Gwynne Owen Evans (real name John Robson Walby) was 24 years old when on 13 August 1964 he became one of the last two people in Britain to be executed, when he was hanged for the murder the previous 7 April of John Alan West. See the article on West for the story of the murder and trial and execution.

See also: Capital punishment in the United Kingdom, Peter Anthony Allen (his accomplice)