| Date | Age | Event | Bishop | Title | Current Title | 
|---|
| unknown |  | Born | Ippolito Andreassi, O.S.B. † |  | Bishop of Terni, Italy | 
|  | Born | Fabrizio Antinori † |  | Bishop of Siracusa, Italy | 
|  | Died | Alessandro Avogadro † | Coadjutor Bishop of Novigrad (Cittanova), Croatia |  | 
|  | Died | Andrzej Blinowski † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland | 
| 32.3 | Appointed | Filippo Boncompagni † | Archpriest of the Basilica di Santa Maria Maggiore {Saint Mary Major Basilica} | Cardinal, Cardinal-Priest of San Sisto | 
|  | Died | Orazio Caracciolo † | Bishop of Venafro, Italy | 
|  | Born | Pompeo Coronini † |  | Bishop of Trieste, Italy | 
|  | Born | Jacques d’Angennes † |  | Bishop of Bayeux, France | 
|  | Born | Girolamo de Franchis † |  | Archbishop of Capua, Italy | 
| 51.0 | Resigned | Beatus di Porta † | Bishop of Chur, Switzerland | Bishop Emeritus | 
|  | Died | Simăo de Sá Pereira † | Bishop of Porto, Portugal | 
|  | Appointed | Antonio Fera, O.F.M. Conv. † | Minister General of Order of Friars Minor Conventual | Bishop of Marsico Nuovo, Italy | 
|  | Died | Leandro Garuffi Rotelli de Piis † | Bishop of Sarsina, Italy | 
| 35.1 | Ordained Priest | Johann Otto von Gemmingen † | Priest of Augsburg, Germany | Bishop | 
|  | Died | Lelio Giordano † | Archbishop of Rossano, Italy | 
|  | Born | Giovanni Francesco Gozzadini † |  | Bishop of Rethymo (Calamona), Greece | 
|  | Born | Achille de Harlay de Sancy † |  | Bishop Emeritus of Saint-Malo, France | 
| 21.0 | Ordained Bishop | Christophe de L’Estang † | Bishop of Lodčve, France | Bishop of Carcassonne, France | 
|  | Born | Raymond de La Marthonie † |  | Bishop of Limoges, France | 
| 78.0 | Resigned | Umberto Locati, O.P. † | Bishop of Bagnoregio (Bagnorea), Italy | Bishop Emeritus | 
|  | Born | Angelo Mascardi † |  | Bishop of Noli, Italy | 
|  | Born | Gian Gaspare Melis † |  | Bishop of Anagni, Italy | 
| 68.0 | Died | Alfonso Merchante de Valeria † | Auxiliary Bishop of Burgos, Spain | 
|  | Born | Jerónimo Manrique de Lara y de Herrera, O. de M. † |  | Bishop of Santiago de Cuba | 
| 43.0 | Installed | St. Toribio Alfonso de Mogrovejo † | Archbishop of Lima, Peru | 
|  | Died | Giulio Monaco † | Bishop of Lucera, Italy | 
| 52.0 | Ordained Bishop | Gregorio de Montalvo Olivera, O.P. † | Bishop of Yucatán (Mérida), México | Bishop of Cuzco, Peru | 
|  | Born | Richard O’Connell † |  | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland | 
|  | Died | Donat O’Gallagher, O.F.M. Obs. † | Bishop of Down and Connor, Ireland | 
|  | Born | Juan Ortiz de Zárate † |  | Bishop of Salamanca, Spain | 
|  | Born | Bernardino Panicola † |  | Bishop of Ravello e Scala, Italy | 
|  | Born | Bernardino Piccoli † |  | Bishop of Strongoli, Italy | 
|  | Born | Marco Antonio (Sebastianus) Quirino, O.S.C. † |  | Archbishop Emeritus of Naxos, Greece | 
|  | Resigned | Julián Ramirez, O.S. † | Bishop of Guadix, Spain | Bishop Emeritus | 
| 40.0 | Ordained Priest | Miguel Rangel, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Angola e Congo | 
|  | Born | Caesar Reghini † |  | Bishop of Sarsina, Italy | 
|  | Born | Pedro Rosales Encio † |  | Bishop of Lugo, Spain | 
|  | Born | Claude de Rueil † |  | Bishop of Angers, France | 
| 52.0 | Died | François de Salignac de La Mothe-Fénelon † | Bishop Emeritus of Sarlat, France | 
| 69.0 | Installed | Domingo Salazar, O.P. † | Bishop of Manila, Philippines | 
|  | Appointed | Jean (a Grignasco) Saliaschi, O.F.M. Cap. † | Auxiliary Bishop of Poitiers, France | 
|  | Appointed | Jean (a Grignasco) Saliaschi, O.F.M. Cap. † | Titular Bishop of the Titular See | Auxiliary Bishop of Poitiers, France | 
|  | Born | Francesco Saluzzo † |  | Bishop Emeritus of Mottola (Motula), Italy | 
|  | Born | Juan Sánchez Duque de Estrada † |  | Bishop of Guadalajara, Jalisco, México | 
|  | Born | Bernardino Scala † |  | Bishop of Montefeltro, Italy | 
|  | Died | Georges Sgurio † | Bishop of Stefaniaco e Benda, Albania | 
|  | Born | Abraham Jan Jacek Śladkowski, O.P. † |  | Auxiliary Bishop of Chełm, Poland | 
|  | Died | Scipione Salernitano † | Bishop of Acerra, Italy | 
|  | Born | Tommaso Sanfelice, C.R. † |  | Bishop of Montepeloso, Italy | 
|  | Died | Meliaduce Suico † | Bishop of Carinola (Calina), Italy | 
|  | Born | Roberto Ubaldini † |  | Cardinal, Bishop Emeritus of Montepulciano, Italy | 
|  | Born | Girolamo Vidoni † |  | Cardinal, Cardinal-Deacon of Santi Quattro Coronati | 
|  | Born | Benedikt Vinković † |  | Bishop of Zagreb (Agram), Croatia | 
|  | Born | Giuliano Viviani † |  | Bishop of Isola, Italy | 
|  | Died | Franjo Župan, O.F.M. Conv. † | Bishop of Kotor (Cattaro), Montenegro | Bishop Emeritus | 
| Jan |  | Died | Bartolomeo Ferro, O.P. † | Bishop of Terni, Italy | 
|  | Born | Francisco Sánchez Villanueva y Vega † |  | Bishop Emeritus of Islas Canarias {Canary Islands}, Spain | 
| 1 Jan |  | Born | Malatesta Baglioni † |  | Bishop of Assisi, Italy | 
| 13 Jan |  | Appointed | Celso Paci † | Bishop of Castro [del Lazio], Italy | 
| 16 Jan |  | Appointed | Girolamo Petroni † | Bishop of Terni, Italy | 
| 51.0 | Appointed | Georg von Schönenberg † | Bishop of Worms, Germany | 
| 19 Jan |  | Died | Sancho Busto de Villegas † | Bishop of Ávila, Spain | 
| 23 Jan |  | Appointed | Maciej Wielicki, O.P. † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland | 
|  | Appointed | Maciej Wielicki, O.P. † | Titular Bishop of Margarita | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland | 
| 25 Jan |  | Professed | Ambrosio Vallejo Mejía, O. Carm. † | Member of Order of Our Lady of Mt. Carmel | Bishop of Trujillo, Peru | 
| 30 Jan | 26.1 | Selected | Ernst von Bayern † | Bishop of Ličge, Belgium | Archbishop-Elect of Köln {Cologne}, Germany | 
| 2 Feb | 36.0 | Ordained Bishop | Peter Binsfeld † | Titular Bishop of Azotus | Auxiliary Bishop of Trier, Germany | 
| 13 Feb | 43.7 | Appointed | Cesare Camillo Ferrero † | Bishop of Ivrea, Italy | 
|  | Appointed | Domenico Grimaldi † | Bishop of Savona, Italy | Archbishop of Avignon, France | 
| 49.1 | Appointed | Jean Six † | Bishop of Saint-Omer, France | 
| 17 Feb |  | Born | Faustus Poli † |  | Cardinal, Bishop of Orvieto, Italy | 
| 20 Feb |  | Appointed | Pietro Cedolini † | Bishop of Hvar (Lesina), Croatia | 
| 49.1 | Appointed | Martino de Martini, S.J. † | Bishop of San Severo, Italy | 
|  | Appointed | Giovanni Francesco Orefice † | Bishop of Acerno, Italy | Bishop Emeritus | 
| 24 Feb |  | Died | Giovanni Taparelli, O.P. † | Bishop of Saluzzo, Italy | 
| 26 Feb | 65.1 | Died | Stanisław Falęcki, O. Cist. † | Auxiliary Bishop of Gniezno, Poland | 
| 6 Mar | 65.1 | Appointed | Francisco Antonio Orantes Vélez, O.F.M. Obs. † | Bishop of Oviedo, Spain | 
| 15 Mar | 38.0 | Confirmed | Martin von Eyb † | Bishop of Bamberg, Germany | Former Bishop-Elect | 
| 20 Mar |  | Born | Anton Crosini von Bonporto † |  | Bishop of Brixen {Bressanone}, Italy | 
| 74.5 | Died | Salvatore Pacini † | Bishop of Chiusi, Italy | 
| 24 Mar |  | Professed | Tomé de Faría, O. Carm. † | Member of Order of Our Lady of Mt. Carmel | Auxiliary Bishop of Lisboa, Portugal | 
| 1 Apr | 63.3 | Appointed | Giovanni Battista Castelli † | Apostolic Nuncio to France | Bishop of Rimini, Italy | 
| 3 Apr | 26.2 | Confirmed | Ernst von Bayern † | Bishop of Ličge, Belgium | Archbishop-Elect of Köln {Cologne}, Germany | 
|  | Appointed | Angelo Peruzzi † | Bishop of Sarsina, Italy | 
| 5 Apr | 79.2 | Died | Jakub Uchański † | Archbishop of Gniezno, Poland | 
| 9 Apr | 59.2 | Ordained Bishop | Girolamo Diedo † | Bishop of Crema, Italy | Bishop Emeritus | 
| 12 Apr | 42.7 | Appointed | Alberto Bolognetti † | Apostolic Nuncio to Poland | Cardinal, Bishop of Massa Marittima, Italy | 
| 54.2 | Resigned | Giovanni Andrea Caligari † | Apostolic Nuncio to Poland | Bishop of Bertinoro, Italy | 
| 17 Apr | 44.2 | Appointed | Jean Louis Pallavicino Ceva † | Bishop of Saluzzo, Italy | Bishop of Nice, France | 
| 26 Apr | 69.3 | Died | Francisco Blanco Salcedo † | Archbishop of Santiago de Compostela, Spain | 
| 28 Apr | 43.3 | Appointed | Martin Medek z Mohelnice, O. Cruc. † | Archbishop of Praha {Prague}, Czechia | 
| 30 Apr | 43.6 | Resigned | Filippo Sega † | Apostolic Nuncio to Spain | Cardinal, Bishop of Piacenza, Italy | 
| May | 37.4 | Appointed | Alessandro Riario † | Prefect of the Apostolic Signatura | Cardinal, Titular Patriarch of Alexandria {Alessandria} | 
| 6 May | 34.0 | Appointed | Lorenzo Campeggi † | Apostolic Nuncio to Venice, Italy | Bishop of Cervia, Italy | 
| 10 May | 36.3 | Appointed | Johann Ertlin † | Auxiliary Bishop of Bamberg, Germany | 
| 36.3 | Appointed | Johann Ertlin † | Titular Bishop of Athyra | Auxiliary Bishop of Bamberg, Germany | 
| 38.3 | Appointed | Ludovico Maiorano, C.R.L. † | Bishop of Castellammare di Stabia, Italy | 
| 30.6 | Appointed | Bartholomäus Scholl † | Auxiliary Bishop of Freising, Germany | 
| 30.6 | Appointed | Bartholomäus Scholl † | Titular Bishop of Dariensis | Auxiliary Bishop of Freising, Germany | 
| 15 May | 65.3 | Ordained Bishop | Francisco Antonio Orantes Vélez, O.F.M. Obs. † | Bishop of Oviedo, Spain | 
| 16 May | 49.3 | Died | Flavio Orsini † | Cardinal, Bishop of Spoleto, Italy | 
|  | Succeeded | Pietro Orsini † | Bishop of Spoleto, Italy | Bishop of Aversa, Italy | 
| 47.3 | Died | Alessandro Sforza † | Cardinal, Bishop Emeritus of Parma, Italy | 
| 17 May |  | Died | Henrique de Távora e Brito, O.P. † | Archbishop of Goa, India | 
| 19 May | 59.3 | Installed | Girolamo Diedo † | Bishop of Crema, Italy | Bishop Emeritus | 
| 29 May |  | Appointed | Masseo Bardi, O.F.M. Obs. † | Bishop of Chiusi, Italy | 
|  | Appointed | Tommaso Sperandio Corbelli † | Bishop of Bagnoregio (Bagnorea), Italy | 
| 4 Jun | 71.4 | Died | Jakob von Eltz † | Archbishop of Trier, Germany | 
| 5 Jun | 59.4 | Appointed | Afonso de Castelo-Branco † | Bishop of Faro {Algarve}, Portugal | Bishop of Coimbra, Portugal | 
| 68.5 | Died | Martín de Córdoba Mendoza, O.P. † | Bishop of Córdoba, Spain | 
| 21.4 | Installed | Christophe de L’Estang † | Bishop of Lodčve, France | Bishop of Carcassonne, France | 
| 11 Jun | 63.4 | Died | Luis Tello Maldonado † | Bishop of Segovia, Spain | 
| 15 Jun |  | Resigned | Orazio Malaspina † | Apostolic Nuncio to Emperor | Bishop-Elect of Albenga, Italy | 
| 39.4 | Appointed | Ottavio Santacroce † | Apostolic Nuncio to Emperor | Bishop of Cervia, Italy | 
| 16 Jun |  | Appointed | Anton Manicordius † | Auxiliary Bishop of Gurk, Austria | 
|  | Appointed | Anton Manicordius † | Titular Bishop of Germanicia | Auxiliary Bishop of Gurk, Austria | 
| 19 Jun |  | Appointed | Valentin Douglas, O.S.B. † | Bishop of Laon, France |