| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 35.9 | Appointed | François Bareau de Girac † | Bishop of Saint-Brieuc, France | Bishop Emeritus of Rennes, France |
| 34.0 | Appointed | Emmanuel-François de Bausset-Roquefort † | Bishop of Fréjus, France | Bishop Emeritus |
| 62.7 | Resigned | Martin du Bellay † | Bishop of Fréjus, France | Bishop Emeritus |
| Died | Nicolò Caracciolo, C.R. † | Archbishop of Otranto, Italy |
| 49.0 | Appointed | Joseph-Dominique de Cheylus † | Bishop of Cahors, France | Bishop of Bayeux, France |
| Appointed | Miguel Cilieza y Velasco † | Auxiliary Bishop of Guatemala (Santiago de Guatemala), Guatemala | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| Appointed | Miguel Cilieza y Velasco † | Titular Bishop of Adramyttium | Bishop of Chiapas (Ciudad Real de Chiapas), Chiapas, México |
| Born | Francesco Saverio Dracopoli † | Chios | Bishop of Chios (Scio), Greece |
| Died | Antonio Guglielmi † | Archbishop of Urbino, Italy |
| 49.0 | Appointed | Andrzej Mikolaj Stanislaw Kostka Mlodziejowski † | Bishop of Przemyśl, Poland | Bishop of Poznań, Poland |
| 52.6 | Appointed | Domenico Monti † | Archbishop of Urbino, Italy |
| 76.0 | Died | Marcello Papiniano-Cusani † | Archbishop Emeritus of Palermo, Italy |
| 76.9 | Died | Nicola Paolo Pandolfelli † | Bishop of Mottola (Motula), Italy |
| 57.3 | Resigned | Matteo Gennaro Testa Piccolomini † | Archbishop of Reggio Calabria, Italy | Archbishop Emeritus |
| 28.2 | Ordained Priest | Iwo Onufry Rogowski † | Priest of Poznań, Poland | Auxiliary Bishop of Chelmno (Culma), Poland |
| 38.3 | Appointed | Jean-Marc de Royére † | Bishop of Tréguier, France | Bishop Emeritus of Castres, France |
| 23.8 | Ordained Priest | William Gregory Sharrock, O.S.B. † | Priest of Order of Saint Benedict | Vicar Apostolic of Western District, England, Great Britain |
| Died | António de Sousa † | Bishop of Porto, Portugal |
| Died | Diego Andrea Tomacelli † | Bishop of Marsico Nuovo, Italy |
| Appointed | Andrea Tortona † | Bishop of Marsico Nuovo, Italy |
| 61.0 | Died | Walenty Franciszek Wężyk † | Bishop of Przemyśl, Poland |
| 9 Jan | 71.9 | Died | Valentín Moran Menéndez, O. de M. † | Bishop Emeritus of Islas Canarias {Canary Islands}, Spain |
| 10 Jan | | Born | Louis-Guillaume-Valentin Dubourg, P.S.S. † | Cap Français, Dominican Republic | Archbishop of Besançon, France |
| 17 Jan | 66.7 | Died | Asensio Sales † | Bishop of Barcelona, Spain |
| Born | Juan Baltasar Toledano † | El Campillo | Bishop of Valladolid, Spain |
| 19 Jan | | Born | Johann Martin Manl † | Mainz | Bishop of Eichstätt, Germany |
| 20 Jan | 55.1 | Died | Francisco San Andrés, O.S.H. † | Auxiliary Bishop of Salamanca, Spain |
| 21 Jan | 51.0 | Appointed | Jean-Olivier Briand † | Bishop of Québec, Québec, Canada | Bishop Emeritus |
| 22 Jan | 45.1 | Appointed | Jerónimo Rogado de Carvalhal e Silva † | Bishop of Portalegre, Portugal | Bishop of Guarda, Portugal |
| Appointed | Girard, C.S.Sp. † | Prefect of Iles Saint-Pierre et Miquelon |
| 23 Jan | 70.1 | Died | Jean-François de La Cropte de Bourzac † | Bishop of Noyon, France |
| 25 Jan | | Born | Pablo Colmenares, O.S.B. † | Autol | Bishop of Lérida, Spain |
| 26 Jan | | Born | Francisco de São Luiz (Manoel Justiniano) Saraiva, O.S.B. † | Ponte de Lima, Portugal | Cardinal, Patriarch of Lisboa, Portugal |
| 63.1 | Died | Hervé-Nicolas Thépault de Brignou † | Bishop of Saint-Brieuc, France |
| 27 Jan | 60.4 | Appointed | Ludovico Terin Bonesio, O.F.M. Cap. † | Bishop of Bobbio, Italy |
| 57.9 | Appointed | Giovanni Hieronymo Gradenigo, C.R. † | Archbishop of Udine, Italy |
| 8 Feb | | Born | Jean-Paul-Gaston de Pins † | Castre | Apostolic Administrator Emeritus of Lyon (-Vienne), France |
| 10 Feb | | Born | Carlo Pio Ravasi, O.S.B. † | Crema | Bishop of Adria, Italy |
| 22 Feb | 26.8 | Ordained Priest | Edmund Maria Josef Graf Artz von und zu Vasegg † | Priest of Trento, Italy | Auxiliary Bishop of Wien {Vienna}, Austria |
| 24.1 | Ordained Priest | Filippo Angelico Becchetti, O.P. † | Priest of Order of Friars Preachers | Bishop Emeritus of Città della Pieve, Italy |
| 23.1 | Ordained Priest | Paolo Giuseppe Solaro † | Priest | Cardinal, Bishop Emeritus of Aosta, Italy |
| 26 Feb | 39.0 | Appointed | Thomas Joseph Talbot † | Coadjutor Vicar Apostolic of Midland District, England, Great Britain | Vicar Apostolic |
| 39.0 | Appointed | Thomas Joseph Talbot † | Titular Bishop of the Titular See | Vicar Apostolic of Midland District, England, Great Britain |
| Mar | | Born | Alexander Paterson † | Pathhead | Vicar Apostolic of Eastern District, Scotland, Great Britain |
| 39.0 | Ordained Bishop | Thomas Joseph Talbot † | Titular Bishop of the Titular See | Vicar Apostolic of Midland District, England, Great Britain |
| 1 Mar | 31.3 | Appointed | Charles de Broglie † | Bishop of Noyon, France |
| 12 Mar | | Born | Francisco Javier Cienfuegos Jovellanos † | Oviedo | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 15 Mar | 38.8 | Ordained Priest | Friedrich Ludwig Franz Reichsfreiherr von Wangen zu Geroldseck † | Priest of Basel, Switzerland | Bishop |
| 23.0 | Ordained Priest | Johann Nepomuk Freiherr von Wolf † | Priest of Regensburg, Germany | Bishop |
| 16 Mar | 51.1 | Ordained Bishop | Jean-Olivier Briand † | Bishop of Québec, Québec, Canada | Bishop Emeritus |
| 18 Mar | 77.7 | Died | Diego Rivera Higuera, O. de M. † | Bishop of Barbastro, Spain |
| 4 Apr | 45.2 | Appointed | Johann Moritz Freiherr von Strachwitz † | Apostolic Administrator of Wrocław, Poland |
| Born | Pierre Trenchant, M.E.P. † | Vassy, France | Coadjutor Vicar Apostolic of Se-Ciuen (Setchoan), China |
| 13 Apr | | Appointed | Tommaso Battiloro † | Bishop of San Severo, Italy | Bishop Emeritus |
| 57.7 | Died | Esteban Villanova Colomer † | Bishop of Tarazona, Spain |
| 14 Apr | 34.3 | Appointed | Louis-François-Marc Hilaire de Conzié † | Bishop of Saint-Omer, France | Bishop of Arras, France |
| 43.6 | Appointed | Francisco Antonio de Lorenzana y Butrón † | Archbishop of México, Federal District | Cardinal, Archbishop Emeritus of Toledo, Spain |
| 37.6 | Appointed | Basilio Tomás Sancho Hernando (de Santas Justa y Rufina), Sch. P. † | Archbishop of Manila, Philippines |
| 39.9 | Appointed | Giovanni Battista Filippo Tenderini † | Bishop of Anagni, Italy |
| 20 Apr | 44.1 | Ordained Bishop | Juan Molina Lario y Navarro † | Bishop of Albarracin, Spain | Bishop of Málaga, Spain |
| 22 Apr | | Born | Antoine Martinet † | Queige | Archbishop of Chambéry, France |
| 27 Apr | | Born | Vincenzo-Maria Armentano, O.P. † | Mormanno | Bishop of Mileto, Italy |
| 4 May | | Born | Pietro Giovanni Zanardi † | Fontevivo | Bishop of Guastalla, Italy |
| 11 May | 34.3 | Ordained Bishop | Louis-François-Marc Hilaire de Conzié † | Bishop of Saint-Omer, France | Bishop of Arras, France |
| 65.4 | Died | Romualdo Velarde Cienfuegos † | Bishop of Avila, Spain |
| 24 May | 23.3 | Ordained Priest | Angiolo (Angelo) Cesarini † | Priest | Titular Bishop of Milevum |
| 25.7 | Ordained Priest | Joaquim de Santa Clara Brandão (Lopes), O.S.B. † | Priest of Order of Saint Benedict | Archbishop of Évora, Portugal |
| 25 May | 40.8 | Appointed | Raymond de Durfort † | Bishop of Montpellier, France | Archbishop of Besançon, France |
| 35.9 | Appointed | Joseph-François de Malide † | Bishop of Avranches, France | Bishop of Montpellier, France |
| Born | Francesco Luigi Piervisani † | Assisi | Bishop of Nocera Umbra, Italy |
| 26 May | 50.7 | Died | Gennaro Maria Albertini, C.R. † | Bishop of Caserta, Italy |
| 1 Jun | 41.3 | Appointed | Stefano (Ildefonso) Ortiz Cortes, O.S.B. † | Bishop of Mottola (Motula), Italy |
| 2 Jun | 54.0 | Appointed | Pedro Cortez y Larraz † | Archbishop of Guatemala | Bishop Emeritus of Tortosa, Spain |
| 53.3 | Appointed | Giambattista Donati † | Bishop of Cervia, Italy |
| 49.0 | Appointed | Alessandro Pisani † | Bishop of Piacenza, Italy |
| 38.4 | Appointed | Arnaldo Speroni, O.S.B. † | Bishop of Adria, Italy |
| 11 Jun | 45.9 | Ordained Bishop | Francisco Antonio de la Riva Mazo † | Archbishop of Santafé en Nueva Granada, Colombia |
| 16 Jun | | Born | Gaetano Bonanni † | Roma | Bishop of Norcia, Italy |
| 19 Jun | | Born | Juan Arciniega † | Herrán | Auxiliary Bishop of Toledo, Spain |
| 22 Jun | 31.6 | Ordained Bishop | Charles de Broglie † | Bishop of Noyon, France |
| 24 Jun | 83.2 | Died | Louis-François-Renaud de Villeneuve † | Bishop of Montpellier, France |