Thomas Asbridge is Reader in Medieval History at Queen Mary, University of London, and the author of 'The Greatest Knight: The Remarkable Life of William Marshal, the Power Behind Five English Thrones' (2015), 'The Crusades: The War for the Holy Land' (2010) and 'The First Crusade: A New History' (2004). He studied for a BA in Ancient and Medieval History at Cardiff University, and then gained his PhD in Medieval History at Royal Holloway, University of London.

Thomas wrote and presented a BBC Two documentary, 'The Greatest Knight: William Marshal', and a landmark three-part documentary series 'The Crusades' for BBC Two, filmed on location across the Near East and Europe. He also developed and presented the documentary 'The Crusader's Lost Fort' for BBC Two's Timewatch strand and has appeared in many other internationally broadcast television documentaries and radio programmes. He has worked as a historical consultant for HBO and Company Pictures.

For more information visit: www.thomasasbridge.com

Nine hundred years ago the Pope initiated one of the most controversial episodes in Christian history by stating that God wanted European knights to wage a fierce and bloody war against Islam and recapture Jerusalem. Thus was the First Crusade born. Its story is compelling, capable of inspiring awe through tales of bold adventure and revulsion through excesses of violence and barbarity, while at the same time providing us with significant insights into medieval society, morality and mentality. Tom Asbridge re-creates this fascinating period of history in a stunning narrative. Compelling and enlightening in equal measure, and drawing on new research which has radically remoulded our understanding of the movement, THE FIRST CRUSADE is a major work by an outstanding young historian.