It was founded in 1229, during the reign of Henry III, by Lady Ela the Countess of Salisbury. The Abbey was dedicated to St Mary and St Bernard and it saw its first nuns veiled there in 1232. It prospered during the Middle Ages, probably due to the wool trade in the area. But then Henry VIII had that little row over his divorce with the church and the Abbey got caught up in the Dissolution of the Monasteries of 1536. Henry sold the Abbey to Sir William Sharington for the grand total of £783.
Sharington turned the Abbey into a house. He made a few alterations during his time, no doubt to make it less Abbey like.
The Abbey's most famed occupant would probably be...
Hopefully the cauldron was a bit of a give away. Harry Potter and the Chamber of Secrets as well as Harry Potter and Half-Blood Prince were filmed here.