Oliver CreightonOliver Creighton is Associate Professor in Archaeology at the University of Exeter. He is the author of Designs upon the Land: Elite Landscapes of the Middle Ages (2009), Castles and Landscapes (2002 and 2005), (with R.A. Higham)Medieval Town Walls: A Social History and Archaeology of Urban Defence (2005) and Medieval Castles (2003). Read More Read Less