Eaton Socon Castle stood beside the River Ouse

River Great Ouse

The Great Ouse is a river in the east of England. At long, it is the fourth-longest river in the United Kingdom. The river has been important for navigation, and for draining the low-lying region through which it flows. Its course has been modified several times, with the first recorded being in...

 in the village of Eaton Socon

Eaton Socon

Eaton Socon is a district of St Neots in Cambridgeshire, England. It was originally a village in Bedfordshire, along with the neighbouring village of Eaton Ford, but officially became part of the town in 1965...

, which was originally a village in Bedfordshire

Bedfordshire

Bedfordshire is a ceremonial county of historic origin in England that forms part of the East of England region.It borders Cambridgeshire to the north-east, Northamptonshire to the north, Buckinghamshire to the west and Hertfordshire to the south-east....

 but is now a district of St Neots

St Neots

St Neots is a town and civil parish with a population of 26,356 people. It lies on the River Great Ouse in Huntingdonshire District, approximately north of central London, and is the largest town in Cambridgeshire . The town is named after the Cornish monk St...

 in Cambridgeshire

Cambridgeshire

Cambridgeshire is a county in England, bordering Lincolnshire to the north, Norfolk to the northeast, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and Northamptonshire to the west...

 .

The castle was a Norman

Norman architecture

About|Romanesque architecture, primarily English|other buildings in Normandy|Architecture of Normandy.File:Durham Cathedral. Nave by James Valentine c.1890.jpg|thumb|200px|The nave of Durham Cathedral demonstrates the characteristic round arched style, though use of shallow pointed arches above the...

 double enclosure, whose construction required the demolition of Saxon

Saxons

The Saxons were a confederation of Germanic tribes originating on the North German plain. The Saxons earliest known area of settlement is Northern Albingia, an area approximately that of modern Holstein...

 houses, and was surrounded by moat

Moat

A moat is a deep, broad ditch, either dry or filled with water, that surrounds a castle, other building or town, historically to provide it with a preliminary line of defence. In some places moats evolved into more extensive water defences, including natural or artificial lakes, dams and sluices...

s filled with water diverted from the river. It was once in possession of the de Mandeville family but by 1156 was held by the Beauchamp

Earl of Warwick

Earl of Warwick is a title that has been created four times in British history and is one of the most prestigious titles in the peerages of the British Isles.-1088 creation:...

family.

Only earthworks now remain.