Anne Clarissa Spencer-Churchill was born 28 June 1920 in London, England, United Kingdom to John Strange Spencer-Churchill (1880-1947) and Gwendoline Theresa Mary Bertie (1885-1941) . She married Robert Anthony Eden, 1st Earl of Avon (1897-1977) 14 August 1952 in Caxton Hall Registry Office, Westminster, Greater London, England, United Kingdom.

Footnotes (including sources)

‡ General
₪ Wedding
  • LONDON, Thursday. Britain's Foreign Secretary, Mr. Anthony Eden, married Miss Clarissa Churchill, neice of the Prime Minister, to-day. The ceremony took place at a 10-minute service in fashionable Caxton Hall Registry Office. Mr. Winston Churchill was principal witness at the marriage.
The Canberra Times, 15 August 1952, page 1