Dramatic monologue refers to a type of poetry. These poems are dramatic in the sense that they have a theatrical quality; that is, the poem is meant to be read to an audience. To say that the poem is a monologue means that these are the words of one solitary speaker with no dialogue coming from any other characters. Think of one person standing alone on a stage speaking to an audience. Certainly, you are part of that audience, but the poem usually implies that the speaker is mainly talking to a specific person(s).
Summary
This poem is loosely based on historical events involving Alfonso, the Duke of Ferrara, who lived in the 16th century. The Duke is the speaker of the poem, and tells us he is entertaining an emissary who has come to negotiate the Duke’s marriage (he has recently been widowed) to the daughter of another powerful family. As he shows the visitor through his palace, he stops before a portrait of the late Duchess, apparently a young and lovely girl. The Duke begins reminiscing about the portrait sessions, then about the Duchess herself. His musings give way to a diatribe on her disgraceful behavior: he claims she flirted with everyone and did not appreciate his “gift of a nine-hundred-years- old name.” As his monologue continues, the reader realizes with ever-more chilling certainty that the Duke in fact caused the Duchess’s early demise: when her behavior escalated, “[he] gave commands; / Then all smiles stopped together.” Having made this disclosure, the Duke returns to the business at hand: arranging for another marriage, with another young girl. As the Duke and the emissary walk leave the painting behind, the Duke points out other notable artworks in his collection.