Location: 
Medieval Europe
Adam Kosto received his B.A. from Yale (1989), his M.Phil. from Cambridge (1990), and his Ph.D. from Harvard (1996). He is the author of Making Agreements in Medieval Catalonia: Power,Order, and the Written Word, 1000-1200 (2001), and co-editor of The Experience of Power in Medieval Europe, 950–1350 (2005) and Charters, Cartularies, and Archives: The Preservation and Transmission of Documents in the Medieval West (2002). He is currently working on a book on hostages as a mode of surety in medieval Europe and a project on the legal and documentary practices of laypeople in the Early Middle Ages.