| Date | Age | Event | Bishop | Title | Current Title |
| Sep | 51.7 | Died | Carolus Poninski † | Auxiliary Bishop of Poznań, Poland |
| 5 Sep | 53.6 | Died | Stephan Cloth, O.S.B. † | Auxiliary Bishop of Fulda, Germany |
| 7 Sep | | Born | Alvise Maria Gabrieli † | Venezia | Bishop of Vicenza, Italy |
| 9 Sep | 36.0 | Professed | Giovanni Battista Baratta, C.O. † | Priest of Confederation of Oratorians of St. Philip Neri | Bishop of Novara, Italy |
| 12 Sep | 64.7 | Died | Emanuele Spinelli d’Acquaro, C.R. † | Bishop of Catanzaro, Italy |
| 13 Sep | | Died | Pierre-Guillaume de La Vieuxville-Pourpris † | Bishop of Saint-Brieuc, France |
| 14 Sep | | Born | Francesco Mantica † | Rome | Cardinal, Cardinal-Priest of Santa Prisca |
| 16 Sep | | Appointed | Alexander John Grant † | Vicar Apostolic of Highland District, Scotland, Great Britain |
| Appointed | Alexander John Grant † | Titular Bishop of Sura | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 19 Sep | 76.1 | Died | Carlo Agostino Fabroni † | Cardinal, Cardinal-Priest of Sant’Agostino |
| Died | Alexander John Grant † | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 20 Sep | | Born | Eustaquio Azara, O.S.B. † | Barbuñales | Bishop of Barcelona, Spain |
| 22.9 | Ordained Priest | Antonio De Cumis † | Priest | Bishop of Catanzaro, Italy |
| 25.6 | Ordained Priest | Giuseppe Antonio Passanti † | Priest | Bishop of Montemarano, Italy |
| 23.4 | Ordained Priest | Pierre François de Sales de Thorens † | Priest | Bishop of Aosta, Italy |
| 21 Sep | 69.9 | Ordained Bishop | Raymond Recrosio, B. † | Bishop of Nice, France |
| 80.7 | Resigned | Jean Soanen † | Bishop of Senez, France |
| 22 Sep | 43.7 | Confirmed | Jean-Louis Berton des Balbes de Crillon † | Archbishop of Toulouse, France | Archbishop of Narbonne, France |
| 28 Sep | 47.7 | Ordained Bishop | Thomas John Francis de Strickland de Sizorghe † | Bishop of Namur {Namen}, Belgium |
| 29 Sep | 23.6 | Ordained Priest | Franz Joseph Friedrich Ambuel † | Priest of Sion {Sitten}, Switzerland | Bishop |
| 27.9 | Ordained Priest | Caietanus de Carli † | Priest | Bishop of Rieti, Italy |
| Oct | 70.7 | Died | Pietro Antonio Pietrasanta, B. † | Bishop of Martirano (Martoranum), Italy |
| Born | Michael Zorawski † | Zawidzen | Titular Bishop of Thespiae |
| 1 Oct | 41.9 | Appointed | Domenico Rossi (Rosso e Colonna), O.S.B. † | Bishop of Catanzaro, Italy | Archbishop of Palermo, Italy |
| 42.8 | Appointed | Giovanni Battista Rotario da Pralormo (Rovero) † | Bishop of Acqui, Italy | Cardinal, Archbishop of Torino {Turin}, Italy |
| Born | Jean-Marc de Royére † | Périgord | Bishop Emeritus of Castres, France |
| 55.9 | Appointed | Giovanni Domenico Xiberras, O.S.Io.Hieros. † | Titular Bishop of Epiphania in Syria |
| 3 Oct | | Born | Ignazio Koller † | Vienna | Bishop of Veszprém, Hungary |
| 4 Oct | 48.4 | Selected | Leopold Anton Eleutherius von Firmian † | Archbishop of Salzburg, Austria |
| Born | Francisco Matienzo † | Plata | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 5 Oct | 41.9 | Ordained Bishop | Domenico Rossi (Rosso e Colonna), O.S.B. † | Bishop of Catanzaro, Italy | Archbishop of Palermo, Italy |
| 6 Oct | 23.2 | Ordained Priest | Pietro Cristiani † | Priest | Bishop of Piacenza, Italy |
| 23.2 | Ordained Priest | Giovanni Battista Sandi † | Priest | Bishop of Belluno, Italy |
| 9 Oct | | Born | Etienne-Charles de Loménie de Brienne † | Paris | Cardinal, Archbishop of Sens, France |
| 12 Oct | 76.8 | Died | Emmanuel da Silva Frances † | Auxiliary Bishop of Lisboa {Lisbon}, Portugal |
| 42.9 | Ordained Bishop | Giovanni Battista Rotario da Pralormo (Rovero) † | Bishop of Acqui, Italy | Cardinal, Archbishop of Torino {Turin}, Italy |
| 19 Oct | | Died | Pierre-Joseph de Francken-Sierstoff † | Bishop of Antwerpen {Antwerp, Anvers}, Belgium |
| 23.0 | Ordained Priest | Celestino Orlandi, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Molfetta, Italy |
| 55.9 | Ordained Bishop | Giovanni Domenico Xiberras, O.S.Io.Hieros. † | Titular Bishop of Epiphania in Syria |
| 20 Oct | 40.8 | Selected | Louis-François de Vivet de Montclus † | Bishop of Saint-Brieuc, France | Bishop of Alès (Alais), France |
| 29 Oct | 45.8 | Died | Ioan Constantin Giurgiu Patachi (Nemes de Pataky), O.S.B.M. † | Bishop of Făgăraş (Romanian), Romania |
| 4 Nov | 75.8 | Died | Baltasar de Mendoza y Sandoval † | Bishop of Segovia, Spain |
| 5 Nov | 63.8 | Died | José de Talavera Gómez de Eugenio, O.S.H. † | Bishop of Valladolid, Spain |
| 9 Nov | 27.2 | Ordained Bishop | Clemens August Maria von Bayern † | Archbishop of Köln {Cologne}, Germany |
| 13 Nov | | Born | Guglielmo Pallotta † | Macerata | Cardinal, Prefect of the Congregation of the Council |
| 16 Nov | 29.1 | Ordained Bishop | Michal Ignacy Kunicki † | Titular Bishop of Arsinoë in Arcadia | Auxiliary Bishop of Kraków, Poland |
| 17 Nov | 71.9 | Died | François Gaspard de Grammont † | Auxiliary Bishop of Besançon, France |
| 64.9 | Died | François de Valbelle de Tourves † | Bishop of Saint-Omer, France |
| 38.9 | Succeeded | Joseph-Alphonse de Valbelle de Tourves † | Bishop of Saint-Omer, France |
| 19 Nov | 63.0 | Died | André Dreuilhet (Drouillet) † | Bishop of Bayonne, France |
| 20 Nov | | Born | Gaetano Maria Garrasi, O.S.A. † | Catanien | Archbishop of Messina, Italy |
| 26 Nov | 61.1 | Elevated to Cardinal | Diego Astorga y Céspedes † | Cardinal, Archbishop of Toledo, Spain |
| 48.8 | Appointed | Cristoforo Lorenzo Baratta † | Bishop of Fossano, Italy |
| 45.9 | Appointed | Juraj Branjug † | Bishop of Zagreb (Agram), Croatia |
| 36.7 | Appointed | Pierre-Herman Dosquet, P.S.S. † | Auxiliary Bishop of Québec, Canada | Bishop Emeritus |
| 36.7 | Appointed | Pierre-Herman Dosquet, P.S.S. † | Titular Bishop of Samos | Bishop Emeritus of Québec, Canada |
| 60.3 | Appointed | Saverio Ferrari † | Bishop of Martirano (Martoranum), Italy |
| 51.5 | Appointed | Sigismund Kollonitsch † | Cardinal-Priest of Santi Marcellino e Pietro | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 51.5 | Elevated to Cardinal | Sigismund Kollonitsch † | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 60.3 | Appointed | VIncenzo Maria Mazzoleni, O.P. † | Archbishop of Corfù, Greece | Bishop of Poreč (Parenzo), Croatia |
| 42.3 | Elevated to Cardinal | João de Motta e Silva † | Cardinal, Cardinal-Priest |
| 47.7 | Elevated to Cardinal | Angelo Maria Quirini (Querini), O.S.B. † | Cardinal, Bishop of Brescia, Italy |
| 58.8 | Appointed | Giacomo Rambert † | Bishop of Aosta, Italy |
| 28.4 | Elevated to Cardinal | Philipp Ludwig von Sinzendorf † | Cardinal, Bishop of Wrocław (Breslau), Poland |
| 63.7 | Appointed | Manuel Tercero Rozas, O.S.A. † | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 63.7 | Appointed | Manuel Tercero Rozas, O.S.A. † | Titular Bishop of Icosium | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 42.1 | Appointed | Costantino Vigilante † | Bishop of Caiazzo, Italy |
| 28 Nov | 62.1 | Appointed | Raimundo Rubí, O. Cart. † | Bishop of Catania, Italy |
| 30 Nov | 48.8 | Ordained Bishop | Cristoforo Lorenzo Baratta † | Bishop of Fossano, Italy |
| 58.8 | Ordained Bishop | Giacomo Rambert † | Bishop of Aosta, Italy |
| 30.7 | Ordained Bishop | Ferdinand Joseph Gabriel von Sarnthein † | Titular Bishop of Hypsus | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 4 Dec | 62.9 | Installed | Luis Francisco Romero † | Archbishop of La Plata o Charcas, Bolivia |
| 7 Dec | 60.3 | Ordained Bishop | VIncenzo Maria Mazzoleni, O.P. † | Archbishop of Corfù, Greece | Bishop of Poreč (Parenzo), Croatia |
| 8 Dec | 62.1 | Ordained Bishop | Raimundo Rubí, O. Cart. † | Bishop of Catania, Italy |
| 9 Dec | | Born | Giuseppe Anton Maria Corte, O.S.A. † | Dogliani | Bishop of Mondovi, Italy |
| 45.0 | Died | Luigi Maria Macedonio, C.M. † | Bishop of Sessa Aurunca, Italy |
| 11 Dec | 76.1 | Died | Seweryn Szczuka † | Auxiliary Bishop of Chelmno (Culma, Kulm), Poland |
| 12 Dec | | Born | José Constancio Andino † | Villarcayo | Bishop of Osma, Spain |
| Born | Gregorio Antonio Maria Salviati † | Rome | Cardinal, Cardinal-Deacon of Santa Maria in Via Lata |
| 14 Dec | 60.4 | Ordained Bishop | Saverio Ferrari † | Bishop of Martirano (Martoranum), Italy |
| 15 Dec | 57.7 | Died | Pantaleon Bruns, O.S.B. † | Auxiliary Bishop of Paderborn, Germany |
| 18 Dec | 60.1 | Died | Dominique-Barnabé Turgot de Saint-Clair † | Bishop of Sées, France |
| 67.0 | Resigned | Michele Gallo Vandeinde † | Bishop of Capri, Italy | Bishop Emeritus |
| 20 Dec | 26.2 | Ordained Priest | Giovanni Anzani † | Priest | Bishop of Satriano e Campagna, Italy |
| 23.1 | Ordained Priest | Lodovico Agostino Bertozzi † | Priest | Bishop of Cagli, Italy |
| 24.2 | Ordained Priest | Niccola Maria Calcagnini † | Priest | Bishop of Città Ducale, Italy |
| 24.5 | Ordained Priest | José Dantas Barbosa † | Priest | Auxiliary Bishop of Lisboa {Lisbon}, Portugal |
| 23.5 | Ordained Priest | Marco De Simone † | Priest | Bishop of Troia, Italy |
| 22.9 | Ordained Priest | Michele Scavo † | Priest | Bishop of Mazara del Vallo, Italy |
| 52.0 | Ordained Priest | Raniero Felice Simonetti † | Priest | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 21 Dec | 48.6 | Succeeded | Giovanni Girolamo della Torre, B. † | Bishop of Luni e Sarzana, Italy |
| 23.5 | Ordained Priest | Ignazio Rovèro † | Priest | Bishop of Novara, Italy |
| 82.3 | Died | Ambrogio Spinola, B. † | Bishop of Luni e Sarzana, Italy |
| 42.2 | Ordained Bishop | Costantino Vigilante † | Bishop of Caiazzo, Italy |
| 22 Dec | 49.9 | Appointed | Giovanni Bortone † | Titular Bishop of Diospolis in Thracia |
| 42.4 | Confirmed | Giovanni Fabrizio de Capua † | Archbishop of Taranto, Italy | Archbishop of Salerno, Italy |
| 58.3 | Appointed | Tommaso Di Grazia † | Bishop of Castellammare di Stabia, Italy |
| 55.1 | Appointed | Giovanni Maria de Laurentiis, O. Carm. † | Bishop of Capri, Italy |
| 48.6 | Confirmed | Leopold Anton Eleutherius von Firmian † | Archbishop of Salzburg, Austria |
| 73.8 | Appointed | José Flores Osorio † | Bishop of Orihuela, Spain | Bishop of Cuenca, Spain |
| 47.7 | Installed | Angelo Maria Quirini (Querini), O.S.B. † | Cardinal-Priest of Sant’Agostino | Cardinal, Bishop of Brescia, Italy |
| 24 Dec | | Born | Antonius Stephanus Trevisan † | Venetiis | Bishop of Scardona (Skradin), Italy |
| 25 Dec | 36.8 | Ordained Bishop | Pierre-Herman Dosquet, P.S.S. † | Titular Bishop of Samos | Bishop Emeritus of Québec, Canada |
| 26 Dec | 46.4 | Ordained Priest | Alessandro degli Abbati † | Priest | Titular Bishop of Philadelphia in Arabia |
| 74.1 | Died | Jean-Baptiste de la Croix Chevrière de St. Vallier † | Bishop of Québec, Canada |
| 64.3 | Succeeded | Louis-François Du Plessis de Mornay, O.F.M. Cap. † | Bishop of Québec, Canada | Bishop Emeritus |
| Born | Giovanni Damase Salutti, O.S.A. † | Roma | Bishop of Peking [Beijing], China |
| 63.8 | Ordained Bishop | Manuel Tercero Rozas, O.S.A. † | Titular Bishop of Icosium | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 27 Dec | 22.7 | Ordained Priest | José de Jesus Maria Caetano Carvalho, O.P. † | Priest of Order of Friars Preachers | Bishop of Castelo Branco, Portugal |
| 42.4 | Ordained Bishop | Giovanni Fabrizio de Capua † | Archbishop of Taranto, Italy | Archbishop of Salerno, Italy |
| 28 Dec | 55.1 | Ordained Bishop | Giovanni Maria de Laurentiis, O. Carm. † | Bishop of Capri, Italy |
| 29 Dec | 57.6 | Selected | Jean-Baptiste Surian † | Bishop of Vence, France |
| 31 Dec | 58.3 | Ordained Bishop | Tommaso Di Grazia † | Bishop of Castellammare di Stabia, Italy |