Columbia subject headings:
Dublin (Ireland)--Antiquities.
Dublin (Ireland)--History.
England--Antiquities.
Ireland--Antiquities.
York (England)--Antiquities.
York (England)--History.
Harvard subject headings:
Dublin (Ireland)--Antiquities.
Dublin (Ireland)--History.
Great Britain--History--Anglo Saxon period, 449-1066.
Northmen--England--History.
Northmen--Ireland--History.
Northumberland (England)--Antiquities.
Northumberland (England)--History.
Princeton subject headings: