In February 1216 William Marshall stormed Moreton Corbet castle on behalf of King John of England against Bartholomew Toret.

[3][page needed] The keep or great tower to the west was connected to the gatehouse by a curtain wall, which then curved south and looped to encircle the site, creating a bailey or courtyard.

At the western end of the extant curtain wall is a rectangular keep of two stories and a basement, dating from between the eleventh and early thirteenth centuries.

In the 16th century, Sir Andrew Corbet filled the courtyard to the east of the keep with a new house, stretching in a straight line to the south and west of the medieval structure.

[1] The perimeter wall to the west and south of the tower is now almost completely removed, leaving a gap between the castle and the later house.

"[4] It seems to have been influenced by the classical architecture of Italian buildings that he saw on his diplomatic travels, including Palladio's Basilica Palladiana in Vicenza.