Columbia subject headings:
Anglo-Saxons--Northumbria (Kingdom)
Aristocracy (Social class)--Northumbria (Kingdom)
De obsessione Dunelmi.
Great Britain--Politics and government--449-1066.
Northumbria (Kingdom)--History.
Social history--Medieval, 500-1500.
Harvard subject headings:
Aristocracy (Social class)--England--Northumbria (Region)
De obsessione Dunelmi.
Great Britain--Politics and government--449-1066.
Northumbria (England : Region)--History--11th century.
Princeton subject headings:
Great Britain--History--To 1066--Sources.
Northumberland (England)--History--Sources.