Alexander, (Conel) Hugh O'Donel (1909–1974), chess player and cryptanalyst, was born in Cork on 19 April 1909, the eldest of four children of Conel William Long Alexander (1879–1920), professor of engineering at University College, Cork, and his wife, Hilda Barbara Bennett (1881–1964), of ...
Reviser: Ralph Erskine
Barry, Sir (Philip) Stuart Milner- (1906–1995), code-breaker and chess player, was born on 20 September 1906 in Hendon, London, the second youngest of six children (five sons and one daughter) of Edward Leopold Milner-Barry, a schoolteacher (later professor of modern languages at the ...
Batey [née Lever], Mavis Lilian (1921–2013), code-breaker and garden historian, was born on 5 May 1921 at 20 Crebor Street, Dulwich, London, the only daughter and younger child of Frederick (formerly Fred, later Stanley Frederick) Lever (1887/8–1971) and his wife, Lily Elizabeth, ...
T. F. Henderson
Reviser: Philip Carter
Blencowe, William (1683–1712), cryptographer, was born on 6 January 1683, the third son of Sir John Blencowe (1642–1726), a judge and baron of the exchequer, and his wife, Anne, the eldest daughter of the mathematician and cryptographer John Wallis. He matriculated at Lincoln College, Oxford...
Bonsall, Sir Arthur Wilfred [Bill] (1917–2014), intelligence officer and civil servant, was born on 25 June 1917 at 1 Clairville Road, Middlesbrough, the elder son of Wilfred Cook Bonsall (1888–1963), a private in the Machine Gun Corps and later company secretary at ...
Cooper, Joshua Edward Synge (1901–1981), cryptanalyst and intelligence officer, was born on 3 April 1901 in Fulham, the son of Richard Edward Synge Cooper, a chartered engineer, and his wife, Mary Eleanor, youngest daughter of William Burke. Joshua was the eldest of five children, four sons and a daughter, all brought up in ...
F. H. Hinsley
Reviser: Ralph Erskine
Denniston, Alexander Guthrie [Alastair] (1881–1961), cryptanalyst and intelligence officer, was born on 1 December 1881 at Greenock, the eldest child of James Denniston, a medical practitioner, and his wife, Agnes Guthrie. He was educated at Bowdon College, Cheshire, and at the universities of ...
E. I. Carlyle
Reviser: W. H. Brock
Ewing, Sir (James) Alfred (1855–1935), engineer and cryptographer, was born on 27 March 1855 at 109 Nethergate, Dundee, the youngest of the three sons of James Ewing (1810–1886), minister of St Andrew's Free Church, Dundee, and his wife, Marjory, eldest daughter of John Ferguson...