Historian Dr Tom Asbridge reveals the extraordinary life of William Marshall, the celebrated medieval knight often hailed as "the greatest knight in the world" and his incredible journey from humble origins and a childhood as a royal hostage to becoming a regent of England who fought alongside four kings. Marshall's unwavering loyalty and unparalleled chivalry didn't just save lives on the battlefield but also saved the English royal line from French conquest and played a pivotal role in the shaping of Magna Carta. His story is a testament to how one man's prowess and honor could dramatically alter the course...