J. O. Prestwich
John Oswald Prestwich (June 26, 1914 – January 25, 2003), nicknamed "JOP", was a medieval historian and fellow of Queen's College, Oxford. During the Second World War, he worked as a code breaker at Bletchley Park. Life. Prestwich was born in Leigh, Lancashire, and educated at the Sedbergh School in Cumbria and at Hertford College, Oxford. He received a prize fellowship at Magdalen College, Oxford, and in 1937 was named a Fellow at Queen's. In 1938, he married Menna Roberts, who was a historian of the 16th and 17th centuries and Fellow of St Hilda's  College, Oxford. She died in 1990. Prestwich retired in 1981 to Old Headington and died in 2003. He was survived by his son, Michael Prestwich, who is also a medieval historian. Scholarship. Prestwich's work focused on England in the 11th and 12th centuries. Although his small scholarly output is often noted, he had "towering influence" on the field and was "one of the most influential medievalists in Britain in the second half of the twentieth century", despite not founding a "Prestwich school of history". In 1982–83, he gave the Ford Lectures at Oxford on "The Place of War in  English History, 1066–1214". A book based on the lectures was edited by his son and published posthumously. The book also included an appendix containing a "spirited and effective demolition of feudalism as a useful or accurate description of anything that might have existed in the two centuries after the conquest". Bletchley Park. Like other academics, Prestwich worked at Bletchley Park as a code breaker from 1941 to 1944, taking advantage of his fluency in German. He recalled later: