The Gatehouse website record for Lewisham Castle, Aldbourne Chase

In the civil parish of Aldbourne. In the historic county of Wiltshire (Modern Authority of Wiltshire, 1974 county of Wiltshire).

Rather weak and damaged earthwork.
Ringwork. Overall diameter 68m. The earthwork is strongest at the South-West (uphill) weakening towards the North-East quadrant where the outer ditch is ploughed out. The bank platform at SU24347386, suggests a mound that has been overthrown inwardly, exposing much of the flint content. Flints are prolific over the site and its surrounds. The site occupies a position at the head of a small coombe, and below the adjacent ridge. This does not altogether support the view of a purely military site, but suggests the re-use of a pre-existing pastoral feature such as that in Blakes Copse. It is well-situated to have functioned as a hunting lodge. (PastScape)
There is tradition of this being constructed/used by mercenaries of Louis the Dauphin in April 1217 and thus have an origin/use as a fieldwork similar to a siege castle. However Creighton suggests the work originated as a hunting lodge, being suitably located for the administration the surrounding chase and the accommodation of hunting parties.

The Ordnance Survey Map Grid Reference is SU24357386

Sources of information, references and further reading

This site's English Heritage (PastScape) Defra or Monument number is 225346
This site's County Historic Environment Record (formerly Sites and Monuments Record) number is SU27SW451 'grey' literature, such as watching brief reports, held by H.E.R.s is often poorly referenced and is unlikely to be recorded in this website.

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