Kelly's Directory 1913 states :-
"Burghley House, the seat of the Most Hon. the Marquess of Exeter (custos of Peterborough soke) is a magnificent mansion of stone in the form of a parallelogram, erected in 1575, under the direction of John Thorpe, architect, in the reign of Elizabeth, by the Lord Treasurer William Cecil, 1st Baron of Burghley, and situated in the county of Northampton, about one mile and a half south from the town ; there is a beautiful courtyard and a chapel with a spire :
the park is studded with stately trees, and divided into three portions, viz. : the upper, lower and middle parks, of which the lower is always open to the public ; the middle park is used for grazing and game preserving, and the upper park contains an extensive herd of deer ; the entire park is about two miles in length and one in width, and contains about 1,500 acres :
the rearing of foreign trout for the lakes, which extend three quarters of a mile, is carried on in the conservatories with great success".
DB 25 March 2016