Columbia subject headings:
Castile (Spain)--History--Alfonso X, 1252-1284.
Spain--Kings and rulers--Biography.
Violante, de Aragón, Queen, consort of, 1236-1301.
Harvard subject headings:
Castile (Spain)--History--Alfonso X, 1252-1284.
Queens--Spain--Castile--Biography.
Violant, of Aragon, Queen, consort of Alfonso X, King of Castile and Leon, 1236-1301.
Women--Political activity--Spain--Castile--History--To 1500.
Princeton subject headings: