The speaker, the Duke of Ferrara, shows off a portrait of his late wife, the Duchess, to an envoy. He speaks proudly of the portrait but reveals that he grew jealous of the attention the Duchess gave to others, including the painter who created her portrait. The Duke implies that he took severe actions against his wife, suggesting he was responsible for her death. He dismisses the envoy to join others, showing his desire to move past his late wife and pursue a new marriage.