Little is known of Asser beyond this work. Simon Keynes is Reader in Anglo-Saxon History at Cambridge University. He is the author of The Diplomas of King Aethelred 'the Unready' and of numerous articles on Anglo-Saxon history. Michael Lapidge is Bosworth Professor of Anglo-Saxon at Cambridge University and a Fellow of Clare College. He has translated the Latin writings of Aldhelm and is the author of numerous books on Latin literature.