Is the estate of Chissingworth in A Garden Folly based on a real country house?

It is based on several. The house was inspired by Chatsworth in Derbyshire and Burghley House in Lincolnshire, both very grand estates, worthy of my fictional duke.

The gardens were inspired by Chatsworth, Mount Edgecumbe in Cornwall, Stourhead in Wiltshire, and Chiswick in London.