Andrew Jotischky is Professor of Medieval History at Royal Holloway University of London. He is the author of Crusading and the Crusader States (2nd Edition, 2017), The Carmelites and Antiquity: Mendicants and their Pasts in the Middle Ages (2002), The Perfection of Solitude: Hermits and Months in the Crusader States (1995) as well as numerous articles in scholarly journals.