Illustration from Cassell's illustrated history of England published circa 1896.
Info from wiki: In 1346, England's Edward III, after a victory in the Battle of Crécy, laid siege to Calais, while Philip VI of France ordered the city to hold out at all costs. Philip failed to lift the siege, and starvation eventually forced the city to parley for surrender. Medieval writer Jean Froissart (and only he) tells the story of what happened next: Edward offered to spare the people of the city if six of its top leaders would surrender themselves to him, presumably to be executed. Edward demanded that they walk out wearing nooses around their necks, and carrying the keys to the city and castle. One of the wealthiest of the town leaders, Eustache de Saint Pierre, volunteered first, and five other burghers joined with him. Saint Pierre led this envoy of volunteers to the city gates. It was this moment, and this poignant mix of defeat, heroic self-sacrifice, and willingness to face imminent death that Rodin captured in his sculpture, scaled somewhat larger than life. Although the burghers expected to be executed, their lives were spared by the intervention of England's queen, Philippa of Hainault, who persuaded her husband to exercise mercy by claiming that their deaths would be a bad omen for her unborn child. (Her son, Thomas of Windsor, only lived for one year.)