for music was perhaps what brought him together with his wife, Elaine Charlton, who was an accomplished pianist. Their marriage resulted in two sons, Oliver and John Richard, and one daughter, Margaret. He died of heart failure in Addenbrooke's Hospital, Cambridge, on 12 February 1958. Honours and awards Fellow of the Royal Society (1932) The Hartree unit of energy is named after him. The Hartree Centre is named after him. Books (also (1950) Cambridge University Press) References Further reading The Manchester differential analyser Fellows of the Royal Society 1897 births 1958 deaths People from Cambridge History of computing in the United Kingdom English physicists 20th-century English mathematicians Numerical analysts Mathematical physicists Academics of the Victoria University of Manchester John Humphrey Plummer Professors Alumni of St John's College, Cambridge People educated at Bedales School Computational chemists Manchester Literary and Philosophical Society