| Date | Age | Event | Bishop | Title | Current Title |
| 1 Sep | 42.4 | Ordained Bishop | Petru Pavel Aaron, O.S.B.M. † | Bishop of Făgăraş (Romanian), Romania |
| Born | [Thomas-Juste Poullard] † | | Bishop Emeritus of [Saône-et-Loire (Constitutional), France] |
| 2 Sep | 64.8 | Died | Fabrizio Borgia † | Bishop of Ferentino, Italy |
| 77.8 | Died | Eustachio Palma † | Bishop of Fossombrone, Italy |
| 7 Sep | 68.8 | Died | Antoine-Pierre de Grammont † | Archbishop of Besançon, France |
| 11 Sep | 84.5 | Appointed | Giovanni Maria Benzoni † | Titular Archbishop of Nazianzus | Bishop Emeritus of Chioggia, Italy |
| 13 Sep | 46.6 | Selected | Cezarij (Cezary) Stebnovskyj (Stebnowski), O.S.B.M. † | Archbishop of Smoleńsk (Ukrainian), Russian Federation |
| 16 Sep | 53.7 | Appointed | Ubaldo Baldassini, B. † | Bishop of Bagnoregio (Bagnorea), Italy | Bishop of Jesi, Italy |
| 44.0 | Appointed | Giovanni Battista Bavestrelli † | Bishop of Chios (Scio), Greece | Vicar Apostolic of Constantinople, Turkey |
| 41.9 | Confirmed | François-Joseph de Brunes de Monlouet † | Bishop of Saint-Omer, France |
| 54.3 | Appointed | Isidoro Cossío y Bustamente Diaz Santos † | Bishop of Valladolid, Spain | Bishop Emeritus |
| 61.2 | Appointed | Luigi d’Alessandro † | Archbishop of Bari (-Canosa), Italy |
| 67.8 | Appointed | Muzio Gaeta (Jr.) † | Archbishop of Capua, Italy |
| 53.6 | Appointed | Stefano di Leoni † | Bishop of Novigrad (Cittanova), Croatia |
| 50.5 | Appointed | Filippo Mornati † | Bishop of Nepi e Sutri, Italy |
| 49.9 | Appointed | Celestino (Pietro Antonio) Orlandi, O.S.B. † | Bishop of Molfetta, Italy |
| 40.2 | Appointed | Pietro Paolo Tosi † | Bishop of Ferentino, Italy |
| 53.3 | Appointed | Johann Philipp von Walderdorff † | Titular Archbishop of Patrae (Veters) | Archbishop of Trier, Germany |
| 53.3 | Confirmed | Johann Philipp von Walderdorff † | Coadjutor Archbishop of Trier, Germany | Archbishop |
| 17 Sep | 78.9 | Died | Pierre François Hugon † | Auxiliary Bishop of Besançon, France |
| 19 Sep | 63.2 | Resigned | Serafin Torriani, O.F.M. Ref. † | Bishop of Pult (Pulati), Albania | Bishop Emeritus |
| 21 Sep | 24.2 | Ordained Priest | Giovanni Battista Brancaccio † | Priest | Bishop of Ostuni, Italy |
| 22.8 | Ordained Priest | Franciscus Kornis de Göncz-Ruszka † | Priest | Auxiliary Bishop of Győr (Raab), Hungary |
| 21.3 | Ordained Deacon | Beat (Marzell) Küttel von Gersau, O.S.B. † | Deacon of Order of Saint Benedict | Abbot of Maria Einsiedeln, Switzerland |
| 22 Sep | 23.9 | Ordained Deacon | Vicente do Espirito Santo, O.A.D. † | Deacon of Agostiniani Scalzi | Prelate of Goiás, Brazil |
| 53.6 | Ordained Bishop | Stefano di Leoni † | Bishop of Novigrad (Cittanova), Croatia |
| 23.4 | Ordained Priest | Ludwig (Johann Georg) Zöschinger, C.R.S.A. † | Priest of Confederation of Canons Regular of St. Augustine |
| 24 Sep | | Born | Luis La Encina Díaz y Pereiro † | | Bishop of Arequipa, Peru |
| 29 Sep | 53.7 | Ordained Bishop | Ubaldo Baldassini, B. † | Bishop of Bagnoregio (Bagnorea), Italy | Bishop of Jesi, Italy |
| 23.9 | Ordained Priest | Vicente do Espirito Santo, O.A.D. † | Priest of Agostiniani Scalzi | Prelate of Goiás, Brazil |
| 50.6 | Ordained Bishop | Filippo Mornati † | Bishop of Nepi e Sutri, Italy |
| 49.9 | Ordained Bishop | Celestino (Pietro Antonio) Orlandi, O.S.B. † | Bishop of Molfetta, Italy |
| 40.2 | Ordained Bishop | Pietro Paolo Tosi † | Bishop of Ferentino, Italy |
| Oct | 76.2 | Died | Lorenzo Gioeni d’Aragona † | Bishop of Agrigento (Girgenti), Italy |
| 1 Oct | 66.6 | Resigned | Luca Melchiore Tempi † | Apostolic Nuncio to Portugal | Cardinal, Cardinal-Priest of Santa Croce in Gerusalemme |
| 4 Oct | | Born | Franciszek Skarbek von Malczewski † | | Archbishop of Warszawa {Warsaw}, Poland |
| 5 Oct | 40.9 | Appointed | Girolamo Spínola † | Apostolic Nuncio to Spain | Cardinal, Cardinal-Bishop of Palestrina |
| 6 Oct | 22.9 | Ordained Priest | Carlo Luigi Buronzo del Signore † | Priest | Archbishop Emeritus of Torino {Turin}, Italy |
| 63.7 | Died | Silvestro Lodovico Paparelli † | Bishop of Cagli, Italy |
| 11 Oct | 69.5 | Died | João Luis Vasconcellos, S.J. † | Archbishop of Cranganore (Angamala), India |
| 13 Oct | | Born | Silvestar Bubanović, O.S.B.M. † | | Bishop of Križevci (Kreutz) (Križevci), Croatia |
| 23.1 | Ordained Deacon | José Joaquim Justiniano Mascarenhas Castello Branco † | Deacon | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| Born | Ivan Antun Sintić † | | Bishop of Krk (Veglia), Croatia |
| 14 Oct | 57.5 | Died | José Gómez † | Bishop of Zamora, Spain |
| 16 Oct | 37.1 | Selected | Francesco Agostino della Chiesa † | Bishop of Vigevano, Italy |
| 45.3 | Selected | Filippo Mazzetti † | Bishop of Fossano, Italy |
| 20 Oct | 58.2 | Ordained Bishop | Buenaventura Blanco y Elguero (Helguero) † | Bishop of Antequera, Oaxaca, México |
| 23.1 | Ordained Priest | José Joaquim Justiniano Mascarenhas Castello Branco † | Priest | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 52.8 | Ordained Bishop | Manuel de Matos, O.F.M. Disc. † | Bishop of Nueva Caceres, Philippines |
| 21 Oct | | Born | István Fischer de Nagy † | | Archbishop of Eger, Hungary |
| 22 Oct | | Born | Jean-François-Marie Le Pappe de Trévern † | | Bishop of Strasbourg, France |
| 24 Oct | 60.5 | Selected | Ciro de Alteriis † | Bishop of Monopoli, Italy | Bishop of Acerra, Italy |
| 27 Oct | 61.0 | Died | Giuseppe Suares de la Concha † | Bishop of San Miniato, Italy |
| 3 Nov | 56.5 | Selected | István Pucz † | Bishop of Beograd (-Smederevo), Serbia |
| 4 Nov | 58.3 | Installed | Buenaventura Blanco y Elguero (Helguero) † | Bishop of Antequera, Oaxaca, México |
| 12 Nov | 58.7 | Died | Joseph Benedikt von Rost † | Bishop of Chur, Switzerland |
| 17 Nov | 45.8 | Ordained Priest | Giovanni Ottavio Bufalini † | Priest | Cardinal, Bishop of Ancona e Numana, Italy |
| 47.1 | Selected | Antoine Clériade de Choiseul-Beaupré † | Cardinal, Archbishop of Besançon, France |
| 18 Nov | 51.1 | Selected | Giuseppe Antonio de Requeséns, O.S.B. † | Bishop of Siracusa, Italy |
| 19 Nov | | Born | Gregor Tarkovič (Tárkovits) † | | Bishop of Prešov (Prjašev, Eperjes) (Slovak), Slovakia |
| 25 Nov | 63.9 | Died | Karl Philipp Henri von Greiffenclau zu Vollraths † | Bishop of Würzburg, Germany |
| 26 Nov | | Born | Narciso Coll y Prat † | | Bishop of Palencia, Spain |
| 30 Nov | 54.5 | Ordained Bishop | Isidoro Cossío y Bustamente Diaz Santos † | Bishop of Valladolid, Spain | Bishop Emeritus |
| 68.5 | Died | Gerolamo Fonda † | Bishop of Trogir (Traù), Croatia |
| Dec | 23.5 | Ordained Priest | Giuseppe Guzzetta † | Priest | Titular Bishop of Lampsacus |
| 2 Dec | | Born | Giuseppe Mancusi † | | Bishop of Acerno, Italy |
| 4 Dec | 46.8 | Died | Józef Julian Stanisław Sapieha † | Coadjutor Bishop of Vilnius, Lithuania |
| 8 Dec | 69.6 | Ordained Deacon | Cosimo Imperiali † | Deacon | Cardinal, Cardinal-Priest of Santa Cecilia |
| 16 Dec | 50.0 | Appointed | Lodovico Agostino Bertozzi † | Bishop of Cagli, Italy |
| 45.9 | Appointed | Giovanni Ottavio Bufalini † | Titular Archbishop of Chalcedon | Cardinal, Bishop of Ancona e Numana, Italy |
| 51.0 | Confirmed | Jacques-Marie de Caritat de Condorcet † | Bishop of Auxerre, France | Bishop of Lisieux, France |
| 55.0 | Appointed | Gaetano de Carli † | Bishop of Rieti, Italy |
| 60.6 | Confirmed | Ciro de Alteriis † | Bishop of Monopoli, Italy | Bishop of Acerra, Italy |
| 61.9 | Installed | Carlo Francesco Durini † | Cardinal-Priest of Santi Quattro Coronati | Cardinal, Bishop of Pavia, Italy |
| 44.4 | Appointed | Benedetto Latilla, C.R.L. † | Bishop of Avellino e Frigento, Italy | Bishop Emeritus |
| 51.7 | Appointed | Dionigi Latomo Massa † | Bishop of Alessano, Italy |
| 49.3 | Appointed | Marco Aurelio Petruccelli † | Bishop of Nardò, Italy |
| 51.9 | Confirmed | Charles-Marie de Quélen † | Titular Bishop of Bethleem |
| 55.5 | Appointed | Asensio Sales † | Bishop of Barcelona, Spain |
| 39.6 | Appointed | Angelo Maria Venizza † | Bishop of Città della Pieve, Italy |
| 18 Dec | 27.3 | Resigned | Luis Antonio Jaime de Borbón y Farnesio † | Administrator of Toledo, Spain | |
| 27.3 | Resigned | Luis Antonio Jaime de Borbón y Farnesio † | Cardinal-Deacon of Santa Maria della Scala | |
| 27.3 | Resigned | Luis Antonio Jaime de Borbón y Farnesio † | Administrator of Sevilla {Seville}, Spain | |
| 58.9 | Elevated to Cardinal | Luis Antonio Fernández de Córdoba Portocarrero Guzmán y Aguilar † | Cardinal, Archbishop of Toledo, Spain |
| 19 Dec | 45.9 | Appointed | Giovanni Ottavio Bufalini † | Apostolic Nuncio to Switzerland | Cardinal, Bishop of Ancona e Numana, Italy |
| 20 Dec | | Appointed | Eusebio Franzosini, O.P. † | Vicar Apostolic of Smirne, Turkey |
| 21 Dec | 45.9 | Ordained Bishop | Giovanni Ottavio Bufalini † | Titular Archbishop of Chalcedon | Cardinal, Bishop of Ancona e Numana, Italy |
| 55.0 | Ordained Bishop | Gaetano de Carli † | Bishop of Rieti, Italy |
| 22.5 | Ordained Priest | Roberto Costaguti † | Priest | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 22.4 | Ordained Deacon | Nikolaus Kondé de Póka-Telek † | Deacon | Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 51.7 | Ordained Bishop | Dionigi Latomo Massa † | Bishop of Alessano, Italy |
| 23.6 | Ordained Priest | Johann Anton Miocevich † | Priest | Bishop of Trogir (Traù), Croatia |
| 22.9 | Ordained Priest | Francesco Paolo Perremuto, O.S.B. † | Priest of Order of Saint Benedict | Archbishop of Messina, Italy |
| 24.3 | Ordained Priest | Pietro Stefano Speranza † | Priest | Bishop of Alatri, Italy |
| 22 Dec | 60.7 | Ordained Bishop | Ciro de Alteriis † | Bishop of Monopoli, Italy | Bishop of Acerra, Italy |
| 44.5 | Ordained Bishop | Benedetto Latilla, C.R.L. † | Bishop of Avellino e Frigento, Italy | Bishop Emeritus |
| Born | João de Magalhães e Avelar † | | Bishop of Porto, Portugal |
| 49.3 | Ordained Bishop | Marco Aurelio Petruccelli † | Bishop of Nardò, Italy |
| 39.6 | Ordained Bishop | Angelo Maria Venizza † | Bishop of Città della Pieve, Italy |
| 27 Dec | 31.5 | Ordained Priest | Franz de Paula Xaver Ludwig Jakob von Breuner † | Priest of Salzburg, Austria | Bishop of Chiemsee, Germany |
| 29 Dec | 50.0 | Ordained Bishop | Lodovico Agostino Bertozzi † | Bishop of Cagli, Italy |