The core of the present house is
Elizabethan. However the south wing known as
King John's
tower, for some anachronistic reason, dates to the 14th century. This tower is constructed of
clunch, a building material peculiar to
Buckinghamshire, which is a combination of chalk and mud. The tower has traceried
Gothic windows and the remains of the original spiral staircase. A legend, relevant to this part of the house, is that
King Edward III and the
Black Prince stayed at Hampden House. During the stay the prince and his Hampden host were
jousting, when a quarrel arose, during which the prince was punched in the face by his host. This act of
lèse majesté caused the king and Prince to quit the place in great wrath, and cause their host to forfeit some of his estates to the crown. There is, however no documentary evidence for this act, or of the subsequent revenge although the Black Prince is known to have possessed land in nearby Princes Risborough during his life. The greater part of the original house was rebuilt in brick in the 17th century, this was again altered in the 18th century. The East wing overlooking the gardens is of a severe
classical 18th century style, built between two earlier wings. The chief feature of the grounds is 'The Glade', an avenue through the woods bordered by rhododendrons and ancient oaks. It is terminated by two small lodges known, because of their design, as the 'Pepper Pots'. It is said that the avenue was cut through the wood to facilitate easy access to the house for Queen
Elizabeth I when she was entertained at Hampden, during one of her progresses, by Griffith Hampden Esq. ==Gothic rebuilding==