Date | Age | Event | Bishop | Title | Current Title |
unknown | | Died | Pedro Alfonso † | Bishop of Porto, Portugal |
| Died | Amédée d’Amesin † | Bishop of Belley, France |
| Died | Niccolò degli Arcioni † | Bishop of Teramo, Italy |
| Died | Gyrd Aslason † | Bishop of Stavanger, Norway |
| Died | Aimerico d’Autun † | Bishop of Bosa, Italy |
| Died | Arnaldo de Barbazán, O.S.A. † | Bishop of Pamplona, Spain |
| Died | Guillaume Bertrand † | Bishop of Beauvais, France |
| Died | Pierre de Béreste (Bessio), O. Carm. † | Bishop of Vaison, France |
| Died | Guillaume de Cardaillac, O.S.B. † | Bishop of Montauban, France |
| Born | Werner von Falkenstein † | | Archbishop of Trier, Germany |
| Died | Filippo , O. Carm. † | Archbishop of Conza, Italy |
| Died | Bernardo Font, O. Carm. † | Bishop of Santa Giusta (Othoca), Italy |
| Died | Giacomo † | Bishop of Sora, Italy |
| Died | Giovanni † | Bishop of San Marco (Argentano), Italy |
| Died | Pedro Gómez Gudiel † | Bishop of Segovia, Spain |
| Born | Mikołaj Kurowski † | | Archbishop of Gniezno, Poland |
| Died | Jean de Luna † | Bishop of Catania, Italy |
| Died | Cornelius MacConama † | Bishop of Kilmore, Ireland |
| Appointed | Michael Malcolnhagh † | Bishop of Whithorn-Galloway, Scotland, Great Britain |
| Died | Diego de Navasquez, O. Carm. † | Archbishop of Torres, Italy |
| Born | Dobrogost z Nowego Dworu † | | Archbishop of Gniezno, Poland |
| Appointed | Richard O’Reilly † | Bishop of Kilmore, Ireland |
| Died | Saladino Pisanello † | Bishop of Dolia (Doglia), Italy |
| Died | John de Rait † | Bishop of Aberdeen, Scotland, Great Britain |
| Died | Sancho † | Bishop of Plasencia, Spain |
| Died | Sigmund † | Bishop of Strängnäs (Strengnäs), Sweden |
| Died | Stefano † | Bishop of Conversano, Italy |
| Appointed | Stjepan † | Bishop of Duvno, Bosnia and Herzegovina |
| Died | Paolo Gherardo de’ Vasconi, O.E.S.A. † | Bishop of Savona, Italy |
6 Jan | 57.0 | Died | William Bateman † | Bishop of Norwich, England, Great Britain |
12 Jan | | Died | Albrecht von Hohenfels † | Bishop Emeritus of Eichstätt, Germany |
16 Jan | | Appointed | Guillaume , O.S.B. † | Bishop of Alet, France |
29 Jan | | Died | Guglielmo Amidano, O.E.S.A. † | Bishop of Novara, Italy |
1 Feb | | Died | Pectin de Montesquieu † | Cardinal, Cardinal-Priest of Santi XII Apostoli |
4 Feb | | Appointed | Thomas Percy † | Bishop of Norwich, England, Great Britain |
13 Feb | | Appointed | Arnaldo Simon, O.P. † | Bishop of Ottana, Italy |
20 Feb | | Appointed | Pietro Coconato † | Bishop of Piacenza, Italy |
11 Mar | | Died | Simon Wedehall † | Bishop of Whithorn-Galloway, Scotland, Great Britain |
18 Mar | 57.2 | Appointed | Angelo Acciaiuoli, O.P. † | Bishop of Monte Cassino, Italy |
| Appointed | Francesco degli Atti † | Bishop of Firenze, Italy | Cardinal, Cardinal-Priest of San Marco |
| Appointed | Guido † | Bishop of Veroli, Italy |
23 Mar | | Appointed | Alfonso Fernández de Valencia † | Bishop of Zamora, Spain |
| Appointed | Pierre Gaufredi, O.E.S.A. † | Bishop of Toulon, France |
25 Mar | | Died | Ulrich Ribi, O.E.S.A. † | Bishop of Chur, Switzerland |
27 Mar | | Appointed | Giovanni di Montepulciano, O.E.S.A. † | Bishop of Vulturara, Italy | Bishop of Carinola (Calina), Italy |
16 Apr | | Died | Peder Jensen † | Archbishop of Lund, Sweden |
12 May | | Died | Hugues de Vienne † | Archbishop of Besançon, France |
18 May | | Appointed | John † | Bishop of Dunkeld, Scotland, Great Britain |
20 May | | Appointed | Pietro Capuano † | Archbishop of Amalfi, Italy |
25 May | | Died | Humbert de Viennois † | Titular Patriarch of Alexandria {Alessandria} |
27 May | | Appointed | Tomas Cormachain † | Bishop of Killaloe, Ireland |
31 May | | Died | Wojciech Pałuka † | Bishop of Poznań, Poland |
Jun | | Ordained Bishop | John † | Bishop of Dunkeld, Scotland, Great Britain |
8 Jun | | Appointed | Bertrando Colleti, O.P. † | Bishop of Ampurias, Italy | Bishop of Larino, Italy |
| Appointed | Aimo di Cossonay † | Bishop of Lausanne, Switzerland |
| Appointed | Jean de Vienne † | Archbishop of Besançon, France | Bishop of Basel, Switzerland |
10 Jun | | Appointed | Jacques de Deux, O.S.A. † | Bishop of Montauban, France | Bishop of Nîmes, France |
3 Jul | | Appointed | Azzone de’ Maggi † | Bishop of Treviso, Italy |
| Appointed | Giovanni Malabayla † | Bishop of Asti, Italy | Bishop of Saint-Jean-de-Maurienne, France |
12 Jul | | Ordained Bishop | Michael Malcolnhagh † | Bishop of Whithorn-Galloway, Scotland, Great Britain |
| Ordained Bishop | Michael Northburgh † | Bishop of London, England, Great Britain |
30 Jul | | Died | Johannes (Jan) Belger (z Miśni) † | Bishop of Warmia (Ermland), Poland |
31 Jul | | Appointed | Michel de Briche † | Bishop of Le Mans, France |
| Appointed | Jean de Craon † | Archbishop of Reims, France |
| Appointed | Matthias Hohenmaut, O. Cist. † | Bishop of Trebinje, Bosnia and Herzegovina |
| Appointed | Stefano di Teramo † | Bishop of Teramo, Italy |
| Appointed | Leonardo de Zori † | Bishop of Santa Giusta (Othoca), Italy |
4 Sep | | Appointed | Angelo Ricasoli † | Bishop of Sora, Italy | Bishop of Arezzo, Italy |
5 Oct | | Appointed | Arnaldo Bordach, O. Cist. † | Archbishop of Torres, Italy |
| Appointed | Jacob Kyrning † | Archbishop of Lund, Sweden |
7 Oct | | Appointed | Bottolf Asbjørnsson † | Bishop of Stavanger, Norway |
18 Oct | | Ordained Bishop | Juan García Palomeque † | Bishop of Badajoz, Spain | Bishop of Osma, Spain |
| Appointed | Gil † | Titular Bishop of Sidon | Bishop of Coria, Spain |
21 Oct | | Appointed | Laurent D’Albiars † | Bishop of Vaison, France | Bishop of Tulle, France |
| Died | Bertrand de Déaulx † | Cardinal, Cardinal-Bishop of Sabina |
23 Oct | | Died | Volrad von dem Dorne † | Bishop of Ratzeburg, Germany |
26 Oct | | Appointed | Giovanni de Bardaxino, O.F.M. † | Bishop of Dolia (Doglia), Italy |
| Appointed | Afonso Pires † | Bishop of Porto, Portugal |
28 Oct | | Died | Arnaud de Villemur, C.R.S.A. † | Cardinal, Cardinal-Priest of San Sisto |
30 Oct | | Confirmed | Ulrich von Weißenegg † | Bishop of Seckau, Austria |
17 Nov | | Appointed | Johannes Streifrock † | Bishop of Warmia (Ermland), Poland |
| Ordained Bishop | Johannes Streifrock † | Bishop of Warmia (Ermland), Poland |
20 Nov | | Appointed | Pierre de Monteruc † | Bishop of Pamplona, Spain | Cardinal, Cardinal-Priest of Sant’Anastasia |
27 Nov | | Appointed | Antonio de’ Saluzzi † | Bishop of Savona, Italy | Archbishop of Milano {Milan}, Italy |
| Appointed | Gonzalo , O.F.M. † | Bishop of Segovia, Spain |
4 Dec | | Appointed | Alexander de Kininmund † | Bishop of Aberdeen, Scotland, Great Britain |
| Appointed | Marziale , O.S.B. † | Bishop of Catania, Italy |
23 Dec | | Appointed | Gonzalo de la Torre † | Bishop of Ávila, Spain |
| Died | Foulques de Mathefelon † | Bishop of Angers, France |
| Appointed | Guglielmo Monstrio † | Archbishop of Messina, Italy | Archbishop Emeritus of Monreale, Italy |
| Appointed | Gerhoh von Waldeck † | Bishop of Chiemsee, Germany |