| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Giovanni Battista Belland † | | Titular Bishop of Messene |
| 58.3 | Died | Joannes Cuppari † | Bishop of Trogir (Traù), Croatia |
| 69.0 | Died | Jakub Franciszek Dłuski, O.F.M. Conv. † | Bishop of Bacău, Romania |
| Born | Jean-François Dondel † | | Bishop of Dol, France |
| Born | Xaverius Giustiniani † | | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 22.2 | Ordained Priest | Francisco Gutiérrez Galeano, O. de M. † | Priest of Order of Our Lady of Mercy | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 66.4 | Ordained Bishop | Martín de Híjar y Mendoza, O.E.S.A. † | Bishop of Concepción, Chile |
| Born | François de Lastic de Saint-Jal † | | Bishop of Castres, France |
| 33.8 | Ordained Bishop | Antonio Negri † | Bishop of Shkodrë (Scutari), Albania |
| Resigned | Giovanni Francesco Nicolai, O.F.M. † | Bishop-Elect of Nanking [Nanjing], China | Vicar Apostolic of Houkouang, China |
| 25.0 | Ordained Priest | Alonso del Pozo y Silva † | Priest of Concepción, Chile | Archbishop Emeritus of La Plata o Charcas, Bolivia |
| 27.8 | Ordained Priest | Johann Franz Riccilli (Riccius) † | Priest of Strasbourg, France | Auxiliary Bishop |
| Jan | 74.1 | Died | Giulio Giacomo Castellani, O.S.A. † | Bishop of Cagli, Italy |
| 52.2 | Died | Giaconto Tuartkovich, O.F.M. Obs. † | Bishop of Stagno (Ston), Croatia |
| 3 Jan | 40.0 | Ordained Bishop | Joachim-Joseph d’Estaing de Saillans † | Bishop of Saint-Flour, France |
| 44.4 | Ordained Bishop | Georg Sigismund von Sinersberg † | Titular Bishop of Nicopolis in Armenia | Auxiliary Bishop of Trento, Italy |
| 48.0 | Ordained Bishop | Jean-Baptiste de Verthamon † | Bishop of Pamiers, France |
| 4 Jan | 57.7 | Appointed | Pedro Pacheco, O.P. † | Bishop of Cochin, India |
| 38.2 | Confirmed | Lothar Franz von Schönborn † | Bishop of Bamberg, Germany | Archbishop of Mainz, Germany |
| 49.0 | Confirmed | Charles de Villeneuve de Vence † | Bishop of Glandèves, France |
| 8 Jan | 22.0 | Selected | Joseph Clemens von Bayern von Wittelsbach † | Coadjutor Bishop of Hildesheim, Germany | Archbishop of Köln {Cologne}, Germany |
| 10 Jan | 46.0 | Ordained Bishop | Augustin de Maupeou † | Bishop of Castres, France | Archbishop of Auch, France |
| 33.5 | Ordained Bishop | Ludwig Anton von Pfalz-Neuburg † | Bishop of Worms, Germany |
| 16 Jan | 55.4 | Appointed | Custodio do Pinho † | Vicar Apostolic of Malabar, India |
| 17 Jan | 45.5 | Ordained Bishop | Daniel de Francheville † | Bishop of Périgueux (Vesuna), France |
| 23 Jan | 51.0 | Selected | William D’Alton (Daton) † | Bishop of Ossory, Ireland |
| 34.0 | Selected | Richard Piers † | Bishop of Waterford and Lismore, Ireland | Bishop Emeritus |
| 24 Jan | 39.0 | Ordained Bishop | Jacques des Maretz † | Bishop of Riez, France | Archbishop of Auch, France |
| 59.0 | Died | Antonio de Sangro, C.R. † | Bishop of Troia, Italy |
| 25 Jan | 60.9 | Appointed | Isidoro Aparici Gilart † | Auxiliary Bishop of Valencia, Spain |
| 60.9 | Appointed | Isidoro Aparici Gilart † | Titular Bishop of Croae | Auxiliary Bishop of Valencia, Spain |
| 37.4 | Appointed | Francesco Maria Federico Carafa, C.R. † | Bishop of San Marco (Argentano), Italy | Bishop of Nola, Italy |
| 54.6 | Confirmed | Alessandro Ciceri (Cicero), S.J. † | Bishop of Nanking [Nanjing], China |
| 48.2 | Appointed | Bernardino Plastina, O.M. † | Bishop of Oppido Mamertina, Italy |
| 24.9 | Ordained Priest | Pablo Vilana Perlas † | Priest | Archbishop of Salerno, Italy |
| 30 Jan | 25.4 | Ordained Priest | Andrea Luigi Cattani † | Priest | Bishop of San Miniato, Italy |
| 31 Jan | 37.4 | Ordained Bishop | Francesco Maria Federico Carafa, C.R. † | Bishop of San Marco (Argentano), Italy | Bishop of Nola, Italy |
| 48.2 | Ordained Bishop | Bernardino Plastina, O.M. † | Bishop of Oppido Mamertina, Italy |
| 50.2 | Ordained Bishop | António de Saldanha † | Bishop of Portalegre, Portugal | Bishop of Guarda, Portugal |
| 1 Feb | 73.3 | Died | Jean Louis (Johann Ludwig) d’Elderen † | Bishop of Liège, Belgium |
| Born | Giuseppe Spinelli † | | Cardinal, Cardinal-Bishop of Ostia |
| 6 Feb | | Born | Johann Joseph von Wratislaw von Mitrowitz † | | Bishop of Hradec Králové, Czechia |
| 7 Feb | | Born | Franz Joseph Anton Joachim Schmid von Altenstadt † | | Auxiliary Bishop of Regensburg, Germany |
| 8 Feb | 53.1 | Appointed | John Dempsey † | Bishop of Kildare and Leighlin, Ireland |
| 30.6 | Appointed | Antonio Giustiniani † | Bishop of Syros (e Milos), Greece | Archbishop of Naxos, Greece |
| 50.1 | Confirmed | Fergus Laurence Lea † | Bishop of Derry, Ireland |
| 78.4 | Died | Giuseppe Saggese † | Bishop of Ravello e Scala, Italy |
| 51.1 | Appointed | Juan Alfonso Valerià y Aloza, O.F.M. Disc. † | Bishop of Solsona, Spain | Bishop of Lérida, Spain |
| 11 Feb | 69.7 | Died | Johann Daniel von Gudenus † | Auxiliary Bishop of Mainz, Germany |
| 13 Feb | 86.1 | Died | Léon Bacoué, O.F.M. † | Bishop Emeritus of Glandèves, France |
| 14 Feb | 36.1 | Ordained Bishop | Louis Milon † | Bishop of Condom, France |
| 51.1 | Ordained Bishop | Juan Alfonso Valerià y Aloza, O.F.M. Disc. † | Bishop of Solsona, Spain | Bishop of Lérida, Spain |
| 18 Feb | 71.1 | Installed | Kazimierz Jan Szczuka † | Bishop of Chelmno (Culma, Kulm), Poland |
| 19 Feb | 72.1 | Died | Gennaro Sanfelice † | Archbishop of Cosenza, Italy |
| 20 Feb | | Born | Valentín Moran Menéndez, O. de M. † | | Bishop Emeritus of Islas Canarias {Canary Islands}, Spain |
| 24 Feb | 24.5 | Ordained Priest | Marco Antonio de Rosa † | Priest | Bishop of Policastro, Italy |
| 25 Feb | 47.1 | Ordained Bishop | Mathieu Ysoré d’Hervault † | Archbishop of Tours, France |
| 1 Mar | 34.1 | Appointed | Gianfrancesco Bembo, C.R.S. † | Bishop of Belluno, Italy |
| 5 Mar | | Born | Hernando Eusebio Oscot y Colombres, O.P. † | | Coadjutor Vicar Apostolic of Fukien (Kuiceu), China |
| 6 Mar | 24.1 | Ordained Priest | Joseph-Louis de Cohorn de La Palun † | Priest | Bishop of Vaison, France |
| 27.8 | Ordained Priest | Luigi Forni † | Priest | Bishop Emeritus of Reggio Emilia, Italy |
| 24.6 | Ordained Priest | Gaston-Jean-Baptiste-Louis de Noailles † | Priest | Bishop of Chalons-sur-Marne, France |
| 24.0 | Ordained Priest | Domenico Rossi † | Priest | Bishop of Vulturara e Montecorvino, Italy |
| 7 Mar | 34.1 | Ordained Bishop | Gianfrancesco Bembo, C.R.S. † | Bishop of Belluno, Italy |
| 10 Mar | | Born | Isidro de Arevalo † | | Bishop of Nueva Caceres, Philippines |
| 70.3 | Died | Giovanni Paolo Inurea (Invrea), O.S.B. † | Bishop of Ajaccio, France |
| 14 Mar | | Born | José Ignacio Rodríguez Cornejo † | | Bishop of Plasencia, Spain |
| 15 Mar | 57.4 | Appointed | Francesco Azzolini † | Bishop of Ripatransone, Italy |
| 40.2 | Appointed | Luigi (Ludovico) Capuani (Capulani) † | Bishop of Ravello e Scala, Italy | Bishop of Gravina (di Puglia), Italy |
| 40.2 | Appointed | Eligio Caracciolo, C.R. † | Archbishop of Cosenza, Italy |
| 40.2 | Appointed | Amand Wiktoryn Czeszejko, O.P. † | Bishop of Bacău, Romania |
| 21 Mar | 57.4 | Ordained Bishop | Francesco Azzolini † | Bishop of Ripatransone, Italy |
| 40.2 | Ordained Bishop | Luigi (Ludovico) Capuani (Capulani) † | Bishop of Ravello e Scala, Italy | Bishop of Gravina (di Puglia), Italy |
| 40.2 | Ordained Bishop | Eligio Caracciolo, C.R. † | Archbishop of Cosenza, Italy |
| 22 Mar | 35.7 | Died | Gaetano de Castillo, C.R. † | Bishop of Lipari, Italy |
| 24 Mar | 65.2 | Died | Diego Ros de Medrano † | Bishop of Orense, Spain |
| 59.2 | Selected | Pietro de Torres † | Archbishop of Trani, Italy |
| 26 Mar | 71.2 | Died | José Sanchís y Ferrandis (Jerez), O. de M. † | Archbishop of Tarragona, Spain |
| 27 Mar | 34.2 | Ordained Priest | Orazio Filippo Spada † | Priest | Cardinal, Bishop of Osimo, Italy |
| 30 Mar | | Born | Blas Roldán, O.S.H. † | | Bishop of Segorbe, Spain |
| 5 Apr | | Born | Ciro de Alteriis † | | Bishop of Acerra, Italy |
| 44.9 | Died | Diego Ibáñez de la Madrid y Bustamente † | Bishop of Ceuta, Spain |
| 9 Apr | 46.2 | Died | Juan de Villacé y Vozmediano † | Bishop of Plasencia, Spain |
| 10 Apr | 51.2 | Selected | Armand de Montmorin de Saint-Hérem † | Archbishop of Vienne, France |
| 51.2 | Selected | Séraphin de Pajot de Plouy † | Bishop of Die, France |
| 13 Apr | 51.0 | Died | José de Jesús María Fajardo, O.A.D. † | Bishop of Alghero, Italy |
| 16 Apr | | Born | Francesco Guidi † | | Archbishop of Pisa, Italy |
| 18 Apr | 49.2 | Ordained Bishop | Charles de Villeneuve de Vence † | Bishop of Glandèves, France |
| 19 Apr | 39.7 | Confirmed | Didacus Álvares † | Archbishop of Cranganore (Angamala), India | Archbishop Emeritus |
| 30.7 | Appointed | Emilio Giacomo Cavaliere, C.P.O. † | Bishop of Troia, Italy |
| 65.2 | Appointed | Benedetto Luperti † | Bishop of Cagli, Italy |
| Born | Adam Imre Majthényi Kesselökö † | | Titular Bishop of Esbus |
| 59.2 | Appointed | Juan Queipo de Llano y Valdés † | Archbishop of La Plata o Charcas, Bolivia |
| 20 Apr | 82.3 | Died | Giovanni Carlo Antonelli † | Bishop of Ferentino, Italy |
| 22.3 | Selected | Joseph Clemens von Bayern von Wittelsbach † | Bishop of Liège, Belgium | Archbishop of Köln {Cologne}, Germany |
| 25 Apr | | Born | Nikolaus (Anton Sebastian) Imfeld, O.S.B. † | | Abbot of Maria Einsiedeln, Switzerland |
| 65.3 | Ordained Bishop | Benedetto Luperti † | Bishop of Cagli, Italy |
| 28 Apr | 52.3 | Died | Michel Phélypeaux de La Vrillière † | Archbishop of Bourges, France |
| May | 50.3 | Died | Alfonso de Aloysio † | Bishop of Squillace, Italy |
| 1 May | 23.2 | Ordained Priest | Arcangelo Maria Luc Thomas Ciccarelli, O.P. † | Priest of Order of Friars Preachers | Bishop Emeritus of Ugento, Italy |
| 2 May | 39.7 | Ordained Bishop | Didacus Álvares † | Archbishop of Cranganore (Angamala), India | Archbishop Emeritus |
| 61.2 | Ordained Bishop | Isidoro Aparici Gilart † | Titular Bishop of Croae | Auxiliary Bishop of Valencia, Spain |
| 30.7 | Ordained Bishop | Emilio Giacomo Cavaliere, C.P.O. † | Bishop of Troia, Italy |
| 30.8 | Ordained Bishop | Antonio Giustiniani † | Bishop of Syros (e Milos), Greece | Archbishop of Naxos, Greece |
| 4 May | 33.9 | Died | Ludwig Anton von Pfalz-Neuburg † | Bishop-Elect of Worms, Germany | Bishop |
| 6 May | | Born | Isidoro Pitellia, O.M. † | | Bishop of Termoli, Italy |
| 9 May | 56.6 | Ordained Bishop | Louis-Marie Pidou de Saint-Olon, C.R. † | Bishop of Baghdad, Iraq |
| Born | Nicola Stanislavich, O.F.M. Obs. † | | Bishop of Csanád, Hungary |
| 11 May | 45.2 | Died | Aleksandar Ignacije Mikulić Brokunovečki † | Bishop of Zagreb (Agram), Croatia |
| 15 May | 70.5 | Died | Eustache Le Séneschal de Carcado † | Bishop of Tréguier, France |
| 16 May | 24.0 | Ordained Priest | Antonio Bianchi di Gennaro, O.F.M. Obs. † | Priest of Order of Observant Friars Minor | Bishop of Mottola (Motula), Italy |
| 17 May | | Confirmed | François Chevalier de Saulx † | Bishop of Alès (Alais), France |
| 39.7 | Confirmed | Charles-Madeleine Frézeau de Frèzelière † | Bishop of La Rochelle, France |
| 49.8 | Appointed | Savo (Savio) Millini (Mellini) † | Archbishop (Personal Title) of Nepi e Sutri, Italy | Cardinal, Bishop |
| 22 May | 72.3 | Died | Ignatius Fiumi, O.P. † | Bishop of Polignano (Polinianum), Italy |
| 27 May | | Born | François Joseph Antoine de los Reyes † | | Bishop of Oria, Italy |
| 29 May | 51.4 | Selected | Olivier Jégou de Kervilio † | Bishop of Tréguier, France |
| 37.7 | Selected | Léon Potier de Gesvres † | Archbishop of Bourges, France | Cardinal, Archbishop Emeritus |
| 30 May | 45.9 | Installed | Daniel de Francheville † | Bishop of Périgueux (Vesuna), France |
| Jun | 74.4 | Died | Giulio Vincenzo Gentile, O.P. † | Archbishop of Genova, Italy |
| 3 Jun | 57.4 | Died | Nilo Catalano, O.S.B.I. † | Archbishop of Durrës (Durazzo) (Albanian), Albania |
| 51.7 | Died | Johann Friedrich von Waldstein, O.Cr. † | Archbishop of Praha {Prague}, Czechia |
| 4 Jun | 52.2 | Died | Albert de Hornes † | Bishop of Gent {Ghent, Gand}, Belgium |
| 5 Jun | 24.0 | Ordained Priest | Nicola Cani, O.P. † | Priest of Order of Friars Preachers | Bishop of Bosa, Italy |
| 27.2 | Ordained Priest | Jean-Louis de La Bourdonnaye † | Priest | Bishop of Saint-Pol-de-Léon, France |
| 25.4 | Ordained Priest | Jean-Louis du Bouchet de Sourches † | Priest | Bishop of Dol, France |
| 24.8 | Ordained Priest | Domenico Angelo de Pace † | Priest | Archbishop of Lanciano, Italy |
| 24.4 | Ordained Priest | Konstanty Moszyński, O.S.P.P.E. † | Priest of Order of Saint Paul the First Hermit | Bishop of Inflanty (Livonia)-Pilten, Poland |
| 22.9 | Ordained Priest | Gioacchino Maria Oldi, O. Carm. † | Priest of Order of Our Lady of Mt. Carmel | Bishop of Terracina, Priverno e Sezze, Italy |
| 24.0 | Ordained Priest | Gennaro Scalea † | Priest | Bishop of San Severo, Italy |
| 22.0 | Ordained Deacon | Julius Nicolaus Torno † | Deacon of Napoli {Naples}, Italy | Titular Bishop of Arcadiopolis in Asia |
| 24.4 | Ordained Priest | Alessandro Zondadari † | Priest of Siena, Italy | Archbishop |
| 8 Jun | 29.8 | Appointed | Franz Ludwig am Rhein zu Neuburg † | Bishop of Worms, Germany | Archbishop-Elect of Mainz, Germany |
| 10 Jun | | Born | Octavius Antonius Baiardi † | | Titular Archbishop of Tyrus |
| 13 Jun | | Born | Antônio de Nossa Senhora do Desterro Malheiro, O.S.B. † | | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 16 Jun | 57.6 | Died | Francesco Azzolini † | Bishop of Ripatransone, Italy |
| 72.4 | Died | Costanzo Zani, O.S.B. † | Bishop of Imola, Italy |
| 17 Jun | 64.7 | Died | Philip Thomas Howard of Norfolk, O.P. † | Cardinal, Cardinal-Priest of Santa Maria sopra Minerva |
| Died | Johann Stieff von Kränzen † | Auxiliary Bishop of Gurk, Austria |
| 21 Jun | 48.4 | Appointed | Valeriano Chierichelli † | Bishop of Ferentino, Italy | Bishop Emeritus |
| 51.3 | Appointed | Rodrigo de Moura Telles † | Bishop of Guarda, Portugal | Archbishop of Braga, Portugal |
| 24 Jun | 77.4 | Died | Carlo Stefano Anastasio Ciceri † | Cardinal, Bishop of Como, Italy |
| 26 Jun | | Born | Scipione de’ Lorenzi † | | Bishop of Larino, Italy |
| 27 Jun | 48.4 | Ordained Bishop | Valeriano Chierichelli † | Bishop of Ferentino, Italy | Bishop Emeritus |
| 39.8 | Ordained Bishop | Charles-Madeleine Frézeau de Frèzelière † | Bishop of La Rochelle, France |
| 28 Jun | 40.2 | Appointed | Francisco Spinola, S.J. † | Bishop of Nanking [Nanjing], China | Priest of Society of Jesus |
| 40.2 | Died | Francisco Spinola, S.J. † | Priest of Society of Jesus |
| 30 Jun | 71.4 | Died | Kazimierz Jan Szczuka † | Bishop of Chelmno (Culma, Kulm), Poland |