Date | Age | Event | Bishop | Title | Current Title |
unknown | | Appointed | Guillen de Aranyo, O.P. † | Bishop of Lérida, Spain |
| Appointed | Guillaume Beaufils † | Bishop of Nevers, France |
| Died | Þór Bokki † | Bishop of Garðar, Greenland |
| Selected | Borzysław † | Archbishop of Gniezno, Poland |
| Died | Leoline Bromfield † | Bishop of Saint Asaph, Wales, Great Britain |
| Appointed | Domenico † | Bishop of Torcello (Turris), Italy | Patriarch of Grado, Italy |
| Died | Ingjald † | Bishop of Hamar, Norway |
| Appointed | Patrick O’Cridigan † | Bishop of Kilmore, Ireland |
| Appointed | Hugues Odard † | Bishop of Angers, France |
| Died | Arne Sigurdsson † | Bishop of Bjørgvin (Bergen), Norway |
| Appointed | Audfinn Sigurdsson † | Bishop of Bjørgvin (Bergen), Norway |
| Born | Johann von Zesterfleth † | | Bishop of Verden, Germany |
12 Jan | | Died | Sigibodo de Lichtenberg † | Bishop of Speyer, Germany |
28 Jan | | Appointed | Raimond † | Bishop of Périgueux (Vesuna), France |
11 Feb | | Died | Gérard Doucet † | Bishop of Tarbes, France |
14 Mar | | Appointed | Jean d’Auxois † | Bishop of Troyes, France |
| Appointed | Guichard , O.S.B. † | Bishop of Bosnia (Bosna), Croatia | Bishop Emeritus |
29 Mar | | Appointed | Fortius d’Auch † | Bishop of Poitiers, France |
30 Mar | | Appointed | André de Frédol, O.S.A. † | Bishop of Uzés, France | Bishop of Maguelonne, France |
20 Apr | 50.3 | Died | Bertrand de Got † | Pope (Roma {Rome}, Italy) |
13 May | | Died | Guillaume le Maire † | Bishop of Angers, France |
30 May | | Died | Nils Kettilsson † | Archbishop of Uppsala, Sweden |
Jun | | Appointed | Emich von Leiningen † | Bishop of Speyer, Germany |
4 Jun | | Died | Jean de Savigny † | Bishop of Nevers, France |
27 Aug | | Died | Gottfried von Hexenagger † | Bishop of Freising, Germany |
7 Sep | | Selected | David ap Blethyn † | Bishop of Saint Asaph, Wales, Great Britain |
9 Sep | | Appointed | Olov Björnsson † | Archbishop of Uppsala, Sweden |
1 Oct | | Died | Altogrado Cattaneo † | Bishop of Vicenza, Italy |
3 Oct | | Appointed | Konrad der Sendlinger † | Bishop of Freising, Germany |
1 Nov | 54.8 | Died | Gottfried von Bülow † | Bishop of Schwerin, Germany |