Columbia subject headings:
Great Britain. Parliament--History.
Montfort, Simon de, Earl of Leicester, 1208?-1265.
Harvard subject headings:
Great Britain. Parliament--History--To 1500.
Great Britain. Parliament--History.
Montfort, Simon de, Earl of Leicester, 1208?-1265.
Montfort, Simon of, Earl of Leicester, 1208?-1265.
Princeton subject headings:
Great Britain. Parliament--History.
Montfort, Simon de, Earl of Leicester, 1208?-1265.