William Marshal was first Earl of Pembroke, a valiant soldier, superb statesman, dashing on the tournament field, and an all-round medieval superhero. Talking Templars presenters Dr Steve Tibble and Tony McMahon take a look at this courageous figure from the Middle Ages. The shocking story of how, at the age of 5, he was nearly catapulted over a castle wall. And why he came to be closely associated with the Knights Templar.