[1] Knepp was a motte castle, probably founded in the 12th century by William de Braose,[2] in the Rape of Bramber.
The event was related by James Charles Michell, a member of the Sussex gentry, in the early 19th century as a piece of oral history handed down from his father.
[15][16] In the early 19th century the remnants were reinforced and fenced in by Sir Charles Burrell to protect them from further deterioration.
The name 'Knepp Castle' is also applied to the castellated Gothic Revival mansion built nearby in the early 19th century by Sir Charles Merrik Burrell, to the designs of John Nash,[17] and currently[when?]
In 1951, the castle was designated a scheduled monument, a scheme intended to protect nationally important archaeological sites.
[18][2] The wall on top of the motte was given additional protection in 1959 when it was designated a Grade II listed building.
[20] The castle stands on an oval mound, modelled from a natural feature, surrounded by a ditch and ramparts.
The ditch, fed from a nearby pond, formed a moat which still contained water at the beginning of the 18th century.
Thirteenth and fourteenth century documents record a chapel, and domestic structures including a hall and stables at the castle.
[1] The land around the castle is now the site of Knepp Wildland, the first large-scale rewilding project in England, created from 1,400 hectares or 3,500 acres of former arable and dairy farmland owned by Sir Charles Burrell, 10th Baronet.