In 1979 Lord Fizwilliam left the bulk of his great art collection and the estates of Milton, Cambridgeshire, Wentworth Woodhouse, near Doncaster, and Malton, North Yorkshire, as well as a grand town house in Belgrave Square to his widow, and to Elizabeth Anne, who was widely known in society as the daughter of Lord Fitzwilliam, a fact which she was known to confirm from time to time, though with reservations. Lady Hastings died from cancer at Milton in 1997. She was succeeded in her stewardship of the Fitzwilliam heritage by her son, Philip Naylor-Leyland, 4th Baronet.