| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Luís da Cunha de Abreu e Melo † | Taveiro | Bishop of Beja, Portugal |
| 53.3 | Resigned | Antonio Ludovico Antinori, C.O. † | Archbishop of Acerenza e Matera, Italy | Archbishop Emeritus |
| Died | Walter Blake † | Bishop of Achonry, Ireland |
| 56.0 | Appointed | Nicolas de Bouillé de Saint-Géran † | Bishop of Autun, France |
| 41.2 | Appointed | Gaspar de Bragança † | Archbishop of Braga, Portugal |
| Died | Serafino Brancone (Branconi) † | Bishop of Gallipoli, Italy |
| Appointed | Francesco Castellini † | Bishop of Tivoli, Italy | Bishop of Rimini, Italy |
| Born | Antonio Cerezano Camarena † | Santo Domingo | Archbishop-Elect of Santo Domingo, Dominican Republic |
| Born | Carlo-Maria Cernelli † | Napoli | Archbishop of Chieti, Italy |
| 17.4 | Professed | Barnaba (Gregorio) Chiaramonti, O.S.B. † | Member of Order of Saint Benedict | Pope (Roma {Rome}, Italy) |
| Died | Nicola Cioffi † | Archbishop of Amalfi, Italy |
| 57.3 | Resigned | Jean-Gilles du Coêtlosquet † | Bishop of Limoges, France | Bishop Emeritus |
| Appointed | António Caetano da Rocha † | Bishop of Angra, Portugal |
| 51.0 | Appointed | Claude-Antoine-François-Jacquemet Gaultier d'Ancyse † | Bishop of Luçon, France |
| 23.8 | Ordained Priest | Matthew Gibson † | Priest | Vicar Apostolic of Northern District, England, Great Britain |
| 70.0 | Resigned | Louis-Guy de Guérapin de Vauréal † | Bishop of Rennes, France | Bishop Emeritus |
| 20.8 | Professed | Adalbert Freiherr (Wilhelm Adolph Heinrich) von Harstall, O.S.B. † | Member of Order of Saint Benedict | Bishop of Fulda, Germany |
| 57.0 | Ordained Bishop | Miguel Lino de Ezpeleta † | Bishop of Cebu, Philippines |
| 54.3 | Died | Antonio Nogueira † | Bishop of São Tomé e Príncipe |
| Died | Michael O'Reilly † | Archbishop of Armagh, Ireland |
| Appointed | Antonio Puoti † | Archbishop of Amalfi, Italy |
| 66.4 | Ordained Bishop | Bartolomé Rull, O.S. † | Bishop of Malta |
| Died | Paul-Loup de Salières de Fosseran † | Bishop of Vaison, France |
| Died | Józef Eustachy Szembek † | Bishop of Płock, Poland |
| 61.1 | Ordained Bishop | Pedro Zamorana Romezal † | Bishop of Durango, México |
| 53.0 | Appointed | Jean-Antoine de Toucheboeuf de Beaumont des Junies † | Bishop of Rennes, France | Bishop Emeritus |
| Jan | 51.0 | Resigned | Mathias Poncet de la Rivière † | Bishop of Troyes, France | Bishop Emeritus |
| 19 Jan | | Born | Pedro García Panés, O.F.M. † | Jarandilla, Spain | Bishop of Paraguay |
| 26 Jan | | Born | Giuseppe Segna † | Poggio | Bishop of Marsi, Italy |
| 29 Jan | 52.1 | Appointed | Louis-Sextius de Jarente de La Bruyère † | Bishop of Orléans, France |
| 30 Jan | 55.9 | Died | Luigi Mattei † | Cardinal, Cardinal-Priest of S. Maria in Ara Coeli |
| 2 Feb | 33.0 | Appointed | Jean-Baptiste-Marie Champion de Cicé † | Bishop of Troyes, France | Bishop of Auxerre, France |
| 41.6 | Appointed | Pierre-Paul du Quaylar (Caylar) † | Bishop of Digne, France | Bishop Emeritus |
| 5 Feb | 60.0 | Died | Ferdinand Julius Graf von Troyer † | Cardinal, Bishop of Olomouc, Czech Republic |
| 11 Feb | | Born | Franz Ignaz von Streber † | Reisach | Auxiliary Bishop of München und Freising {Munich}, Germany |
| 18 Feb | 25.4 | Ordained Priest | Jacinto Carlos da Silveira † | Priest | Bishop Emeritus of São Luís do Maranhão, Brazil |
| 22.9 | Ordained Priest | Frantisek de Paula Herzan von Harras † | Priest | Cardinal, Bishop of Szombathely, Hungary |
| 2 Mar | 77.5 | Died | Pierre-Guérin de Tencin † | Cardinal, Archbishop of Lyon, France |
| 12 Mar | | Born | Giuseppe Morozzo Della Rocca † | Turin | Cardinal, Bishop of Novara, Italy |
| 13 Mar | 51.5 | Appointed | Diego del Corro † | Archbishop of Lima, Peru |
| 62.3 | Appointed | Francisco Javier de Luna Victoria y Castro † | Bishop of Trujillo, Peru |
| 83.2 | Appointed | Juan Manuel Jeronimo de Romaní y Carrillo † | Bishop of Panamá | Bishop of Cuzco, Peru |
| 52.2 | Confirmed | Louis-Sextius de Jarente de La Bruyère † | Bishop of Orléans, France |
| 61.2 | Appointed | Cayetano Marcellano y Agramont † | Archbishop of La Plata o Charcas, Bolivia |
| 33.3 | Confirmed | Louis-Joseph de Montmorency-Laval † | Bishop of Condom, France | Cardinal, Bishop Emeritus of Metz, France |
| 50.2 | Confirmed | Plaicart de Raigecourt † | Bishop of Aire, France |
| 64.0 | Appointed | Blas Roldán, O.S.H. † | Bishop of Segorbe, Spain |
| 14 Mar | | Born | Adam Friedrich Freiherr von Groß zu Trockau † | Würzburg | Bishop of Würzburg, Germany |
| Born | Agostino Rivarola † | Genoa | Cardinal, Priest of Roma {Rome}, Italy |
| 16 Mar | 44.6 | Appointed | Antoine de Malvin de Montazet † | Archbishop of Lyon, France |
| 2 Apr | 48.9 | Ordained Bishop | Francisco Alejandro Bocanegra Jivaja † | Bishop of Guadix, Spain | Archbishop of Santiago de Compostela, Spain |
| 28.6 | Ordained Priest | George Hay † | Priest | Vicar Apostolic Emeritus of Lowland District, Scotland, Great Britain |
| 7 Apr | | Born | Jerónimo Fernandez de Castro Delgado, O.SS.T. † | Baltar | Bishop of Albarracin, Spain |
| 74.4 | Died | Pedro González García † | Bishop of Avila, Spain |
| 9 Apr | | Born | Jean-Louis-Simon Lemercier † | Beauvais | Bishop Emeritus of Beauvais, France |
| 10 Apr | | Born | Lorenzo Gutkowski † | Plock | Auxiliary Bishop of Płock, Poland |
| 14 Apr | 47.7 | Installed | Giuseppe de Vignoli † | Bishop of Carpentras, France | Bishop of Forli, Italy |
| 16 Apr | 41.8 | Ordained Bishop | Pierre-Paul du Quaylar (Caylar) † | Bishop of Digne, France | Bishop Emeritus |
| 50.3 | Ordained Bishop | Plaicart de Raigecourt † | Bishop of Aire, France |
| 17 Apr | | Born | Gabrio Maria Nava † | Barzanò | Bishop of Brescia, Italy |
| 22 Apr | | Born | Giovanni Battista de Martino di Pietradoro † | Napoli | Bishop of Telese o Cerreto Sannita, Italy |
| 23 Apr | 64.1 | Ordained Bishop | Blas Roldán, O.S.H. † | Bishop of Segorbe, Spain |
| 27 Apr | 62.0 | Appointed | Leopold Friedrich Reichsgraf von Egkh und Hungersbach † | Bishop of Olomouc, Czech Republic |
| 30 Apr | | Died | James Bernard Dunne † | Bishop of Ossory, Ireland |
| 40.0 | Ordained Bishop | Raymund Anton Graf von Strasoldo † | Bishop of Eichstätt, Germany |
| 3 May | | Born | Andrés García Palomares † | Madrid | Bishop of Albarracin, Spain |
| 83.1 | Died | Prospero Lorenzo Lambertini † | Pope (Roma {Rome}, Italy) |
| 71.2 | Died | Callisto Maria (Vincenzo Antonio) Palombella † | Bishop of Terracina, Priverno e Sezze, Italy |
| 14 May | 33.4 | Appointed | Léopold-Charles de Choiseul-Stainville † | Bishop of Evreux, France | Archbishop of Cambrai, France |
| 36.7 | Appointed | Arthur-Richard Dillon † | Archbishop of Toulouse, France | Archbishop of Narbonne, France |
| 18 May | 23.4 | Professed | Manuel Obellar, O.P. † | Member of Order of Friars Preachers | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 20 May | 23.2 | Ordained Priest | Diego Gregorio Cadello † | Priest of Cagliari, Italy | Cardinal, Archbishop |
| 24.0 | Ordained Priest | Luca Nicola De Luca † | Priest | Bishop Emeritus of Trivento, Italy |
| 23.2 | Ordained Priest | Joseph-Antoine (Maxime) Guisolan, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Lausanne, Switzerland |
| 30 May | 56.3 | Died | François de Crussol d'Uzès † | Archbishop of Toulouse, France |
| 5 Jun | | Born | Pedro Valero † | Pozondón | Bishop of Gerona, Spain |
| 11 Jun | 22.8 | Ordained Priest | Kajetan Maria (Ignaz Judas Thaddäus) Reisach, C.R. † | Priest of Congregation of Clerics Regular | Titular Bishop of Dibon |
| 18 Jun | 61.5 | Installed | Pedro Anselmo Sánchez de Tagle † | Bishop of Michoacán, Michoacán, México |
| 21 Jun | 78.5 | Died | Jean de Vaugirault † | Bishop of Angers, France |