William John Cavendish Cavendish-Scott-Bentinck 5th Duke of Portland (12 September 1800 – 6 December 1879) styled Lord William Cavendish-Scott-Bentinck before 1824 and Marquess of Titchfield between 1824 and 1854 was a British aristocratic eccentric who preferred to live in seclusion. He had an underground maze excavated under his estate at Welbeck Abbey near Clumber Park in North Nottinghamshire.
