John of England captures a party of eighteen French knights  many men-at-arms in the ongoing conflict against 
France."King John" by Warren.  Published by University of California Press in 1961.  p. 47  King 
Richard I of England introduces a new Great Seal in an attempt to keep the war against 
France funded.  The government proclaims that charters previously struck with the old seal are no longer valid and must be renewed with a fresh payment."King John" by Warren.  Published by University of California Press in 1961.  p. 62  The office of 
Lord Warden of the Stannaries is also introduced to tax the produce of tin mines in 
Cornwall and 
Devon."King John" by Warren.  Published by University of California Press in 1961.  p. 124