Vem daterade John Desmond Bernal?

John Desmond Bernal, född 10 maj 1901 i Nenagh i County Tipperary på Irland, död 15 september 1971 i London, England, var en irländsk-brittisk fysiker, vetenskapsteoretiker och -historiker, framtidsforskare och politisk aktivist. Han undervisade i kristallografi vid Universitetet i Cambridge 1927–37, professor i fysik 1937–63 och i kristallografi 1963–68 vid Birkbeck College, University of London.

Margaret Emilia Gardiner OBE (22 April 1904 – 2 January 2005) was a radical modern British patron of artists and resident of Hampstead, London, from 1932, where she was also a left wing political activist. She was also for a time the partner of Professor John Desmond Bernal. She was known as "Mrs Bernal" for most of her life, but they were never married. In the 1980 Birthday Honours she was awarded an OBE for services to the Pier Arts Centre Trust, Stromness. She was referred to as Margaret Emilia Gardiner Bernal on the list.

Margot Claire Heinemann (18 November 1913 – 10 June 1992) was a British Marxist writer, drama scholar, and leading member of the Communist Party of Great Britain (CPGB).