"My Last Duchess"

1. A characteristic feature of the dramatic monologue is that the speaker communicates more about himself than he means to. What self-portrait does the Duke try to convey in his remarks to the Count's agent? What aspects of his personality and character does he reveal instead of or in addition to this?
2. The Duke frequently--almost obsessively--mentions the blushes that appeared on his duchess' cheek and throat. What does this indicate about him?
3. How does the Duke regard his last Duchess, in life and in death? What is the significance of his telling the agent at the end of the poem that the Count's daughter's "fair self" is "my object"?