[1] Pateshull had owned the manor of Bletsoe since 1313, but with the death of his mother, in 1324, he inherited additional lands, allowing him to acquire permission to crenellate the property.

[2] In 1421 the house descended to Margaret Beauchamp who married Sir Oliver St John.

In the late 16th or early 17th century, a new building was erected around the castle, quadrangular in design with three or four storeys and gable windows.

[1] Today the castle is a scheduled monument and a Grade II* listed building.

The moat is water-filled in parts though the south side has been destroyed by the construction of agricultural buildings over it.