William Henry Cavendish-Scott-Bentinck, 4th Duke of Portland,, styled Marquess of Titchfield until 1809, was a British politician who served in various positions in the governments of George Canning and Lord Goderich.

Welbeck Abbey is an English mansion situated in the village of Welbeck, which is within the civil parish of Norton, Cuckney, Holbeck and Welbeck, in the Bassetlaw District of Nottinghamshire. It was the site of a monastery belonging to the Premonstratensian order in England and after the Dissolution of the Monasteries, a country house residence of the Dukes of Portland. It is part of the Dukeries, four contiguous ducal estates in North Nottinghamshire. The house is a Grade I listed building.