From a renowned medieval historian comes a new biography of King John, the infamous English king whose reign led to the establishment of the Magna Carta and the birth of constitutional democracy King John (1166-1216) has long been seen as the epitome of bad kings. The son of the most charismatic couple of the middle ages, Henry II and Eleanor of Aquitaine, and younger brother of the heroic crusader king, Richard the Lionheart, John lived much of his...