Alastair Denniston, Date of Birth, Place of Birth, Date of Death

Alastair Denniston

British cryptographer and Royal Navy Commander

Date of Birth: 01-Dec-1881

Place of Birth: Greenock, Scotland, United Kingdom

Date of Death: 01-Jan-1961

Profession: mathematician, field hockey player, cryptographer

Nationality: United Kingdom

Zodiac Sign: Sagittarius

Commander Alexander "Alastair" Guthrie Denniston (1 December 1881 – 1 January 1961) was a Scottish codebreaker in Room 40, deputy head of the Government Code and Cypher School (GC&CS) and field hockey player.
Denniston was appointed operational head of GC&CS in 1919 and remained so until February 1942.