Mary Soames' adoptive mother was born on 1 April 1885.
Mary Soames, Baroness Soames, ("ne" Spencer-Churchill; 15 September 1922  31 May 2014) was the youngest of the five children of Winston Churchill and his wife, Clementine. 
Clementine Ogilvy Spencer-Churchill, Baroness Spencer-Churchill, ("ne" Hozier; 1 April 1885 12 December 1977) was the wife of Sir Winston Churchill and a life peer in her own right. 
