Tresco Priory is a former monastic settlement on Tresco, Isles of Scilly founded in 946 AD. It was re-founded as the Priory of St Nicholas by monks from Tavistock Abbey in 1114. A charter of King Henry I mentions a priory as belonging to Tavistock Abbey in the reign of Edward the Confessor
Henry I, King of England, A.D. 1120, grants to William, Bishop of Exeter, and to Richard, son of Baldwin, and to his Justitiary of Devonshire and Cornwall in perpetual Alms to Osbert Abbot of Tavistock and Turold his monk, all the churches of Sully with the Appurtenances and the Land such as the Monks or Hermits held in the Time of King Edward and Burgal Bishop of Cornwall.
In 1367 King Edward III took the Priory under his special protection as the monks had complained that it was almost destroyed and impoverished by mariners, and in 1351 pirates had destroyed most of the Abbey property.
The Priory did not survive the Dissolution of the Monasteries and may well have closed earlier. The remains of the priory are now incorporated into Tresco Abbey Gardens. The 17 acre gardens were established by the nineteenth-century proprietor of the islands, Augustus Smith, originally as a private garden within the grounds of the home he designed and built.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.