Columbia subject headings:
Harvard subject headings:
Du Guesclin, Bertrand, comte de Longueville, approximately 1320-1380.
Jean III, le Bon, duke of Brittany, 1286-1341.
John, of Brittany, 1266?-1334.
Princeton subject headings:
Du Guesclin, Bertrand, comte de Longueville, approximately 1320-1380.
Jean III, le Bon, duke of Brittany, 1286-1341.