| Date | Age | Event | Bishop | Title | Current Title |
| 1 Sep | 18.0 | Professed | Joseph Antoine Cocatrix, C.R.A. † | Member of Swiss Congregation of Canons Regular of Saint Maurice of Agaune | Abbot of Saint-Maurice, Switzerland |
| 23.4 | Ordained Priest | Henry Benedict Mary Clement Stuart of York † | Priest | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 2 Sep | 73.6 | Died | Colman O’Shaughnessy, O.P. † | Bishop of Ossory, Ireland |
| 8 Sep | 23.2 | Ordained Priest | Baldassare Barone de Moncada † | Priest | Bishop of San Marco (Argentano), Italy |
| 22.7 | Ordained Deacon | István Nagy † | Deacon | Auxiliary Bishop of Esztergom, Hungary |
| 10 Sep | 49.2 | Selected | Giovanni Battista Machín Spiga † | Bishop of Bosa, Italy |
| 11 Sep | 22.6 | Ordained Priest | Mariano Zaralli, O.F.M. Obs. † | Priest of Order of Observant Friars Minor | Vicar Apostolic of Hukwang, Shansi [Shanxi], and Shensi [Shaanxi], China |
| 16 Sep | 46.8 | Confirmed | Pedro Antonio de Barroeta Angel † | Archbishop of Lima, Peru | Archbishop of Granada, Spain |
| 41.7 | Appointed | Paulus Campsi † | Bishop of Lezhë {Lesh, Alessio}, Albania |
| 57.1 | 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 | Appointed | Meletius Kovács † | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 41.7 | Appointed | Meletius Kovács † | Titular Bishop of Tegea | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 41.7 | Ordained Bishop | Meletius Kovács † | Titular Bishop of Tegea | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 53.6 | Appointed | Jan Chryzostom Krasiński † | Auxiliary Bishop of Chełm, Poland |
| 53.6 | Appointed | Jan Chryzostom Krasiński † | Titular Bishop of Loryma | Auxiliary Bishop of Chełm, Poland |
| 40.6 | Appointed | Johann Friedrich von Lasser † | Auxiliary Bishop of Mainz, Germany |
| 40.6 | Appointed | Johann Friedrich von Lasser † | Titular Bishop of Lycopolis | Auxiliary Bishop of Mainz, Germany |
| 33.4 | Confirmed | 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, Cardinal-Bishop of Ostia (e Velletri) |
| 65.4 | Confirmed | Louis-François-Renaud de Villeneuve † | Bishop of Montpellier, France |
| 57.5 | Appointed | Antonín Jan Václav (Anton Johann Wenzel) Vokoun (Wokaun) † | Auxiliary Bishop of Praha {Prague}, Czechia |
| 57.5 | Appointed | Antonín Jan Václav (Anton Johann Wenzel) Vokoun (Wokaun) † | Titular Bishop of Callinicum | Auxiliary Bishop of Praha {Prague}, Czechia |
| 18 Sep | | Born | Gabriel-Melchior de Messey † | | Bishop of Valence, France |
| 21 Sep | 24.1 | Ordained Priest | Jacques-Thomas Astesan, O.P. † | Priest of Order of Friars Preachers | Archbishop of Oristano, Italy |
| 57.1 | 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 Sep | 50.1 | 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 | Giuseppe Maria Cenicela, O.F.M. Disc. † | | Archbishop of Reggio Calabria, Italy |
| 28 Sep | | Ordained Bishop | Antonios Mhasseb † | Bishop of Jbeil {Byblos} (Maronite), Lebanon |
| 29 Sep | 18.9 | Ordained Priest | Gherardo Cortenovis, B. † | Priest of Clerics Regular of St. Paul | Vicar Apostolic of Ava e Pegů, Myanmar |
| 52.7 | Died | Jean-Charles de Ségur † | Bishop Emeritus of Saint-Papoul, France |
| 32.9 | Ordained Deacon | Benedetto Zuzzeri (Zuzeri) † | Deacon | Archbishop of Sardica (Sredek, Sofia), Bulgaria |
| 30 Sep | 66.8 | Died | José Sancho Granado † | Bishop of Salamanca, Spain |
| 6 Oct | 33.4 | Ordained Bishop | Joseph Rolin de Morel de Mons † | Bishop of Viviers (Aps), France | Bishop Emeritus |
| 7 Oct | 66.0 | Died | Michael Ignatius Frivaisz † | Auxiliary Bishop of Esztergom, Hungary |
| 59.2 | Selected | Johann Friedrich Karl von Ostein † | Coadjutor Bishop of Worms, Germany | Archbishop of Mainz, Germany |
| 12 Oct | 77.0 | Died | Francisco Gutiérrez Galeano, O. de M. † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 90.7 | Died | Jeronim Ustryckyj † | Bishop Emeritus of Przemyśl, Sambor, et Sanok (Ukrainian), Poland |
| 55.3 | Died | Bernardino Vari † | Bishop of Civita Castellana e Orte, Italy |
| 13 Oct | 23.3 | 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 † | | Auxiliary Bishop of Eichstätt, Germany |
| 14 Oct | | Born | Mikołaj Bykowski, O.P. † | | Titular Bishop of Troas |
| 16 Oct | 57.6 | Ordained Bishop | Antonín Jan Václav (Anton Johann Wenzel) Vokoun (Wokaun) † | Titular Bishop of Callinicum | Auxiliary Bishop of Praha {Prague}, Czechia |
| 17 Oct | | Born | Alfonso Cingari † | | Bishop of Cagli, Italy |
| 18 Oct | | Born | Karl Friedrich von Wendt † | | 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 | 75.9 | Died | Ferdinand Oesterhoff, O. Cist. † | Auxiliary Bishop Emeritus of Münster, Germany |
| 28 Oct | 52.8 | Died | St. Francesco Serrano Frías, O.P. † | Vicar Apostolic of Fukien (Kuiceu), China |
| 33.0 | Ordained Priest | Benedetto Zuzzeri (Zuzeri) † | Priest | Archbishop of Sardica (Sredek, Sofia), Bulgaria |
| 29 Oct | 50.8 | Died | Ross Roe MacMahon (McMahon) † | Archbishop of Armagh, Ireland |
| 1 Nov | | Born | Juan Raimundo Santos Larumbe y Larrayoz † | | Bishop of Tudela, Spain |
| 3 Nov | 50.8 | Ordained Bishop | Joăo de Azevedo † | Bishop of Portalegre, Portugal |
| 53.7 | Ordained Bishop | Jan Chryzostom Krasiński † | Titular Bishop of Loryma | Auxiliary Bishop of Chełm, Poland |
| 7 Nov | 53.5 | Died | Bernardo Rodrigues Nogueira † | Bishop of Săo Paulo, Brazil |
| 8 Nov | | Born | Benedetto Sinibaldi † | | Titular Archbishop of Ephesus |
| 10 Nov | 62.0 | Ordained Bishop | Francisco Izquierdo y Tavira, O.P. † | Bishop of Lugo, Spain |
| Born | Lipót Perlaki Somogy † | | Bishop of Szombathely, Hungary |
| 11 Nov | | Born | Giovanni Pietro Martino Pellegrini † | | Auxiliary Bishop of Udine, Italy |
| Born | Francisco Sisternes de Oblites † | | Archbishop of Oristano, Italy |
| 16 Nov | | Born | [Pierre Matthieu Joubert] † | | Bishop Emeritus of [Charente (Constitutional), France] |
| 18 Nov | | Born | Karl Franz von Lodron † | | Bishop of Brixen {Bressanone}, Italy |
| 20 Nov | | Born | Eugenio Giovanni Battista Giuseppe Cerina, O.F.M. Obs. † | | Titular Bishop of Sergiopolis |
| 48.8 | Selected | James Bernard Dunne † | Bishop of Ossory, Ireland |
| 50.8 | Selected | Mark Skerret † | Bishop of Killala, Ireland | Archbishop of Tuam, Ireland |
| 23 Nov | | Born | Jan Klemens Gołaszewski † | | Bishop of Sejny o Sejna o Augustów, Poland |
| 28 Nov | 50.1 | Died | Giovanni Bufalini † | Bishop of Carinola (Calina), Italy |
| 30 Nov | 40.8 | Ordained Bishop | Johann Friedrich von Lasser † | Titular Bishop of Lycopolis | Auxiliary Bishop of Mainz, Germany |
| 1 Dec | 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 | Confirmed | Franjo Klobusiczky † | Bishop of Zagreb (Agram), Croatia | Archbishop of Kalocsa, Hungary |
| 62.1 | Appointed | Sante Lanucci † | Bishop of Civita Castellana e Orte, Italy | Bishop Emeritus |
| 49.4 | Confirmed | Giovanni Battista Machín Spiga † | Bishop of Bosa, Italy |
| 66.2 | Appointed | Paul-Loup de Salličres de Fausseran † | Bishop of Vaison, France |
| 6 Dec | 65.0 | Selected | Juan de Castańeda Velásquez y Salazar † | Bishop of Cuzco, Peru |
| Born | [Léonard Honoré Gay de Vernon] † | | Bishop Emeritus of [Haute-Vienne (Constitutional), France] |
| 7 Dec | | Born | Ambrosio Llano † | | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| Born | Gregory Stapleton † | | 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 |
| 66.2 | Ordained Bishop | Paul-Loup de Salličres de Fausseran † | Bishop of Vaison, France |
| 12 Dec | | Born | Athanasius Saraff † | | Titular Bishop of Theodosiopolis in Armenia |
| 13 Dec | | Born | [Noël-Gabriel-Luce de Villar] † | | Bishop Emeritus of [Mayenne (Constitutional), France] |
| 14 Dec | | Born | Louis-François de Bausset-Roquefort † | | Cardinal, Bishop Emeritus of Alčs (Alais), France |
| 16 Dec | 41.7 | Appointed | Andrés Cano y Junquera † | Auxiliary Bishop of Sigüenza, Spain |
| 41.7 | 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 |
| 54.9 | Confirmed | Jean-François Dondel † | Bishop of Dol, France |
| 40.2 | Confirmed | Leopold Ernst von Firmian † | Coadjutor Bishop of Trento, Italy | Cardinal, Bishop of Passau, Germany |
| 65.9 | Confirmed | Florian Franciszek Hrebnicki, O.S.B.M. † | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 40.3 | Appointed | Heinrich Joseph von Nitschke † | Auxiliary Bishop of Bamberg, Germany |
| 40.3 | Appointed | Heinrich Joseph von Nitschke † | Titular Bishop of Antipatris | Auxiliary Bishop of Bamberg, Germany |
| 17 Dec | 48.9 | Confirmed | James Bernard Dunne † | Bishop of Ossory, Ireland |
| 19 Dec | 50.9 | Installed | Joăo de Azevedo † | Bishop of Portalegre, Portugal |
| 20 Dec | 91.7 | Died | José Espejo y Cisneros † | Bishop Emeritus of Calahorra y La Calzada, Spain |
| 21 Dec | 37.3 | Ordained Priest | Enrico Celaja † | Priest | Bishop of Oria, Italy |
| 36.7 | Ordained Bishop | Nicola Cimaglia, O.S.B. † | Bishop of Vieste, Italy |
| 23.6 | Ordained Deacon | Florian Amand Janowski, O.S.B. † | Deacon of Order of Saint Benedict | Bishop of Tarnów, Poland |
| 26.0 | Ordained Priest | Guillaume Piguel, M.E.P. † | Priest of La Société des Missions Etrangčres | Vicar Apostolic of Cochin {Cocincina}, Viet Nam |
| 26.9 | Ordained Priest | Bertrand Reydellet, M.E.P. † | Priest of La Société des Missions Etrangčres | 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 |
| 30.9 | Ordained Bishop | Jean-Baptiste-Joseph de Fontanges † | Bishop of Lavaur, France |
| 23 Dec | 58.9 | Selected | Michael O’Reilly † | Archbishop of Armagh, Ireland |
| 28 Dec | 86.8 | Died | Johann Adam Nieberlein † | Auxiliary Bishop Emeritus of Eichstätt, Germany |
| 29 Dec | 23.0 | Ordained Priest | István Nagy † | Priest | Auxiliary Bishop of Esztergom, Hungary |
| 31 Dec | | Born | Salvatore de Lucia † | | Bishop of Carinola (Calina), Italy |