| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 47.2 | Appointed | Alessandro Albani † | Cardinal-Deacon of S. Agata de’ Goti | Cardinal, Archivist of the Vatican Secret Archives |
| Born | José Nicolau de Azevedo Coutinho Gentil † | Lisboa, Portugal | Prelate of Goiás, Brazil |
| 50.0 | Appointed | François de Beaumont d'Autichamp † | Bishop of Tulle, France |
| 40.0 | Appointed | Pierre de Beaupoil de Saint-Aulaire † | Bishop of Tarbes, France |
| 29.8 | Appointed | Joseph-François de Cadenet de Charleval † | Bishop of Agde, France |
| Born | Francesco Maria Cioja † | Rome | Bishop of Todi, Italy |
| Died | Hilario a Jesu Costa, O.A.D. † | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 36.9 | Appointed | Miguel da Anunciação † | Bishop of Coimbra, Portugal |
| Died | Biagio o Blasio De Dura † | Bishop of Potenza, Italy |
| Born | Carmine Fimiani † | Castel S.Giorgio | Bishop of Nardò, Italy |
| 35.0 | Appointed | Bernardin-Louis Foucquet † | Archbishop of Embrun, France | Archbishop Emeritus |
| Born | Maciej Grzegorz Garnysz † | | Bishop of Chelm, Poland |
| 14.6 | Professed | Johann Heinrich von Kerens, S.J. † | Member of Society of Jesus | Bishop of Sankt Pölten, Austria |
| Born | Antoine Etienne Aconcius Kover, O.M. Ven. † | Gzentgyorgy, Armenia | Titular Archbishop of Siunia |
| Appointed | Júlio Francisco de Oliveira † | Bishop of Viseu, Portugal |
| 51.1 | Died | Leandro a Pietate, O.A.D. † | Bishop of São Tomé e Príncipe |
| 59.8 | Appointed | Angelo Maria Quirini (Querini), O.S.B. † | Prefect of the Congregation of the Index | Cardinal, Bishop of Brescia, Italy |
| 69.4 | Died | Bartolomé San Martín Orive † | Bishop of Palencia, Spain |
| Died | Nicolò Tupputi † | Bishop of Nusco, Italy |
| 43.2 | Ordained Bishop | Francisco Zarceño Martínez, O.SS.T. † | Bishop of Solsona, Spain |
| 4 Jan | | Born | Luigi Maria Pirelli † | Ariano | Archbishop of Trani e Bisceglie, Italy |
| 5 Jan | 44.1 | Installed | Andrzej Stanisław Załuski † | Bishop of Chelmno (Culma), Poland | Bishop of Kraków, Poland |
| 10 Jan | 42.9 | Appointed | Charles-Antoine de la Roche-Aymon † | Archbishop of Toulouse, France | Cardinal, Archbishop of Reims, France |
| 11 Jan | 79.2 | Died | Gianantonio Davia † | Cardinal, Bishop Emeritus of Rimini, Italy |
| 12 Jan | 60.0 | Died | Thomas John Francis de Strickland de Sizorghe † | Bishop of Namur {Namen}, Belgium |
| 14 Jan | | Born | Antonio Felice Zondadari † | Siena | Cardinal, Archbishop of Siena, Italy |
| 15 Jan | | Born | Jean-Baptiste-Joseph de Lubersac † | Lubersac | Bishop Emeritus of Chartres, France |
| 22 Jan | 68.4 | Died | Giberto Bartolomeo Borromeo † | Cardinal, Bishop of Novara, Italy |
| Born | Vincenzo Manni † | Fabriano | Bishop of Tivoli, Italy |
| Feb | 28.0 | Ordained Priest | Manuel de Alday y Axpée † | Priest of Santiago de Chile | Bishop |
| 57.0 | Ordained Bishop | Francisco Antonio Bustamante Jiménez † | Bishop of Barbastro, Spain | Bishop of Plasencia, Spain |
| 6 Feb | 87.8 | Died | Lorenzo Corsini † | Pope (Roma {Rome}, Italy) |
| 7 Feb | 39.4 | Ordained Bishop | Jean-Gilles du Coêtlosquet † | Bishop of Limoges, France | Bishop Emeritus |
| 13 Feb | | Appointed | Inácio de Santa Teresa, O.S.A. † | Archbishop (Personal Title) of Faro {Algarve}, Portugal | Bishop |
| 17 Feb | 69.2 | Died | Giuseppe Maria Perrimezzi, O.M. † | Bishop Emeritus of Oppido Mamertina, Italy |
| 20 Feb | 78.1 | Died | Charles-Fontaine Des Montees † | Bishop of Nevers, France |
| 21 Feb | | Born | Jean-Baptiste de Chabot † | Marigny-Brizay | Bishop Emeritus of Mende, France |
| 23 Feb | | Born | J. Damián Martínez de Galinsonga, O.F.M. † | Lorca, Murcia, Spain | Bishop of Tarazona, Spain |
| 25 Feb | 52.6 | Ordained Bishop | Onésimo Salamanca Zaldívar † | Bishop of Zamora, Spain | Archbishop of Burgos, Spain |
| 26 Feb | 69.1 | Died | Charles-François de Châteauneuf de Rochebonne † | Archbishop of Lyon, France |
| 29 Feb | 72.7 | Died | Pietro Ottoboni † | Cardinal, Cardinal-Bishop of Ostia (-Velletri) |
| 12 Mar | 66.6 | Died | Giovanni Battista Altieri (Jr.) † | Cardinal, Cardinal-Bishop of Palestrina |
| 13 Mar | 39.5 | Installed | Jean-Gilles du Coêtlosquet † | Bishop of Limoges, France | Bishop Emeritus |
| 16 Mar | 59.8 | Died | Krzysztof Andrzej Jan Szembek † | Bishop of Warmia, Poland |
| 20 Mar | 54.5 | Ordained Bishop | Jean de Lolière-Puycontat, M.E.P. † | Titular Bishop of Iuliopolis | Vicar Apostolic of Siam, Thailand |
| 3 Apr | 80.3 | Died | Thomas Dominic Williams, O.P. † | Vicar Apostolic of Northern District, England, Great Britain |
| 4 Apr | | Born | François Citadella † | Sagone | Bishop of Acci and Mariana, France |
| 6 Apr | 49.2 | Died | Jacques-Charles-Alexandre Lallemant † | Bishop of Sées, France |
| 13 Apr | | Born | Jacques-Joseph-François de Vogüé † | Aubenas | Bishop of Dijon, France |
| 17 Apr | 46.9 | Ordained Bishop | Pedro Felipe de Azúa e Iturgoyen † | Titular Bishop of Botrys | Archbishop Emeritus of Santafé en Nueva Granada, Colombia |
| 30 Apr | | Born | Charles-Eutrope de La Laurancie † | Villeneuve-la-Comtesse | Bishop of Nantes, France |
| 2 May | | Born | Manuel Ignacio González de Campillo Gómez del Valle † | Veta Grande | Bishop of Tlaxcala, Tlaxcala, México |
| 5 May | 42.3 | Appointed | Louis-François Néel de Christot † | Bishop of Sées, France |
| 15 May | 24.6 | Ordained Deacon | João Cosme da Cunha (de Nossa Senhora da Porta), O.C.S.A. † | Deacon | Cardinal, Archbishop of Évora, Portugal |
| 22 May | 24.6 | Ordained Priest | João Cosme da Cunha (de Nossa Senhora da Porta), O.C.S.A. † | Priest of Lisboa, Portugal | Cardinal, Archbishop of Évora, Portugal |
| 41.7 | Died | Claude-Louis de La Chatre † | Bishop of Agde, France |
| Jun | | Died | Bernard O'Gara † | Archbishop of Tuam, Ireland |
| 1 Jun | | Born | Giovanni Battista Rezzonico † | Venice | Cardinal, Cardinal-Deacon of S. Nicola in Carcere |
| 2 Jun | 66.4 | Died | Leandro di Porzia (Porcia), O.S.B. † | Cardinal, Bishop Emeritus of Bergamo, Italy |
| 10 Jun | | Born | Antonio Palafox Croy de Abre † | Madrid | Bishop of Cuenca, Ecuador |
| 12 Jun | 82.3 | Died | Johann Franz Reichsgraf von Schenk von Stauffenberg † | Bishop of Konstanz {Constance}, Germany |
| 14 Jun | 31.9 | Ordained Priest | Heinrich Joseph von Nitschke † | Priest of Mainz, Germany | Auxiliary Bishop of Bamberg, Germany |
| 20 Jun | | Born | Grzegorz Zachariasiewicz † | Lwów | Auxiliary Bishop of Gniezno, Poland |
| 24 Jun | 64.1 | Died | Serafino Cenci † | Cardinal, Archbishop of Benevento, Italy |
| Born | Pedro José Chávez de la Rosa † | Cádiz, Spain | Bishop Emeritus of Arequipa, Peru |
| 26 Jun | | Born | Jean-François Périer † | Grenoble | Bishop of Avignon, France |