Lady Anna Mervynia Vavasour (1812–1898) of Hazelwood Castle, was the eldest daughter of General Sir Henry Mervin Vavasour, 2nd Baronet of Spaldington. She married Joseph Dunnington-Jefferson of Thicket Priory in May 1837 and had three sons and three daughters. Only one son, Mervyn, married and had children.  Mervyn inherited the Priory and his son, Sir John Dunnington-Jefferson, lived at Thicket Priory with his family until 1952 when it he sold it to the Carmelite Sisters.