What is recorded here

John o'Gaunt's House was a moated castle where Warin de Bassingbourn built a crenellated stone residence in 1266, anchoring the old Castle Manor at the north edge of Bassingbourn. A long causeway led across water to rectangular earthworks that rose above the marsh, suggesting a powerful local presence rather than a passive rural homestead. Coprolite diggers destroyed much of the structure in 1887, but the water channels and buried banks still mark the scale of the medieval design.

The National Heritage List for England records John o'Gaunt's House: a motte castle and moated site 300m NE of Haygate Farm as a scheduled monument. The saved point comes from the centre supplied by the official record. Listing does not by itself mean that the public may enter the place.

Built by members of the powerful Lancaster family, likely in the late 14th century, the site is associated with John of Gaunt, Duke of Lancaster, a key figure in English politics and military affairs. It is remembered for its historical links to the medieval aristocracy and its role in the regional defense and power structure of the period.

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