This is the first biography of one of the wealthiest and most influential bishops of medieval Europe, who for a period of over thirty years exercised a degree of power over the thirteenth-century Plantagenet court second only to that of the king. The career of Peter des Roches and the activities of his fellow aliens are fundamental to an understanding of the process by which England and France developed as two separate kingdoms. The book also sheds new light on such hotly-debated issues as the role of aliens in English politics, the reception of Magna Carta, the loss of Normandy, and the constitutional and administrative developments of the reign of Henry III.
Professor Nicholas Vincent of the University of East Anglia has published a dozen books and some hundred articles on twelfth- and thirteenth-century history for both scholarly and popular audiences, including work on the English and European context of Magna Carta as well as Magna Carta: A Very Short Introduction (Oxford, 2012). When a 1297 issue of Magna Carta recently came up for auction, Professor Vincent was commissioned by Sotheby’s to write the catalogue. During his research he discovered two previously unidentified originals of Magna Carta. For the Magna Carta Project he has been searching archives across Britain, Ireland and France for the charters of King John.