period, or Bolingbroke Castle in Lincolnshire and Beeston Castle in Cheshire, both built in the 1220s. The castle was built of Kentish ragstone and cemented by a mortar containing a large proportion of seashells, particularly cockleshells from the cockle beds of neighbouring Canvey Island. A valuable tidal watermill had been built by 1249, essential for making bread for the castle; recent archaeological work suggests that it was positioned on a wharf reaching out into the estuary just to the south-east of the castle. Terraced gardens were built along the south side of the castle overlooking the estuary, probably including vineyards. De Burgh finally fell out of favour with Henry III; he was imprisoned and then finally stripped of Hadleigh Castle in 1239. For the rest of the century, Hadleigh was retained as a royal castle, as part of an estate containing of agricultural land, the park and the castle mill. By the 1250s, the castle had fallen into neglect and, despite some investment after it was given to Queen Eleanor in 1273, it remained in relatively poor condition. Only the mill, vital for the operation of the wider estate, appears to have been well-maintained. A new 17-metre-wide by 9-metre-long (56 foot by 30 foot) hall and an adjacent solar complex were built at the castle around 1290, but collapsed due to subsidence shortly afterwards. In 1299 the castle was given to Queen Margaret, who complained about the quality of the building and insisted that repairs were carried out. Her husband, Edward I, visited the castle twice, using it as a base for hunting in the area. 14th century Edward II took a much closer interest in Hadleigh, leading to a period of renewal and rebuilding during his reign and that of his son, Edward III. Edward II first stayed there in 1311, and work was done to renovate the castle before he arrived, including building new royal quarters and repairing some of the castle walls that had succumbed to subsidence. Amongst the buildings known to be in the castle during the period were the castle hall, larder, kitchen, cellar, a long house, prison, an "old chamber" and armoury; they were guarded by a garrison of 24 soldiers during crises. Edward stayed there frequently during his reign up until 1324, on occasion travelling to Hadleigh Castle from London on his royal barge, which docked at a wharf to the south of