| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Carlo Francesco Airoldi † | Mediolanen | Titular Archbishop of Edessa in Osrhoëne |
| 20.0 | Professed | Théodore-Germain Allart, O.F.M. † | Member of Order of Friars Minor | Bishop of Vence, France |
| Born | Diego de Baños y Sotomayor † | Lima, Peru | Bishop of Caracas, Santiago de Venezuela |
| Born | Gines (Ginesio) Barrientos, O.P. † | Barrueco Pardo Villa de Sayao | Auxiliary Bishop of Manila, Philippines |
| 36.0 | Died | Paolo Benzoni, C.R.L. † | Bishop of Sora, Italy |
| Died | Ippolito Borghese, O.S.B. † | Bishop of Pienza, Italy |
| 15.0 | Professed | Lourenço de Castro, O.P. † | Member of Order of Friars Preachers | Bishop of Miranda (do Douro), Portugal |
| Born | Nilo Catalani, O.S.B.M. † | Castania | Archbishop of Durrës (Durazzo) (Albanian), Albania |
| 48.0 | Died | Francesco Cavaliere † | Bishop of Valva, Italy |
| Died | Leonel de Cervantes y Caravajal † | Bishop of Antequera, Oaxaca, México |
| Born | Francesco Crispo † | Naxien | Bishop of Santorini {Thira}, Greece |
| Born | Domenico Cugia † | Cagliari | Bishop of Ales e Terralba, Italy |
| Died | Zanobi de’ Medici, O.P. † | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| Died | Barthélemy de Donnadieu de Griet † | Bishop of (Saint-Bernard de) Comminges, France |
| Died | Charles-Salomon du Serre † | Bishop of Gap, France |
| 49.0 | Died | Onorio de Verme † | Bishop of Ravello e Scala, Italy |
| Born | Giovanni Battista Giberti † | Camerino | Bishop of Fano, Italy |
| 31.4 | Ordained Priest | Wacław Leszczyński † | Priest of Poznań, Poland | Archbishop of Gniezno, Poland |
| Appointed | György Lippay Zombori † | Bishop of Eger, Hungary | Archbishop of Esztergom, Hungary |
| Born | Charles-François de Loménie de Brienne † | Paris | Bishop of Coutances, France |
| 27.2 | Ordained Priest | Francisco de Loyola y Vergara, O.S.A. † | Priest of Order of St. Augustine | Bishop of Concepción, Chile |
| Born | Pietro Luigi Malaspina, C.R. † | Florentin | Bishop of Massa Marittima, Italy |
| Born | Jerónimo Mascareñas † | Ulixbonen | Bishop of Segovia, Spain |
| Resigned | Lourenço de Mendonça † | Prelate of São Sebastião do Rio de Janeiro, Brazil | Prelate Emeritus |
| Born | Tiberio Muscettola, C.O. † | Napoli | Archbishop Emeritus of Manfredonia, Italy |
| Appointed | Pierre Nivelle † | Bishop of Luçon, France |
| Ordained Bishop | Pierre Nivelle † | Bishop of Luçon, France |
| Born | Louis-Marie Pidou de Saint-Olon, C.R. † | Paris | Bishop of Baghdad, Iraq |
| Died | Melchiorre Pirella † | Bishop of Ales e Terralba, Italy |
| Born | Antonius de San Jurjo, O.P. † | San Tirso de Abres | Bishop of Astorga, Spain |
| Born | Andrea Arcadio Stanila † | | Titular Bishop |
| 43.0 | Ordained Bishop | Zacharias Stumpf † | Titular Bishop of Domitiopolis | Auxiliary Bishop of Würzburg, Germany |
| 65.0 | Died | Girolamo Tantucci † | Bishop of Grosseto, Italy |
| Born | Édouard Valot † | | Bishop Emeritus of Nevers, France |
| Selected | Benedikt Vinković † | Bishop of Zagreb (Agram), Croatia |
| Jan | | Died | Alessandro Deti (Deto) † | Bishop of Anglona-Tursi, Italy |
| 1 Jan | | Ordained Bishop | Filippo Cansacchi (Consacchi) † | Bishop of Gravina (di Puglia), Italy |
| 67.0 | Died | Diego Merino, O. Carm. † | Bishop of Isernia, Italy |
| 3 Jan | | Appointed | Dominique Séguier † | Bishop of Meaux, France |
| 4 Jan | 51.0 | Ordained Bishop | Blas Tineo Palacios, O. de M. † | Titular Bishop of Thermopylae | Auxiliary Bishop of Granada, Spain |
| 8 Jan | | Born | Francesco Giusti † | Fulginaten | Bishop of Camerino, Italy |
| 12 Jan | 59.0 | Appointed | Girolamo Binago, C.O. † | Auxiliary Bishop of Bologna, Italy |
| 59.0 | Appointed | Girolamo Binago, C.O. † | Titular Bishop of Laodicea in Phrygia | Auxiliary Bishop of Bologna, Italy |
| 51.0 | Appointed | Gaudius Castelli † | Bishop of Montepeloso, Italy |
| Appointed | Girolamo Lanfranchi † | Bishop of Cava (de’ Tirreni), Italy |
| 56.0 | Appointed | Bernardino Scala † | Bishop of Bisceglie, Italy | Bishop of Montefeltro, Italy |
| 18 Jan | 51.0 | Ordained Bishop | Gaudius Castelli † | Bishop of Montepeloso, Italy |
| Born | Manuel Fernández de Santa Cruz y Sahagún † | Palencia | Bishop of Tlaxcala, México |
| 25 Jan | | Ordained Bishop | Girolamo Lanfranchi † | Bishop of Cava (de’ Tirreni), Italy |
| 56.1 | Ordained Bishop | Bernardino Scala † | Bishop of Bisceglie, Italy | Bishop of Montefeltro, Italy |
| 58.0 | Ordained Bishop | Antonio Tornielli † | Bishop of Novara, Italy |
| Feb | 53.1 | Died | Costantino Testi, O.P. † | Bishop of Satriano e Campagna, Italy |
| 3 Feb | | Born | Varlaam Sheptyskyi † | Voshchatychi | Bishop of Lviv (Ukrainian), Ukraine |
| 5 Feb | | Succeeded | Rafail Korsak † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine | Coadjutor Archbishop |
| Died | Josyf Veliamyn Rutski † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 9 Feb | 61.7 | Appointed | Lelio Biscia † | Cardinal, Cardinal-Priest of Santa Maria del Popolo |
| 45.1 | Appointed | Alessandro Cesarini (Jr.) † | Cardinal-Deacon of Santa Maria in Cosmedin | Cardinal, Bishop Emeritus of Viterbo e Tuscania, Italy |
| Appointed | Luis García Rodríguez † | Bishop of Astorga, Spain |
| 52.1 | Appointed | Alessandro (Fabrizio) Suardi † | Bishop of Caserta, Italy |
| 22 Feb | | Ordained Bishop | Piotr Gembicki † | Bishop of Przemyśl, Poland | Bishop of Kraków, Poland |
| 24 Feb | 59.1 | Ordained Bishop | Girolamo Binago, C.O. † | Titular Bishop of Laodicea in Phrygia | Auxiliary Bishop of Bologna, Italy |
| Mar | 64.1 | Died | Juan Serrano Ortiz, O.F.M. † | Bishop of Acerno, Italy |
| 2 Mar | 47.2 | Appointed | Scipione Tancredi † | Bishop of Montalcino, Italy |
| 51.2 | Appointed | Ascanio Turamini † | Bishop of Grosseto, Italy |
| 51.0 | Appointed | Juan Velasco Acevedo † | Bishop of Orense, Spain |
| 11 Mar | | Selected | Gabriel de Zarate, O.P. † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 15 Mar | 51.2 | Ordained Bishop | Ascanio Turamini † | Bishop of Grosseto, Italy |
| 16 Mar | 38.2 | Appointed | Pietro Paolo de’ Rustici, O.S.B. † | Bishop of Telese o Cerreto Sannita, Italy | Bishop of Isernia, Italy |
| 80.2 | Died | Alessandro Guidiccioni (Jr.) † | Bishop of Lucca, Italy |
| Appointed | Christophorus Tolomei † | Bishop of Sovana (Soana), Italy |
| Appointed | Jean-Vincent de Tulles † | Coadjutor Bishop of Orange, France | Bishop of Lavaur, France |
| Appointed | Jean-Vincent de Tulles † | Titular Bishop of Dioclea | Bishop of Lavaur, France |
| 19 Mar | 66.5 | Died | Péter Pázmány, S.J. † | Cardinal, Archbishop of Esztergom, Hungary |
| 29 Mar | 38.2 | Ordained Bishop | Pietro Paolo de’ Rustici, O.S.B. † | Bishop of Telese o Cerreto Sannita, Italy | Bishop of Isernia, Italy |
| 30 Mar | | Confirmed | Tommaso Caracciolo, C.R. † | Archbishop of Taranto, Italy |
| 58.2 | Resigned | Gil Carrillo de Albornoz † | Archbishop of Taranto, Italy | Cardinal, Archbishop Emeritus |
| 45.2 | Appointed | Marcantonio Franciotti † | Bishop of Lucca, Italy | Cardinal, Bishop Emeritus |
| 45.2 | Elevated to Cardinal | Marcantonio Franciotti † | Cardinal, Bishop Emeritus of Lucca, Italy |
| 50.2 | Confirmed | Girolamo Martini † | Bishop of Ugento, Italy |
| 2 Apr | | Born | Pietro Leoni † | Venetia | Bishop of Verona, Italy |
| 8 Apr | | Died | Giovanni Battista Colonna † | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 63.3 | Died | António da Ressurreição, O.P. † | Bishop of Angra, Portugal |
| 13 Apr | | Ordained Bishop | Jean-Vincent de Tulles † | Titular Bishop of Dioclea | Bishop of Lavaur, France |
| 17 Apr | 71.3 | Died | François de Rye † | Archbishop of Besançon, France |
| 19 Apr | 45.3 | Ordained Bishop | Marcantonio Franciotti † | Bishop of Lucca, Italy | Cardinal, Bishop Emeritus |
| 20 Apr | 46.3 | Appointed | Alexander Sibilia † | Bishop of Capri, Italy |
| 50.3 | Appointed | Gaspar de Villarroel, O.S.A. † | Bishop of Santiago de Chile | Archbishop of La Plata o Charcas, Bolivia |
| 26 Apr | 50.3 | Ordained Bishop | Girolamo Martini † | Bishop of Ugento, Italy |
| 30 Apr | 40.6 | Ordained Bishop | Franz von Hatzfeld † | Bishop of Würzburg, Germany |
| May | | Died | Sallustio Bartoli † | Bishop of Strongoli, Italy |
| Born | Uldericus Nardi † | Poppi | Bishop of Bagnoregio (Bagnorea), Italy |
| 1 May | 75.0 | Died | Antonio Pérez, O.S.B. † | Archbishop of Tarragona, Spain |
| 46.3 | Ordained Bishop | Alexander Sibilia † | Bishop of Capri, Italy |
| 2 May | | Born | François Deydier, M.E.P. † | Toulon, France | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 24 May | 51.2 | Ordained Bishop | Juan Velasco Acevedo † | Bishop of Orense, Spain |
| 31 May | | Born | Louis Laneau, M.E.P. † | Mondoubleau, France | Vicar Apostolic of Siam, Thailand |
| 12 Jun | | Died | Barthélémy Camelin † | Bishop of Fréjus, France |
| Succeeded | Pierre Camelin † | Bishop of Fréjus, France |