Martyn Whittock graduated in Politics from Bristol University and is the author or co-author of fifty-two books, including school history textbooks and adult history books. He taught history for thirty-five years and latterly, was curriculum leader for Spiritual, Moral, Social and Cultural education at a Wiltshire secondary school. He is a Licensed Lay Minister in the Church of England. He has acted as an historical consultant to the National Trust and English Heritage. He retired from teaching in July 2016 to devote more time to writing. His Lion books include: The Vikings: from Odin to Christ, Christ: The First 2000 Years, Daughters of Eve, Jesus: The Unauthorized Biography, and The Story of the Cross.  Esther Whittock is a religious studies teacher and author living in England. She is a University of Cambridge graduate in Theology and Religious studies. Martyn Whittock is her father.