | | Died | Matías Ibáñez † | Bishop of La Paz, Bolivia |
| 26 Aug | 33.0 | Ordained Bishop | Henri-Marie-Bernardin de Rosset de Ceilhes de Fleury † | Archbishop of Tours, France | Archbishop of Cambrai, France |
| 29 Aug | 38.8 | Ordained Bishop | Pierre de La Romagère de Ronssecy † | Bishop of Tarbes, France |
| 31 Aug | | Died | Louis-Baltasar Phélypeaux d’Herbault † | Bishop of Riez, France |
| 1 Sep | 56.3 | Died | José Larumbe Mallí † | Bishop of Tui, Spain |
| 85.3 | Resigned | Lorenzo Tartagni † | Bishop of Veroli, Italy | Bishop Emeritus |
| 3 Sep | | Born | Michele Spinelli, C.R. † | Napoli | Archbishop of Sorrento, Italy |
| 6 Sep | | Born | Luigi Pandolfi † | Cartoceto, Italy | Cardinal, Cardinal-Priest of Santa Sabina |
| 8 Sep | 48.7 | Died | André-Jean-Baptiste-Dominique de Castellane † | Bishop of Glandèves, France |
| Born | Antonio Frosini † | Modena, Italy | Cardinal, Prefect Emeritus of the Congregation for Indulgences and Relics |
| 10 Sep | 44.8 | Appointed | Pietro Saverio Antonini † | Bishop of Veroli, Italy | Bishop Emeritus |
| 12 Sep | 61.0 | Ordained Bishop | Bartolomé Rajoy Losada † | Archbishop of Santiago de Compostela, Spain |
| 76.5 | Died | Felipe de los Tueros Huerta † | Archbishop of Granada, Spain |
| 61.4 | Ordained Bishop | Pedro Fernández Velarde † | Bishop of Segorbe, Spain |
| 18 Sep | 23.6 | Ordained Priest | Carlo di Ambrosio † | Priest | Bishop of Larino, Italy |
| 22.9 | Ordained Priest | Pius Bonifacius Fassati, O.P. † | Priest of Order of Friars Preachers | Bishop Emeritus of Tortona, Italy |
| 22.8 | Ordained Priest | Francesco Paolo Mandarani † | Priest | Bishop of Nicastro, Italy |
| 24.5 | Ordained Priest | Joseph-Marie Paget † | Priest | Bishop Emeritus of Genève {Geneva}, Switzerland |
| 22.1 | Ordained Priest | Dominique Maria de Santini † | Priest | Bishop Emeritus of Nebbio, France |
| 25.0 | Ordained Priest | Jacques-Thomas-Joseph Wellens † | Priest | Bishop of Antwerpen {Antwerp, Anvers}, Belgium |
| 19 Sep | 26.3 | Ordained Priest | Johann Heinrich von Kerens, S.J. † | Priest of Society of Jesus | Bishop of Sankt Pölten, Austria |
| 20 Sep | 44.6 | Appointed | Giuseppi Maria Massoni † | Bishop of Sagone (Sagona), France |
| 36.9 | Appointed | Christoph Bartholomäus Anton Migazzi Von Waal Und Sonnenthurn † | Coadjutor Archbishop of Mechelen, Belgium | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 36.9 | Appointed | Christoph Bartholomäus Anton Migazzi Von Waal Und Sonnenthurn † | Titular Archbishop of Cartagine | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 41.4 | Appointed | Tommaso de Moncada, O.P. † | Patriarch of Jerusalem {Gerusalemme}, Palestine | Archbishop of Messina, Italy |
| 22 Sep | 76.0 | Died | Angelo Franchi, O.F.M. † | Archbishop of Dubrovnik (Ragusa), Croatia |
| 26 Sep | 44.8 | Ordained Bishop | Pietro Saverio Antonini † | Bishop of Veroli, Italy | Bishop Emeritus |
| 44.6 | Ordained Bishop | Giuseppi Maria Massoni † | Bishop of Sagone (Sagona), France |
| 3 Oct | 42.0 | Selected | Jean-Baptiste de Belloy-Morangle † | Bishop of Glandèves, France | Cardinal, Archbishop of Paris, France |
| Born | Georg Franz Lock † | Wittichenau | Prefect of Meißen (Meissen) {Lusazia o Lausitz; Sassonia}, Germany |
| 46.8 | Selected | Lucretius-Henri-François de La Tour du Pin † | Bishop of Riez, France |
| 5 Oct | 40.6 | Appointed | Giovanni Battista Albrici Pellegrini † | Titular Bishop of Epiphania in Syria | Bishop of Como, Italy |
| 10 Oct | 37.0 | Ordained Bishop | Christoph Bartholomäus Anton Migazzi Von Waal Und Sonnenthurn † | Titular Archbishop of Cartagine | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 17 Oct | 63.8 | Died | Pietro Antonio Corsignani † | Bishop of Valva, Italy |
| Born | Paolo Lamberto D’Allègre † | Torino | Bishop of Pavia, Italy |
| 18 Oct | 68.5 | Died | Antonio Alejandro Sarmiento Sotomayor, O.S.B. † | Bishop of Mondoñedo, Spain |
| 21 Oct | 69.2 | Died | Annibale Albani † | Bishop of Porto e Santa Rufina, Italy | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 24 Oct | | Born | Feliks Łukasz Lewiński † | Srzeplen | Bishop of Janów Podlaski (Podlaska o Janów), Poland |
| Nov | 74.2 | Died | Antonio Marulli † | Titular Archbishop of Nazareth |
| 6 Nov | | Born | Vincenzo Maria Manieri, O.F.M. Conv. † | Neritonen | Bishop of Ruvo e Bitonto, Italy |
| 8 Nov | 26.7 | Appointed | Henry Benedict Mary Clement Stuart of York † | Archpriest of the Basilica di San Pietro in Vaticano {Saint Peter Basilica} | Cardinal, Bishop of Frascati, Italy |
| 9 Nov | 53.1 | Died | Michal Ignacy Kunicki † | Auxiliary Bishop of Kraków, Poland |
| 11 Nov | | Born | Giuseppe Maria Doria Pamphilj † | Genova, Italy | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 12 Nov | 70.4 | Died | Juan de Arechederra, O.P. † | Bishop-Elect of Nueva Segovia, Philippines |
| 15 Nov | 55.9 | Appointed | Bernardo de Arbizu y Ugarte † | Bishop of Trujillo, Peru | Archbishop of La Plata o Charcas, Bolivia |
| 74.4 | Appointed | Pier Luigi Carafa (Jr.) † | Cardinal-Bishop of Porto e Santa Rufina | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| Appointed | Miklós József Csáky † | Archbishop of Esztergom, Hungary |
| 41.6 | Appointed | György Klimó † | Bishop of Pécs, Hungary |
| 42.2 | Appointed | Vito Antonio Mastrandrea † | Bishop of Vico Equense, Italy |
| 47.7 | Appointed | Alfonso Sozy Carafa, C.R.S. † | Bishop of Lecce, Italy |
| 70.4 | Appointed | Giovanni Battista Spínola † | Cardinal, Cardinal-Bishop of Albano |
| 17 Nov | | Born | Johann Michael von Sailer † | Aresing | Bishop of Regensburg, Germany |
| 21 Nov | 42.2 | Ordained Bishop | Vito Antonio Mastrandrea † | Bishop of Vico Equense, Italy |
| 30 Nov | 22.9 | Ordained Priest | Cristian Saverio Cristiani, O.S.A. † | Priest of Order of St. Augustine | Titular Bishop of Porphyreon |
| 7 Dec | | Died | Jean-Baptiste-Antoine de Vaccon † | Bishop of Apt, France |
| 15 Dec | 65.0 | Died | Guilherme de São José Antonio de Aranha † | Bishop Emeritus of Belém do Pará, Brazil |
| 16 Dec | | Born | Manuel de Aguiar † | Evora | Bishop of Leiria, Portugal |
| 18 Dec | 23.0 | Ordained Priest | Angelicus (Bartholomaeus) Benincasa, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Archbishop of Camerino, Italy |
| 24.4 | Ordained Priest | Jean-Marie Cuchot d’Herbain † | Priest of Strasbourg, France | Auxiliary Bishop Emeritus of Trier, Germany |
| 25.4 | Ordained Priest | Gaetano Ginanni (Giannini) † | Priest | Bishop of Foligno, Italy |
| 23.0 | Ordained Priest | Marco de Leone † | Priest | Bishop of Satriano e Campagna, Italy |
| 24.2 | Ordained Priest | Michael Zorawski † | Priest | Titular Bishop of Thespiae |
| 20 Dec | 42.2 | Confirmed | Jean-Baptiste de Belloy-Morangle † | Bishop of Glandèves, France | Cardinal, Archbishop of Paris, France |
| Resigned | Patrick Bradley, O.P. † | Bishop of Derry, Ireland | Bishop Emeritus |
| 47.9 | Appointed | Giusto de Marco, C.R. † | Titular Archbishop of Nazareth |
| 45.8 | Appointed | John Joseph Hornyold † | Coadjutor Vicar Apostolic of Midland District, England, Great Britain | Vicar Apostolic |
| 45.8 | Appointed | John Joseph Hornyold † | Titular Bishop of Philomelium | Vicar Apostolic of Midland District, England, Great Britain |
| 44.1 | Appointed | Franjo Klobusiczky † | Archbishop of Kalocsa, Hungary |
| 47.0 | Confirmed | Lucretius-Henri-François de La Tour du Pin † | Bishop of Riez, France |
| 65.6 | Appointed | José Francisco de San Buenaventura Martínez de Tejada y Díez de Velasco, O.F.M. † | Bishop of Guadalajara, Jalisco, México |
| Appointed | Bartolomé de Narváez y Berrio † | Bishop of Cartagena, Colombia |
| 21 Dec | 47.9 | Ordained Bishop | Giusto de Marco, C.R. † | Titular Archbishop of Nazareth |
| 22 Dec | 50.0 | Succeeded | Jakub Stefan Augustynowicz † | Archbishop of Lviv (Armenian), Ukraine | Coadjutor Archbishop |
| 87.1 | Died | Jan Tobiasz Augustynowicz † | Archbishop of Lviv (Armenian), Ukraine |
| 64.0 | Died | Filippo Felice del Prete † | Bishop of Conversano, Italy |
| 24 Dec | | Born | François-Marie Bigex † | La Balme-de-Thuy, France | Archbishop of Chambéry, France |
| 30 Dec | 64.5 | Installed | Guillaume d’Hugues de la Motte † | Archbishop of Vienne, France |