| Date | Age | Event | Bishop | Title | Current Title |
| Sep | 77.4 | Retired | José Carrión y Marfil † | Bishop of Trujillo, Peru | Bishop Emeritus |
| 8 Sep | 67.5 | Died | Antonio Gabriele Severoli † | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 23.8 | Ordained Priest | Bl. Anton Martin Slomšek † | Priest of Lavant, Slovenia | Bishop |
| 9 Sep | 81.6 | Died | Paolo Giuseppe Solaro † | Cardinal, Bishop Emeritus of Aosta, Italy |
| 11 Sep | 55.3 | Died | László Esterházy † | Bishop of Foreign Diocese |
| 12 Sep | 53.6 | Ordained Bishop | Roman Sebastian (Franz Xaver) Zängerle, O.S.B. † | Bishop of Seckau, Austria |
| 14 Sep | 55.7 | Resigned | Ioannes Baptistus Russin † | Bishop of Syros e Milos, Greece | Bishop Emeritus |
| 15 Sep | | Born | Joseph Hergenröther † | Würzburg, Germany | Cardinal, Prefect of the Vatican Secret Archives |
| 19 Sep | 67.7 | Died | Arnaud-Ferdinand de La Porte † | Bishop of Carcassonne, France |
| 22 Sep | | Born | Gaspard Mermillod † | Carouge | Cardinal, Bishop Emeritus of Lausanne et Genève, Switzerland |
| 23 Sep | | Born | Domenico Mignanti † | Tolfa | Bishop of Civita Castellana, Orte e Gallese, Italy |
| 24 Sep | | Born | Luiz da Conceição Saraiva, O.S.B. † | Santo Amaro | Bishop of São Luís do Maranhão, Brazil |
| 27 Sep | 46.3 | Confirmed | Joaquín Abarca Blanque † | Bishop of León, Spain |
| 64.2 | Appointed | Karl Rudolf von Buol-Schauenstein † | Bishop of Chur-Sankt Gallen, Switzerland |
| 66.9 | Elevated to Cardinal | Teresio Maria Carlo Vittorio Ferrero della Marmora † | Cardinal, Bishop Emeritus of Saluzzo, Italy |
| 54.8 | Confirmed | Luis Antonio Folgueras Sión † | Bishop of San Cristóbal de La Laguna o Tenerife, Spain | Archbishop of Granada, Spain |
| 50.5 | Confirmed | Bernardo Francés Caballero † | Archbishop of Zaragoza, Spain |
| 41.0 | Confirmed | Francisco Javier García Casarrubios y Melgar, O. Cist. † | Bishop of Ceuta, Spain | Bishop of Tui, Spain |
| 55.1 | Elevated to Cardinal | Karl Kajetan Graf von Gaisruck (Gaysruck) † | Cardinal, Archbishop of Milano {Milan}, Italy |
| 52.9 | Confirmed | Félix Herrero Valverde † | Bishop of Orihuela, Spain |
| 59.8 | Confirmed | Pedro Inguanzo Rivero † | Cardinal, Archbishop of Toledo, Spain |
| 80.5 | Appointed | Simón López García, C.O. † | Archbishop of Valencia, Spain |
| 66.8 | Confirmed | Juan Francisco Martínez Castrillón † | Bishop of Palencia, Spain | Bishop of Málaga, Spain |
| 48.1 | Confirmed | Manuel Bernardo Morete Bodelón † | Bishop of Islas Canarias {Canary Islands}, Spain | Bishop of Astorga, Spain |
| 68.0 | Elevated to Cardinal | Patrício da Silva, O.S.A. † | Cardinal, Patriarch of Lisboa, Portugal |
| 28 Sep | 58.7 | Appointed | Pablo Colmenares, O.S.B. † | Bishop of Lérida, Spain |
| Born | Richard Gilmour † | Glasgow, Great Britain | Bishop of Cleveland, Ohio, USA |
| 62.8 | Appointed | Hipólito Antonio Sánchez Rangel de Fayas, O.F.M. † | Apostolic Administrator of Cartagena (en España) | Bishop of Lugo, Spain |
| 29 Sep | | Succeeded | Cornelius Egan † | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| Died | Charles Sughrue † | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| 3 Oct | 42.8 | Ordained Bishop | Franz Xavier Luschin † | Bishop of Trento, Italy | Archbishop of Gorizia e Gradisca, Italy |
| 60.5 | Ordained Bishop | Petrus Pustet † | Bishop of Eichstätt, Germany |
| 23.4 | Ordained Priest | Franciszek Stefanowicz † | Priest of Gniezno-Poznań, Poland | Auxiliary Bishop |
| 58.7 | Ordained Bishop | Juan Baltasar Toledano † | Bishop of Valladolid, Spain |
| 4 Oct | 62.1 | Died | Simón Antonio Rentería Reyes † | Archbishop of Santiago de Compostela, Spain |
| 9 Oct | 77.3 | Died | Viktor Franz Anton von Glutz-Ruchti † | Auxiliary Bishop of Basel, Switzerland |
| 11 Oct | 78.3 | Died | Jean-Louis-Simon Rollet † | Bishop Emeritus of Montpellier, France |
| 12 Oct | 60.8 | Ordained Bishop | Joaquín López Sicilia † | Bishop of Coria, Spain | Archbishop of Valencia, Spain |
| 13 Oct | 69.6 | Died | Jean-Marie Cliquet de Fontenay † | Archbishop of Bourges, France |
| 61.1 | Appointed | Augustin de Mailhet de Vachères † | Bishop of Tulle, France |
| 62.8 | Appointed | Prosper de Tournefort † | Bishop of Limoges, France |
| 15 Oct | | Born | Benoit-Marie Langénieux † | Villefranche-sur-Saone | Cardinal, Archbishop of Reims, France |
| 16 Oct | | Died | Antoine Missirli † | Vicar Apostolic of Greece, Faithful of Eastern Rite (Armenian) |
| 17 Oct | 68.9 | Ordained Bishop | Ramón María Adurriaga Uribe † | Bishop of Avila, Spain |
| 65.7 | Ordained Bishop | Antonio Ceruelo Sanz † | Bishop of Menorca, Spain |
| 19 Oct | 48.7 | Appointed | Pablo Jesús Corcuera Caserta † | Bishop of Vic, Spain |
| 22 Oct | 54.2 | Appointed | Jules-François de Simony † | Bishop of Soissons, France | Bishop Emeritus of Soissons (-Laon), France |
| 59.4 | Appointed | Joseph-Julien de Saint-Rome-Gualy † | Bishop of Carcassonne, France |
| 54.7 | Appointed | Guillaume-Aubin de Villèle † | Archbishop of Bourges, France |
| 24 Oct | 39.3 | Died | Guillermo Martínez Riaguas † | Bishop of Astorga, Spain |
| 25 Oct | 72.8 | Died | Patrick MacMullan † | Bishop of Down and Connor, Ireland |
| 26 Oct | 58.6 | Appointed | Francisco Javier Cienfuegos Jovellanos † | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| Born | Niccola Sozzifanti † | Pistoia | Bishop of Pistoia-Prato, Italy |
| Born | Giovanni Maria Strocchi † | Faenza | Bishop of Cesena, Italy |
| 27 Oct | 60.8 | Appointed | Tomás La Iglesia España † | Bishop of Zamora, Spain |
| 28 Oct | 50.5 | Appointed | Isidoro Bonifacio López Pulido, O.S.B. † | Bishop of Urgell, Spain | Bishop of Segovia, Spain |
| 29 Oct | 47.0 | Appointed | Rafael Manuel José Benito de Vélez Téllez, O.F.M. Cap. † | Archbishop of Santiago de Compostela, Spain |
| 3 Nov | | Born | Spiridione Maddalena † | Corfu | Bishop of Corfù, Greece |
| 4 Nov | | Born | Pierre-Ferdinand Vitte, S. M. † | Cormoz, France | Vicar Apostolic of Nouvelle-Calédonie, New Caledonia, Pacific (Oceania) |
| 6 Nov | | Born | Tomás Bryan y Livermore † | Málaga | Bishop of Cartagena (en España) |
| 7 Nov | 48.2 | Ordained Bishop | Agustín Lorenzo Varela Temes † | Bishop of Salamanca, Spain |
| 11 Nov | | Appointed | Serafino Carchero, O.F.M. Cap. † | Bishop of Ogliastra, Italy | Bishop of Bisarchio o Bisarcio, Italy |
| Born | Andreas Steinhuber, S.J. † | Uttlau, Germany | Cardinal, Prefect of the Congregation of the Index |
| 16 Nov | 80.6 | Confirmed | Simón López García, C.O. † | Archbishop of Valencia, Spain |
| 18 Nov | 24.1 | Ordained Priest | Michael von Deinlein † | Priest of Bamberg, Germany | Archbishop |
| 19 Nov | 53.9 | Succeeded | Edward Kernan † | Bishop of Clogher, Ireland |
| 80.9 | Died | James Murphy † | Bishop of Clogher, Ireland |
| 21 Nov | 48.3 | Ordained Bishop | Manuel Bernardo Morete Bodelón † | Bishop of Islas Canarias {Canary Islands}, Spain | Bishop of Astorga, Spain |
| 47.3 | Ordained Bishop | Ignaz Franz Sales Zimmermann † | Bishop of Lavant, Slovenia |
| 25 Nov | | Born | Giovanni Battista Tescari † | Breganze | Bishop of Borgo San Donnino, Italy |
| 26 Nov | 89.1 | Died | Jean-Baptiste du Chilleau † | Archbishop of Tours, France |
| 57.5 | Succeeded | Augustin-Louis de Montblanc † | Archbishop of Tours, France |
| 28 Nov | 72.6 | Died | Juan Cruz Ruiz de Cabañas y Crespo † | Bishop of Guadalajara, Jalisco, México |
| 30 Nov | 54.4 | Appointed | Domingo de Silos Santiago Apollinario Moreno, O.S.B. † | Bishop of Cádiz, Spain |
| 5 Dec | | Born | Jean-Claude Duret, C.S.Sp. † | Menthonnex-en-Bornes, France | Vicar Apostolic of Senegambia, Senegal |
| 67.0 | Ordained Bishop | Juan Francisco Martínez Castrillón † | Bishop of Palencia, Spain | Bishop of Málaga, Spain |
| 79.1 | Died | Charles Mannay † | Bishop of Rennes, France |
| 6 Dec | | Born | Vincenzo Salvatore † | Carife | Bishop of Gravina-Irsina, Italy |
| 7 Dec | | Born | Anthony Dominic Ambrose Pellicer † | Saint Augustine, FL | Bishop of San Antonio, Texas, USA |
| 79.2 | Died | Juan Miguel Pérez González † | Bishop of Gerona, Spain |
| 8 Dec | | Born | Léon Bélouino † | Moncontour, France | Auxiliary Bishop Emeritus of Port-au-Prince, Haïti |
| 53.1 | Ordained Bishop | Félix Herrero Valverde † | Bishop of Orihuela, Spain |
| 10 Dec | 58.9 | Confirmed | Pablo Colmenares, O.S.B. † | Bishop of Lérida, Spain |
| 16 Dec | 30.8 | Ordained Priest | Robert William Willson (Wilson) † | Priest | Bishop Emeritus of Hobart, Australia |
| 18 Dec | 22.6 | Ordained Priest | Giuseppe Andrea Bizzarri † | Priest | Cardinal, Prefect of the Roman Curia - Other |
| 24.2 | Ordained Priest | Louis-Auguste Delalle † | Priest | Bishop of Rodez, France |
| 23.1 | Ordained Priest | Christoph Florentius Kött † | Priest of Fulda, Germany | Bishop |
| Born | Giulio Lenti † | Roma | Auxiliary Bishop of Roma {Rome}, Italy |
| 23.2 | Ordained Priest | Giuseppe Singlau † | Priest | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 19 Dec | 22.9 | Ordained Priest | Johann Amberg † | Priest of Brixen {Bressanone}, Italy | Auxiliary Bishop |
| 63.6 | Appointed | José Antonio Azpeitia de y Sáenz de Santamaria † | Bishop of Cartagena (en España) |
| 20 Dec | 37.5 | Appointed | Giuseppe-Maria Amorelli † | Bishop of Siracusa, Italy |
| 52.8 | Appointed | Giovanni Bindi Sergardi † | Bishop of Montalcino, Italy |
| 58.8 | Confirmed | Francisco Javier Cienfuegos Jovellanos † | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 48.9 | Confirmed | Pablo Jesús Corcuera Caserta † | Bishop of Vic, Spain |
| 60.0 | Elevated to Cardinal | Pedro Inguanzo Rivero † | Cardinal, Archbishop of Toledo, Spain |
| 61.0 | Confirmed | Tomás La Iglesia España † | Bishop of Zamora, Spain |
| 50.6 | Confirmed | Isidoro Bonifacio López Pulido, O.S.B. † | Bishop of Urgell, Spain | Bishop of Segovia, Spain |
| 49.2 | Elevated to Cardinal | Ludovico Micara, O.F.M. Cap. † | In Pectore | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 53.0 | Appointed | Gabriele Papa † | Archbishop of Sorrento, Italy |
| 47.2 | Confirmed | Rafael Manuel José Benito de Vélez Téllez, O.F.M. Cap. † | Archbishop of Santiago de Compostela, Spain |
| 21 Dec | 41.2 | Ordained Bishop | Francisco Javier García Casarrubios y Melgar, O. Cist. † | Bishop of Ceuta, Spain | Bishop of Tui, Spain |
| 24 Dec | 60.1 | Resigned | Karl Klemens Reichsfreiherr von Gruben † | Auxiliary Bishop of Köln {Cologne}, Germany | Bishop of Hildesheim, Germany |
| 60.0 | Appointed | Ferdinand August Graf Spiegel † | Archbishop of Köln {Cologne}, Germany |
| Appointed | Maurycy Mateusz Wojakowski † | Auxiliary Bishop of Lublin, Poland |
| Appointed | Maurycy Mateusz Wojakowski † | Titular Bishop of Arcadiopolis in Asia | Auxiliary Bishop of Lublin, Poland |
| 26 Dec | | Born | Placido Petacci † | Roma | Bishop of Tivoli, Italy |
| 63.1 | Appointed | Hipólito Antonio Sánchez Rangel de Fayas, O.F.M. † | Bishop of Lugo, Spain |
| 31 Dec | | Born | Jan Ignacy Korytkowski † | Gniezno | Auxiliary Bishop-Elect of Gniezno-Poznań, Poland |
| 80.6 | Died | Irénée-Yves Desolle (Dessole) † | Archbishop Emeritus of Chambéry, France |