Respuesta :
The conclusion that can be drawn about the speaker's character is that he is extremely arrogant.
Robert Browning's poem “My Last Duchess” is about the story of the last wife of the Duke. The Duke himself is the narrator of the story. While entertaining an emissary who came to negotiate the Duke's marriage with the daughter of a powerful family, the Duke tells about his last wife. He shows the portrait of the Last Duchess and begins to tell about her. When the Duke narrated the story it becomes clear to the readers that the reason for the early demise of his wife was the Duke himself. He didn't appreciate his wife's smiling gratitude towards other men which turned him arrogant towards her.