Dukes in the United Kingdom
Duke, in the United Kingdom, is the highest-ranking hereditary title in all four peerages of the British Isles. A duke thus outranks all other holders of titles of nobility (marquess, earl, viscount and baron).
Marquess of Exeter
The marquessate of Exeter is the senior marquessate in the Peerage of the United Kingdom. The Marquesses also hold the title of hereditary Grand Almoner and Lord Paramount of Peterborough.