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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, ...

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Murray [née Clarke], Joan Elisabeth Lowther (1917–1996), cryptanalyst and numismatist, was born at 45 Idmiston Road, West Norwood, London, on 24 June 1917, the youngest child (there were three sons, and another daughter) of William Kemp Lowther Clarke, a Church of England...