| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 63.1 | Died | Giovanni Battista Anguisciola † | Titular Archbishop of Larissa in Thessalia |
| Born | Paulus Campsi † | Scutaren | Bishop of Lezhë {Lesh, Alessio}, Albania |
| 53.0 | Appointed | Antonio de Silva, S.J. † | Bishop of Nanking [Nanjing], China |
| 27.6 | Ordained Priest | Leopold Anton Eleutherius von Firmian † | Priest of Salzburg, Austria | Archbishop |
| Born | Claude-Antoine-François-Jacquemet Gaultier d’Ancyse † | Bourges | Bishop of Luçon, France |
| Born | Meletius Kovács † | | Auxiliary Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 43.4 | Died | Giovanni Maria (Pietro a Alcantara) de Leonardi, O.C.D. † | Vicar Apostolic of Great Moghul (Mughals), India |
| Born | Mathias Poncet de la Rivière † | Paris | Bishop Emeritus of Troyes, France |
| Born | Bernardo José Pérez de Oblitas † | Arequipa | Bishop of Santa Cruz de la Sierra, Bolivia |
| Born | Diego Rodríguez de Rivas y Velasco † | Riobamba | Bishop of Guadalajara, Jalisco, México |
| 70.0 | Died | Antonius de San Jurjo, O.P. † | Bishop of Astorga, Spain |
| 64.0 | Died | Stephanus Sciran, O.P. † | Archbishop of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 67.0 | Died | Mikołaj Stanisław Święcicki † | Bishop of Poznań, Poland |
| 2 Jan | 39.0 | Ordained Bishop | François Berger de Malissoles † | Bishop of Gap, France |
| 52.4 | Ordained Bishop | Agostino Steffani † | Titular Bishop of Spiga(z) (or Pegae) | Vicar Apostolic of Upper and Lower Saxony (Hanover), Germany |
| 9 Jan | | Born | Gottfried Xaver von Laimbeckhoven, S.J. † | Wien, Austria | Bishop of Nanking [Nanjing], China |
| 10 Jan | 59.0 | Died | Matteo Berniacovich, O.F.M. † | Bishop of Beograd {Belgrade}, Serbia |
| 13 Jan | | Born | Pietro Silvio di Gennaro † | Terra di S. Pietro | Bishop of Venosa, Italy |
| 15 Jan | | Born | Antonius de Castro † | Villa de Rey | Bishop of Malacca, Singapore |
| 17 Jan | | Born | Prospero Colonna di Sciarra † | Rome, Italy | Cardinal, Cardinal-Deacon of Sant’Agata de’ Goti |
| 20 Jan | 75.2 | Died | Leopold Karl von Kollonitsch Lipót † | Cardinal, Archbishop of Esztergom, Hungary |
| 40.3 | Succeeded | Christian August von Sachsen-Zeitz † | Cardinal, Archbishop of Esztergom, Hungary |
| 23 Jan | 46.9 | Ordained Bishop | Antoine de Charpin de Genetines † | Bishop of Limoges, France | Bishop Emeritus |
| 24 Jan | | Born | Domenico Micillo † | Giuliano | Bishop of Boiano, Italy |
| 30 Jan | 62.1 | Ordained Bishop | Ignacio Diez de la Barrera † | Bishop of Durango, México |
| Feb | 83.3 | Died | Domenico Lucchetti † | Bishop of Marsico Nuovo, Italy |
| 9 Feb | | Appointed | Adam Daemen † | Vicar Apostolic of Batavia (Holland Mission), Netherlands |
| Appointed | Adam Daemen † | Titular Bishop of Hadrianopolis in Haemimonto | Vicar Apostolic of Batavia (Holland Mission), Netherlands |
| 16 Feb | | Born | Wilhelm Anton von der Asseburg zu Hinnenburg † | Hinnenburg | Bishop of Paderborn, Germany |
| 17 Feb | 65.1 | Died | Giambattista Rubini † | Cardinal, Bishop Emeritus of Vicenza, Italy |
| 20 Feb | 38.2 | Ordained Bishop | Felicjan Konstanty Szaniawski † | Bishop of Włocławek (Kujawy, Kalisze), Poland | Bishop of Kraków, Poland |
| 21 Feb | 29.4 | Appointed | László Ádám Erdődy † | Bishop of Nitra, Slovakia |
| 47.1 | Appointed | François-Gaspard de La Mer de Matha † | Bishop of Aire, France |
| 52.1 | Appointed | Nicolò Rocco † | Bishop of Cassano all’Jonio, Italy |
| 22 Feb | 83.1 | Died | Gabriel de Roquette † | Bishop Emeritus of Autun, France | Bishop |
| 23 Feb | | Born | Juan Sáenz de Bururaga † | Barricano | Archbishop of Zaragoza, Spain |
| 27 Feb | 55.5 | Ordained Bishop | Manuel Álvares da Costa † | Bishop of Olinda, Brazil | Bishop of Angra, Portugal |
| Mar | | Born | Pierre-Joseph Artaud † | Boniliis | Bishop of Cavaillon, France |
| Born | Giuseppi Maria Massoni † | Calenzana | Bishop of Sagone (Sagona), France |
| 4 Mar | | Born | Andrés Cano y Junquera † | Villanueva de los Caballeros | Auxiliary Bishop of Sigüenza, Spain |
| 10 Mar | | Born | Nicola Molinari, O.F.M. Cap. † | Lagonegro | Bishop of Bovino, Italy |
| 15 Mar | | Appointed | Ambrose O’Madden † | Bishop of Kilmacduagh, Ireland | Bishop of Clonfert, Ireland |
| Appointed | Thaddeus Francis O’Rourke, O.F.M. † | Bishop of Killala, Ireland |
| 19 Mar | 26.1 | Ordained Priest | Gaetano Costa, O.F.M. † | Priest of Order of Friars Minor | Bishop of Crotone (Cotrone), Italy |
| 21 Mar | | Born | Francesco Castellini † | Forolivien | Bishop of Rimini, Italy |
| 42.2 | Appointed | Pedro de la Concepcion Urtiaga, O.F.M. † | Bishop of Puerto Rico (Porto Rico) |
| 44.0 | Appointed | José Fernández del Toro † | Bishop of Oviedo, Spain | Bishop Emeritus |
| 54.0 | Appointed | Egidio Quinto, O.F.M. † | Bishop of Sapë, Albania | Archbishop of Bar (Antivari), Montenegro |
| 47.2 | Installed | Orazio Filippo Spada † | Cardinal-Priest of Sant’Onofrio | Cardinal, Bishop of Osimo, Italy |
| 27 Mar | 18.5 | Professed | Filippo Maria di San Agostino (Camillo Apollonio) Malachisi, O.C.D. † | Member of Order of Discalced Carmelites | Bishop of Ispahan, Iran |
| 31 Mar | | Appointed | Edmund Byrne † | Archbishop of Dublin, Ireland |
| Born | Gaetanu Galbato † | Tortoreto | Titular Bishop of Amathus in Palaestina |
| 47.2 | Appointed | Hugh MacMahon (McMahon) † | Bishop of Clogher, Ireland | Archbishop of Armagh, Ireland |
| Appointed | Ambrose MacDermott, O.P. † | Bishop of Elphin, Ireland |
| 3 Apr | 36.5 | Ordained Bishop | Tomás de Almeida † | Bishop of Lamego, Portugal | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 9 Apr | 23.0 | Ordained Priest | Giulio de Turris † | Priest | Bishop of Ruvo (Ruo)(di Puglia), Italy |
| 10 Apr | 72.3 | Ordained Bishop | Juan González Santiago † | Bishop of Cuzco, Peru |
| 47.3 | Ordained Bishop | François-Gaspard de La Mer de Matha † | Bishop of Aire, France |
| 11 Apr | 56.3 | Appointed | Juan Arteaga Dicastillo † | Bishop of Orense, Spain |
| 59.3 | Appointed | Juan Bonilla Vargas, O.SS.T. † | Bishop of Córdoba, Spain |
| 53.4 | Appointed | Nicola Centomani † | Bishop of Monopoli, Italy |
| 50.9 | Appointed | Bisanzio Fili † | Bishop of Ostuni, Italy |
| 64.1 | Appointed | Callisto Lodigeri, O.S.M. † | Bishop of Montepulciano, Italy |
| 42.7 | Appointed | Fabio Mancinforte † | Bishop of Gubbio, Italy | Bishop Emeritus |
| 36.3 | Appointed | Giuseppe Maria Perrimezzi, O.M. † | Bishop of Ravello e Scala, Italy | Bishop Emeritus of Oppido Mamertina, Italy |
| 46.0 | Appointed | François-Hyacinthe de Ploeuc de Timeur † | Bishop of Quimper, France |
| 52.4 | Confirmed | Pierre de Sabatier † | Bishop of Amiens, France |
| 45.3 | Appointed | Giovanni Matteo Vitelloni † | Bishop of Catanzaro, Italy |
| 15 Apr | | Born | Stefano Evodio Assemani † | Tripoli, Lebanon | Titular Archbishop of Apamea in Bithynia |
| 17 Apr | 80.3 | Died | Gianfrancesco Riccamonti, O.S.B. † | Bishop of Cervia, Italy |
| 18 Apr | 59.3 | Died | Louis-Marcel de Coëtlogon-Méjusseaume † | Bishop of Tournai {Doornik}, Belgium |
| 23 Apr | 28.3 | Ordained Priest | Marc’Antonio Amalfitani † | Priest | Bishop of Ortona a Mare e Campli, Italy |
| 42.4 | Selected | Réné-François Beauvau de Rivau † | Bishop of Tournai {Doornik}, Belgium | Archbishop of Narbonne, France |
| 42.4 | Selected | André Dreuilhet (Drouillet) † | Bishop of Bayonne, France |
| 25 Apr | 31.2 | Ordained Priest | Carlo Francesco Airoldi † | Priest | Titular Archbishop of Side |
| 28 Apr | 78.3 | Died | Damianus Cornejo, O.F.M. † | Bishop Emeritus of Orense, Spain |
| 30 Apr | | Appointed | Hugh MacDermot † | Bishop of Achonry, Ireland |
| 60.2 | Died | Agnello Rossi, O. Carm. † | Bishop of Potenza, Italy |
| 1 May | 35.4 | Ordained Bishop | Joseph Clemens von Bayern von Wittelsbach † | Archbishop of Köln {Cologne}, Germany |
| 2 May | 61.6 | Ordained Bishop | Dionisio Resino (Rezino) y Ormachea † | Titular Bishop of Adramyttium | Auxiliary Bishop of Santiago de Cuba |
| 6 May | 66.3 | Died | Franz Christoph Rinck von Balderstein † | Auxiliary Bishop of Eichstätt, Germany |
| 10 May | 77.7 | Died | Stephanus Cosimi, C.R.S. † | Archbishop of Split (Spalato), Croatia |
| 15 May | 52.5 | Ordained Bishop | Pierre de Sabatier † | Bishop of Amiens, France |
| 17 May | 59.4 | Appointed | Ascanio Silvestri † | Bishop of Massa Marittima, Italy | Bishop of Pienza, Italy |
| 24 May | 54.5 | Installed | Diego Camacho y Ávila † | Bishop of Guadalajara, Jalisco, México |
| 93.7 | Died | Henri Albert de La Grange d’Arquien † | Cardinal, Cardinal-Deacon of San Nicola in Carcere |
| 29 May | | Ordained Bishop | Angelo Gabriele Gautieri, O.F.M. † | Titular Bishop of Cardicium | Vicar Apostolic of Transilvania, Erdély, Siebenbürgen, Romania |
| Jun | 56.5 | Ordained Bishop | Juan Arteaga Dicastillo † | Bishop of Orense, Spain |
| 68.4 | Died | Mario Emmanuelle Durazzo † | Bishop of Accia and Mariana, France |
| 2 Jun | 64.4 | Died | István Dolny † | Bishop of Csanád, Hungary |
| 7 Jun | 64.4 | Appointed | Manuel de Santo Tomás Mendoza, O.P. † | Bishop of Almería, Spain | Bishop of Málaga, Spain |
| 8 Jun | 47.4 | Appointed | François-Marie Abbati † | Bishop of Rieti, Italy | Bishop of Carpentras, France |
| 41.7 | Installed | Francesco Acquaviva d’Aragona † | Cardinal-Priest of San Bartolomeo all’Isola | Cardinal, Cardinal-Bishop of Sabina |
| 36.0 | Appointed | Lorenzo Altieri † | Cardinal-Deacon of San Nicola in Carcere | Cardinal, Cardinal-Deacon of Santa Maria in Via Lata |
| 58.4 | Appointed | Pedro Nogales Dávila † | Bishop of Tlaxcala, México |
| 49.1 | Appointed | Franz Arnold von Wolf-Metternich zur Gracht † | Bishop of Münster, Germany | Bishop of Paderborn, Germany |
| 18 Jun | 24.2 | Ordained Priest | Georg Xaver Marotti † | Priest of Pedena, Austria | Bishop |
| 23.2 | Ordained Priest | Federigo Muschi † | Priest | Bishop of Segni, Italy |
| 24.2 | Ordained Priest | Matteo (Marcello) Sacco † | Priest | Bishop of San Marco (Argentano), Italy |
| 31.2 | Ordained Priest | Giovanni Andrea Schiano † | Priest | Bishop of Massa Lubrense, Italy |
| 24.8 | Ordained Priest | Paul-Loup de Salières de Fosseran † | Priest | Bishop of Vaison, France |
| 19 Jun | 46.2 | Ordained Bishop | François-Hyacinthe de Ploeuc de Timeur † | Bishop of Quimper, France |
| 26 Jun | 25.2 | Ordained Priest | Agostino Bruti † | Priest | Bishop of Capodistria (Capo d’Istria)(Koper), Slovenia |
| 54.2 | Ordained Bishop | Egidio Quinto, O.F.M. † | Bishop of Sapë, Albania | Archbishop of Bar (Antivari), Montenegro |
| 29 Jun | 57.4 | Ordained Bishop | Francisco del Rincón, O.M. † | Archbishop of Santo Domingo, Dominican Republic | Archbishop of Santafé en Nueva Granada, Colombia |