The English under the Black Prince are besieging the fortress of Brest. The commander of the fortress, the Seigneur du Chastel, is finally forced to conclude an agreement by the terms of which he is to surrender the fortress to the Black Prince at a specified date if no help arrives before then; as hostage he gives his only son.
Auerbach uses the fortress of Brest as the structural fulcrum of a moral and emotional drama, making the besieged stronghold the site of an irresolvable conflict between paternal love and military honor.
, Mimesis: The Representation of Reality in Western Literature, 1953thesis