John (24 December 1166 - 18/19 October 1216), also known as John Lackland (French: Sansterre), was King of England from 6 April 1199 until his death. During John's reign, England lost the Duchy of Normandy to King Philip II of France, which resulted in the collapse of most of the Angevin Empire and contributed to the subsequent growth in power of the Capetian dynasty during the 13th century. The baronial revolt at the end of John's reign led to the signing of the Magna Carta, a document often considered to be an early step in the evolution of the constitution of the United Kingdom. John, the youngest of five sons of King Henry II of England and Eleanor, Duchess of Aquitaine, was at first not expected to inherit significant lands. Following the failed rebellion of his elder brothers between 1173 and 1174, however, John became Henry's favourite child. He was appointed the Lord of Ireland in 1177 and given lands in England and on the continent. John's elder brothers William, Henry and Geoffrey died young; by the time Richard I became king in 1189, John was a potential heir to the throne. John unsuccessfully attempted a rebellion against Richard's royal administrators whilst his brother was participating in the Third Crusade. Despite this, after Richard died in 1199, John was proclaimed King of England. Contemporary chroniclers were mostly critical of John's performance as king, and his reign has since been the subject of significant debate and periodic revision by historians from the 16th century onwards. Historian Jim Bradbury has summarised the contemporary historical opinion of John's positive qualities, observing that John is today usually considered a "hard-working administrator, an able man, an able general". Nonetheless, modern historians agree that he also had many faults as king, including what historian Ralph Turner describes as "distasteful, even dangerous personality traits", such as pettiness, spitefulness and cruelty. These negative qualities provided extensive material for fiction writers in the Victorian era, and John remains a recurring character within Western popular culture, primarily as a villain in films and stories depicting the Robin Hood legends. John's personal life impacted heavily on his reign. Contemporary chroniclers state that John was sinfully lustful and lacking in piety. It was common for kings and nobles of the period to keep mistresses, but chroniclers complained that John's mistresses were married noblewomen, which was considered unacceptable. John had at least five children with mistresses during his first marriage to Isabelle of Gloucester, and two of those mistresses are known to have been noblewomen. Magna Carta - The 1215 Charter required King John of England to proclaim certain liberties, and accept that his will was not arbitrary, for example by explicitly accepting that no "freeman" (in the sense of non-serf) could be punished except through the law of the land, a right which is still in existence today.
Magna Carta was the first document forced onto an English King by a group of his subjects, the feudal barons, in an attempt to limit his powers by law and protect their privileges. Bartlett, Robert. (2000) England Under the Norman and Angevin Kings: 1075-1225. Oxford: Clarendon Press Bradbury, Jim. (2007) "Philip Augustus and King John: Personality and History," in Church (ed) 2007. Church, Stephen D. (ed) (2007) King John: New Interpretations. Woodbridge, UK: Boydell Press ( a huge list of references)