During King John's struggle with the barons, Magna Carta was issued in June 1215 at Runnymede near Egham. John's efforts to reverse this concession reignited the war, and in 1216 the barons invited Prince Louis of France to take the throne. Having landed in Kent and been welcomed in London, he advanced across Surrey to attack John, then at Winchester, occupying Reigate and Guildford castles along the way.