| Date | Age | Event | Bishop | Title | Current Title |
|---|
| 2 Sep | 53.8 | Died | Bl. Jean-Marie du Lau d’Allemans † | Archbishop of Arles, France |
| 56.5 | Died | Bl. Fran輟is-Joseph de La Rochefoucauld-Bayers † | Bishop of Beauvais, France |
| 47.8 | Died | Bl. Pierre-Louis de La Rochefoucauld-Bayers † | Bishop of Saintes, France |
| 6 Sep | Born | Mario Mattei † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 7 Sep | 71.8 | Died | [Joseph Pouchot] † | Bishop of [Is鑽e (Constitutional), France] |
| 8 Sep | 25.9 | Ordained Deacon | Leopold Maximilian von Firmian (Frimian) † | Deacon of Salzburg, Austria | Archbishop of Wien {Vienna}, Austria |
| 9 Sep | 58.7 | Died | Jean-Arnauld de Castellane † | Bishop of Mende, France |
| 74.9 | Died | Bernardo Pinto Ribeiro Seixas † | Bishop of Bragan軋 e Miranda, Portugal |
| 15 Sep | Born | Dominco Savelli † | Cardinal, Priest of the Roman Curia - Other |
| 21 Sep | 72.3 | Resigned | Jos? Gregorio Alonso de Ortigosa † | Bishop of Antequera, Oaxaca, M騙ico | Bishop Emeritus |
| 22 Sep | 28.6 | Ordained Priest | Luca Amici † | Priest | Bishop of Ferentino, Italy |
| 23.5 | Ordained Priest | Salvatore de Luca † | Priest | Archbishop of Rossano, Italy |
| 23 Sep | 25.9 | Ordained Priest | Leopold Maximilian von Firmian (Frimian) † | Priest of Salzburg, Austria | Archbishop of Wien {Vienna}, Austria |
| 24 Sep | 53.5 | Appointed | Gregorio Jos? de Oma?a y Sotomayor † | Bishop of Antequera, Oaxaca, M騙ico |
| 53.9 | Appointed | Giambenedetto (Angelo) Falier, O.S.B. † | Bishop of Ceneda, Italy |
| 45.5 | Appointed | Giovanni Filippo Gallarati Scotti † | Titular Archbishop of Side | Cardinal, Cardinal-Priest of San Lorenzo in Lucina |
| 56.7 | Appointed | Giuseppe Graziosi † | Auxiliary Bishop of Palestrina, Italy |
| 56.7 | Appointed | Giuseppe Graziosi † | Titular Bishop of Anastasiopolis | Auxiliary Bishop of Palestrina, Italy |
| 60.1 | Confirmed | Nikolaus Kond? de P?ka-Telek † | Bishop of Beograd (-Smederevo), Serbia | Bishop of Oradea Mare {Gran Varadino, Nagyv疵ad}, Romania |
| 36.2 | Confirmed | Fran輟is Antoine Marie Constantin de M饌n et de Beaurieux † | Bishop of Li鑒e, Belgium | Archbishop of Mechelen, Belgium |
| 54.8 | Appointed | Ignacio de Salamanca † | Bishop of Cebu, Philippines |
| 46.8 | Appointed | Juan Antonio Viana, O.C.D. † | Bishop of Caracas, Santiago de Venezuela | Bishop of Almer?a, Spain |
| 46.8 | Confirmed | Pietro Antonio Zorzi, C.R.S. † | Cardinal, Archbishop of Udine, Italy |
| 28 Sep | 66.5 | Died | Fran輟is Pottier, M.E.P. † | Vicar Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China |
| 49.6 | Succeeded | Jean-Didier de Saint Martin, M.E.P. † | Vicar Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China |
| 30 Sep | 53.9 | Ordained Bishop | Giambenedetto (Angelo) Falier, O.S.B. † | Bishop of Ceneda, Italy |
| 56.7 | Ordained Bishop | Giuseppe Graziosi † | Titular Bishop of Anastasiopolis | Auxiliary Bishop of Palestrina, Italy |
| 40.3 | Ordained Bishop | Jacques-Benjamin Longer, M.E.P. † | Titular Bishop of Gortyna | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| Oct | 53.9 | Died | Giacinto Ignazio Pellegrini, O.P. † | Bishop of Krk (Veglia), Croatia |
| 2 Oct | 78.5 | Resigned | Domenico Morelli † | Bishop of Strongoli, Italy | Bishop Emeritus |
| 11 Oct | Born | Anthony Blanc † | Archbishop of New Orleans, Louisiana, USA |
| 14 Oct | 43.5 | Ordained Bishop | Thomas Bray † | Archbishop of Cashel (-Emly), Ireland |
| 15 Oct | 48.8 | Died | Cayetano Pe?a Granada † | Bishop of Huesca, Spain |
| 17 Oct | Born | Giuseppe Luca Barranco, O. de M. † | Auxiliary Bishop-Elect of Arequipa, Peru |
| 19 Oct | Born | Pietro Vargi? † | Bishop of Ales e Terralba, Italy |
| 31 Oct | 60.2 | Died | Francesco Vincenzo Lajezza † | Bishop of Marsi, Italy |
| Nov | 54.9 | Appointed | Henri Reymond † | Bishop of [Is鑽e (Constitutional), France] | Bishop of Dijon, France |
| 1 Nov | Born | Luigi Ferrari † | Bishop of Modena (e Nonantola), Italy |
| 2 Nov | 76.5 | Died | Antonio Puoti † | Archbishop of Amalfi, Italy |
| Born | Engelbert Sterckx † | Cardinal, Archbishop of Mechelen, Belgium |
| 4 Nov | Born | Charles-Hubert Jeantet, M.E.P. † | Coadjutor Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 6 Nov | 33.9 | Selected | Ant?nio Lu?s da Veiga Cabral e C穃ara † | Bishop of Bragan軋 e Miranda, Portugal |
| 11 Nov | 23.0 | Ordained Priest | J疣os Horv疸h † | Priest | Bishop of Sz駝esfeh駻v疵 (Albareale), Hungary |
| 12 Nov | 70.8 | Died | Fran輟is de Narbonne-Lara † | Bishop of ノvreux, France |
| 22 Nov | 64.3 | Selected | Pasquale Petruccelli † | Bishop of Strongoli, Italy |
| 23 Nov | Born | Gioacchino Antonelli † | Bishop of Fiesole, Italy |
| 26 Nov | 67.5 | Died | Johann Heinrich von Kerens, S.J. † | Bishop of Sankt P?lten, Austria |
| 1 Dec | 52.0 | Resigned | Jos? P駻ez Calama † | Bishop of Quito, Ecuador | Bishop Emeritus |
| 3 Dec | 58.1 | Appointed | Miguel チlvarez Cort駸 † | Bishop of Cartagena, Colombia | Bishop of Quito, Ecuador |
| Born | Emmanuele Francesco Barrutia y Croquer † | Auxiliary Bishop of Guatemala |
| 50.6 | Confirmed | Orazio della Torre † | Bishop of Mazara del Vallo, Italy |
| 37.2 | Appointed | Joaqu?n de Os駸 y Alz?a y Caparacio † | Bishop of Santiago de Cuba | Archbishop of Santiago de Cuba |
| 63.4 | Appointed | Jos? D?az de Lamadrid, O.F.M. Obs. † | Bishop of Quito, Ecuador |
| 52.1 | Appointed | Alfonso Marsili † | Archbishop of Siena, Italy |
| 38.1 | Appointed | Ivan Antun Sintić † | Bishop of Krk (Veglia), Croatia |
| 25.9 | Appointed | Antoine Casimir Lib鑽e de Stockem † | Auxiliary Bishop of Li鑒e, Belgium |
| 25.9 | Appointed | Antoine Casimir Lib鑽e de Stockem † | Titular Bishop of Canopus | Auxiliary Bishop of Li鑒e, Belgium |
| 64.9 | Appointed | Manel Mar?a Trujillo Jurado, O.F.M. Obs. † | Bishop of Albarracin, Spain | Bishop Emeritus |
| 55.6 | Appointed | Francesco Saverio de Vita † | Titular Bishop of Philomelium |
| 5 Dec | Born | Francesco Spalletti † | Bishop of Nepi e Sutri, Italy |
| 9 Dec | 50.6 | Ordained Bishop | Orazio della Torre † | Bishop of Mazara del Vallo, Italy |
| 60.4 | Ordained Bishop | Nikolaus Kond? de P?ka-Telek † | Bishop of Beograd (-Smederevo), Serbia | Bishop of Oradea Mare {Gran Varadino, Nagyv疵ad}, Romania |
| 52.1 | Ordained Bishop | Alfonso Marsili † | Archbishop of Siena, Italy |
| 38.1 | Ordained Bishop | Ivan Antun Sintić † | Bishop of Krk (Veglia), Croatia |
| 11 Dec | 73.2 | Died | Antonino Cavaleri † | Bishop of Agrigento (Girgenti), Italy |
| 21 Dec | Born | Giuseppe Maria Severa † | Bishop of Terni, Italy |
| 23 Dec | 47.2 | Ordained Bishop | Remigio de La Santa y Ortega † | Bishop of Panam? | Bishop of L駻ida, Spain |
| 25 Dec | Born | John Cantwell † | Bishop of Meath, Ireland |
| 26 Dec | 44.1 | Resigned | [Pierre Matthieu Joubert] † | Bishop of [Charente (Constitutional), France] | Bishop Emeritus |
| 27 Dec | 54.8 | Died | Erasmus Dionys Krieger † | Auxiliary Bishop of Praha {Prague}, Czechia |