Rougemont Castle, also known as Exeter Castle, is the historic castle of the city of Exeter, Devon, England. It was built into the northern corner of the Roman city walls starting in or shortly after the year 1068, following Exeter's rebellion against William the Conqueror. In 1136 it was besieged for three months by King Stephen. An outer bailey, of which little now remains, was added later in the 12th century. The castle is mentioned in Shakespeare's play Richard III in a reference to that king's visit to Exeter in 1483. Devon's county court was located here from at least 1607, and the three Devon Witches—the last people in England to be executed for witchcraft—were tried and convicted at the Exeter Assizes in 1682. All the buildings inside the walls were swept away in the 1770s to make way for a new courthouse, which was extended by the addition of wings in 1895 and 1905. Because of its function as a court, the interior of the castle was not open to the public until the court moved to a new site in 2004. The entire site was later sold to a developer whose stated aim was to transform it into "the Covent Garden of the South West". The castle is named after the red stone found in the hill, and used in the construction of the original buildings, of which the large early Norman gatehouse is the main remaining feature. It is surrounded on three sides by the Rougemont Gardens and Northernhay Gardens, public parks now maintained by Exeter City Council. Construction and early history After the Norman conquest of 1066, Gytha, mother of the defeated King Harold, was living in Exeter and this may have caused the city to become a centre of resistance to William the Conqueror. Another reason for discontent may have been William's insistence that the city's traditional annual tribute of £18 must be increased. After Exeter's citizens rejected William's demand that they should swear an oath of fealty to him, he marched to the city in 1068 and laid siege to it for 18 days before it capitulated. The citizens of Exeter had been able to withstand William's siege thanks to the city wall, which had been first built by the Romans and extensively repaired in around 928 by King Athelstan. Although the siege ended with the surrender of the city, William ordered a castle