Isabella Tree, Lady Burrell is a British author and conservationist. She is author of the Richard Jefferies Society Literature Award-winning book Wilding: the return of nature to a British farm that describes the creation of Knepp Wildland, the first large-scale rewilding project in lowland England. The 3,500-acre (1,400-hectare) wildland project was created in the grounds of Knepp Castle, the ancestral home of her husband, Sir Charles Burrell, a landowner and conservationist.