The text "the last duchess" was written by Robert Browing in 1842 and is a famous dramatic monologue.
Analyzing the title, the intelligent reader can concentrate on the adjective "last", in fact it is expected that it is a special person, there will no longer be a person like the Duchess.

in summary, the monologue is based on the character of Alfonso, the duke of ferrara, who lived in the 16th century. The duke is also the narrator of the poem, and tells of the visit of the emissary spokesperson to negotiate the wedding, having remained a widower. While showing the palace to the emissary, he stops in front of the picture of his late wife, the Duchess, from here begins his monologue.

The monologue is made up of pentameter verses, and is full of rhymes couplets, with the aim of creating a melody.
The text is full of verbs in the first person, this underlines the duke's obsession with his late wife, in fact he is responsible for death.
The use of language, such as first-person verbs, in particular the verb "to have", connotes the duke's possessiveness, a man who is convinced he can have everything he wants.

A controversial element is also the fact that, the title might think that the monologue refers to the Duchess, but instead is totally focused on the duke.