| Date | Age | Event | Bishop | Title | Current Title |
| 4 Jul | 49.0 | Died | Franz Joseph Anton von Hahn † | Auxiliary Bishop of Bamberg, Germany |
| 6 Jul | 78.5 | Died | Krzysztof Antoni Szembek † | Archbishop of Gniezno, Poland |
| 10 Jul | 75.5 | Died | Gaspard de La Valette de Thomas † | Bishop Emeritus of Autun, France |
| 12 Jul | 41.5 | Appointed | Meletius Kovács † | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 41.5 | Appointed | Meletius Kovács † | Titular Bishop of Tegea | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 65.3 | Resigned | Louis-François-Renaud de Villeneuve † | Bishop of Viviers (Aps), France | Bishop of Montpellier, France |
| 15 Jul | 50.4 | Appointed | João de Azevedo † | Bishop of Portalegre, Portugal |
| 56.4 | Appointed | Giustino Bagnesi, O.S.B. † | Bishop of Chiusi, Italy | Bishop of Chiusi e Pienza, Italy |
| 47.7 | Appointed | Antonio Correale † | Bishop of Sora, Italy |
| Born | Joseph Jakob von Heckenstaller † | Regensburg | Vicar Apostolic Emeritus of Freising, Germany |
| 34.9 | Confirmed | Antoine de Malvin de Montazet † | Bishop of Autun, France | Archbishop of Lyon, France |
| 50.0 | Appointed | Józef Pawłowski † | Auxiliary Bishop of Poznań, Poland |
| 50.0 | Appointed | Józef Pawłowski † | Titular Bishop of Niochensis | Auxiliary Bishop of Poznań, Poland |
| 44.0 | Appointed | Ignazio Rovèro † | Bishop of Novara, Italy |
| 19 Jul | 45.2 | Died | Isidoro Marín Bullón y Figueroa † | Bishop of Nicaragua |
| 20 Jul | | Born | Giulio Gabrielli † | Rome | Cardinal, Prefect Emeritus of the Congregation of the Council |
| 21 Jul | 56.4 | Ordained Bishop | Giustino Bagnesi, O.S.B. † | Bishop of Chiusi, Italy | Bishop of Chiusi e Pienza, Italy |
| 23.0 | Ordained Priest | Giannagostino Gradenigo, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Ceneda, Italy |
| 25 Jul | 47.7 | Ordained Bishop | Antonio Correale † | Bishop of Sora, Italy |
| 27 Jul | 47.1 | Resigned | Dario de Longhis † | Bishop of Syros (e Milos), Greece | Bishop Emeritus |
| 28 Jul | 22.9 | Ordained Priest | Antonius Maria Colonna, O.S.B. † | Priest of Order of Saint Benedict | Titular Bishop of Philadelphia in Arabia |
| 44.1 | Ordained Bishop | Ignazio Rovèro † | Bishop of Novara, Italy |
| 31 Jul | | Born | Sebastiano Alcaini, C.R.S. † | Venezia | Bishop of Belluno, Italy |
| 1 Aug | 55.2 | Died | Antonio Amat † | Bishop of Bosa, Italy |
| 5 Aug | | Born | Antonio Codronchi † | Imola | Archbishop of Ravenna, Italy |
| 7 Aug | | Born | Ján Révay † | Cachtice, Slovakia | Bishop of Spiš, Slovakia |
| 8 Aug | | Born | Luiz de Brito Homem † | Fundão | Bishop of São Luís do Maranhão, Brazil |
| 10 Aug | | Born | Michal Roman Sierakowski † | Twierdza | Auxiliary Bishop of Przemyśl, Poland |
| 11 Aug | 48.0 | Ordained Bishop | Diego Rojas Contreras † | Bishop of Calahorra y La Calzada, Spain | Bishop of Cartagena (en España) |
| 13 Aug | 63.6 | Died | Jérôme-Louis de Foudras de Courcenay † | Bishop of Poitiers, France |
| 18 Aug | 35.0 | Ordained Bishop | Antoine de Malvin de Montazet † | Bishop of Autun, France | Archbishop of Lyon, France |
| 21 Aug | | Born | Aurelio Roverella † | Cesena, Italy | Cardinal, Bishop of Palestrina, Italy |
| 25 Aug | | Born | Giuseppe Bartholomew Xerri † | Valletta | Bishop-Elect of Tyana |
| 28 Aug | | Appointed | John Brett, O.P. † | Bishop of Elphin, Ireland |
| 29 Aug | 55.9 | Resigned | Pietro Bonaventura Savini † | Bishop of Montalto (delle Marche), Italy | Bishop Emeritus |
| 1 Sep | 23.5 | Ordained Priest | Henry Benedict Mary Clement Stuart of York † | Priest | Cardinal, Bishop of Frascati, Italy |
| 2 Sep | | Died | Colman O’Shaughnessy, O.P. † | Bishop of Ossory, Ireland |
| 8 Sep | 23.2 | Ordained Priest | Baldassare de Moncada † | Priest | Bishop of San Marco (Argentano), Italy |
| 23.7 | Ordained Deacon | Stephanus Nagy † | Deacon | Auxiliary Bishop of Esztergom, Hungary |
| 16 Sep | 41.7 | Appointed | Paulus Campsi † | Bishop of Lezhë {Lesh, Alessio}, Albania |
| 57.2 | Appointed | Leonardo Cecconi † | Bishop of Montalto (delle Marche), Italy | Bishop Emeritus |
| 61.9 | Appointed | Francisco Izquierdo y Tavira, O.P. † | Bishop of Lugo, Spain |
| 46.7 | Appointed | Manuel Jiménez Bretón † | Bishop of Caracas, Santiago de Venezuela | Bishop-Elect |
| 41.7 | Ordained Bishop | Meletius Kovács † | Titular Bishop of Tegea | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 53.6 | Appointed | Jan Krasiński † | Auxiliary Bishop of Chełm, Poland |
| 53.6 | Appointed | Jan Krasiński † | Titular Bishop of Loryma | Auxiliary Bishop of Chełm, Poland |
| 40.7 | Appointed | Johann Friedrich von Lasser † | Auxiliary Bishop of Mainz, Germany |
| 40.7 | Appointed | Johann Friedrich von Lasser † | Titular Bishop of Lycopolis | Auxiliary Bishop of Mainz, Germany |
| 35.7 | Appointed | Joseph Rolin de Morel de Mons † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 55.9 | Appointed | Pietro Bonaventura Savini † | Titular Archbishop of Sebastea | Bishop Emeritus of Montalto (delle Marche), Italy |
| 23.5 | Appointed | Henry Benedict Mary Clement Stuart of York † | Cardinal-Priest of Santa Maria in Portico (Campitelli) | Cardinal, Bishop of Frascati, Italy |
| 65.5 | Appointed | Louis-François-Renaud de Villeneuve † | Bishop of Montpellier, France |
| 57.5 | Appointed | Anton Johann Wenzel Wokaun (Woknau) † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 57.5 | Appointed | Anton Johann Wenzel Wokaun (Woknau) † | Titular Bishop of Callinicum | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 18 Sep | 46.9 | Appointed | Pedro Antonio de Barroeta Angel † | Archbishop of Lima, Peru | Archbishop of Granada, Spain |
| 21 Sep | 24.2 | Ordained Priest | Jacques-Thomas Astesan, O.P. † | Priest of Order of Friars Preachers | Archbishop of Oristano, Italy |
| 57.2 | Ordained Bishop | Leonardo Cecconi † | Bishop of Montalto (delle Marche), Italy | Bishop Emeritus |
| 22.0 | Ordained Deacon | Joannes-Henricus von Frankenberg † | Deacon | Cardinal, Archbishop Emeritus of Mechelen, Belgium |
| 22.5 | Ordained Priest | Giovanni Ignazio Gautier † | Priest | Bishop of Iglesias, Italy |
| 22.6 | Ordained Priest | Mariano Zaralli, O.F.M. † | Priest of Order of Friars Minor | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 22 Sep | 50.2 | Ordained Bishop | Józef Pawłowski † | Titular Bishop of Niochensis | Auxiliary Bishop of Poznań, Poland |
| 24 Sep | 80.5 | Died | Francisco Antonio Cepeda Guerrero † | Bishop of Segorbe, Spain |
| 25 Sep | 54.0 | Died | Zsigmond József Berényi † | Bishop of Pécs, Hungary |
| 27 Sep | | Born | Bernardo Maria Cenicela, O.F.M. † | Guardia Sanframondi | Archbishop of Reggio Calabria, Italy |
| 28 Sep | 52.8 | Died | Bl. Francisco Serrano Frías, O.P. † | Vicar Apostolic of Fo-Kien, China |
| 29 Sep | 52.8 | Died | Jean-Charles de Ségur † | Bishop Emeritus of Saint-Papoul, France |
| 30 Sep | 66.8 | Died | José Sancho Granado † | Bishop of Salamanca, Spain |
| 6 Oct | 35.8 | Ordained Bishop | Joseph Rolin de Morel de Mons † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 7 Oct | 66.1 | Died | Michael Ignatius Frivaisz † | Titular Bishop of Germanicopolis |
| 12 Oct | 77.0 | Died | Francisco Gutiérrez Galeano, O. de M. † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 55.4 | Died | Bernardino Vari † | Bishop of Civita Castellana e Orte, Italy |
| 13 Oct | 23.1 | Ordained Priest | Giovanni Antonio Cossu, O.S.M. † | Priest of Order of Friar Servants of Mary | Bishop of Bosa, Italy |
| 23.0 | Ordained Priest | Ignaz Koller † | Priest | Bishop of Veszprém, Hungary |
| Born | Felix von Stubenberg † | Graz | Auxiliary Bishop of Eichstätt, Germany |
| 14 Oct | | Born | Mikolaj Bykowski, O.P. † | Wielisz | Titular Bishop of Troas |
| 17 Oct | | Born | Alfonso Cingari † | Bologna | Bishop of Cagli, Italy |
| 59.3 | Selected | Johann Friedrich Karl von Ostein † | Coadjutor Bishop of Worms, Germany | Archbishop of Mainz, Germany |
| 18 Oct | | Born | Karl Friedrich von Wendt † | Papenhausen | Auxiliary Bishop of Hildesheim, Germany |
| 20 Oct | 36.8 | Selected | Jean-Louis de La Marthonie de Caussade † | Bishop of Poitiers, France | Bishop of Meaux, France |
| 22 Oct | 76.0 | Died | Ferdinand Oesterhoff, O. Cist. † | Auxiliary Bishop Emeritus of Münster, Germany |
| 28 Oct | 33.1 | Ordained Priest | Benedictus Zuzzeri (Zuzeri) † | Priest | Archbishop of Sardica (Sredek, Sofia), Bulgaria |
| 29 Oct | 50.8 | Died | Ross Roe MacMahon (McMahon) † | Archbishop of Armagh, Ireland |
| Nov | | Born | Francisco Sisternes de Oblites † | Arboren | Archbishop of Oristano, Italy |
| 1 Nov | | Born | Juan Raimundo Santos Larumbe y Larrayoz † | Pamplona | Bishop of Tudela, Spain |
| 3 Nov | 53.8 | Ordained Bishop | Jan Krasiński † | Titular Bishop of Loryma | Auxiliary Bishop of Chełm, Poland |
| 7 Nov | 53.6 | Died | Bernardo Rodrigues Nogueira † | Bishop of São Paulo, Brazil |
| 8 Nov | | Born | Benedetto Sinibaldi † | Osimo, Italy | Titular Archbishop of Ephesus |
| 10 Nov | 62.1 | Ordained Bishop | Francisco Izquierdo y Tavira, O.P. † | Bishop of Lugo, Spain |
| Born | Lipót Perlaki Somogy † | Szent-Márton | Bishop of Szombathely, Hungary |
| 11 Nov | | Born | Joannes Petrus Martinus Pellegrini † | Ceneten | Titular Bishop of Palaeopolis in Asia |
| 13 Nov | 50.7 | Ordained Bishop | João de Azevedo † | Bishop of Portalegre, Portugal |
| 18 Nov | | Born | Karl Franz von Lodron † | Innsbruck | Bishop of Brixen {Bressanone}, Italy |
| 20 Nov | | Born | Eugenio Giovanni Battista Giuseppe Cerina, O.F.M. † | Cosia, Italy | Titular Bishop of Sergiopolis |
| 23 Nov | | Born | Jan Klemens Gołaszewski † | Tykocin | Bishop of Sejny o Sejna o Augustów, Poland |
| 28 Nov | 50.2 | Died | Giovanni Bufalini † | Bishop of Carinola (Calina), Italy |
| 30 Nov | 40.9 | Ordained Bishop | Johann Friedrich von Lasser † | Titular Bishop of Lycopolis | Auxiliary Bishop of Mainz, Germany |
| 1 Dec | 62.2 | Appointed | Sante Lanucci † | Bishop of Civita Castellana e Orte, Italy | Bishop Emeritus |
| 72.8 | Resigned | Nicola Preti Castriota † | Bishop of Vieste, Italy | Bishop Emeritus |
| 2 Dec | 30.9 | Confirmed | Jean-Baptiste-Joseph de Fontanges † | Bishop of Lavaur, France |
| 59.3 | Appointed | Pedro Gómez de la Torre † | Bishop of Ciudad Rodrigo, Spain | Bishop of Plasencia, Spain |
| 47.8 | Appointed | Johann Nikolaus (Febronius) von Hontheim † | Auxiliary Bishop of Trier, Germany |
| 47.8 | Appointed | Johann Nikolaus (Febronius) von Hontheim † | Titular Bishop of Myriophytos | Auxiliary Bishop of Trier, Germany |
| 41.0 | Appointed | Franjo Klobusiczky † | Bishop of Zagreb (Agram), Croatia | Archbishop of Kalocsa, Hungary |
| 49.5 | Appointed | Giovanni Battista Machin Espiga † | Bishop of Bosa, Italy |
| 66.3 | Appointed | Paul-Loup de Salières de Fosseran † | Bishop of Vaison, France |
| 6 Dec | 65.1 | Selected | Juan de Castañeda Velásquez y Salazar † | Bishop of Cuzco, Peru |
| 7 Dec | | Born | Andrés Ambrosio de Llanos y Valdés, O.F.M. † | Rueda, Spain | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| Born | Gregory Stapleton † | Carlton | Vicar Apostolic of Midland District, England, Great Britain |
| 8 Dec | 62.2 | Ordained Bishop | Sante Lanucci † | Bishop of Civita Castellana e Orte, Italy | Bishop Emeritus |
| 66.3 | Ordained Bishop | Paul-Loup de Salières de Fosseran † | Bishop of Vaison, France |
| 12 Dec | 30.9 | Ordained Bishop | Jean-Baptiste-Joseph de Fontanges † | Bishop of Lavaur, France |
| 14 Dec | | Born | Louis-François de Bausset-Roquefort † | Pondichéry, India | Cardinal, Bishop Emeritus of Alès (Alais), France |
| 15 Dec | | Born | Henri de Chambre d’Urgons † | Tartas | Auxiliary Bishop of Metz, France |
| 16 Dec | 41.8 | Appointed | Andrés Cano y Junquera † | Auxiliary Bishop of Sigüenza, Spain |
| 41.8 | Appointed | Andrés Cano y Junquera † | Titular Bishop of Arad | Auxiliary Bishop of Sigüenza, Spain |
| 36.7 | Appointed | Nicola Cimaglia, O.S.B. † | Bishop of Vieste, Italy |
| 55.0 | Appointed | Jean-François Dondel † | Bishop of Dol, France |
| 40.2 | Confirmed | Leopold Ernst von Firmian † | Coadjutor Bishop of Trento, Italy | Cardinal, Bishop of Passau, Germany |
| Appointed | Florianus Hrebnicki † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 40.4 | Appointed | Heinrich Joseph von Nitschke † | Auxiliary Bishop of Bamberg, Germany |
| 40.4 | Appointed | Heinrich Joseph von Nitschke † | Titular Bishop of Antipatris | Auxiliary Bishop of Bamberg, Germany |
| 17 Dec | | Appointed | James Bernard Dunne † | Bishop of Ossory, Ireland |
| 19 Dec | 50.8 | Installed | João de Azevedo † | Bishop of Portalegre, Portugal |
| 20 Dec | 91.7 | Died | José Espejo Cisneros † | Bishop Emeritus of Calahorra y La Calzada, Spain |
| 21 Dec | 37.3 | Ordained Priest | Henricus Celaja † | Priest | Bishop of Oria, Italy |
| 36.7 | Ordained Bishop | Nicola Cimaglia, O.S.B. † | Bishop of Vieste, Italy |
| 26.0 | Ordained Priest | Guillaume Piguel, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Cochin {Cocincina}, Viet Nam |
| 27.0 | Ordained Priest | Bertrand Reydellet, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 22 Dec | 23.0 | Ordained Priest | Nicola Filomarini (Filomarino), O.S.B. † | Priest of Order of Saint Benedict | Bishop of Caserta, Italy |
| 28 Dec | 86.9 | Died | Johann Adam Nieberlein † | Auxiliary Bishop of Eichstätt, Germany |
| 29 Dec | 24.0 | Ordained Priest | Stephanus Nagy † | Priest | Auxiliary Bishop of Esztergom, Hungary |
| 31 Dec | | Born | Salvatore de Luca † | Terra di Mugnano | Bishop of Carinola (Calina), Italy |