John Marco Allegro was a freethinker who challenged orthodox views on the Dead Sea Scrolls, the Bible and the history of religion.
After service in the Royal Navy during World War II, Allegro started to train for the Methodist ministry but transferred to a degree in Oriental Studies at the University of Manchester. In 1953 he was invited to become the first British representative on the international team working on the recently discovered Dead Sea Scrolls in Jordan. The following year he was appointed assistant lecturer in Comparative Semitic Philology at Manchester, and held a succession of lectureships there until he resigned in 1970 to become a full-time writer. In 1961 he was made Honorary Adviser on the Dead Sea scrolls to the Jordanian government.