| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Clément Michael Bahous † | | Patriarch Emeritus of Antiochia {Antioch} (Melkite Greek), Syria |
| 56.2 | Selected | [Louis-Charles Bisson] † | Bishop of [Calvados (Constitutional), France] | Bishop Emeritus |
| 35.7 | Ordained Priest | James Yorke Bramston † | Priest of London District, England, Great Britain | Vicar Apostolic |
| Born | Giovanni Battista Cannella † | | Secretary Emeritus of the Congregation for Extraordinary Ecclesiastical Affairs |
| 60.3 | Selected | [André Champsaud] † | Bishop of [Basses-Alpes (Constitutional), France] | Bishop Emeritus |
| 65.4 | Ordained Priest | Ludovico Flangini Giovanelli † | Priest | Cardinal, Patriarch of Venezia {Venice}, Italy |
| 44.8 | Ordained Bishop | José González de Cándamo y Cauniego † | Titular Bishop of Mylasa | Auxiliary Bishop of San Cristobal de la Habana, Cuba |
| 22.5 | Ordained Priest | Jan Marceli Gutkowski † | Priest of Order of Friars Preachers | Bishop Emeritus of Janów Podlaski (Podlaska o Janów), Poland |
| 51.5 | Selected | [Charles-Robert Lamy] † | Bishop of [Eure (Constitutional), France] | Bishop Emeritus |
| 79.0 | Died | Tommaso Mancini † | Bishop Emeritus of Città della Pieve, Italy | Bishop |
| 24.8 | Ordained Priest | Manuel Martínez Ferro, O. de M. † | Priest of Order of Our Lady of Mercy | Bishop of Málaga, Spain |
| 26.0 | Ordained Priest | Pedro Martínez de San Martín † | Priest | Bishop of Barcelona, Spain |
| 25.2 | Ordained Priest | Miguel Orozco † | Priest | Bishop-Elect of La Paz, Bolivia |
| 87.4 | Died | Filippo Paini † | Bishop of Valva e Sulmona, Italy |
| 69.0 | Died | Giuseppe Domenico Porqueddu † | Bishop of Iglesias, Italy |
| 73.6 | Died | Pasquale Sansone † | Bishop of Ischia, Italy |
| 1 Jan | 22.6 | Ordained Priest | Luigi Emmanuele Nicolo Lambruschini, B. † | Priest of Clerics Regular of St. Paul | Cardinal, Prefect of the Congregation of (Sacred) Rites |
| 59.4 | Died | Niccolò Marcacci † | Bishop of Arezzo, Italy |
| 2 Jan | 63.3 | Died | János Szily † | Bishop of Szombathely, Hungary |
| 6 Jan | 78.8 | Died | Jean Jacques (Johann Jakob) Lantz † | Auxiliary Bishop of Strasbourg, France |
| 8 Jan | 62.6 | Died | Francisco Ignacio Iñigo Angulo † | Bishop of Osma, Spain |
| 13 Jan | 53.7 | Appointed | Antonio Despuig y Dameto † | Titular Patriarch of Antiochia {Antioch} | Cardinal, Archbishop Emeritus of Sevilla {Seville}, Spain |
| 78.9 | Died | Giovanni Francesco Guidi di Bagno-Talenti † | Titular Patriarch of Antiochia {Antioch} |
| 54.0 | Ordained Bishop | James O’Shaughnessy † | Titular Bishop of Samosata | Bishop of Killaloe, Ireland |
| 14 Jan | | Born | Juan Hilario Bosset (Boset) † | | Bishop of Mérida, Venezuela |
| 22 Jan | 70.1 | Died | Francisco Javier Cabrera Velasco † | Bishop of Ávila, Spain |
| Born | Edoardo Hurmuz, C.M.V. † | | Titular Bishop of Siraces |
| 71.0 | Died | Lorenzo Suarez de Cantillana † | Bishop of Paraguay (o Ssma Assunzione) |
| 23 Jan | 75.4 | Died | François-Gaspard de Jouffroy de Gonssans † | Bishop of Le Mans, France |
| 26 Jan | 74.7 | Died | Carlo Rezzonico (Jr.) † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 2 Feb | 67.0 | Died | Feliciano Alonso, O.P. † | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 37.1 | Succeeded | St. Ignacio Clemente Delgado Cebrián, O.P. † | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 7 Feb | 16.1 | Professed | Pedro de Santa Mariana e Souza, O.C.D. † | Member of Order of Discalced Carmelites | Auxiliary Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 9 Feb | 62.4 | Died | Giovanni Archinto † | Cardinal, Cardinal-Bishop of Sabina |
| 10 Feb | 56.4 | Ordained Bishop | [Julien Jean-Baptiste Duchemin] † | Bishop of [Calvados (Constitutional), France] |
| 11 Feb | 63.4 | Died | John Geddes † | Coadjutor Vicar Apostolic Emeritus of Lowland District, Scotland, Great Britain |
| 60.9 | Died | Giuseppe Gioacchino Lovera † | Bishop of Saluzzo, Italy |
| 16 Feb | 23.4 | Ordained Priest | Mariano Bianco † | Priest | Archbishop Emeritus of Amalfi, Italy |
| 24.6 | Ordained Priest | Martino Leonardo Brandaglia † | Priest | Bishop of Fiesole, Italy |
| 24.6 | Ordained Priest | Cassiodoro Margarita † | Priest | Bishop of Gravina e Irsina (Montepeloso), Italy |
| 17 Feb | 71.5 | Died | Alexandre da Silva Pedrosa Guimarães † | Bishop Emeritus of Macau, China |
| 22 Feb | 58.0 | Died | Johann Baptist Lachenbauer, O.Cr. † | Bishop of Brno, Czechia |
| 24 Feb | 26.9 | Ordained Priest | Giovanni Bindi Sergardi † | Priest | Bishop of Montalcino, Italy |
| 58.4 | Ordained Bishop | Pedro Díaz Valdés † | Bishop of Barcelona, Spain |
| 68.0 | Died | Giovanni Andrea Serrao † | Bishop of Potenza, Italy |
| 49.2 | Ordained Bishop | José Valério da Cruz, C.O. † | Bishop of Portalegre, Portugal |
| 27 Feb | 28.4 | Ordained Deacon | Mateusz Lipski † | Deacon of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Minsk, Belarus |
| 28 Feb | | Born | Giovanni Rosati † | | Bishop Emeritus of Todi, Italy |
| 4 Mar | | Born | Casimir-Alexis-Joseph Wicart † | | Bishop Emeritus of Laval, France |
| 5 Mar | | Born | Guy-Louis-Jean-Marie Alouvry † | | Bishop Emeritus of Pamiers, France |
| 6 Mar | | Born | Giuseppe Maria d’Alessandro † | | Bishop of Sessa Aurunca, Italy |
| 28.4 | Ordained Priest | Mateusz Lipski † | Priest of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Minsk, Belarus |
| 7 Mar | 78.5 | Died | Bartolomeu Manoel Mendes dos Reis † | Bishop Emeritus of Mariana, Brazil |
| 8 Mar | 58.7 | Died | Paolo Pozzuoli † | Bishop of Sant’Agata de’ Goti, Italy |
| 9 Mar | 26.5 | Ordained Deacon | Raffaello de Ghantuz Cubbe † | Deacon | Bishop of Livorno, Italy |
| 24.1 | Ordained Priest | Nicola Giuseppe Ugo † | Priest | Archbishop of Sorrento, Italy |
| 10 Mar | 42.1 | Ordained Bishop | Mikołaj Skorodyński † | Bishop of Lviv (Ukrainian), Ukraine |
| 12 Mar | 80.9 | Died | François d’Etienne de Prunières de Saint-Jean † | Bishop of Grasse, France |
| 13 Mar | 21.8 | Ordained Priest | Luis María Borbón y Vallábriga † | Priest of Toledo, Spain | Cardinal, Archbishop |
| 14 Mar | 53.1 | Selected | József Mártonfi † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania |
| 15 Mar | 21.8 | Appointed | Luis María Borbón y Vallábriga † | Archbishop of Sevilla {Seville}, Spain | Cardinal, Archbishop of Toledo, Spain |
| 73.8 | Died | Károly Esterházy de Galántha † | Bishop of Eger, Hungary |
| 23.2 | Ordained Priest | Francisco Xavier de Garaycoa Llaguno † | Priest of Cuenca, Ecuador | Archbishop of Quito, Ecuador |
| 24.1 | Ordained Priest | Felice Greco † | Priest | Bishop of San Marco e Bisignano, Italy |
| 16 Mar | 58.2 | Appointed | Giovanni Battista Fonton, O.F.M. Conv. † | Vicar Apostolic of Constantinople, Turkey |
| 58.2 | Appointed | Giovanni Battista Fonton, O.F.M. Conv. † | Titular Archbishop of Marcianopolis | Vicar Apostolic of Constantinople, Turkey |
| 49.3 | Installed | José Valério da Cruz, C.O. † | Bishop of Portalegre, Portugal |
| 23 Mar | 53.9 | Resigned | Antonio Despuig y Dameto † | Archbishop of Sevilla {Seville}, Spain | Cardinal, Archbishop Emeritus |
| 32.2 | Ordained Deacon | Andrzej Benedykt Kłągiewicz † | Deacon | Bishop of Vilnius, Lithuania |
| 22.9 | Ordained Priest | Giuseppe Pecci † | Priest of Gubbio, Italy | Cardinal, Bishop |
| 28 Mar | 54.4 | Appointed | Michal Franciszek Karpowicz, C.M. † | Bishop of Wigry, Poland |
| 68.1 | Appointed | Juan de Moya de la Torre, O.F.M. Obs. † | Archbishop (Personal Title) of Osma, Spain | Bishop Emeritus |
| 61.0 | Appointed | Teodozy Wisłocki, O.S.B.M. † | Bishop of Supraśl (Ukrainian), Belarus |
| 29 Mar | 61.8 | Selected | Salvator Giuseppe Mammeli † | Bishop of Alghero, Italy | Bishop-Elect |
| 60.1 | Selected | Gavino Murro † | Bishop of Bosa, Italy | Archbishop of Sassari, Italy |
| 31 Mar | 56.5 | Died | [Julien Jean-Baptiste Duchemin] † | Bishop of [Calvados (Constitutional), France] |
| 71.2 | Ordained Bishop | Giovanni Battista Simon † | Archbishop of Sassari, Italy |
| 3 Apr | 69.1 | Died | Filippo d’Ambrogio † | Bishop of Caiazzo, Italy |
| 51.7 | Selected | [Alexandre-Victor Rouanet] † | Bishop of [Hérault (Constitutional), France] | Bishop Emeritus |
| 4 Apr | | Born | Guerr’Antonio Boscarini † | | Bishop of Urbania e Sant’Angelo in Vado, Italy |
| 7 Apr | 42.5 | Ordained Bishop | [Charles-François Dorlodot] † | Bishop of [Mayenne (Constitutional), France] | Bishop Emeritus |
| 10 Apr | 77.7 | Died | [Dominique Pouderoux] † | Bishop of [Hérault (Constitutional), France] |
| 12 Apr | | Born | Niccola Paracciani Clarelli † | | Cardinal, Prefect of the Congregation of the Reverend Fabric of St. Peter |
| 15 Apr | 64.9 | Died | Yves-Alexandre de Marbeuf † | Archbishop of Lyon, France |
| 51.4 | Appointed | Rafael de Múzquiz y Aldunate † | Archbishop (Personal Title) of Ávila, Spain | Archbishop of Santiago de Compostela, Spain |
| 17 Apr | 73.3 | Died | Jose Martinez Palomino y Lopez de Lorena † | Bishop Emeritus of Chiapas (Ciudad Real de Chiapas), México |
| May | 43.1 | Resigned | Lorenzo Litta † | Apostolic Nuncio to Russian Federation | Cardinal, Prefect of the Congregation for Residence of Bishops |
| 1 May | | Born | Giacomo Bernardi † | | Bishop of Massa Carrara, Italy |
| 5 May | 60.7 | Ordained Bishop | [André Champsaud] † | Bishop of [Basses-Alpes (Constitutional), France] | Bishop Emeritus |
| 6 May | 51.3 | Resigned | Nicolao Lorenzo Timoni † | Vicar Apostolic of Constantinople, Turkey | Bishop of Chios (Scio), Greece |
| 51.3 | Resigned | Nicolao Lorenzo Timoni † | Titular Archbishop of Marcianopolis | Bishop of Chios (Scio), Greece |
| 7 May | 70.4 | Died | Gennaro Clemente Francone † | Bishop of Troia, Italy |
| Born | Michelangelo Pieramico † | | Bishop of Potenza e Marsico Nuovo, Italy |
| 9 May | | Born | Eleonoro Aronne † | | Bishop of Montalto (delle Marche), Italy |
| 12 May | 22.3 | Ordained Deacon | José Hurtado de Mendoza † | Deacon | Auxiliary Bishop-Elect of Córdoba (Tucumán), Argentina |
| 14 May | | Born | Jan Mikołaj Kaliński † | | Bishop-Elect of Chełm and Bełz (Ukrainian), Poland |
| 15 May | 62.9 | Died | Jules-Basile Ferron de La Ferronnays † | Bishop of Lisieux, France |
| 18 May | 12.5 | Ordained Priest | Raffaele Blundo † | Priest | Archbishop of Taranto, Italy |
| 26.7 | Ordained Priest | Raffaello de Ghantuz Cubbe † | Priest | Bishop of Livorno, Italy |
| 32.3 | Ordained Priest | Andrzej Benedykt Kłągiewicz † | Priest | Bishop of Vilnius, Lithuania |
| 24.1 | Ordained Priest | Vitaliano Provenzano † | Priest of Catanzaro, Italy | Auxiliary Bishop |
| 22 May | 63.6 | Died | [François-Antoine Brendel] † | Bishop Emeritus of [Bas-Rhin (Constitutional), France] |
| 25 May | 66.4 | Died | Tommaso Maria Francone, C.R. † | Archbishop of Manfredonia, Italy |
| 26 May | 86.3 | Died | Ignazio Andrea Sambiase, C.R. † | Archbishop of Conza, Italy |
| 28 May | | Born | José Antonio de la Peña y Navarro † | | Bishop of Zamora, Michoacán, México |
| 31 May | 65.5 | Died | Félix Rico Rico † | Bishop of Teruel, Spain |
| 1 Jun | 66.4 | Died | Augustin Botoš-Okić (Occhich), O.F.M. Obs. † | Vicar Apostolic of Bosnia (Ottoman), Croatia |
| 62.6 | Succeeded | Grgo Ilijić, O.F.M. Obs. † | Vicar Apostolic of Bosnia (Ottoman), Croatia | Titular Bishop of Ruspae |
| 2 Jun | 22.0 | Ordained Bishop | Luis María Borbón y Vallábriga † | Archbishop of Sevilla {Seville}, Spain | Cardinal, Archbishop of Toledo, Spain |
| 4 Jun | 51.9 | Died | [Jean-Baptiste Gratien (Graziani)], C.M. † | Bishop of [Seine-Inférieure (Constitutional), France] |
| 7 Jun | | Born | Leo Raymond de Neckère, C.M. † | | Bishop of New Orleans, Louisiana, USA |
| 15 Jun | | Born | Luigi Giuseppe Anselmo Natoli † | | Archbishop of Messina, Italy |
| 22 Jun | | Born | Joseph-Armand Gignoux † | | Bishop of Beauvais (-Noyon-Senlis), France |
| 24 Jun | 73.5 | Died | Luigi (Michael) Spagnoletti, O.F.M. Obs. † | Archbishop of Dubrovnik (Ragusa), Croatia |