Syon House

Also known as, or recorded in historical documents as; Syon Abbey; Sion

In the civil parish of Brentford and Isleworth.
In the historic county of Middlesex (Modern Authority of London Borough of Hounslow, 1974 county of Greater London).

Bridgettine double house of Syon Abbey. The abbey moved here from Twickenham in 1431. It was dissolved in 1539, Richard Reynolds, one of the priests, being executed for refusing to take the Oath of Supremacy. He was canonized in 1970. The nuns returned for a short time when the house was refounded in 1557. Part of C15 undercroft survives in the present building. Retained by Henry VIII after the reformation as an occasional residence (Notably in 1542, when Catherine Howard, was housed in the cold, crumbling ruins of the convent, for several months, on her way to the Tower of London and execution) Protector Somerset reconstructed the house in 1547-52, substantially in its present shape.

This site has been described as a;
Palace.
The confidence that this site is a medieval fortification or palace is Possible.
Masonry ruins/remnants remains.

The Ordnance Survey Map Grid Reference is TQ17307665

Modern Map from Good for landscape form and features	Modern Map from Good for general location
Air Photo from	1st edition OS Map from

Sources of information, references and further reading

PastScape number; 397864, 534736

• Web site links
  • http://www.syonpark.co.uk/
• Books
  • Thurley, Simon, 1993, The Royal Palaces of Tudor England (Yale University Press) p50, 57
    Colvin, H.M., Ransome, D.R. and Summerson, John, 1982, The history of the King's Works, vol4: 1485-1660 (part 2) (London) p272-3
    Reynolds, Suan (ed), 1962, 'Heston and Isleworth: Syon House' VCH Middlesex Vol3 p97-100 http://www.british-history.ac.uk/report.asp?compid=22273
    RCHME, 1937, An inventory of the historical monuments in Middlesex No86a-88a [plan]