What nationality was the author of The Troublesome Reign of King John?
The Troublesome Reign of King John The Troublesome Reign of King John (c. 1589) is an Elizabethan history play, probably by George Peele, that is generally accepted by scholars as the source and model that William Shakespeare employed for his own "King John" (c. 1596).
John Sadler (historian) John Sadler is a British historian specialising in the Anglo-Scottish Border conflicts during the Middle Ages. Sadler is a regular contributor to military and historical journals and has published a number of books on the subject. He has taught and tutored history as well.