- Graf Heinrich "der Fette" von Northeim
- Gruffydd Ap Cynan
Birth - 1055 - Of, , Caernarvonshire, Wales - Gilbert Milhaud
Birth - 1055 - Of, Milhaud, Gard, France - Leopold Ii, Margrave Of Austria
Birth - about 1055 - Of, Tulln, Niederoesterreich, AUSTRIA - Gillachomhghaill O'Toole
Birth - about 1055 - Of, , , Ireland - Rainer Marquis Of Montferrat
Birth - about 1055 - , , , France - Raimund Berenger II Barcelona
Birth - 1055 - Barcelona, Espania - Graf Hermann III von Werl
- Erik I "Ejegod" Svendsøn
Birth - 1055 - Slangerup, Sjælland, Danmark - William de Warren
Birth - about 1055 - Of, Bellencombe, Seine Inferieure, France - Guillaume Iii Duke Alencon
Birth - about 1055 - Of, ALENCON, Orne, France - Robert Prince Of France
Birth - 1055 - Of, Reims, , France - Hywel Ap Rhys
Birth - about 1055 - Of, , Carmarthenshire, Wales - Maredudd Ap Gruffudd
Birth - about 1055 - Of, Rhuddlan, Flintshire, Wales - Ernulf de Hesding
- Arnoul Iii Count Flanders
Birth - 1055 - , Flanders, Belgium - Ithel Ap Einudd
Birth - about 1055 - Of, Dyffryn Clwyd, Denbighshire, Wales - Osbern Fitz Richard
Birth - about 1055 - Of, Herfordshire, England - Siward Biornsson
Death - 1055 - , York, Yorkshire, England - Bretislav I, Duke Bohemia
- Herzog Bretislav I von Böhmen
- Kaiser Konstantinos IX. Monomachos von Byzanz
- Adalbert "The Victorious", Margrave Of Austria
- Phillip Montgomery
Birth - about 1056 - Of Montgomery, Montgomery, Wales - Graf Kuno von Northeim
- Anseau de Boves
Birth - about 1056 - Boves, Somme, France - Roger de Breteuil
Birth - about 1056 - Of, , Herefordshire, England - Baudouin Ii Count Hainault
Birth - about 1056 - Of, HAINAULT, Belgium - Louis Montbelliard
Birth - about 1056 - Of Bar-Le-Duc, Meuse, France - Gillacaemphin O'Toole
- Igor Izyaslavich, Prince Kiev
Birth - about 1056 - Of, Kiev, Kiev, Ukraine - Alan, Senescal Of Dol
Birth - about 1056 - Of, Abbey Of St Flor, , Brittany
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