| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 50.9 | Died | Valentinus Matthias Arcemberski † | Bishop of Kyiv and Chernihiv (Kijów and Czernihow), Ukraine |
| 24.6 | Ordained Priest | François-Charles de Béringhen d’Armainvilliers † | Priest | Bishop of Le Puy-en-Velay, France |
| Born | Joseph-Dominique de Cheylus † | Avignon | Bishop of Bayeux, France |
| 54.4 | Died | Hyacinthus Lucas Czermiński † | Auxiliary Bishop of Przemyśl, Poland |
| Born | Gennaro Giordano † | Napoli | Bishop of Acerra, Italy |
| 23.4 | Ordained Priest | Nicolaus Givovich † | Priest | Bishop of Sirmio (Srijem; Sirmium), Croatia |
| Resigned | Diego Ladrón de Guevara † | Bishop of Quito, Ecuador | Bishop Emeritus |
| 27.8 | Ordained Priest | Kornylij Lebeckyj, O.S.B.M. † | Priest of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Foreign Diocese |
| 45.4 | Ordained Priest | Franz Ludwig von Schenk von Castell † | Priest of Eichstätt, Germany | Bishop |
| Born | Felix Josephus Hubertus de Wavrans † | Tournay | Bishop of Ypres (Ieper), Belgium |
| Jan | 70.6 | Died | Giovanni Uva, O.F.M. † | Archbishop of Lanciano, Italy |
| 1 Jan | 62.1 | Died | Esteban Bellido Guevara † | Bishop of Palencia, Spain |
| 2 Jan | 48.3 | Appointed | Pompeio Aldrovandi † | Apostolic Nuncio to Spain | Cardinal, Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 65.6 | Died | Edme Bélot, M.E.P. † | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viet Nam |
| 4 Jan | 73.0 | Appointed | Francesco Onofrio Hodierna † | Bishop of Valva, Italy | Bishop Emeritus |
| 73.0 | Appointed | Francesco Onofrio Hodierna † | Bishop of Sulmona, Italy | Bishop Emeritus of Valva, Italy |
| 5 Jan | | Born | Tomasz Ignacy Zienkowicz † | | Auxiliary Bishop Emeritus of Vilnius, Lithuania |
| 7 Jan | | Born | Henri-Louis-René Des Nos † | Ernée | Bishop of Verdun, France |
| 10 Jan | 23.6 | Ordained Priest | Bernardino Vari † | Priest | Bishop of Civita Castellana e Orte, Italy |
| 11 Jan | 74.3 | Died | Silvius de Cavalieri † | Titular Archbishop of Athenae |
| 12 Jan | 75.9 | Died | Taddeo Luigi dal Verme † | Cardinal, Bishop of Ferrara, Italy |
| 24 Jan | | Born | Joannes Bapt. Badoer † | Pago | Titular Bishop of Sidon |
| 29 Jan | 52.8 | Selected | Armand-Pierre de la Croix de Castries † | Archbishop of Tours, France | Archbishop of Albi, France |
| Feb | 82.0 | Died | Francesco Antonio Leopardi † | Bishop of Tricarico, Italy |
| 7 Feb | 23.9 | Ordained Priest | Alexander Działyński † | Priest | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 11 Feb | 23.7 | Ordained Priest | Pedro Miguel Argandoña Pastene Salazar † | Priest of Santiago de Chile | Archbishop of La Plata o Charcas, Bolivia |
| Born | Antonius Bucci † | Grottaglie | Titular Bishop of Orthosias in Caria |
| 14 Feb | 35.1 | Professed | Ioan Constantin Giurgiu Patachi (Nemes de Pataky), O.S.B.M. † | Priest of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Făgăraş (Romanian), Romania |
| 17 Feb | 41.3 | Died | Dondazio Alessio Malvicini Fontana † | Bishop of Foligno, Italy |
| 25 Feb | 61.1 | Died | Filippo della Torre † | Bishop of Adria, Italy |
| 7 Mar | 61.3 | Ordained Bishop | João de Brito e Vasconcelos † | Bishop of Angra, Portugal |
| 32.5 | Ordained Priest | Giovanni Battista Campagnoli † | Priest | Bishop of Recanati e Loreto, Italy |
| 10 Mar | 58.4 | Died | Joseph-Maurel du Chaffaut † | Bishop of Saint-Paul-Trois-Châteaux, France |
| 12 Mar | | Born | Giuseppe Ippoliti † | Pistoia | Bishop of Pistoia e Prato, Italy |
| 13 Mar | 22.9 | Ordained Priest | Ciro de Alteriis † | Priest | Bishop of Acerra, Italy |
| 14 Mar | 55.2 | Selected | José Esquivel Castillejos, O.P. † | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 15 Mar | 45.5 | Elevated to Cardinal | Giberto Bartolomeo Borromeo † | Cardinal, Bishop of Novara, Italy |
| Born | Giuseppe Maria Carafa † | Nolan | Bishop of Mileto, Italy |
| 39.7 | Appointed | Juan José de Escalona y Calatayud † | Bishop of Caracas, Santiago de Venezuela | Bishop of Michoacán, México |
| 52.4 | Appointed | Carlo Francesco Giocoli † | Bishop of Capaccio, Italy |
| 20 Mar | 83.2 | Died | Onofrio Costantini † | Titular Archbishop of Derbe |
| 23 Mar | | Born | Giuseppe Maria Pilo, O. Carm. † | Sassari | Bishop of Ales e Terralba, Italy |
| 1 Apr | | Born | Joaquim Xavier Botelho de Lima † | Ulixbonen | Archbishop of Évora, Portugal |
| 7 Apr | 58.8 | Died | Lamberto Manuel López † | Bishop of Teruel, Spain |
| 10 Apr | | Born | Manuel Fernández Torres † | Fontiveros | Bishop of Ceuta, Spain |
| 11 Apr | | Born | Francisco (Martinez) Polanco (López de Lorena) † | Cianca y Parvayón, Spain | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 22.9 | Ordained Priest | Nicola Stanislavich, O.F.M. † | Priest of Order of Friars Minor | Bishop of Csanád, Hungary |
| 12 Apr | 30.3 | Appointed | Antonio Claudio Alvarez de Quiñones † | Archbishop of Santo Domingo, Dominican Republic | Archbishop of Santafé en Nueva Granada, Colombia |
| 54.9 | Appointed | Flaminio Dondi, O.F.M. † | Auxiliary Bishop of Sabina, Italy | Bishop of Montefeltro, Italy |
| 54.9 | Appointed | Flaminio Dondi, O.F.M. † | Titular Bishop of Abdera | Bishop of Montefeltro, Italy |
| 62.5 | Appointed | Stefano Fogliani † | Bishop of Modena, Italy |
| 72.3 | Resigned | Nicolaus Gabrieli † | Bishop of Novigrad (Cittanova), Croatia | Bishop Emeritus |
| 58.4 | Appointed | Adeodato Summantico, O.S.A. † | Bishop of San Severo, Italy |
| 40.3 | Appointed | Jan Feliks Szaniawski † | Titular Bishop of Capsus | Bishop of Chełm, Poland |
| 17 Apr | 54.9 | Ordained Bishop | Flaminio Dondi, O.F.M. † | Titular Bishop of Abdera | Bishop of Montefeltro, Italy |
| 23 Apr | 26.9 | Ordained Priest | Jan Aleksander Lipski † | Priest | Cardinal, Bishop of Kraków, Poland |
| 25 Apr | 62.6 | Ordained Bishop | Stefano Fogliani † | Bishop of Modena, Italy |
| 58.5 | Ordained Bishop | Adeodato Summantico, O.S.A. † | Bishop of San Severo, Italy |
| 27 Apr | | Born | Antonio Jorge y Galván † | Zaragoza | Archbishop of Granada, Spain |
| May | 71.3 | Died | Francesco Masones y Nin † | Archbishop of Oristano, Italy |
| Born | João Rafael de Mendonça, O.S.H. † | Lisbon | Bishop of Porto, Portugal |
| 64.3 | Died | Biagio Terzi † | Bishop of Isernia, Italy |
| Born | Giuseppe Vincentini † | Reatin | Titular Archbishop of Nicosia |
| 2 May | | Born | Bonaventura Calcagnini † | Gaeta | Bishop of Penne e Atri, Italy |
| 3 May | | Born | Joannes Calcagnini † | Caietan | Bishop of Fondi (Fundi), Italy |
| Born | Pierre-Augustin-Bernardin de Rosset de Rocozel de Fleury † | Pérignan | Bishop of Chartres, France |
| 8 May | 72.4 | Died | Mateo Foncillas Mozárabe † | Bishop of Jaca, Spain |
| 10 May | 51.4 | Appointed | Marcus Andriaski † | Bishop of Nicopoli, Bulgaria | Archbishop of Sardica (Sredek, Sofia), Bulgaria |
| 58.2 | Appointed | Giosafatte (Giosafat) Battistelli † | Bishop of Foligno, Italy |
| 45.7 | Installed | Giberto Bartolomeo Borromeo † | Cardinal-Priest of Sant’Alessio | Cardinal, Bishop of Novara, Italy |
| 47.4 | Appointed | Gottfried Langwerth von Simmern † | Auxiliary Bishop of Regensburg, Germany |
| 47.4 | Appointed | Gottfried Langwerth von Simmern † | Titular Bishop of Germanicopolis | Auxiliary Bishop of Regensburg, Germany |
| 59.4 | Appointed | Pedro Magaña, O.S.B. † | Bishop of Solsona, Spain |
| 53.7 | Appointed | Tommaso Ruffo † | Archbishop (Personal Title) of Ferrara, Italy | Cardinal, Archbishop Emeritus of Ferrara, Italy |
| 13 May | | Born | Antonius D’Afflitto, C.R. † | Lizzanello | Archbishop of Cosenza, Italy |
| 14 May | | Born | Antonio Bonifacio Coelho † | Couilhao | Auxiliary Bishop of Lisboa {Lisbon}, Portugal |
| 21 May | | Born | Alessandro Pisani † | Parma | Bishop of Piacenza, Italy |
| 22 May | 22.9 | Ordained Priest | Octavius Antonius Baiardi † | Priest | Titular Archbishop of Tyrus |
| 23.0 | Ordained Priest | Franciscus Antonius de los Reyes † | Priest | Bishop of Oria, Italy |
| 36.6 | Ordained Priest | Antonio Guglielmi † | Priest | Archbishop of Urbino, Italy |
| 23.0 | Ordained Priest | Isidoro Pitellia, O.M. † | Priest of Order of the Minims | Bishop of Termoli, Italy |
| 23.5 | Ordained Priest | Francesco de Santa Rosa de Viterbo, O.F.M. † | Priest of Order of Friars Minor | Bishop of Nanking [Nanjing], China |
| 30 May | 39.9 | Ordained Bishop | Juan José de Escalona y Calatayud † | Bishop of Caracas, Santiago de Venezuela | Bishop of Michoacán, México |
| 46.0 | Ordained Priest | Virgilio Giannotti † | Priest | Bishop of Città della Pieve, Italy |
| 1 Jun | 65.0 | Died | Franz Theodor von Guttenberg † | Auxiliary Bishop of Augsburg, Germany |
| 4 Jun | | Born | Giuseppe Francesco Maria della Torre † | Genova | Bishop of Albenga, Italy |
| 7 Jun | 73.4 | Died | Pedro Granell † | Bishop of Barbastro, Spain |
| 11 Jun | | Born | Giovanni Rondinelli † | Ferrara | Bishop of Comacchio, Italy |
| Born | Domenico Russo † | Napoli | Bishop of Monopoli, Italy |
| 12 Jun | 77.4 | Died | Diego Ladrón de Guevara † | Bishop of Quito, Ecuador |
| 48.2 | Appointed | Filippo Tipaldi † | Bishop of Ariano, Italy |
| 14 Jun | 55.5 | Appointed | Maciej Józef Ancuta † | Coadjutor Bishop of Vilnius, Lithuania | Bishop |
| 55.1 | Appointed | Matthaeus Giannicio † | Bishop of Scardona (Skradin), Italy |
| 50.5 | Appointed | Josaphat Parysowicz, O.F.M. Conv. † | Bishop of Bacău, Romania |
| 61.9 | Appointed | Daniele Sansoni † | Bishop of Novigrad (Cittanova), Croatia |
| 15 Jun | 74.2 | Died | Fabrizio Spada † | Cardinal, Cardinal-Bishop of Palestrina |
| 20 Jun | 49.4 | Ordained Bishop | Antonio Laghi, O.F.M. † | Titular Bishop of Loryma | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 48.2 | Ordained Bishop | Filippo Tipaldi † | Bishop of Ariano, Italy |
| 22 Jun | | Born | Paolino Pace † | Mormanno | Bishop of Vico Equense, Italy |
| 26 Jun | 35.6 | Ordained Bishop | Claude-Antoine Duding, O.S.Io.Hieros. † | Bishop of Lausanne, Switzerland |