Columbia subject headings:
Diplomatics--England.
Gascony (France)--Politics and government.
Great Britain--History--To 1485--Sources.
Harvard subject headings:
Diplomatics--England.
France--Foreign relations--Great Britain.
Gascony (France)--History.
Gascony (France)--Politics and government.
Great Britain--Foreign relations--France.
Great Britain--History--To 1485--Sources.
Guyenne (France)--History.
Princeton subject headings:
Diplomatics--England.
Gascony (France)--Politics and government.
Great Britain--History--To 1485--Sources.