John Constable lived in Hampstead between the years 1819 - 1837. One of the earliest and most celebrated of his Hampstead landscapes now in the Tate Gallery is 'A View to the North-West' which shows The Heath, Branch Hill Pond and Harrow in the far distance. It takes its title from a house called the 'Salt Box' which stood on this site.
The plaque has mis-named the painting; it's actually 'Hampstead Heath, with the House Called ‘The Salt Box’'.
The 1999 book 'Discovering London Plaques' by Derek Sumeray, lists a plaque for Constable, erected by the Hampstead Plaque Fund at this address. It also commemorates Sir Herbert Beerbohm Tree. We tried to find this some years ago, but the address is a 'gated' estate. Presumably, the original plaque is still on a house inside the enclave.
Site: John Constable - Mansion Gardens (1 memorial)
NW3, West Heath Road, Mansion Gardens
Credit for this entry to: Alan Patient of www.plaquesoflondon.co.uk