Isleworth Manor

Has been described as a Possible Fortified Manor House, and also as a Possible Palace (Royal)

There are no visible remains

NameIsleworth Manor
Alternative Names
Historic CountryLondon and Middlesex
Modern AuthorityLondon Borough of Hounslow
1974 AuthorityGreater London
Civil ParishHounslow

On the death of Margaret de Clare in 1312, the manor of Isleworth passed to the Crown. Manorial accounts refer to several residential buildings arranged around a courtyard, and included the royal chambers, hall, kitchen, and chapel. Without the court was an outer courtyard containing barns and other outbuildings. In 1421 the manor house and manor were granted to the new Bridgettine foundation at Syon. A moated site exists at TQ153754 and may be the remains of this site (HKW). (PastScape 1393703)

Homestead moat, on the N. side of the road 1m W.S.W. of the church, has been almost entirely filled in (RCHME). A square moat with the entrance on the east side (VCH). (PastScape 397857)

For some time the power of the merchant oligarchy had been threatened by the populace, who had installed a democratic mayor, Thomas Fitz-Thomas, in 1263. Led by Hugh Despenser, the baronial justiciar, and with their own constable and marshal elected for the occasion, they made straight for Richard's manor of Isleworth, which he had surrounded with a ditch and stockade. They broke the head of the fishpond which he had constructed, at great cost, and destroyed everything that they could not steal. (Denholm-Young 1947)

Gatehouse Comments

Site now built over.

- Philip Davis

Not scheduled

Not Listed

Historic England (PastScape) Defra or Monument number(s)
County Historic Environment Record
OS Map Grid ReferenceTQ152755
HyperLink HyperLink HyperLink

No photos available. If you can provide pictures please contact Castlefacts

Most of the sites or buildings recorded in this web site are NOT open to the public and permission to visit a site must always be sought from the landowner or tenant.

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  • Creighton, Oliver, 2015, 'Castle, Landscape and Townscape in Thirteenth-Century England: Wallingford, Oxfordshire and the 'Princely Building Strategies' of Richard, Earl of Cornwall' in Jörg Peltzer (ed), Rank and Order: The Formation of Aristocratic Elites in Western and Central Europe, 500–1500 (Ostfildern: Thorbecke Jan Verlag) p. 309-341
  • Colvin, H.M., Brown, R.Allen and Taylor, A.J., 1963, The history of the King's Works Vol. 2: the Middle Ages (London: HMSO) p. 963-5
  • Denholm-Young, N., 1947, Rchard of Cornwall (Blackwell Publishers) p. 126 online copy
  • RCHME, 1937, An inventory of the historical monuments in Middlesex p. 86 no. 4 online transcription
  • Page, Wm (ed), 1911, 'Ancient earthworks' VCH Middlesex Vol. 2 p. 8


  • Bennett, Michael J., 2002, 'Richard II, Henry Yevele and a new royal mansion on the Thames' Antiquaries Journal Vol. 82 p. 343-9