Sir John Harrison (c. 1590 – 28 September 1669) was an English politician who sat in the House of Commons variously between 1640 and 1669. He supported the Royalist side in the English Civil War – his supported the King and suffered greatly from his loyalty, being fined £10,745. After the Restoration, Harrison was elected MP for Lancaster again in 1661 for the Cavalier Parliament and held the seat until his death in 1669 at Balls Park, Hertford.
Evelyn visited the manor house built by Sir John – Balls Park, Hertford.
Wikipedia for background.