Macbeth
What sequence of events lead Duncan to name MacBeth Thane of Cawdor?
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The original Thane of Cawdor was simply known as Thane of Cawdor, that was his title. Thane just meant a lord over a given piece of land. He betrayed King Duncan in the rebellion. Duncan was so impressed with Macbeth's valor in battle that he executed Cawdor and gave his title to Macbeth.