Notes:

Mary Cookson was born on 10 May 1916. She is the daughter of Kenneth Cookson and Vivienne Tilla Butler.

She married, firstly, Major John George Spencer-Churchill, son of Major John Strange Spencer-Churchill and Lady Gwendoline Theresa Mary Bertie, on 20 May 1941. She and Major John George Spencer-Churchill were divorced in 1953.

She married, secondly, Jacob Herman Huizinga, son of Professor Dr. Johan Huizinga, on 25 March 1954.

Mary married Major John George Spencer-Churchill on 20 May 1941 in London City Registration District, Middlesex, England, and was divorced in Mar 1953. John (son of Major John Strange "Jack" Spencer-Churchill and Lady Gwendeline Theresa Mary Bertie) was born on 31 May 1909 in Paddington, Middlesex, England; died on 23 Jun 1992 in London, Middlesex, England. [Group Sheet] [Family Chart]