| Date | Age | Event | Bishop | Title | Current Title |
| 3 Jul | 51.2 | Appointed | José Carrión y Marfil † | Bishop of Trujillo, Peru | Bishop Emeritus |
| 62.8 | Appointed | José Cuero y Caicedo † | Bishop of Cuenca, Ecuador | Bishop of Quito, Ecuador |
| 44.3 | Appointed | José González de Cándamo y Cauniego † | Auxiliary Bishop of San Cristobal de la Habana, Cuba | Auxiliary Bishop of San Cristobal de la Habana, Cuba |
| 44.3 | Appointed | José González de Cándamo y Cauniego † | Titular Bishop of Mylasa | Auxiliary Bishop of San Cristobal de la Habana, Cuba |
| Born | Pier Giuseppe Vaggi, O.F.M. Cap. † | Genova | Bishop of Bobbio, Italy |
| 5 Jul | | Born | Dominic O’Brien † | Waterford | Bishop of Waterford and Lismore, Ireland |
| 6 Jul | 51.5 | Installed | José Antonio de la Huerta Caso † | Bishop of Nicaragua |
| 7 Jul | | Born | Felice Romano † | Torre del Greco | Bishop of Ischia, Italy |
| 8 Jul | 58.0 | Ordained Bishop | Diego Santamaría Cevallos, O.F.M. † | Bishop of Santa Marta, Colombia |
| 9 Jul | 58.0 | Died | Wilhelm Joseph Leopold Willibald von Baden † | Auxiliary Bishop of Konstanz {Constance}, Germany |
| 12 Jul | 80.6 | Died | Francesco Antonio Marcucci † | Bishop of Montalto (delle Marche), Italy |
| Born | John Francis (William) Whelan, O.C.D. † | Dublin, Ireland | Vicar Apostolic Emeritus of Bombay, India |
| 23 Jul | 42.3 | Appointed | Jean-André Doussain, M.E.P. † | Coadjutor Vicar Apostolic of Cochin {Cocincina}, Viêt Nam |
| 42.3 | Appointed | Jean-André Doussain, M.E.P. † | Titular Bishop of Adraa | Coadjutor Vicar Apostolic of Cochin {Cocincina}, Viêt Nam |
| 24 Jul | 47.6 | Appointed | St. Louis Gabriel Taurin Dufresse, M.E.P. † | Coadjutor Vicar Apostolic of Se-Ciuen (Setchoan), China | Vicar Apostolic |
| 47.6 | Appointed | St. Louis Gabriel Taurin Dufresse, M.E.P. † | Titular Bishop of Thabraca | Vicar Apostolic of Se-Ciuen (Setchoan), China |
| 27 Jul | | Born | Raffaele Bocci † | Civitate Plebis | Bishop of Alatri, Italy |
| 29 Jul | 64.4 | Ordained Bishop | Andrés Aguiar Caamaño † | Bishop of Mondoñedo, Spain |
| Born | Nicola Rossi † | Fulgentia | Bishop of Todi, Italy |
| 2 Aug | 24.2 | Ordained Priest | José Higinio Madalengoitia y Sanz de Zárate † | Priest | Bishop of Trujillo, Peru |
| 5 Aug | 49.5 | Ordained Bishop | Francisco Rousset de Jesús y Rosas, O.F.M. † | Bishop of Sonora, México |
| 8 Aug | 62.2 | Died | Vincenzo Maria Parruco Tries, O.P. † | Bishop of Bovino, Italy |
| 32.3 | Appointed | Pierre Trenchant, M.E.P. † | Coadjutor Vicar Apostolic of Se-Ciuen (Setchoan), China |
| 9 Aug | 23.1 | Appointed | Jan Nepomucen Kossakowski † | Bishop of Vilnius, Lithuania |
| 11 Aug | | Born | Louis-Antoine de Salinis † | Morlaas | Archbishop of Auch, France |
| 12 Aug | 47.2 | Ordained Bishop | Dominicus Ventapane † | Titular Bishop of Tium |
| 14 Aug | 60.9 | Appointed | Antonio Tavira Almazán † | Bishop of Salamanca, Spain |
| 52.7 | Appointed | Juan Antonio de la Virgen María (Viana), O.C.D. † | Bishop of Almería, Spain |
| 18 Aug | | Born | Jacobus Gerardus Schepers † | | Vicar Apostolic of Dutch Guyana-Suriname, Suriname, Antilles |
| 21 Aug | 62.2 | Died | Corneille-François de Nélis † | Bishop of Antwerpen {Antwerp, Anvers}, Belgium |
| 22 Aug | | Born | Ignatius Aloysius Reynolds † | Bardstown, KY | Bishop of Charleston, South Carolina, USA |
| 23 Aug | | Born | Antonio Novasconi † | Castiglione | Bishop of Cremona, Italy |
| 26 Aug | 24.0 | Ordained Priest | Domenico Bellusci † | Priest | Titular Bishop of Sinope |
| 45.1 | Ordained Bishop | Jakub Ignacy Dederko † | Bishop of Minsk, Belarus |
| 49.0 | Ordained Bishop | Cyprian Odyniec, S.J. † | Titular Bishop of Hippo Diarrhytus | Auxiliary Bishop of Mohilev, Belarus |
| 28 Aug | 60.0 | Appointed | Juan Agapito Ramírez Arellano † | Bishop of Gerona, Spain |
| 29 Aug | | Born | Alessandro Macioti † | Velletri | Official of the Congregation of the Holy Office |
| 2 Sep | 84.1 | Died | Jakub Walerian Tumanowicz † | Archbishop of Lviv (Armenian), Ukraine |
| 4 Sep | | Born | Costantino Patrizi Naro † | Siena, Italy | Cardinal, Secretary of the Congregation for Universal Inquisition |
| 7 Sep | 73.8 | Resigned | Vincenzo Maria Altieri † | Cardinal-Deacon of Santa Maria in Via Lata | |
| 67.3 | Resigned | Tommaso Antici † | Cardinal-Priest of Santa Maria in Trastevere | |
| 8 Sep | | Born | Camillo Letizia, C.M. † | Napoli | Bishop of Tricarico, Italy |
| 13 Sep | | Born | Joseph-Antoine-Henri Jordany † | Puimoisson | Bishop Emeritus of Fréjus, France |
| 14 Sep | 58.0 | Appointed | Pedro Díaz Valdés † | Bishop of Barcelona, Spain |
| 17 Sep | | Born | Antonio Benedetto Antonucci † | Subiaco | Cardinal, Bishop of Ancona e Numana, Italy |
| 22 Sep | 23.1 | Ordained Priest | Vincenzo Macioti † | Priest | Bishop of Ferentino, Italy |
| 24.2 | Ordained Priest | Giuseppe Palma, O. Carm. † | Priest of Order of Our Lady of Mt. Carmel | Bishop of Avellino, Italy |
| 23.1 | Ordained Priest | Johann Leonard Pfaff † | Priest of Fulda, Germany | Bishop |
| 24 Sep | | Appointed | James O’Shaughnessy † | Coadjutor Bishop of Killaloe, Ireland | Bishop |
| Appointed | James O’Shaughnessy † | Titular Bishop of Samosata | Bishop of Killaloe, Ireland |
| 25 Sep | 62.4 | Appointed | Francisco Ignacio Iñigo Angulo † | Bishop of Osma, Spain |
| 28 Sep | | Appointed | Giovanni Battista Simon † | Archbishop of Sassari, Italy |
| 49.9 | Appointed | Francisco Sisternes de Oblites † | Archbishop of Oristano, Italy |
| 29 Sep | | Born | Toma Jedrlinić † | Castelmuschio | Bishop of Dubrovnik (Ragusa), Croatia |
| Born | Michele Viale-Prelà † | Bastia | Cardinal, Archbishop of Bologna, Italy |
| 30 Sep | 42.6 | Ordained Bishop | Giuseppe Maria Spina † | Titular Archbishop of Corinthus | Cardinal, Archbishop Emeritus of Genova, Italy |
| 6 Oct | | Born | Louis-Anne Nogret † | Josselin | Bishop Emeritus of Saint-Claude, France |
| 12 Oct | 40.6 | Appointed | Jozafat Bulhak, O.S.B.M. † | Bishop of Foreign Diocese | Bishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 14 Oct | | Born | Łukasz Baraniecki † | Kabarowie | Archbishop of Lviv, Ukraine |
| 15 Oct | 24.4 | Ordained Priest | Diego Capece † | Priest | Bishop of Ampurias e Tempio, Italy |
| Born | Patrick Raymond Griffith, O.P. † | Limerick, Ireland | Vicar Apostolic of Cape of Good Hope, Western District {Capo di Buona Speranza, Distretto Occidentale}, South Africa |
| Born | Johann Georg Müller † | Koblenz | Bishop of Münster, Germany |
| 16 Oct | 68.8 | Succeeded | Jan Józef Dembowski † | Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 84.5 | Resigned | Adam Stanisław Krasiński † | Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine | Bishop Emeritus |
| 21 Oct | 53.6 | Ordained Bishop | Pedro Agustín Estévez y Ugarte † | Bishop of Yucatán (Mérida), México |
| 28 Oct | 51.3 | Ordained Bishop | Alexander Cameron † | Titular Bishop of Maximianopolis in Palaestina | Vicar Apostolic Emeritus of Lowland District, Scotland, Great Britain |
| 29 Oct | 54.5 | Appointed | Józef Miaskowski † | Bishop of Warszawa, Poland |
| 70.2 | Appointed | Fernando del Portillo y Torres, O.P. † | Archbishop of Santafé en Nueva Granada, Colombia |
| 4 Nov | 23.3 | Ordained Priest | Filippo Domenico Bordini † | Priest | Bishop of Hvar (Lesina), Croatia |
| 6 Nov | | Born | Raffaele Carbonelli † | Napoli | Titular Bishop of Bethsaida |
| 9 Nov | | Born | Niccola Crispigni (Grispigni) † | Viterbo | Bishop of Foligno, Italy |
| 11 Nov | 60.2 | Ordained Bishop | Juan Agapito Ramírez Arellano † | Bishop of Gerona, Spain |
| 70.9 | Ordained Bishop | Lorenzo Suarez de Cantillana † | Bishop of Paraguay |
| 13 Nov | | Born | Mario Melini † | Montalcino | Bishop of Modigliana, Italy |
| 53.6 | Appointed | António de São José de Castro, O. Cart. † | Bishop of Porto, Portugal |
| 15 Nov | | Born | Joaquín Fernández Cortina † | Pendueles | Bishop of Sigüenza, Spain |
| 17 Nov | 57.9 | Died | Ignatius Batthyány † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| 53.9 | Appointed | Kasper Kazimierz Cieciszowski † | Bishop of Lutsk and Zhytomyr (Łuck and Zytomierz), Ukraine | Archbishop of Mohilev, Belarus |
| 49.2 | Appointed | Cyprian Odyniec, S.J. † | Auxiliary Bishop of Mohilev, Belarus |
| 49.2 | Appointed | Cyprian Odyniec, S.J. † | Titular Bishop of Hippo Diarrhytus | Auxiliary Bishop of Mohilev, Belarus |
| 18 Nov | | Born | Giuseppe Montieri † | Trevico | Bishop of Aquino, Sora, e Pontecorvo, Italy |
| 50.0 | Ordained Bishop | Francisco Sisternes de Oblites † | Archbishop of Oristano, Italy |
| 19 Nov | | Appointed | Edward Dillon † | Archbishop of Tuam, Ireland |
| 30 Nov | | Born | Jean-Baptiste-Pierre-Léonard Berteaud † | Limoges | Bishop Emeritus of Tulle, France |
| 24.0 | Ordained Priest | Luigi Bovio, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Melfi e Rapolla, Italy |
| Dec | 23.1 | Ordained Priest | Ludovico Micara, O.F.M. Cap. † | Priest | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 7 Dec | | Born | Lodewijk-Jozef Delebecque † | Wasteni | Bishop of Gent {Ghent, Gand}, Belgium |
| 8 Dec | | Born | Jean-Jacques-David Bardou † | Lautrec | Bishop of Cahors, France |
| 13 Dec | 78.7 | Died | Karl Friedrich von Zehmen † | Auxiliary Bishop of Warmia (Ermland), Poland |
| 14 Dec | 72.2 | Appointed | Francisco de Ibarra y Herrera † | Bishop of Caracas, Santiago de Venezuela | Archbishop of Caracas, Santiago de Venezuela |
| 16 Dec | | Born | Gil Estévez y Tomás † | Torá, Spain | Bishop of Tortosa, Spain |
| 70.5 | Died | Pascalis Petruccelli † | Bishop of Strongoli, Italy |
| 22 Dec | 24.0 | Ordained Priest | Geronimo do Barco, O.F.M. † | Priest of Order of Friars Minor | Bishop Emeritus of Santiago de Cabo Verde |
| 23.0 | Ordained Priest | Stephanus Scerra † | Priest | Titular Archbishop of Ancyra |
| 22.8 | Ordained Priest | Giulio de Tommasi † | Priest | Bishop of San Severo, Italy |
| 23 Dec | 87.6 | Died | Emericus Christovich † | Bishop of Csanád, Hungary |
| 30 Dec | | Born | Godehard Braun † | Vallendar | Auxiliary Bishop of Trier, Germany |
| 62.6 | Ordained Bishop | Francisco Ignacio Iñigo Angulo † | Bishop of Osma, Spain |