It is a peculiar quirk of the British aristocracy that you can hold a title, such as the duke of Devonshire, and have no connection to the part of the country to which it is referring. The Devonshires – first earls and later dukes – do not reside in Devon. Past and present property includes Bolton Abbey in North Yorkshire, and Chiswick House and Burlington House in London . The jewel in the portfolio is Chatsworth: a magnificent Grade I-listed pile in Derbyshire, often described as one of Britain’s favourite stately homes. For those who have a lot of it,...