In expiation of his father's involvement in the murder of Richard II Henry founded two monasteries. One was named Syon House in the order of St Saviour and St Bridget and set up here in 1415 in what was then Twickenham Park. The other was a Carthusian house across the river in Old Deer Park.

O/S Co-ords:1670.7470
Source(s):

Syon House - A seat of the Duke of Northumberland