Question: The title Marquess of Dorset has been created three times in the Peerage of England, it was then created in which year, for Edmund Beaufort, 1st Earl of Dorset?
Sentence (from "Marquess of Dorset"): It was then created in 1442 for Edmund Beaufort, 1st Earl of Dorset, who was created Duke of Somerset in 1448.
Relevant evidence: Yes