| Authorised form of name | Churchill; Sir; Winston Leonard Spencer (1874 - 1965) | 
| Dates | 1874 - 1965 | 
| Date of birth | 30 November 1874 | 
| Date of death | 24/01/1965 | 
| Activity | Education: Harrow School
 Career:
 Prime Minister (10 May 1940 - 27 July 1945; 26 October 1951 - 7 April 1955)
 Freemason, initiated in Churchill Lodge No 478, Oxford on 9 February 1871
 Medals and prizes:
 Nobel Prize (Literature) 1953
 Honours:
 CH 1922; OM 1946; KG 1953
 | 
| Membership category | Fellow | 
| Date of election | 29/05/1941 | 
| Source | Obituaries: Biographical Memoirs of Fellows of the Royal Society 1966 vol 12 pp 35-105, plate, by R V Jones
 References:
 David Kendall and Kenneth Post, 'The British 3-inch Anti-Aircraft Rocket. Part One: Dive Bombers' in NR 1996 vol 50 pp 229-239
 R V Jones, 'Lindemann Beyond the Laboratory' in NR 1986-87 vol 41 pp 191-210
 William McGucken, 'The Royal Society and the Genesis of the Scientific Advisory Committee to Britain's War Cabinet, 1939-1940' in NR 1978-9 vol 33 pp 87-115
 Vanity Fair 27 September 1900, 08 March 1911
 R Singh and F Riess, 'The nobel laureate Sir Chandrasekhara Venkata Raman FRS and his contacts with the British Scientific community in a social and political context' in NR 2004 vol 58 pp 47-64
 W van der Kloot, 'April 1915: Five Future Nobel Prize-Winners Inaugurate Weapons Of Mass Destruction And The Academic-Industrial-Military Complex' in NR 2004 vol 58 pp 149-160
 Library and Museum of Freemasonry, 'Freemasons and the Royal Society; Alphabetical List of Fellows of the Royal Society who were Freemasons'  London, 2010, page 21
 Drake, James and Packwood, Allen, eds. (2023) 'Letters for the ages: the private and personal letters of Sir Winston Churchill' (Bloomsbury Continuum)
 | 
| Code | NA8169 | 
Archives associated with this Fellow
| RefNo | Title | Date | 
| EC/1941/21 | Churchill, Sir Winston Leonard Spencer: certificate of election to the Royal Society |  | 
| MM/17/46 | Letter from WLS Churchill to FA Freeth | May 1918 | 
| IM/GA/WS/19245 | Churchill, Sir Winston Leonard Spencer | nd | 
| MDA/N/1/86 | Correspondence between Winston Churchill and the Royal Society | 1 December 1959 |