| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 64.9 | Died | Bartolomeo Fargna † | Titular Bishop of Emmaüs |
| Appointed | Giovanni Maurizio Gustavo † | Archbishop of Palermo, Italy |
| Appointed | Francisco de Izarregui † | Bishop of Santiago de Cuba | Former Bishop-Elect of Santiago de Cuba |
| Resigned | Francisco de Izarregui † | Bishop-Elect of Santiago de Cuba | Former Bishop-Elect of Santiago de Cuba |
| Born | Diego de Jesus Jardim, O.S.H. † | Sabará, Brazil | Bishop of Elvas, Portugal |
| 62.5 | Appointed | Pietro Ottoboni † | Archpriest of the Arcibasilica di San Giovanni in Laterano {Saint John Lateran Basilica} | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 42.0 | Died | Alejo Fernando de Rojas y Acevedo † | Bishop of La Paz, Bolivia |
| 61.7 | Died | João de Sahagún, O.A.D. † | Bishop of São Tomé e Príncipe |
| 3 Jan | | Born | Onofrio Maria Gennari † | Maratea | Bishop of Montemarano, Italy |
| 6 Jan | 23.0 | Ordained Priest | Pietro Silvio di Gennaro † | Priest | Bishop of Venosa, Italy |
| 36.9 | Ordained Bishop | Giovanni Federico Orsini Rosa † | Bishop of Krk (Veglia), Croatia | Bishop of Nona (Nin), Croatia |
| 8 Jan | 44.4 | Ordained Bishop | Giovanni Mercurino Arborio di Gattinara, B. † | Bishop of Alessandria (della Paglia), Italy |
| 54.8 | Appointed | Jean-François Boyer, C.R. † | Bishop of Mirepoix, France | Bishop Emeritus |
| 41.0 | Ordained Bishop | Michel de Verthamon de Chavagnac † | Bishop of Montauban, France |
| 10 Jan | | Born | Cesare Alberico Lucini † | Milan | Apostolic Nuncio to Spain |
| 16 Jan | | Born | Andrea Mirelli, O.S.B. † | Napoli | Archbishop of Chieti, Italy |
| 17 Jan | 48.8 | Ordained Priest | Joaquín Fernández de Portocarrero Mendoza † | Priest | Cardinal, Cardinal-Bishop of Sabina |
| 20 Jan | | Born | Filippo d’Ambrogio † | Napoli | Bishop of Caiazzo, Italy |
| 21 Jan | | Appointed | Augustinus Łubieniecki, O.S.B.M. † | Titular Bishop of Diospolis in Thracia |
| 22 Jan | | Born | Agostino Gervasio, O.S.A. † | Montorio | Archbishop of Capua, Italy |
| 40.8 | Died | Kornylij Lebeckyj, O.S.B.M. † | Bishop of Foreign Diocese |
| 26 Jan | 71.7 | Died | Giovanni Francesco Barbarigo † | Cardinal, Bishop of Padova {Padua}, Italy |
| 29 Jan | | Died | Thomas Flynn † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 55.5 | Ordained Bishop | Tommaso Giosafat Melina † | Titular Bishop of Zama Major | Bishop of Bova, Italy |
| 31 Jan | | Born | Ottavio Boni † | Rome | Titular Archbishop of Nazianzus |
| Feb | 81.4 | Died | Domenico Galisi † | Bishop of Lettere (-Gragnano), Italy |
| 1 Feb | | Born | François Bareau de Girac † | Angoulême | Bishop Emeritus of Rennes, France |
| 2 Feb | | Born | Jan Stefan Giedroyc † | Giedrojcie | Bishop of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 59.6 | Ordained Bishop | Apollonio Lupi, C.R.L. † | Titular Bishop of Himeria |
| 47.6 | Installed | Franz Georg von Schönborn † | Archbishop of Trier, Germany |
| 3 Feb | 91.0 | Died | Philips-Erard van der Noot † | Bishop of Gent {Ghent, Gand}, Belgium |
| 5 Feb | 35.1 | Ordained Bishop | Hardouin de Chaslon de Maisonnoble † | Bishop of Lescar, France |
| 51.1 | Ordained Bishop | Francesco Saraceni, O.F.M. † | Titular Bishop of Loryma | Vicar Apostolic of Shansi {Scian-Si} (Chan-Si), China |
| 6 Feb | 69.9 | Resigned | Antoine de Charpin de Genetines † | Bishop of Limoges, France | Bishop Emeritus |
| 7 Feb | | Born | Gregorio Cerati, O.S.B. † | Parma | Bishop of Piacenza, Italy |
| 8 Feb | 34.0 | Appointed | Erasmus Bertone (Bortoni) † | Titular Bishop of Eumenia |
| 51.0 | Appointed | Domenico Maria de Liguori (Liguoro), C.R. † | Bishop of Cava (de’ Tirreni), Italy |
| 34.2 | Appointed | Ildefonso del Tufo, O.S.B. † | Bishop of Gerace, Italy | Bishop Emeritus |
| 61.1 | Confirmed | Jean d’Yse (d’Ize) de Saléon † | Bishop of Agen, France | Archbishop of Vienne, France |
| 72.0 | Appointed | Vincenzo Ferrero, O.P. † | Bishop of Lucera, Italy |
| 53.9 | Appointed | Juan Garcia Avello y Castrillón † | Bishop of Oviedo, Spain |
| 48.4 | Appointed | Teodor Machciński † | Titular Bishop of Palaeopolis in Asia |
| 46.1 | Confirmed | François-Honoré-Lancelot de Maniban de Casaubon † | Bishop of Bordeaux, France |
| 41.1 | Appointed | Alexander Máriási † | Bishop of Knin, Croatia |
| 52.1 | Appointed | Amador Merino y Malaguillas † | Bishop of Badajoz, Spain |
| 54.5 | Appointed | Giovanni Minotto Ottoboni † | Bishop of Padova {Padua}, Italy |
| 27.2 | Appointed | Moritz Adolf Karl von Sachsen-Zeitz (Saský) † | Titular Bishop of Pharsalus | Bishop of Litoměřice, Czech Republic |
| 60.9 | Elevated to Cardinal | Alamanno Salviati † | Cardinal, Cardinal-Priest of Santa Maria in Ara Coeli |
| 9 Feb | 66.4 | Died | Nicolaus Pohmajevich † | Bishop of Senj (-Modruš), Croatia |
| 11 Feb | 64.3 | Died | Joannes Bapt. Laghi, C.R.S. † | Archbishop of Split (Spalato), Croatia |
| 12 Feb | 34.2 | Ordained Bishop | Ildefonso del Tufo, O.S.B. † | Bishop of Gerace, Italy | Bishop Emeritus |
| 62.1 | Died | Jacinto Valledor Fresno † | Bishop of Osma, Spain |
| 14 Feb | 58.5 | Died | Marco Antonio Ansidei † | Cardinal, Bishop of Perugia, Italy |
| 19 Feb | 69.4 | Died | Agostino Pipia, O.P. † | Cardinal, Bishop Emeritus of Osimo e Cingoli, Italy |
| 21 Feb | 49.1 | Succeeded | Niccolò Paolo Andrea Coscia † | Archbishop of Benevento, Italy | Cardinal, Archbishop Emeritus |
| 54.3 | Resigned | Nicolò Maria Lercari † | Secretary of the Secretariat of State | Cardinal, Secretary Emeritus |
| Born | Benito Uría Valdés, O.S.B. † | Cangas de Tineo | Bishop of Ciudad Rodrigo, Spain |
| 22 Feb | | Born | Giovanni Ottavio Manciforte Sperelli † | Assisi, Italy | Cardinal, Titular Archbishop of Teodosia |
| 23 Feb | 81.1 | Died | Pietro Francesco (Vincenzo Maria) Orsini de Gravina, O.P. † | Pope (Roma {Rome}, Italy) |
| 24 Feb | 24.3 | Ordained Priest | Giuseppe Boccarelli † | Priest | Bishop of Termoli, Italy |
| 49.5 | Ordained Bishop | St. Pedro Sanz, O.P. † | Titular Bishop of Mauricastro | Vicar Apostolic of Fo-Kien, China |
| 28 Feb | 78.2 | Died | Charles Maigrot, M.E.P. † | Vicar Apostolic Emeritus of Fo-Kien, China |
| Mar | | Born | Michael Chomiński † | Woistomiae | Auxiliary Bishop Emeritus of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania |
| 66.8 | Died | Antonio Giustiniani † | Archbishop of Naxos, Greece |
| 4 Mar | 34.5 | Ordained Priest | Giuseppe Palma † | Priest | Archbishop of Lucca, Italy |
| 12 Mar | 24.2 | Ordained Priest | Miguel de Bulhões e Souza, O.P. † | Priest of Order of Friars Preachers | Bishop of Leiria, Portugal |
| 88.2 | Died | Diego Morcillo Rubio de Suñón de Robledo, O.SS.T. † | Archbishop of Lima, Peru |
| 14 Mar | 62.0 | Died | Giuseppe Maria Positano, O.P. † | Archbishop of Salerno, Italy |
| 16 Mar | 66.8 | Died | Giuseppe Falconio † | Bishop of Ortona a Mare e Campli, Italy |
| 19 Mar | 48.3 | Ordained Bishop | José Sancho Granado † | Bishop of Salamanca, Spain |
| 41.0 | Ordained Bishop | José Félix Valverde † | Bishop of Caracas, Santiago de Venezuela | Bishop of Michoacán, México |
| 20 Mar | 29.0 | Selected | Armand Bazin de Bezons † | Bishop of Carcassonne, France |
| 21 Mar | 71.1 | Died | Carlo Pignatelli, C.R. † | Bishop of Gaeta, Italy |
| 22 Mar | | Born | Francesco Angelo Jacoboni † | Terni | Bishop of Amelia, Italy |
| 76.9 | Died | Benedetto Pamphilj, O.S.Io.Hieros. † | Cardinal, Librarian of the Vatican Library |
| 23 Mar | 71.2 | Died | Giacinto Gaetano Chiurlia (Chyurlia), O.P. † | Bishop of Giovinazzo, Italy |
| 25 Mar | 34.1 | Ordained Bishop | Erasmus Bertone (Bortoni) † | Titular Bishop of Eumenia |
| 24.1 | Ordained Priest | Johann Adam Buckel † | Priest of Würzburg, Germany | Auxiliary Bishop of Speyer, Germany |
| 30.8 | Ordained Priest | Giovanni Battista Machin Espiga † | Priest | Bishop of Bosa, Italy |
| 28 Mar | | Died | José Pereto Ricarte, O. de M. † | Bishop of Almería, Spain |
| Apr | 54.0 | Ordained Bishop | Juan Garcia Avello y Castrillón † | Bishop of Oviedo, Spain |
| 5 Apr | 80.3 | Died | Bartolomeo Castelli, C.R. † | Bishop of Mazara del Vallo, Italy |
| 68.2 | Died | Antonius Dominikus von Wolkenstein-Trostburg † | Bishop of Trento, Italy |
| 8 Apr | 26.6 | Ordained Priest | Johann Theodor von Bayern † | Priest of Regensburg, Germany | Cardinal, Bishop |
| 24.4 | Ordained Priest | Girolamo Clarelli † | Priest | Bishop of Rieti, Italy |
| 24.5 | Ordained Priest | Joseph Ferdinand Guidobald von Spaur und Valör † | Priest of Salzburg, Austria | Titular Bishop of Abila in Palaestina |
| 10 Apr | 22.4 | Ordained Priest | Johann Franz Anton von Khevenhüller † | Priest of Augsburg, Germany | Bishop Emeritus of Wiener Neustadt, Austria |
| 11 Apr | | Died | Petrus Bapt. de Garbagnate, O.F.M. † | Titular Archbishop of Cartagine |
| 16 Apr | | Born | Antonius Belglava † | Iadren | Bishop of Trogir (Traù), Croatia |
| 53.5 | Ordained Priest | Francesco Antonio Correr, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Patriarch of Venezia {Venice}, Italy |
| 61.3 | Ordained Bishop | Jean d’Yse (d’Ize) de Saléon † | Bishop of Agen, France | Archbishop of Vienne, France |
| 23 Apr | 66.2 | Died | Bernardo Maria Conti, O.S.B. † | Cardinal, Bishop Emeritus of Terracina, Priverno e Sezze, Italy |
| 49.7 | Ordained Bishop | Antal Kázmér von Thurn und Valsassina † | Bishop of Beograd (-Smederevo), Serbia | Bishop of Pécs, Hungary |
| 2 May | 61.1 | Died | Faustino Giuseppe Griffoni † | Bishop of Crema, Italy |
| 57.2 | Died | Tommaso Marino, O.P. † | Bishop of Siracusa, Italy |
| Born | Sigismund Anton von Hohenwart, S.J. † | Gerlachstein (Krain) | Archbishop of Wien {Vienna}, Austria |
| 8 May | | Born | Pierre-Augustin Godard de Belboeuf † | Rouen | Bishop Emeritus of Avranches, France |
| Born | Francisco Isidoro Gutiérrez Vigil † | Huertahernando | Bishop of Astorga, Spain |
| 15 May | 66.5 | Died | Lorenzo Armengual del Pino de la Mota † | Bishop of Cádiz, Spain |
| 16 May | 19.5 | Professed | Cornelio di San Giuseppe (Giuseppe) Reina, O.C.D. † | Member of Order of Discalced Carmelites | Bishop of Ispahan, Iran |
| 21 May | 52.4 | Ordained Bishop | Amador Merino y Malaguillas † | Bishop of Badajoz, Spain |
| 23 May | 57.8 | Died | Félix Bernuy Zapata y Mendoza † | Bishop of Islas Canarias {Canary Islands}, Spain |
| 29 May | | Born | Pál László Esterházy † | Felsopaty | Bishop of Pécs, Hungary |
| 3 Jun | 21.5 | Ordained Priest | Giuseppe Luigi Avogadro, C.R.L. † | Priest of Canons Regular of the Congregation of the Most Holy Saviour of the Lateran | Bishop of Casale Monferrato, Italy |
| 25.9 | Ordained Priest | Ignazio della Chiesa † | Priest | Bishop of Casale Monferrato, Italy |
| 11 Jun | 61.3 | Ordained Bishop | Francisco de Santiago y Calderón, O. de M. † | Bishop of Antequera, Oaxaca, México |
| 13 Jun | 26.4 | Ordained Priest | Lourenço (Franciscus) de Santa Maria (de Mello), O.F.M. † | Priest of Order of Friars Minor | Bishop of Faro {Algarve}, Portugal |
| 18 Jun | | Born | Franciscus Maria Collet † | Brest | Titular Bishop of Adrasus |
| 19 Jun | | Born | Johann Nepomuk Augustin von Hornstein zu Hohenstoffen † | Weiterdingen | Auxiliary Bishop Emeritus of Konstanz {Constance}, Germany |
| 44.3 | Selected | Dominikus Anton von Thun † | Bishop of Trento, Italy |
| 25 Jun | | Born | Franciscus von Berchtold † | Tyrnaviae | Bishop of Banská Bystrica, Slovakia |