|Bletsoe, Bedfordshire, England|
|Grid reference||grid reference|
|Type||Fortified manor house|
|Condition||Earthworks only remain, with parts of the later 16-17th century building|
|Built by||John Pateshull|
Bletsoe Castle was created by John Pateshull, who received a licence to crenellate an existing manor house on the east side of Bletsoe in 1327. 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.
In 1421 the house descended to Margaret Beauchamp who married Sir Oliver St John. On his death in 1437 she remarried John Beaufort, 1st Duke of Somerset and had one daughter, Margaret Beaufort, Countess of Richmond and Derby, who was born in the house on 31 May, although it remains in dispute whether she was born in 1441 or 1443. Margaret Beaufort later became the mother of Henry VII of England.
The house later passed down in the St John of Bletsoe family. 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. Much of this later building was pulled down, leaving a much smaller building, still incorporating parts of the older castle, within the older medieval earthworks.
Today the castle is a scheduled monument and a Grade II* listed building. The medieval moat has a diameter of 130 metres (430 ft), is on average 18 metres (59 ft) wide and 2.4 metres (7 ft 10 in) deep. The moat is water-filled in parts though the south side has been destroyed by the construction of agricultural buildings over it.
- Page, William, ed. (1912). "A History of the County of Bedford". pp. 40–43. Retrieved 8 July 2011 – via British History Online.
- Rickard, p.25.
- Mackenzie, p.138;
- Historic England. "Bletsoe Castle (Grade II*) (1114219)". National Heritage List for England. Retrieved 9 August 2014.
- "Bletsoe Castle Monument No. 360396". National Monuments Record, English Heritage. Archived from the original on 25 March 2012. Retrieved 8 July 2011. Cite uses deprecated parameter
- MacKenzie, James Dixon. (1896/2009) The Castles of England: Their Story and Structure. General Books LLC. ISBN 978-1-150-51044-1.
- Rickard, John. (2002) The castle community: the personnel of English and Welsh castles, 1272-1422. Woodbridge, UK: Boydell Press. ISBN 978-0-85115-913-3.