"My Last Duchess". How Is the Character of the Duke Slowly Revealed in the Poem?

This historic poem, "My Last Duchess", was written by Robert Browning in the middle of the nineteenth century, more precisely, in the year of 1842. This dramatic monologue is written in rhyming couplets, but the poem is so well thought of and so well structured that the reader/listener doesn't even notice the rhyming sounds. During the poem, the Duke of Ferrara is speaking to an envoy of a Count, do discuss and arrange an agreement for the Duke to marry the Count's daughter, and in turn, the lady will be married to his "nine-hundred-years-old" name. …