On Thursday 8 June 1922, at 2.30 p.m. at 20 Hanover Square, "By direction of the Right Honourable Adèle, Countess Dowager of Essex", "Cassiobury Park estate including the historical family mansion, Little Cassiobury, and the West Herts Golf Links, embracing in all an Area of about 870 acres " was auctioned by Humbert & Flint, in conjunction with Knight, Frank & Rutley.