Columbia subject headings:
Brittany (France)--History--To 1500.
Brittany (France)--Kings and rulers--Biography.
Brittany (France)--Politics and government--To 1500.
Harvard subject headings:
Brittany (France)--History.
Brittany (France)--Kings and rulers--Biography.
Princeton subject headings:
Brittany (France)--History.
Brittany (France)--Kings and rulers--Biography.