| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Joseph IX Ragi (Youssef) El-Khazen (Gazeno) † | Ajaltoun | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| Born | Giacomo Bellucci † | Sovana | Bishop-Elect of Sovana (Soana), Italy |
| 85.2 | Died | Giuseppe Boccarelli † | Bishop of Termoli, Italy |
| 37.0 | Appointed | Crescenzio Cavalli, O.F.M. † | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 25.2 | Ordained Priest | Felipe González Abarca, O. de M. † | Priest of Order of Our Lady of Mercy | Bishop of Santander, Spain |
| 84.2 | Died | Ignacy Augustyn Kozierowski † | Auxiliary Bishop of Gniezno, Poland |
| 68.0 | Died | Nicola Lindi † | Bishop of Sapë, Albania |
| 23.1 | Ordained Priest | Giorgio Manurrita † | Priest | Bishop of Ogliastra, Italy |
| 68.2 | Died | Giuseppe Monticelli † | Bishop of Ugento, Italy |
| 62.0 | Died | Louis-Marie de Nicolay † | Bishop of Cahors, France |
| 24.8 | Ordained Priest | Alexander Paterson † | Priest | Vicar Apostolic of Eastern District, Scotland, Great Britain |
| 26.0 | Ordained Priest | Thomas Scallan, O.F.M. † | Priest of Order of Friars Minor | Vicar Apostolic of Newfoundland, Canada |
| 25.0 | Ordained Priest | Juan Baltasar Toledano † | Priest | Bishop of Valladolid, Spain |
| Born | Antonio van Dyk † | | Coadjutor Vicar Apostolic of Breda, Netherlands |
| 8 Jan | 66.4 | Died | Francesco Agoselli † | Bishop of Cesena, Italy |
| 13 Jan | 66.3 | Died | Ugone Papé di Valdina † | Bishop of Mazara del Vallo, Italy |
| 14 Jan | 77.0 | Died | Gabriel Cortois de Quincey † | Bishop of Belley, France |
| 56.0 | Died | José do Menino Jesus (Deus), O.C.D. † | Bishop of Viseu, Portugal |
| 30 Jan | 38.8 | Ordained Bishop | Ramón Falcón y Salcedo † | Titular Bishop of Thaumacus | Bishop of Cuenca, Spain |
| 6 Feb | 23.3 | Ordained Priest | Carlos de São José de Azevedo e Sousa, O.F.M. † | Priest of Order of Friars Minor | Bishop of Guarda, Portugal |
| Born | Frederick John Conrad Résé (Reze) † | Vienenberg, Germany | Bishop of Detroit, Michigan, USA |
| 47.3 | Ordained Bishop | Wojciech Skarszewski † | Bishop of Chełm and Lublin, Poland | Archbishop of Warszawa {Warsaw}, Poland |
| 10 Feb | 60.8 | Selected | Sigismund Anton von Hohenwart, S.J. † | Bishop of Trieste, Italy | Archbishop of Wien {Vienna}, Austria |
| 13 Feb | 45.9 | Ordained Bishop | Joseph Anton Blatter † | Bishop of Sion {Sitten}, Switzerland |
| 14 Feb | 50.7 | Selected | Jean-François Périer, O.P. † | Bishop | Bishop of Avignon, France |
| Born | William Wareing † | London | Bishop Emeritus of Northampton, England, Great Britain |
| 16 Feb | 57.9 | Appointed | Jean-Pierre Saurine † | Bishop | Bishop of Strasbourg, France |
| 22 Feb | 59.0 | Appointed | François Bécherel † | Bishop | Bishop of Valence, France |
| 24 Feb | | Born | Mariano Fernández Fortique † | Caracas | Bishop of Guayana, Venezuela |
| 90.1 | Died | Giulio Cesare Lomellino, C.R. † | Bishop of Luni e Sarzana, Italy |
| 27 Feb | 57.1 | Ordained Bishop | Stefan Wojciech von Łubieński † | Titular Bishop of Byblus | Auxiliary Bishop of Gniezno, Poland |
| 43.6 | Appointed | Claude-François-Marie Primat, C.O. † | Bishop | Archbishop of Toulouse, France |
| 58.0 | Ordained Bishop | Jean-Pierre Saurine † | Bishop | Bishop of Strasbourg, France |
| 28 Feb | 50.2 | Appointed | Claude Le Coz † | Bishop | Archbishop of Besançon, France |
| Born | Joseph Schrott † | Novogradien | Bishop of Beograd (-Smederevo), Serbia |
| Mar | 81.7 | Died | Paolo Da Ponte, O.C.D. † | Bishop of Torcello (Turris), Italy |
| 66.1 | Died | Stefano (Ildefonso) Ortiz Cortes, O.S.B. † | Bishop of Mottola (Motula), Italy |
| 6 Mar | | Born | John MacHale † | Tubbernavine | Archbishop of Tuam, Ireland |
| 8 Mar | 79.4 | Died | Domenico de Dominicis † | Bishop of Ortona a Mare e Campli, Italy |
| 9 Mar | | Born | Pietro Raffaelli † | Fosciandora | Bishop of Reggio Emilia, Italy |
| 10 Mar | | Born | Józef Grzegorz Wojtarowicz † | Szynwald | Bishop Emeritus of Tarnów, Poland |
| 11 Mar | 59.2 | Died | Francesco Paolo Perremuto, O.S.B. † | Archbishop of Messina, Italy |
| 13 Mar | 87.2 | Died | Pierre-François-Xavier de Reboul de Lambert † | Bishop of Saint-Paul-Trois-Châteaux, France |
| 14 Mar | 74.6 | Died | Alexander Fé † | Titular Bishop of Methone |
| 17 Mar | 81.7 | Died | Augstín González Pisador † | Bishop of Oviedo, Spain |
| Born | José Manuel de Lemos † | Reiriz | Bishop of Coimbra, Portugal |
| 19 Mar | 23.3 | Ordained Priest | Jean-Joseph-Pierre Guigou † | Priest | Bishop of Angoulême, France |
| 20 Mar | 59.0 | Ordained Bishop | François Bécherel † | Bishop | Bishop of Valence, France |
| 23 Mar | 52.8 | Appointed | Louis Charrier de La Roche † | Bishop | Bishop of Versailles, France |
| 27 Mar | 50.8 | Ordained Bishop | Jean-François Périer, O.P. † | Bishop | Bishop of Avignon, France |
| 29 Mar | 53.0 | Died | Stefano Giustiniani † | Bishop of Albenga, Italy |
| 3 Apr | 87.2 | Died | Antonio Spedalieri † | Bishop of Bova, Italy |
| 8 Apr | 77.2 | Died | Saverio Palica, O.S.B. † | Bishop of Andria, Italy |
| 9 Apr | 61.3 | Resigned | Manuel Abad Lasierra † | Bishop of Astorga, Spain | Bishop Emeritus |
| Born | Bartolomeo Casati † | Gravedona | Bishop of Cremona, Italy |
| 10 Apr | 52.9 | Ordained Bishop | Louis Charrier de La Roche † | Bishop | Bishop of Versailles, France |
| 50.3 | Ordained Bishop | Claude Le Coz † | Bishop | Archbishop of Besançon, France |
| 43.7 | Ordained Bishop | Claude-François-Marie Primat, C.O. † | Bishop | Archbishop of Toulouse, France |
| 11 Apr | 40.3 | Appointed | Francesco Borzi † | Archbishop of Bar (Antivari), Montenegro |
| 59.6 | Appointed | Ignazio Busca † | Cardinal, Chamberlain (Camerlengo) of the College of Cardinals |
| 74.4 | Appointed | Francesco Carrara † | Cardinal, Cardinal-Priest of San Silvestro in Capite |
| 43.5 | Appointed | Marco (Matteo) Crescesi † | Bishop of Shkodrë (Scutari), Albania |
| 53.6 | Appointed | José Ramón de Estrada y Orgas † | Bishop of Santa Cruz de la Sierra, Bolivia |
| 55.6 | Appointed | Bartolomé Fabro Palacios † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 36.7 | Appointed | Józef Arnulf Giedroyc † | Coadjutor Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania | Bishop |
| 36.7 | Appointed | Józef Arnulf Giedroyc † | Titular Bishop of Orthosias in Caria | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 60.9 | Appointed | Francisco Isidoro Gutiérrez Vigil † | Bishop of Astorga, Spain |
| 59.1 | Appointed | Alejandro José de Ochoa y Morillo † | Bishop of La Paz, Bolivia |
| 55.7 | Appointed | Kajetan Maria (Ignaz Judas Thaddäus) Reisach, C.R. † | Titular Bishop of Dibon (Dibona) |
| 50.4 | Confirmed | Joseph von Stubenberg † | Bishop of Eichstätt, Germany | Archbishop of Bamberg, Germany |
| 53.5 | Appointed | Antonio Tavira Almazán † | Bishop of Islas Canarias {Canary Islands}, Spain | Bishop of Salamanca, Spain |
| 40.2 | Appointed | Giovanni Battista Pio Vitale † | Bishop of Alba (Pompea), Italy | Bishop of Mondovi, Italy |
| 13 Apr | 37.2 | Resigned | Charles-Maurice de Talleyrand-Périgord † | Bishop of Autun, France | Bishop Emeritus |
| 23 Apr | 23.0 | Ordained Priest | Pierre-Marie Cottret † | Priest | Bishop of Beauvais, France |
| 24.0 | Ordained Priest | Salvator Ferro de Berardis † | Priest | Bishop of Catania, Italy |
| 24.8 | Ordained Priest | Carlo Fontanini † | Priest | Bishop of Concordia (Sagittaria), Italy |
| 24.1 | Ordained Priest | Giovanni Battista Iacobini † | Priest | Bishop of Bagnoregio (Bagnorea), Italy |
| 23.0 | Ordained Priest | José Francisco da Soledade Bravo † | Priest | Bishop of Portalegre, Portugal |
| 26 Apr | 40.2 | Ordained Bishop | Giovanni Battista Pio Vitale † | Bishop of Alba (Pompea), Italy | Bishop of Mondovi, Italy |
| 28 Apr | 66.3 | Died | Charles-Joseph de Raffélis de Saint-Sauveur † | Bishop of Tulle, France |
| 2 May | 53.4 | Died | Aloisio Buonamici † | Bishop of Volterra, Italy |
| 15 May | 55.8 | Ordained Bishop | Kajetan Maria (Ignaz Judas Thaddäus) Reisach, C.R. † | Titular Bishop of Dibon (Dibona) |
| 17 May | | Born | Richard Pius Miles, O.P. † | Prince George's County, MD | Bishop of Nashville, Tennessee, USA |
| 26 May | 72.7 | Died | Joseph Philipp Franz von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 28 May | 65.4 | Died | Antonius Bernardus Gurtler † | Titular Bishop of Tium |
| 31 May | 43.0 | Resigned | Antonio Dugnani † | Apostolic Nuncio to France | Cardinal, Prefect of the Apostolic Signatura |
| 1 Jun | | Born | Alexis-Basile-Alexandre Menjaud † | Chusclan | Archbishop of Bourges, France |
| 87.2 | Died | José Javier Rodríguez Arellano † | Archbishop of Burgos, Spain |
| 4 Jun | 38.0 | Succeeded | William Coppinger † | Bishop of Cloyne, Ireland |
| 38.0 | Succeeded | William Coppinger † | Bishop of Ross, Ireland | Bishop of Cloyne, Ireland |
| 85.4 | Died | Mathew McKenna † | Bishop of Ross, Ireland |
| 5 Jun | 43.7 | Ordained Bishop | Marco (Matteo) Crescesi † | Bishop of Shkodrë (Scutari), Albania |
| 23.7 | Ordained Priest | Candido Maria Frattini † | Priest of Roma {Rome}, Italy | Titular Archbishop of Philippi |
| 11 Jun | 22.0 | Ordained Deacon | László Esterházy † | Deacon | Bishop of Rožňava, Slovakia |
| 23.0 | Ordained Priest | Antal Juranitz † | Priest | Bishop of Győr (Raab), Hungary |
| 13 Jun | 51.4 | Resigned | Scipione de’ Ricci † | Bishop of Pistoia e Prato, Italy | Bishop Emeritus |
| 17 Jun | 68.3 | Died | Johann Georg Joseph von Eckart † | Auxiliary Bishop of Mainz, Germany |
| Born | Luigi Ricci † | Cupi | Bishop of Segni, Italy |
| 23.0 | Ordained Deacon | Peter de Ürményi † | Deacon | Auxiliary Bishop of Esztergom, Hungary |
| 18 Jun | 23.0 | Ordained Priest | François-Antoine Arbaud † | Priest | Bishop of Gap, France |
| 22.8 | Ordained Priest | Carlo Filesio Cittadini † | Priest | Bishop of Perugia, Italy |
| 24.4 | Ordained Priest | Jean-Joseph Delplancq † | Priest | Bishop of Tournai {Doornik}, Belgium |
| 24.1 | Ordained Priest | Michele Lanzetta † | Priest | Bishop of Lacedonia, Italy |
| 23.2 | Ordained Deacon | Antônio Rodrigues de Aguiar † | Deacon | Prelate of Goiás, Brazil |
| 24.3 | Ordained Priest | Tommaso Ronna † | Priest | Bishop of Crema, Italy |
| 24.0 | Ordained Priest | Gaetano Maria Giuseppe Benedetto Placido Vincenzo Trigona e Parisi † | Priest | Cardinal, Archbishop of Palermo, Italy |
| 19 Jun | 36.9 | Ordained Bishop | Józef Arnulf Giedroyc † | Titular Bishop of Orthosias in Caria | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 24.5 | Ordained Priest | Antoine Casimir Libère de Stockem † | Priest of Liège, Belgium | Auxiliary Bishop |
| 23.0 | Ordained Priest | Peter de Ürményi † | Priest | Auxiliary Bishop of Esztergom, Hungary |
| 21 Jun | 60.9 | Died | Giuseppe Pasquale Rogano † | Bishop of Trevico, Italy |
| 22 Jun | | Born | Thomas Griffiths † | London | Vicar Apostolic of London District, England, Great Britain |
| 23 Jun | 71.2 | Died | Wojciech Józef Gadomski † | Auxiliary Bishop of Płock, Poland |
| 25 Jun | 62.7 | Died | Antonio Feliú y Centena † | Bishop of Santiago de Cuba |
| 29 Jun | | Born | Ugo Pietro Spinola † | Genoa, Italy | Cardinal, Official of the Roman Curia - Other |