Hadfield was born Alice Mary Smyth in Cirencester on 14 December 1908. She was educated at Oxford University and Mount Holyoke College, Massachusetts. Her first husband, Peter Miller, was killed during the Second World War, near Amiens at the retreat to Dunkirk in 1940. After this she went to Bermuda with her baby daughter Laura, where she worked in the British code breaking service. On the journey, her convoy was attacked by U-boats and the ship next to hers was sunk.
Second marriage
Hadfield's second marriage was to the canal historian Charles Hadfield, co-founder of the publishers David & Charles, in Paddington in 1945. It was the second marriage for both of them. They lived in London and had two sons, one of whom died when still a baby, a daughter and adopted another son. They were both influenced by the ideas on Romantic Theology developed by Charles Williams who Alice Mary had met when he had been a member of the original committee on the contents of The Oxford Dictionary of Quotations, and they practiced in their marriage his theories of Co-inherence and the Way of Exchange.
Career
Hadfield replaced Phyllis Jones as librarian at Amen House for Oxford University Press. She was also co-ordinating editor of the first edition of The OxfordDictionary of Quotations. Her first published work was What happens next , published by Falcon Press in 1950. She wrote on a diverse range of subjects that included British and local history, particularly of her native Cotswolds, produced a number of works with her husband, who was an expert on British canals, and wrote a children's series known as "The Williver chronicles". She produced an adaption of Sir Thomas Malory's Le morte d'Arthur and a scholarly study of The Chartist Land Company. Her last book was a biographical study of Charles Williams, finished with the help of her husband as her faculties were beginning to fail, and her last work was an edited edition of Williams's Outlines of romantic theology.
Societies
Hadfield and her husband founded two societies, the South Cerney Trust in 1963, and the Charles Williams Society in 1975.
Death
Hadfield died in Cirencester in 1989.
Selected publications
As editor
The Oxford Dictionary of Quotations. Oxford University Press, London, 1941.
Outlines of romantic theology: With which is reprinted Religion and love in Dante: the theology of romantic love. W.B. Eerdmans, Grand Rapids, 1990.
As author
What happens next . Falcon Press, London, 1950.
Malory, Sir Thomas. King Arthur and the round table. Dent, London, 1953.
An introduction to Charles Williams. Hale, London, 1959.
Time to finish the game: The English and the Armada. 1964.