| Date | Age | Event | Bishop | Title | Current Title | 
|---|
| unknown |  | Ordained Bishop | Alexandre de Alexandris, B. † | Titular Bishop of Nabala | Vicar Apostolic of Cochin {Cocincina}, Viet Nam | 
| 71.9 | Died | Antonio da Silva, S.J. † | Former Bishop-Elect of Nanking [Nanjing], China | 
| 27.1 | Ordained Priest | Sándor Fonyó † | Priest | 
| 28.0 | Ordained Priest | Antonio Andrea Galli, C.R.SS.S. † | Priest | Cardinal, Cardinal-Priest of San Pietro in Vincoli | 
|  | Appointed | Philippe al Gemayel † | Bishop | Bishop of Cyprus (Maronite) | 
|  | Born | Pierre-Joseph de Lastic-Lescure † |  | Bishop Emeritus of Rieux, France | 
|  | Born | Josyf Lepkovskyj † |  | Bishop of Smoleńsk (Ukrainian), Russian Federation | 
|  | Born | Mattaeus Massarech † |  | Archbishop of Skopje, North Macedonia | 
| 188.0 | Canonized | St. Toribio Alfonso de Mogrovejo † | Archbishop of Lima, Peru | 
|  | Died | Terence O’Donnelly † | Bishop of Derry, Ireland | 
| 8 Jan |  | Born | Kasper Józef Szajowski † |  | Auxiliary Bishop of Gniezno, Poland | 
| 10 Jan |  | Born | Santiago Palmero Escada † |  | Bishop of Badajoz, Spain | 
| 13 Jan | 66.2 | Ordained Bishop | Francesco Bataller, O. Carm. † | Bishop of Ugento, Italy | 
| 14 Jan |  | Born | William Egan † |  | Bishop of Waterford and Lismore, Ireland | 
| 16 Jan | 34.9 | Appointed | Placido Pezzancheri, O. Cist. † | Titular Bishop of Hemeria (Himeria) | Bishop of Tivoli, Italy | 
|  | Born | José Antonio Sáenz Santamaría † |  | Bishop of Segovia, Spain | 
| 55.6 | Died | José Taberner (Taverner) Dárdena † | Bishop of Gerona, Spain | 
| 19 Jan |  | Born | Ferdinand-Marie de Lobkowitz † |  | Bishop of Gent {Ghent, Gand}, Belgium | 
| 72.1 | Died | Giovanni Battista Tolomei, S.J. † | Cardinal, Cardinal-Priest of Santo Stefano al Monte Celio | 
| 20 Jan | 34.7 | Ordained Deacon | Massenzio (dei Conti) Filo † | Deacon | Bishop of Castellaneta, Italy | 
| 26 Jan | 63.9 | Selected | Antonius Dominikus von Wolkenstein-Trostburg † | Bishop of Trento, Italy | 
| 27 Jan | 34.7 | Ordained Priest | Massenzio (dei Conti) Filo † | Priest | Bishop of Castellaneta, Italy | 
| 28 Jan | 54.5 | Resigned | Gioacchino Maria Oldi, O. Carm. † | Auxiliary Bishop of Ostia (-Velletri), Italy | Bishop of Terracina, Priverno e Sezze, Italy | 
| 3 Feb | 34.9 | Ordained Bishop | Placido Pezzancheri, O. Cist. † | Titular Bishop of Hemeria (Himeria) | Bishop of Tivoli, Italy | 
| 33.3 | Ordained Bishop | Franciscus Aloysius von Lamberg † | Titular Bishop of Nilopolis | Auxiliary Bishop of Passau, Germany | 
| 4 Feb |  | Born | Mariano Zaralli, O.F.M. Obs. † |  | Vicar Apostolic of Hukwang, Shansi [Shanxi], and Shensi [Shaanxi], China | 
| 6 Feb |  | Born | Urbain-René de Hercé † |  | Bishop of Dol, France | 
| 8 Feb |  | Born | Gennaro Antonucci † |  | Bishop of Molfetta, Italy | 
| 9 Feb |  | Born | Jean-Auguste Frétat de Sarra † |  | Bishop of Nantes, France | 
| 18 Feb |  | Born | Francisco Cuadrillero Mota † |  | Bishop of Mondoñedo, Spain | 
| 20 Feb | 50.0 | Appointed | Carlo Francesco Airoldi † | Titular Archbishop of Side | 
| 63.2 | Appointed | Luis Antonio Belluga y Moncada, C.O. † | Cardinal-Priest of Santa Prisca | Cardinal, Bishop Emeritus of Cartagena (en España) | 
| 33.6 | Confirmed | François-Charles de Béringhen d’Armainvilliers † | Bishop of Le Puy-en-Velay, France | 
| 59.1 | Confirmed | Alessandro Burgos, O.F.M. Conv. † | Bishop of Catania, Italy | 
| 41.9 | Appointed | Gregorio Galindo † | Auxiliary Bishop of Zaragoza, Spain | Bishop of Lérida, Spain | 
| 41.9 | Appointed | Gregorio Galindo † | Titular Bishop of Aulon | Bishop of Lérida, Spain | 
| 71.1 | Appointed | Manuel Antonio Gómez de Silva † | Bishop of Cartagena, Colombia | Bishop of Popayán, Colombia | 
| 57.3 | Appointed | Nicolás Carlos Gómez de Cervantes y Velázquez de la Cadena † | Bishop of Guadalajara, Jalisco, México | 
| 37.7 | Confirmed | Alexandre Milon † | Bishop of Valence, France | 
| 64.3 | Confirmed | Melchior de Polignac † | Cardinal, Archbishop of Auch, France | 
| 54.6 | Appointed | Giovanni Battista Salerni, S.J. † | Cardinal, Cardinal-Priest of Santo Stefano al Monte Celio | 
| 71.8 | Appointed | Pietro Zorzi † | Titular Bishop of Chalcis in Syria | 
| 22 Feb | 23.0 | Ordained Priest | Samuel Głowiński † | Priest | Auxiliary Bishop of Lviv, Ukraine | 
| 23 Feb |  | Born | Francesco Brunone Fazzi † |  | Bishop of San Miniato, Italy | 
| 24 Feb | 50.1 | Ordained Bishop | Charles Poniński † | Titular Bishop of Aradus | Auxiliary Bishop of Poznań, Poland | 
|  | Born | Giuseppe Maria Scarampi † |  | Bishop of Vigevano, Italy | 
| Mar | 72.1 | Died | Donagh McCarthy † | Bishop of Cork and Cloyne, Ireland | 
| 1 Mar |  | Born | [Étienne Nogaret] † |  | Bishop Emeritus of [Lozère (Constitutional), France] | 
| 2 Mar | 17.1 | Solemn Vows | Thomas Burke (de Burgo), O.P. † | Member of Order of Friars Preachers | Bishop of Ossory, Ireland | 
| 72.8 | Died | Joseph-Ignace-Jean-Baptiste de Mesgrigny, O.F.M. Cap. † | Bishop of Grasse, France | 
| 3 Mar | 24.0 | Ordained Priest | Giovanni Carmine Pellerano, O.S.Io.Hieros. † | Priest of Sovereign Military Hospitaller Order of St John of Jerusalem | Bishop Emeritus of Malta | 
| 57.1 | Ordained Bishop | José Pinheiro, S.J. † | Bishop of São Tomé of Meliapore, India | 
| 8 Mar |  | Born | Ferdinando de Vicariis, O.S.B. † |  | Bishop of Melfi e Rapolla, Italy | 
| 9 Mar |  | Born | François Pottier, M.E.P. † |  | Vicar Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China | 
| 10 Mar | 59.2 | Ordained Bishop | Alessandro Burgos, O.F.M. Conv. † | Bishop of Catania, Italy | 
|  | Born | Giovanni Ignazio Gautier † |  | Bishop of Iglesias, Italy | 
| 13 Mar |  | Born | Bartolomeo Bacher † |  | Bishop of Ripatransone, Italy | 
| 16 Mar | 22.9 | Ordained Priest | Carlo Mineo † | Priest | Bishop of Patti, Italy | 
| 26.0 | Ordained Priest | Ludwik Ignacy Riaucour † | Priest | Auxiliary Bishop of Lutsk (Łuck), Ukraine | 
| 17 Mar | 50.1 | Ordained Bishop | Carlo Francesco Airoldi † | Titular Archbishop of Side | 
| 19 Mar | 64.4 | Ordained Bishop | Melchior de Polignac † | Cardinal, Archbishop of Auch, France | 
| 20 Mar | 32.9 | Confirmed | Jean de Caulet † | Bishop of Grenoble, France | 
| 67.8 | Appointed | Giovanni Ghirardi † | Coadjutor Bishop of Montemarano, Italy | Bishop | 
| 67.8 | Appointed | Giovanni Ghirardi † | Titular Bishop of Corada | Bishop of Montemarano, Italy | 
| 51.2 | Ordained Bishop | Diego González Toro y Villalobos † | Bishop of Málaga, Spain | Bishop of Cuenca, Spain | 
| 51.6 | Appointed | Christoph Ignaz von Gudenus † | Auxiliary Bishop of Mainz, Germany | 
| 51.6 | Appointed | Christoph Ignaz von Gudenus † | Titular Bishop of Anemurium | Auxiliary Bishop of Mainz, Germany | 
| 65.0 | Appointed | Curzio Origo † | Cardinal, Cardinal-Priest of Sant’Eustachio | 
| 43.8 | Appointed | Giuseppe Isidoro Persico † | Titular Bishop of Hirina | Bishop of Isernia, Italy | 
| 42.2 | Appointed | Giulio Sabbatini, Sch. P. † | Titular Bishop of Apollonia | Bishop of Modena, Italy | 
| 21 Mar | 72.4 | Died | Idelfonso Manara, B. † | Bishop of Bobbio, Italy | 
| 22 Mar | 43.6 | Resigned | Salvatore Miroballo † | Titular Archbishop of Nazareth | Archbishop Emeritus | 
| 24 Mar | 33.7 | Ordained Bishop | François-Charles de Béringhen d’Armainvilliers † | Bishop of Le Puy-en-Velay, France | 
| 67.8 | Ordained Bishop | Giovanni Ghirardi † | Titular Bishop of Corada | Bishop of Montemarano, Italy | 
| 25 Mar | 58.1 | Selected | Claude-Léonce-Octavien d’Antelmy † | Bishop of Grasse, France | 
| 29 Mar | 39.1 | Selected | Jean-François de Macheco de Prémeaux † | Bishop of (Saint-Lizier de) Couserans (or Conserans), France | 
| 30 Mar |  | Born | Roque Martín Merino † |  | Bishop of Teruel, Spain | 
| 31 Mar | 66.1 | Ordained Bishop | Domingo Valentín Guerra Arteaga y Leiba † | Titular Archbishop of Amida | Bishop of Segovia, Spain | 
| 37.8 | Ordained Bishop | Alexandre Milon † | Bishop of Valence, France | 
| Apr | 24.4 | Ordained Priest | Francesco Felice Alberti d’Enno † | Priest of Trento, Italy | Bishop | 
| 44.7 | Ordained Deacon | Giovanni Battista Spínola † | Deacon | Cardinal, Cardinal-Bishop of Albano | 
| 6 Apr | 22.9 | Ordained Priest | Gianbattista Colombini, O.F.M. Conv. † | Priest of Order of Friars Minor Conventual | Archbishop of Benevento, Italy | 
| 23.0 | Ordained Priest | Honuphrius del Tufo † | Priest | Bishop of Guardialfiera (Guardia), Italy | 
| 25.6 | Ordained Priest | Giuseppe Maria Fogliani † | Priest | Bishop of Modena, Italy | 
| 8 Apr | 46.2 | Confirmed | Adam Acsády † | Bishop of Veszprém, Hungary | 
| 38.9 | Confirmed | Jean-Mathias de Barthélemy de Gramont de Lanta † | Bishop of Perpignan-Elne, France | 
| 50.5 | Appointed | Giovanni Crisostomo Bianchi, O.E.S.A. † | Titular Archbishop of Nazareth | Titular Archbishop-Elect | 
| 51.8 | Appointed | Francisco Mendigaño Armendáriz † | Archbishop of Santo Domingo, Dominican Republic | 
| 35.0 | Appointed | Giuseppe Saporiti † | Titular Archbishop of Anazarbus | Archbishop of Genova, Italy | 
| 64.1 | Confirmed | Antonius Dominikus von Wolkenstein-Trostburg † | Bishop of Trento, Italy | 
| 12 Apr | 22.6 | Confirmed | Johann Theodor von Bayern † | Coadjutor Bishop of Freising, Germany | Cardinal, Bishop of Regensburg, Germany | 
| 14 Apr |  | Born | Giambattista Ettore Caracciolo, C.R. † |  | Archbishop of Bari (-Canosa), Italy | 
| 33.0 | Ordained Bishop | Jean de Caulet † | Bishop of Grenoble, France | 
| 15 Apr | 50.5 | Died | Giovanni Crisostomo Bianchi, O.E.S.A. † | Titular Archbishop-Elect of Nazareth | 
| 20 Apr | 25.2 | Ordained Priest | Stefano di Leoni † | Priest | Bishop of Novigrad (Cittanova), Croatia | 
| 24.7 | Ordained Priest | Dario de Longhis † | Priest | Bishop Emeritus of Syros (e Milos), Greece | 
| 22 Apr |  | Born | Bonifacio da Ponte, O.S.B. † |  | Bishop of Capodistria (Capo d’Istria)(Koper), Slovenia | 
| 43.9 | Ordained Bishop | Giuseppe Isidoro Persico † | Titular Bishop of Hirina | Bishop of Isernia, Italy | 
| 35.1 | Ordained Bishop | Giuseppe Saporiti † | Titular Archbishop of Anazarbus | Archbishop of Genova, Italy | 
| 23 Apr | 42.4 | Ordained Deacon | Anselm Franz von Ingelheim † | Deacon of Würzburg, Germany | Bishop | 
| 63.1 | Died | Giulio Piazza † | Bishop of Faenza, Italy | Cardinal, Archbishop (Personal Title) | 
| 24 Apr |  | Born | Angelo Maria Zuccari † |  | Bishop of Capaccio, Italy | 
| 25 Apr | 76.3 | Died | Henri-Augustin Le Pileur † | Bishop Emeritus of Saintes, France | 
| 28 Apr | 23.9 | Ordained Deacon | Mihály Karl (Michele Carlo) von Althan † | Deacon | Bishop of Vác, Hungary |