| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 65.0 | Ordained Bishop | Diego Aduarte, O.P. † | Bishop of Nueva Segovia, Philippines |
| Died | Eleuterio Albergone, O.F.M. Conv. † | Bishop of Montemarano, Italy |
| Died | Iñigo de Avalos † | Bishop of Ischia, Italy |
| 29.8 | Ordained Priest | Filiberto Alberto Bailly, B. † | Priest of Clerics Regular of St. Paul | Bishop of Aosta, Italy |
| 65.0 | Resigned | Aimeric de Bragelone † | Bishop of Luçon, France | Bishop Emeritus |
| 33.0 | Ordained Priest | Maciej Bystrom (Bystram) † | Priest | Auxiliary Bishop of Chelmno (Culma, Kulm), Poland |
| Born | Francisco Antonio Caballero † | | Bishop of Segovia, Spain |
| Born | Federico Caccia † | Milan | Cardinal, Archbishop of Milano {Milan}, Italy |
| Born | Leonardus a Camaiore, O.F.M. † | Camaiore | Titular Bishop of Paphus |
| Born | Francesco Antonio Carafa, C.R. † | Napoli | Bishop of Catania, Italy |
| Ordained Bishop | Krzysztof Charbicki † | Titular Bishop of Margarita | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| Died | Giovan Battista Curiale (Correale) † | Bishop of Nicastro, Italy |
| Born | Francesco Antonio Curzio † | Napoli | Bishop of Bovino, Italy |
| 57.3 | Appointed | Rodrigo da Cunha † | Archbishop of Lisboa {Lisbon}, Portugal |
| Born | Tommaso d’Aquino, C.R. † | Somma | Bishop of Sessa Aurunca, Italy |
| Born | Manuel de Herrera, O.F.M. † | Salamantin, Spain | Bishop of Durango, México |
| 23.0 | Ordained Priest | Gregório dos Anjos, C.S.J. † | Priest | Bishop of São Luís do Maranhão, Brazil |
| 52.7 | Died | Urbano Feliceo † | Bishop of Policastro, Italy |
| Born | Francesco Maria Giannotti † | Roma | Bishop of Segni, Italy |
| Born | Juan González Santiago † | Salamanca, Spain | Bishop of Cuzco, Peru |
| Born | Antonio Ibáñez de la Riva Herrera † | Solares | Archbishop of Zaragoza, Spain |
| 50.0 | Appointed | Cornelius Janssen † | Bishop of Ypres (Ieper), Belgium |
| Born | Francisco Joaniz de Echalaz † | Muruzabal | Bishop of Cartagena (en España) |
| Born | Eustache Le Séneschal de Carcado † | Veneten | Bishop of Tréguier, France |
| Died | Petrus Massarecchius † | Archbishop of Bar (Antivari), Montenegro |
| 63.0 | Died | Antonio de Mattei (Mattheis) † | Bishop of Castellaneta, Italy |
| Born | Sebastiano Milazzi (Milati), O.S.B. † | Vigilien | Bishop of Lavello, Italy |
| Born | Jose Millan de Poblete † | México | Bishop-Elect of Nueva Segovia, Philippines |
| Born | Josephus Mosti † | Ferrarien | Titular Bishop of Nazianzus |
| Appointed | Melchiorre Pirella † | Bishop of Ales e Terralba, Italy |
| Born | Miguel Pontich, O.F.M. † | Bulac | Bishop of Gerona, Spain |
| Born | Juan Queipo de Llano y Valdés † | Oveten, Spain | Archbishop of La Plata o Charcas, Bolivia |
| 19.1 | Ordained Priest | Pedro Roche Noguera, O.F.M. † | Priest of Order of Friars Minor | Bishop of Pamplona, Spain |
| Born | Francisco Rodriguez Pizano † | Conchen | Titular Bishop of Raulia |
| Born | Antonio de Sangro, C.R. † | Napoli | Bishop of Troia, Italy |
| Born | Gabriel de Saint-Estève † | Navarre | Bishop of (Saint-Lizier de) Couserans, France |
| Died | João de Valadares, O.S.A. † | Bishop of Porto, Portugal |
| Appointed | Jakub Zadzik † | Bishop of Kraków, Poland |
| Resigned | Gerolamo Maria Zambeccari, O.P. † | Bishop of Minervino Murge, Italy | Bishop Emeritus |
| Jan | | Born | Agostino Arellano, O.S.A. † | Tudela de Navarra | Archbishop of Brindisi, Italy |
| Born | Giovanni d’Aviani † | Chien | Bishop of Santorini {Thira}, Greece |
| 54.0 | Died | Girolamo de Franchis † | Archbishop of Capua, Italy |
| 34.0 | Died | Stefano Siri † | Bishop of Sagone (Sagona), France |
| 6 Jan | | Died | Giuliano de’ Medici † | Archbishop of Pisa, Italy |
| 7 Jan | 47.0 | Ordained Bishop | Wolther Heinrich von Strevesdorff † | Titular Bishop of Ascalon | Auxiliary Bishop of Mainz, Germany |
| 8 Jan | 52.0 | Confirmed | Tommaso d’Ancora (Ariconi), C.R. † | Archbishop of Trani, Italy |
| 67.5 | Appointed | Pedro Apaolaza Ramírez, O.S.B. † | Archbishop of Zaragoza, Spain |
| 35.9 | Appointed | Fabio Chigi † | Bishop of Nardò, Italy | Pope (Roma {Rome}, Italy) |
| 61.0 | Appointed | Cristóbal de Torres, O.P. † | Archbishop of Santafé en Nueva Granada, Colombia |
| Born | Luis Manuel Fernández de Portocarrero-Bocanegra y Moscoso-Osorio † | Palma del Río | Cardinal, Archbishop of Toledo, Spain |
| 9 Jan | | Died | Cesare Bartorelli † | Bishop of Forli, Italy |
| 11 Jan | 60.6 | Selected | Juan Alonso de Solis y Mendoza, O. Carm. † | Bishop of Puerto Rico (Porto Rico) |
| 19 Jan | | Died | Jodok Wagenhauer † | Auxiliary Bishop of Würzburg, Germany |
| 21 Jan | | Born | Francesco Antonio Leopardi † | Bonihabitaculi | Bishop of Tricarico, Italy |
| 29 Jan | 59.1 | Appointed | Carlo Bovi † | Bishop of Sarsina, Italy |
| 30 Jan | 38.4 | Selected | Antonio Marenzi † | Bishop of Pedena, Austria | Bishop of Trieste, Italy |
| Feb | | Died | Domenico de’ Marini † | Archbishop of Genova, Italy |
| 5 Feb | | Died | Niceforo Melisseno Comneno † | Bishop of Crotone (Cotrone), Italy |
| 12 Feb | | Appointed | Miguel Juan Balaguer Camarasa, O.S.Io.Hieros. † | Bishop of Malta |
| 42.8 | Resigned | Francesco Maria Brancaccio † | Bishop of Capaccio, Italy | Cardinal, Bishop of Porto e Santa Rufina, Italy |
| 43.1 | Confirmed | Christophorus de France † | Bishop of Saint-Omer, France |
| 61.1 | Appointed | Nicolaus de Georgiis (Zorzi) † | Bishop of Hvar (Lesina), Croatia |
| 57.8 | Appointed | Gaspard Dubois (Van Den Bosch, Nemius) † | Bishop of Antwerpen {Antwerp, Anvers}, Belgium | Archbishop of Cambrai, France |
| 39.4 | Appointed | Luigi Pappacoda † | Bishop of Capaccio, Italy | Bishop of Lecce, Italy |
| 51.1 | Appointed | Domenico Ravenna † | Bishop of Nicastro, Italy |
| 18 Feb | | Ordained Bishop | Miguel Juan Balaguer Camarasa, O.S.Io.Hieros. † | Bishop of Malta |
| 39.4 | Ordained Bishop | Luigi Pappacoda † | Bishop of Capaccio, Italy | Bishop of Lecce, Italy |
| 51.1 | Ordained Bishop | Domenico Ravenna † | Bishop of Nicastro, Italy |
| Mar | | Succeeded | Jean d’Estress † | Bishop of Lectoure, France |
| Born | Alberto Mugiasca, O.P. † | Comen | Bishop of Alessandria (della Paglia), Italy |
| Died | Léger de Plas, O.S.B. † | Bishop of Lectoure, France |
| 3 Mar | 23.3 | Ordained Priest | Franz Johann von Vogt von Altensumerau und Prasberg † | Priest of Konstanz {Constance}, Germany | Bishop |
| 4 Mar | 61.2 | Ordained Bishop | Nicolaus de Georgiis (Zorzi) † | Bishop of Hvar (Lesina), Croatia |
| 5 Mar | 40.7 | Appointed | Stefano Durazzo † | Archbishop of Genova, Italy | Cardinal, Archbishop Emeritus |
| 25 Mar | | Installed | Miguel Juan Balaguer Camarasa, O.S.Io.Hieros. † | Bishop of Malta |
| Professed | Giambattista Dadece (de Dece), C.R. † | Member of Congregation of Clerics Regular | Bishop of Brugnato, Italy |
| Born | Giovanni Francesco de Lorenzi † | Ripan | Bishop of Venosa, Italy |
| 27 Mar | 79.7 | Died | Pedro Ginés Casanova † | Bishop of Segorbe, Spain |
| 1 Apr | | Died | Fabrizio Sirleto † | Bishop of Squillace, Italy |
| 7 Apr | 24.1 | Ordained Priest | Francisco de Rois y Mendoza, O. Cist. † | Priest of Order of Cistercians | Archbishop of Granada, Spain |
| 16 Apr | 57.3 | Appointed | Giovanni Francesco Guidi di Bagno † | Bishop of Rieti, Italy | Cardinal, Bishop Emeritus |
| 22 Apr | 54.3 | Died | Roberto Ubaldini † | Cardinal, Bishop Emeritus of Montepulciano, Italy |
| 27 Apr | 84.6 | Died | Antonio Zapata y Cisneros † | Cardinal, Archbishop Emeritus of Burgos, Spain |
| May | | Born | Alessandro Avio † | Camerinen | Bishop of San Severino (Marche), Italy |
| Born | Ludovico Masdoni † | Finale | Bishop of Modena, Italy |
| 6 May | | Ordained Bishop | Gaspar Gil y Miravete de Blancas † | Bishop of Vic, Spain |
| 7 May | 57.6 | Appointed | Guido Bentivoglio d’Aragona † | Cardinal-Priest of Santa Prassede | Cardinal, Cardinal-Bishop of Palestrina |
| 65.3 | Appointed | Cristóbal de la Cámara y Murga † | Bishop of Salamanca, Spain |
| Confirmed | Gaetano Cossa, C.R. † | Archbishop of Otranto, Italy |
| Appointed | Ascenzio Guerrieri † | Bishop of Castellaneta, Italy |
| Appointed | Francesco Antonio Porpora † | Bishop of Montemarano, Italy |
| Appointed | Antonio Maria Pranzoni (Franzoni) † | Bishop of Minervino Murge, Italy |
| 41.2 | Appointed | Giacomo Theodoli (Teodolo) † | Archbishop (Personal Title) of Forli, Italy | Bishop Emeritus |
| 13 May | | Ordained Bishop | Gaetano Cossa, C.R. † | Archbishop of Otranto, Italy |
| Ordained Bishop | Ascenzio Guerrieri † | Bishop of Castellaneta, Italy |
| Ordained Bishop | Francesco Antonio Porpora † | Bishop of Montemarano, Italy |
| 17 May | 72.4 | Died | Diego Vela Becerril † | Bishop of Tui, Spain |
| 22 May | 30.4 | Appointed | Mikołaj Torosowicz † | Archbishop of Lviv (Armenian), Ukraine |
| 28 May | | Ordained Bishop | Antonio Maria Pranzoni (Franzoni) † | Bishop of Minervino Murge, Italy |
| Jun | | Born | Emanuele della Torre, O. Merc. † | Alcala de Henares | Archbishop of Lanciano, Italy |
| 4 Jun | 53.4 | Installed | Alphonse-Louis du Plessis de Richelieu, O. Cart. † | Cardinal-Priest of Santissima Trinità al Monte Pincio | Cardinal, Archbishop of Lyon, France |
| 6 Jun | 29.8 | Ordained Priest | Marquard von Schenk von Castell † | Priest of Eichstätt, Germany | Bishop |
| 8 Jun | 57.4 | Died | Jean-François de Sales † | Bishop of Genève {Geneva}, Switzerland |
| 27 Jun | 47.5 | Installed | Melchor Maldonado y Saavedra, O.S.A. † | Bishop of Córdoba (Tucumán), Argentina |