| Date | Age | Event | Bishop | Title | Current Title |
| 7 Jul | 50.5 | Ordained Bishop | James Caulfield † | Titular Bishop of Birtha | Bishop of Ferns, Ireland |
| 58.6 | Died | Giacomo Antonio Riccardini, O.F.M. Conv. † | Bishop Emeritus of Nicopoli, Bulgaria |
| 11 Jul | | Born | Pietro Naselli, C.O. † | | Bishop Emeritus of Piazza Armerina, Italy |
| 12 Jul | 57.9 | Died | Cayetano Adsor Paredes † | Patriarch of West Indies, Spain |
| 13 Jul | 77.2 | Died | José de Jesus Maria Cayetano Carvalho, O.P. † | Bishop of Castelo Branco, Portugal |
| 23 Jul | | Born | Santiago Rodríguez Gil, O.P. † | | Bishop of Lugo, Spain |
| 24 Jul | 61.8 | Died | Jacques de Grasse † | Bishop of Angers, France |
| 27 Jul | | Born | Luigi Paolo Maria Pochettini di Serravalle † | | Bishop of Ivrea, Italy |
| 28 Jul | | Born | Aristaces Azarian, C.M.Vd. † | | Abbot General of Congregazione Mechitarista di Vienna |
| 1 Aug | | Born | St. Eugène-Charles-Joseph de Mazenod, O.M.I. † | | Bishop of Marseille, France |
| 2 Aug | | Born | Johannes van Hooydonk † | | Bishop Emeritus of Breda, Netherlands |
| 3 Aug | 73.5 | Died | Giovanni Ottavio Bufalini † | Cardinal, Bishop of Ancona e Numana, Italy |
| 4 Aug | 55.5 | Selected | Michel-François de Couët du Vivier de Lorry † | Bishop of Angers, France | Bishop Emeritus of La Rochelle, France |
| 5 Aug | 72.1 | Died | Juan Manuel Merino y Lumbreras † | Bishop of Astorga, Spain |
| 7 Aug | 40.2 | Selected | José (Joseph) Cariati (Kariattil) † | Archbishop of Cranganore (Angamala), India |
| 8 Aug | 40.2 | Selected | António da Assunção, O.E.S.A. † | Bishop of São Tomé of Meliapore, India | Bishop-Elect |
| 41.9 | Selected | Cayetano Da Annunciação Brandão, T.O.R. † | Bishop of Belém do Pará, Brazil | Archbishop of Braga, Portugal |
| 45.2 | Selected | Alexandre da Sagrada Familia Ferreira da Silva, O.F.M. Ref. † | Bishop of Malacca, Singapore | Bishop of Angra, Portugal |
| 55.3 | Selected | Vicente Ferreira da Rocha, O.P. † | Bishop of Castelo Branco, Portugal |
| 36.2 | Selected | José António Pinto de Mendonça Arrais † | Bishop of Pinhel, Portugal | Bishop of Guarda, Portugal |
| 45.0 | Selected | Domingo do Rosario, O.P. † | Bishop of São Tomé e Príncipe |
| 11 Aug | 24.1 | Ordained Priest | Luís da Cunha de Abreu e Melo † | Priest | Bishop of Beja, Portugal |
| 38.5 | Selected | François de Gain de Montaignac † | Bishop of Tarbes, France | Bishop Emeritus |
| 13 Aug | | Born | Charles-Jean de la Motte de Broons et de Vauvert † | | Bishop of Vannes, France |
| 28 Aug | 79.7 | Died | Giulio Matteo Natali † | Bishop of Tivoli, Italy |
| 2 Sep | 59.8 | Selected | Giuseppe Monticelli † | Bishop of Ugento, Italy |
| 3 Sep | | Born | Benedict Joseph Fenwick, S.J. † | | Bishop of Boston, Massachusetts, USA |
| Born | Camillo Milana † | | Bishop of Nicosia, Italy |
| 4 Sep | | Born | Karel Boromejský Hanl z Kirchtreu † | | Bishop of Hradec Králové, Czechia |
| 7 Sep | 30.8 | Selected | Alexandre de Gouvea (Gouveia), T.O.R. † | Bishop of Peking [Beijing], China |
| 55.5 | Selected | José da Avé-Maria Leite da Costa e Silva, O.SS.T. † | Bishop of Angra, Portugal |
| 53.7 | Selected | André Teixeira Palha † | Coadjutor Bishop of Faro {Algarve}, Portugal | Bishop |
| 13 Sep | 47.4 | Appointed | František de Paula Hrzán z Harasova † | Cardinal-Priest of Santi Nereo ed Achilleo | Cardinal, Bishop of Szombathely, Hungary |
| 14 Sep | 69.3 | Died | Serafino Filangeri, O.S.B. † | Archbishop of Napoli {Naples}, Italy |
| 15 Sep | 25.5 | Ordained Deacon | Domenico Buttaoni † | Deacon | Bishop of Fabriano e Matelica, Italy |
| 53.0 | Ordained Bishop | Antonio María de los Reyes Almada, O.F.M. Obs. † | Bishop of Sonora, México |
| 24.8 | Ordained Priest | Konstantin Stanić † | Priest of Križevci (Kreutz) (Križevci), Croatia | Bishop |
| 19 Sep | | Born | Gioacchino Tamburini (Tamberini) † | | Bishop of Cervia, Italy |
| 20 Sep | 55.6 | Resigned | Michel-François de Couët du Vivier de Lorry † | Bishop of Tarbes, France | Bishop Emeritus of La Rochelle, France |
| 21 Sep | 22.8 | Ordained Priest | Antonio Barretta, C.R. † | Priest of Congregation of Clerics Regular | Archbishop Emeritus of Brindisi, Italy |
| 27.6 | Ordained Priest | Giovanni Battista Bussi † | Priest | Cardinal, Archbishop of Benevento, Italy |
| 25.5 | Ordained Priest | Domenico Buttaoni † | Priest | Bishop of Fabriano e Matelica, Italy |
| 22.9 | Ordained Priest | Lodovico Loschi † | Priest of Piacenza, Italy | Bishop |
| 24.8 | Ordained Priest | Giuseppe Menditto † | Priest | Auxiliary Bishop of Capua, Italy |
| 24.0 | Ordained Priest | Pietro Francesco Morali † | Priest | Archbishop of Firenze {Florence}, Italy |
| 24.6 | Ordained Priest | Agostino Olivieri, O.M.D. † | Priest of Clerics Regular of the Mother of God | Titular Bishop of Arethusa |
| 22.9 | Ordained Priest | Placido Maria Tadini, O.C.D. † | Priest of Order of Discalced Carmelites | Cardinal, Archbishop of Genova, Italy |
| 23 Sep | 51.9 | Appointed | Pietro Boscarini † | Bishop of Città di Castello, Italy |
| 44.8 | Appointed | Aloisio Buonamici † | Bishop of Volterra, Italy |
| 55.7 | Confirmed | Michel-François de Couët du Vivier de Lorry † | Bishop of Angers, France | Bishop Emeritus of La Rochelle, France |
| 53.7 | Appointed | Francesco Saverio Cristiani, O.E.S.A. † | Titular Bishop of Porphyreon |
| 60.2 | Appointed | Juan Manuel Antonio Ramos Lora, O.F.M. Obs. † | Bishop of Mérida, Venezuela |
| 62.4 | Appointed | Wojciech Józef Gadomski † | Auxiliary Bishop of Płock, Poland |
| 62.4 | Appointed | Wojciech Józef Gadomski † | Titular Bishop of Benda | Auxiliary Bishop of Płock, Poland |
| 38.7 | Confirmed | François de Gain de Montaignac † | Bishop of Tarbes, France | Bishop Emeritus |
| 44.5 | Appointed | Antonio Maria Gardini, O.S.B. † | Bishop of Crema, Italy |
| 49.9 | Appointed | Franciszek Alojzy Junosza Gzowski † | Auxiliary Bishop of Vilnius, Lithuania |
| 49.9 | Appointed | Franciszek Alojzy Junosza Gzowski † | Titular Bishop of Thespiae | Auxiliary Bishop of Vilnius, Lithuania |
| Born | Johann Michael Leonhard † | | Bishop of Austria, Military |
| 39.8 | Appointed | Antonin Malinowski, O.P. † | Auxiliary Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 39.8 | Appointed | Antonin Malinowski, O.P. † | Titular Bishop of Cinna | Auxiliary Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 36.5 | Appointed | Cesare Muni e Forno † | Auxiliary Bishop of Messina, Italy | Auxiliary Bishop-Elect |
| 36.5 | Appointed | Cesare Muni e Forno † | Titular Bishop of Chrysopolis in Arabia | Auxiliary Bishop-Elect of Messina, Italy |
| 54.8 | Appointed | Guglielmo Pallotta † | Cardinal-Priest of Santa Maria degli Angeli | Cardinal, Prefect of the Congregation of the Council |
| 41.2 | Appointed | Piotr Aleksander Samson Toczyłowski † | Auxiliary Bishop of Vilnius, Lithuania |
| 41.2 | Appointed | Piotr Aleksander Samson Toczyłowski † | Titular Bishop of Belline | Auxiliary Bishop of Vilnius, Lithuania |
| 24 Sep | 85.4 | Died | Jean-Antoine de Tinseau † | Bishop of Nevers, France |
| 26 Sep | 45.2 | Died | August Franz von Strauß (Strauss) † | Auxiliary Bishop of Mainz, Germany |
| 27 Sep | 34.3 | Appointed | Antonius van Alphen † | Coadjutor Vicar Apostolic of ’s-Hertogenbosch (Bois-le-Duc), Netherlands | Vicar Apostolic |
| 28 Sep | | Born | Leone Niccolai, O. Cart. † | | Bishop of Pistoia e Prato, Italy |
| 29 Sep | 51.9 | Ordained Bishop | Pietro Boscarini † | Bishop of Città di Castello, Italy |
| 53.7 | Ordained Bishop | Francesco Saverio Cristiani, O.E.S.A. † | Titular Bishop of Porphyreon |
| 44.5 | Ordained Bishop | Antonio Maria Gardini, O.S.B. † | Bishop of Crema, Italy |
| 1 Oct | 73.7 | Selected | Manuel Buenaventura Figueroa Barrero † | Patriarch of West Indies, Spain |
| 6 Oct | 29.7 | Ordained Priest | Giovanni Francesco Guerrieri † | Priest | Bishop Emeritus of Rimini, Italy |
| 11 Oct | | Born | Pierre-Antoine Tabeau † | | Auxiliary Bishop-Elect of Québec, Canada |
| 55.5 | Died | Friedrich Ludwig Franz von Wangen zu Geroldseck † | Bishop of Basel, Switzerland |
| 12 Oct | 55.7 | Died | Giuseppe Maria Incisa Beccaria † | Archbishop of Sassari, Italy |
| 13 Oct | 43.4 | Selected | Pierre de Séguiran † | Bishop of Nevers, France |
| 20 Oct | 38.7 | Ordained Bishop | François de Gain de Montaignac † | Bishop of Tarbes, France | Bishop Emeritus |
| Born | Pedro Alcántara Jiménez, O. Praem. † | | Vicar Apostolic of Montevideo, Uruguay |
| 21 Oct | 43.0 | Selected | Ioan (Janos) Bob (Babb) † | Bishop of Făgăraş (Romanian), Romania |
| Born | Francesco Gentilini † | | Bishop Emeritus of Rimini, Italy |
| 53.2 | Ordained Bishop | Francisco López Sánchez † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 6 Nov | 79.4 | Died | Felix de Paù † | Bishop of Tropea, Italy |
| 10 Nov | 22.9 | Ordained Priest | Giuseppe Perugini, O.E.S.A. † | Priest of Order of Hermits of St. Augustine | Titular Bishop of Porphyreon |
| 17 Nov | | Born | Domenico Maria Cilluffo e Costa † | | Titular Archbishop of Adana |
| 18 Nov | 77.2 | Died | Marco Aurelio Petruccelli † | Bishop of Nardò, Italy |
| 24 Nov | 75.6 | Died | Stefano Evodio Assemani † | Titular Archbishop of Apamea in Syria dei Maroniti |
| 24.1 | Ordained Priest | Bernardino D’Avolio, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Trivento, Italy |
| 25 Nov | 64.1 | Died | João António Barbosa Soares † | Bishop of Viseu, Portugal |
| 52.1 | Resigned | Vicente do Espirito Santo, O.A.D. † | Bishop of São Tomé e Príncipe | Prelate of Goiás, Brazil |
| 56.1 | Selected | Franz Joseph Sigismund von Roggenbach † | Bishop of Basel, Switzerland |
| 29 Nov | | Born | Josip Kuković † | | Bishop Emeritus of Bosna (Djakovo) et Srijem, Croatia |
| 3 Dec | | Born | Giuseppe Grasser † | | Bishop of Verona, Italy |
| 9 Dec | 86.9 | Died | Ludovico Calini † | Cardinal, Bishop Emeritus of Crema, Italy |
| 16 Dec | 40.6 | Confirmed | António da Assunção, O.E.S.A. † | Bishop of São Tomé of Meliapore, India | Bishop-Elect |
| 42.2 | Confirmed | Cayetano Da Annunciação Brandão, T.O.R. † | Bishop of Belém do Pará, Brazil | Archbishop of Braga, Portugal |
| 65.8 | Appointed | Antonio Bucci † | Titular Bishop of Orthosias in Caria |
| 71.9 | Appointed | Giuseppe Maria Capece Zurlo, C.R. † | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 71.9 | Elevated to Cardinal | Giuseppe Maria Capece Zurlo, C.R. † | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 40.6 | Confirmed | José (Joseph) Cariati (Kariattil) † | Archbishop of Cranganore (Angamala), India |
| 40.3 | Appointed | Barnaba (Gregorio) Chiaramonti, O.S.B. † | Bishop of Tivoli, Italy | Pope (Roma {Rome}, Italy) |
| 32.7 | Appointed | Etienne-André-François de Paule de Fallot de Béaupré de Beaumont † | Coadjutor Bishop of Vaison, France | Bishop Emeritus |
| 32.7 | Appointed | Etienne-André-François de Paule de Fallot de Béaupré de Beaumont † | Titular Bishop of Sebastopolis in Armenia | Bishop Emeritus of Vaison, France |
| 45.5 | Confirmed | Alexandre da Sagrada Familia Ferreira da Silva, O.F.M. Ref. † | Bishop of Malacca, Singapore | Bishop of Angra, Portugal |
| 55.6 | Confirmed | Vicente Ferreira da Rocha, O.P. † | Bishop of Castelo Branco, Portugal |
| 73.9 | Appointed | Manuel Buenaventura Figueroa Barrero † | Titular Archbishop of Laodicea in Phrygia | Patriarch of West Indies, Spain |
| 73.9 | Confirmed | Manuel Buenaventura Figueroa Barrero † | Patriarch of West Indies, Spain |
| 67.9 | Elevated to Cardinal | Raniero Finocchietti † | In Pectore | Cardinal, Cardinal-Deacon of Sant’Agata de’ Goti |
| 31.1 | Confirmed | Alexandre de Gouvea (Gouveia), T.O.R. † | Bishop of Peking [Beijing], China |
| 55.8 | Confirmed | José da Avé-Maria Leite da Costa e Silva, O.SS.T. † | Bishop of Angra, Portugal |
| 36.5 | Confirmed | José António Pinto de Mendonça Arrais † | Bishop of Pinhel, Portugal | Bishop of Guarda, Portugal |
| 60.1 | Confirmed | Giuseppe Monticelli † | Bishop of Ugento, Italy |
| 45.3 | Confirmed | Domingo do Rosario, O.P. † | Bishop of São Tomé e Príncipe |
| 51.9 | Appointed | Niccolò Sciarelli † | Bishop of Colle di Val d’Elsa, Italy |
| 43.6 | Confirmed | Pierre de Séguiran † | Bishop of Nevers, France |
| 45.0 | Appointed | Camillo de Simeoni † | Cardinal, Bishop of Nepi e Sutri, Italy |
| 54.0 | Appointed | André Teixeira Palha † | Titular Bishop of Tricca | Bishop of Faro {Algarve}, Portugal |
| 54.0 | Confirmed | André Teixeira Palha † | Coadjutor Bishop of Faro {Algarve}, Portugal | Bishop |
| 60.1 | Appointed | Rafael José Verger y Suau, O.F.M. Obs. † | Bishop of Linares o Nueva León, Nuevo León, México |
| 17 Dec | | Born | José Miguel Carrión y Valdivieso † | | Auxiliary Bishop of Quito, Ecuador |
| 52.1 | Appointed | Vicente do Espirito Santo, O.A.D. † | Prelate of Goiás, Brazil |
| 21 Dec | 24.1 | Ordained Priest | Giovanni Baptist Maria Angelini † | Priest of Palermo, Italy | Titular Bishop of Megara |
| 24.1 | Ordained Priest | Gaetano Maria Avarna † | Priest of Messina, Italy | Bishop of Nicosia, Italy |
| 40.3 | Ordained Bishop | Barnaba (Gregorio) Chiaramonti, O.S.B. † | Bishop of Tivoli, Italy | Pope (Roma {Rome}, Italy) |
| 32.7 | Ordained Bishop | Etienne-André-François de Paule de Fallot de Béaupré de Beaumont † | Titular Bishop of Sebastopolis in Armenia | Bishop Emeritus of Vaison, France |
| 23.0 | Ordained Priest | Angiolo Maria Gilardoni † | Priest | Bishop of Pistoia e Prato, Italy |
| 24.3 | Ordained Priest | Bartolomeo Goglia † | Priest | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| 28.5 | Ordained Priest | Louis-Sylvestre de La Châtre † | Priest | Titular Bishop of Hemeria (Himeria) |
| 23.1 | Ordained Priest | Giuseppe Crispino Mazzotti † | Priest | Bishop of Cervia, Italy |
| 60.1 | Ordained Bishop | Giuseppe Monticelli † | Bishop of Ugento, Italy |
| 24.3 | Ordained Priest | Francesco Maria Paolucci Mancinelli † | Priest | Bishop of Fano, Italy |
| 24.9 | Ordained Priest | Giuseppe Segna † | Priest of Marsi, Italy | Bishop |
| 24.1 | Ordained Priest | Bartolomeo Varrone † | Priest | Bishop of Sessa Aurunca, Italy |
| 22.9 | Ordained Priest | Georg Michael Wittmann † | Priest of Regensburg, Germany | Auxiliary Bishop |
| 22 Dec | | Born | Benedetto Francesco Paolo Antonio Denti, O.S.B. † | | Bishop of Caltagirone, Italy |
| 40.0 | Ordained Bishop | Antonin Malinowski, O.P. † | Titular Bishop of Cinna | Auxiliary Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 51.9 | Ordained Bishop | Niccolò Sciarelli † | Bishop of Colle di Val d’Elsa, Italy |
| 25 Dec | 15.1 | Professed | Raphael Lupoli, C.Ss.R. † | Member of Congregation of the Most Holy Redeemer | Bishop of Larino, Italy |
| 26 Dec | 75.8 | Died | Wilhelm Anton von der Asseburg zu Hinnenburg † | Bishop of Paderborn, Germany |
| 48.7 | Died | Scipione Borghèse † | Cardinal, Prefect Emeritus of the Prefecture of the Papal Household |
| 55.7 | Succeeded | Friedrich Wilhelm von Westphalen † | Bishop of Paderborn, Germany | Bishop of Hildesheim, Germany |
| 29 Dec | 50.2 | Ordained Bishop | Franciszek Alojzy Junosza Gzowski † | Titular Bishop of Thespiae | Auxiliary Bishop of Vilnius, Lithuania |
| 41.4 | Ordained Bishop | Piotr Aleksander Samson Toczyłowski † | Titular Bishop of Belline | Auxiliary Bishop of Vilnius, Lithuania |
| 30 Dec | | Born | Pedro de Santa Mariana e Souza, O.C.D. † | | Auxiliary Bishop of São Sebastião do Rio de Janeiro, Brazil |