Moulton Castle - Credit: Wikimedia Commons
Moulton Castle, also known as King's Hall Park, is a medieval earthwork and scheduled monument situated to the south of Moulton, Lincolnshire, England. It probably dates from the twelfth century. It was owned by Thomas de Moulton in the early thirteenth century and it was during this period of unrest when the fortifications were most likely constructed.Roffe, David; "Moulton: King's Hall"; Roffe.co.uk. Retrieved 13 June 2012 It remained under occupation by the Moulton family until at least 1313. Read more on Wikipedia
Source: en.wikipedia.org