| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 66.0 | Died | Antonio de Acevedo † | Titular Bishop of Fussala |
| 15.1 | Professed | Domenico Andrea Cavalcanti, C.R. † | Member of Congregation of Clerics Regular | Archbishop of Trani, Italy |
| Born | Gabriel Cortois de Quincey † | | Bishop of Belley, France |
| 26.0 | Ordained Priest | Louis-Guy de Guérapin de Vauréal † | Priest | Bishop Emeritus of Rennes, France |
| 17.6 | Professed | Ludwig Hatteisen, O.S.B. † | Member of Order of Saint Benedict | Auxiliary Bishop of Hildesheim, Germany |
| Appointed | Basile Hesro † | Bishop of Mardin (Chaldean), Turkey |
| Ordained Bishop | Basile Hesro † | Bishop of Mardin (Chaldean), Turkey |
| 61.2 | Died | Jan Mikolaj (Damascene) Łubieniecki, O.P. † | Bishop of Bacău, Romania |
| Born | Grigore Maior, O.S.B.M. † | | Bishop Emeritus of Făgăraş (Romanian), Romania |
| Born | Miguel Moreno y Ollo † | | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| Born | Nicolaus Radovani † | | Archbishop of Durrës (Durazzo), Albania |
| 23.1 | Ordained Priest | Giuseppe Schirò, O.S.B.I. † | Priest of Ordine Basiliano Italiano di Grottaferrata | Archbishop of Durrës (Durazzo) (Albanian), Albania |
| 43.0 | Ceased | Vincent Zmajević † | Apostolic Administrator of Budua (Budva), Montenegro | Archbishop of Zadar (Zara), Croatia |
| Jan | 64.0 | Died | Antonio Aiello † | Bishop of Montepeloso, Italy |
| 65.5 | Died | Antonio Forteguerra, O.S.B. † | Bishop of Pienza, Italy |
| 1 Jan | 77.0 | Died | Nicolò d’Arcano † | Bishop of Comacchio, Italy |
| 6 Jan | 56.4 | Died | Pedro Reyes de los Ríos de Lamadrid, O.S.B. † | Bishop of Yucatán (Mérida), México |
| 22.9 | Ordained Priest | Scipione Sersale † | Priest | Bishop of Lecce, Italy |
| 11 Jan | 54.3 | Died | Anton Ignaz Müntzer † | Auxiliary Bishop of Wrocław (Breslau), Poland |
| 14 Jan | | Born | Felice Antonio Bianchi † | | Auxiliary Bishop of Modena, Italy |
| Born | Michele Pes † | | Bishop of Ampurias e Civita, Italy |
| 17 Jan | 58.6 | Appointed | Juan Bautista Alvarez de Toledo, O.F.M. Obs. † | Bishop of Santiago de Guatemala | Bishop of Guadalajara, Jalisco, México |
| 42.3 | Appointed | Giberto Bartolomeo Borromeo † | Cardinal, Bishop of Novara, Italy |
| 69.0 | Appointed | Julián Cano y Tevar, O. Carm. † | Bishop of Ávila, Spain |
| 53.0 | Appointed | Carlo Francesco Gallarini † | Bishop of Bobbio, Italy |
| 57.0 | Confirmed | Francisco Solís Hervás, O. de M. † | Bishop of Córdoba, Spain |
| 54.0 | Appointed | Orazio Filippo Spada † | Archbishop (Personal Title) of Osimo, Italy | Cardinal, Bishop |
| 19 Jan | | Born | Giuseppe Maria Contesini † | | Titular Archbishop of Athenae |
| 28 Jan | 51.4 | Ordained Bishop | Nicolao Gaetano Aprosio, C.R. † | Bishop of Nebbio, France |
| 42.2 | Ordained Bishop | Carolus Polodig, O.C.D. † | Titular Archbishop of Cyrrhus | Vicar Apostolic of Smirne, Turkey |
| Feb | 77.0 | Died | Francesco Crispo † | Bishop of Santorini {Thira}, Greece |
| 65.0 | Died | Francesco Antonio Gaudiosi, O.P. † | Bishop of Bova, Italy |
| 1 Feb | 40.3 | Appointed | Giovanni Battista Maria Multedo, O.C.D. † | Vicar Apostolic of Malabar, India |
| 40.3 | Appointed | Giovanni Battista Maria Multedo, O.C.D. † | Titular Bishop of Limyra | Vicar Apostolic of Malabar, India |
| 4 Feb | 53.0 | Ordained Bishop | Louis Le Bel, O.F.M. Rec. † | Titular Bishop of Bethleem |
| 71.0 | Died | José Sicardo Martinez, O.S.A. † | Archbishop of Sassari, Italy |
| 7 Feb | 72.0 | Appointed | Martin Bernhard Just von Friedenfeld † | Prefect of Lausitz (Lusatia), Germany |
| 12 Feb | | Born | Saverio Palica, O.S.B. † | | Bishop of Andria, Italy |
| 16 Feb | | Born | Vigilius Augustin Maria von Firmian † | | Bishop Emeritus of Lavant, Slovenia |
| 18 Feb | 56.1 | Ordained Bishop | Malachy Dulany † | Bishop of Ossory, Ireland |
| 58.1 | Ordained Bishop | Luke Fagan † | Bishop of Meath, Ireland | Archbishop of Dublin, Ireland |
| 21 Feb | | Born | Pietro Paolo Leonardi † | | Bishop of Ascoli Piceno, Italy |
| 78.5 | Died | Innocenzo Migliavacca (Milliavacca), O. Cist. † | Bishop of Asti, Italy |
| 24 Feb | 24.3 | Ordained Priest | Fabrizio Borgia † | Priest | Bishop of Ferentino, Italy |
| 29.6 | Ordained Priest | Antonio Giuseppe Carcassona † | Priest | Bishop of Ales e Terralba, Italy |
| 22.9 | Ordained Priest | Francesco Lanfreschi † | Priest | Archbishop of Acerenza e Matera, Italy |
| 46.6 | Ordained Priest | Jean-Ernest de Löwenstein-Wertheim † | Priest | Bishop of Tournai {Doornik}, Belgium |
| 23.9 | Ordained Priest | Antonio Maria Pescatori, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Gallipoli, Italy |
| 25 Feb | 53.1 | Ordained Bishop | Carlo Francesco Gallarini † | Bishop of Bobbio, Italy |
| 46.6 | Ordained Bishop | Jean-Ernest de Löwenstein-Wertheim † | Bishop of Tournai {Doornik}, Belgium |
| 26 Feb | 46.3 | Appointed | Giovanni Battista Conventati, C.O. † | Archbishop of Dubrovnik (Ragusa), Croatia | Bishop Emeritus of Terracina, Priverno e Sezze, Italy |
| 64.0 | Appointed | Francisco del Rincón, O.M. † | Archbishop (Personal Title) of Caracas, Santiago de Venezuela | Archbishop of Santafé en Nueva Granada, Colombia |
| 59.1 | Confirmed | Jacques des Maretz † | Archbishop of Auch, France |
| 50.4 | Appointed | Louis-François Du Plessis de Mornay, O.F.M. Cap. † | Titular Bishop of Eumenia | Bishop Emeritus of Québec, Canada |
| 50.4 | Confirmed | Louis-François Du Plessis de Mornay, O.F.M. Cap. † | Coadjutor Bishop of Québec, Canada | Bishop Emeritus |
| 47.8 | Appointed | Jaime de Mimbela, O.P. † | Bishop of Santa Cruz de la Sierra, Bolivia | Bishop of Trujillo, Peru |
| 52.7 | Appointed | Manuel de Mimbela y Morlans, O.F.M. † | Bishop of Guadalajara, Jalisco, México |
| 51.5 | Appointed | Jacinto Olivera y Pardo † | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 43.1 | Appointed | Giuseppe Maria Perrimezzi, O.M. † | Bishop of Oppido Mamertina, Italy | Bishop Emeritus |
| 41.1 | Appointed | Pedro de Tapiz y Garcia † | Bishop of Durango, México |
| 57.1 | Died | Pedro Vásquez de Velasco † | Bishop of Santa Cruz de la Sierra, Bolivia |
| 4 Mar | 46.3 | Ordained Bishop | Giovanni Battista Conventati, C.O. † | Archbishop of Dubrovnik (Ragusa), Croatia | Bishop Emeritus of Terracina, Priverno e Sezze, Italy |
| 6 Mar | 67.1 | Selected | Silvestre García Escalona † | Bishop of Salamanca, Spain |
| 7 Mar | 55.1 | Selected | Rodrigo Marín y Rubio † | Bishop of Jaén, Spain |
| 46.1 | Selected | Diego Muñoz Baquerizo † | Bishop of Segorbe, Spain |
| 11 Mar | 61.3 | Ordained Bishop | Sancho Antonio Belunza Corcuera † | Bishop of Ceuta, Spain | Bishop of Coria, Spain |
| 33.5 | Ordained Deacon | Paolo Bonavisa † | Deacon | Bishop of Spoleto, Italy |
| 12 Mar | 59.9 | Selected | José Díez Santos de San Pedro † | Bishop of Ciudad Rodrigo, Spain |
| 14 Mar | 25.2 | Ordained Priest | Johann Friedrich Adolf von Hörde zu Schönholthausen † | Priest of Hildesheim, Germany | Vicar Apostolic of Nordic Missions, Germany |
| 17 Mar | 33.5 | Ordained Priest | Paolo Bonavisa † | Priest | Bishop of Spoleto, Italy |
| Born | Maxmilián von Hamilton † | | Bishop of Olomouc (Olmütz), Czechia |
| 22.7 | Ordained Deacon | Meinwerk Kaup, O.S.B. † | Deacon of Order of Saint Benedict | Auxiliary Bishop of Paderborn, Germany |
| 21 Mar | 52.9 | Appointed | Giovanni Vincenzo Castelli, O.P. † | Archbishop (Personal Title) of Urbania e Sant’Angelo in Vado, Italy | Bishop |
| 57.2 | Appointed | José Pérez de Lanciego Eguiluz y Mirafuentes, O.S.B. † | Archbishop of México, Federal District |
| 72.2 | Appointed | Diego Morcillo Rubio de Auñón de Robledo, O.SS.T. † | Archbishop of La Plata o Charcas, Bolivia | Archbishop of Lima, Peru |
| 63.8 | Confirmed | Jerónimo del Valle Ledesma † | Bishop of Almería, Spain |
| 27 Mar | 61.2 | Selected | Manuel Pérez Araciel y Rada † | Archbishop of Zaragoza, Spain |
| 31 Mar | 66.0 | Selected | François Balbe de Berton de Crillon † | Archbishop of Vienne, France |
| 55.4 | Appointed | Joseph de Maurel du Chaffaut † | Bishop of Saint-Paul-Trois-Châteaux, France |
| Born | Domenico Morelli † | | Bishop Emeritus of Strongoli, Italy |
| Apr | 61.1 | Died | Timóteo do Sacramento, O.S.P.P.E. † | Bishop of São Luís do Maranhão, Brazil |
| 4 Apr | | Born | Adam Stanisław Krasiński † | | Bishop Emeritus of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 6 Apr | 88.9 | Died | Gasparo Carpegna † | Prefect of the Congregation of Bishops and Regulars | Cardinal, Prefect of the Roman Curia - Other |
| 8 Apr | 69.2 | Ordained Bishop | Andrés Caperó Agramunt, O.C.D. † | Bishop of Lugo, Spain |
| 9 Apr | 57.0 | Selected | José Espejo y Cisneros † | Bishop of Orihuela, Spain | Bishop Emeritus of Calahorra y La Calzada, Spain |
| 15 Apr | | Ordained Bishop | Francis Burke † | Archbishop of Tuam, Ireland |
| 73.2 | Ordained Bishop | Ambrose O’Madden † | Bishop of Clonfert, Ireland |
| 16 Apr | 58.7 | Appointed | Fulvio Astalli † | Cardinal-Bishop of Sabina | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 53.5 | Appointed | Francesco Bentini † | Bishop of Comacchio, Italy |
| 57.2 | Died | Jean-François Chamillart † | Bishop of Senlis, France |
| 63.6 | Appointed | Ferdinando d’Adda † | Cardinal-Priest of San Pietro in Vincoli | Cardinal, Cardinal-Bishop of Albano |
| 51.0 | Installed | Giulio Piazza † | Cardinal-Priest of San Lorenzo in Panisperna | Cardinal, Archbishop (Personal Title) of Faenza, Italy |
| 58.4 | Appointed | Francisco Rodríguez Mendarozqueta y Zárate † | Bishop of Sigüenza, Spain |
| 22 Apr | 53.5 | Ordained Bishop | Francesco Bentini † | Bishop of Comacchio, Italy |
| 50.6 | Ordained Bishop | Louis-François Du Plessis de Mornay, O.F.M. Cap. † | Titular Bishop of Eumenia | Bishop Emeritus of Québec, Canada |
| 23 Apr | 59.4 | Selected | Francisco Olaso Hipenza, O.S.A. † | Bishop of Lérida, Spain |
| 25 Apr | | Born | Georges Jean Schiner, C.R.A. † | | Abbot of Saint-Maurice, Switzerland |
| 26 Apr | | Born | Diego Antonio Díez Madroñero † | | Bishop of Caracas, Santiago de Venezuela |
| 1 May | 45.2 | Ordained Bishop | Raymund Ferdinand von Rabatta † | Bishop of Passau, Germany |
| 2 May | | Born | Ludwig Philipp Behelm † | | Auxiliary Bishop of Mainz, Germany |
| 7 May | 46.0 | Appointed | Fernando de Faro † | Bishop of Elvas, Portugal |
| 48.0 | Appointed | Joseph (a Jesu Maria) Fonseca, O.P. † | Auxiliary Bishop of Évora, Portugal |
| 48.0 | Appointed | Joseph (a Jesu Maria) Fonseca, O.P. † | Titular Bishop of Patara | Auxiliary Bishop of Évora, Portugal |
| 57.3 | Appointed | Georgius Gyllany † | Bishop of Knin (Tinin), Croatia |
| 13 May | 58.7 | Ordained Bishop | Fulvio Astalli † | Cardinal-Bishop of Sabina | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 67.9 | Died | Antonio della Marra, C.R. † | Bishop of Carinola (Calina), Italy |
| 17 May | 65.0 | Died | Gianalberto Badoer (Badoaro) † | Cardinal, Bishop of Brescia, Italy |
| 19 May | 51.3 | Selected | Ennemond-Flodoard Moret de Bourchenu † | Bishop of Vence, France | Bishop Emeritus |
| 35.3 | Selected | François-Firmin Trudaine † | Bishop of Senlis, France |
| 21 May | 59.4 | Ordained Bishop | Esteban Bellido Guevara † | Bishop of Palencia, Spain |
| 22 May | 65.9 | Died | António Vieira Leitão † | Bishop of Angra, Portugal |
| 23 May | | Born | Antonio Ripanti † | | Bishop of Orvieto, Italy |
| 24 May | | Born | Joaquim Borges de Figueroa † | | Archbishop Emeritus of São Salvador da Bahia, Brazil |
| 26 May | 22.9 | Ordained Priest | Vincenzo Maria de Francisco e Galletti, O.P. † | Priest of Order of Friars Preachers | Bishop of Lipari, Italy |
| 28 May | 46.6 | Appointed | Genesio Calchi † | Bishop of Lucca, Italy |
| 50.2 | Appointed | Lucas Conejero de Molina † | Bishop of Islas Canarias {Canary Islands}, Spain | Archbishop of Burgos, Spain |
| 60.1 | Confirmed | José Díez Santos de San Pedro † | Bishop of Ciudad Rodrigo, Spain |
| 57.1 | Confirmed | José Espejo y Cisneros † | Bishop of Orihuela, Spain | Bishop Emeritus of Calahorra y La Calzada, Spain |
| 55.4 | Confirmed | Rodrigo Marín y Rubio † | Bishop of Jaén, Spain |
| 59.5 | Confirmed | Francisco Olaso Hipenza, O.S.A. † | Bishop of Lérida, Spain |
| 63.7 | Appointed | Luigi Priuli † | Cardinal, Cardinal-Priest of San Marco |
| Jun | 55.4 | Selected | Simeón Guinda Apéztegui, O.S.A. † | Bishop of Urgell, Spain |
| 8 Jun | 81.4 | Died | Claude de Saint-Georges † | Archbishop of Lyon, France |
| 10 Jun | 23.2 | Professed | Vincenzo Dominico Bragadin, O.F.M. Cap. † | Member of Order of Friars Minor Capuchin | Bishop of Chioggia, Italy |
| 46.6 | Ordained Bishop | Genesio Calchi † | Bishop of Lucca, Italy |
| 13 Jun | 52.4 | Appointed | Agostino Nicola degl’Abbati Olivieri, O.E.S.A. † | Titular Bishop of Targa | Titular Bishop of Porphyreon |
| 67.4 | Confirmed | Silvestre García Escalona † | Bishop of Salamanca, Spain |
| 55.4 | Appointed | Juan José Llamas Rivas, O. Carm. † | Bishop of Panamá |
| 61.4 | Confirmed | Manuel Pérez Araciel y Rada † | Archbishop of Zaragoza, Spain |
| 58.4 | Appointed | Antonio Prado Sandoval y Rojas † | Titular Bishop of Thermae Basilicae |
| 66.4 | Appointed | Ascanio Silvestri † | Bishop of Pienza, Italy |
| 33.1 | Appointed | Elias Daniel von Sommerfeld † | Auxiliary Bishop of Wrocław (Breslau), Poland | Auxiliary Bishop Emeritus |
| 33.1 | Appointed | Elias Daniel von Sommerfeld † | Titular Bishop of Leontopolis in Bithynia | Auxiliary Bishop Emeritus of Wrocław (Breslau), Poland |
| 21 Jun | | Born | Władysław Wierusz Walknowski (Walichnowski) † | | Auxiliary Bishop of Poznań, Poland |
| 24 Jun | | Selected | Pedro Gregorio Padilla † | Bishop of Huesca, Spain |
| 29 Jun | | Born | Pietro Paolo Tosi † | | Bishop of Ferentino, Italy |
| 30 Jun | 55.3 | Selected | José Ulzurrun de Asanza y Civera † | Bishop of León, Spain |