Wallington is a square-set, grey-stone, eighteenth century house, sitting on top of the remains of an earlier castle, perhaps Norman in origin, perhaps that of the later Fenwick family. The Fenwicks held the estate from the Middle Ages until Sir John Fenwick sold it to Sir William Blackett in 1688. Sir John was a fiercely loyal Jacobite, who was eventually beheaded for treason in 1697