birth_date: 0001-12-22 00:00:00
avg_rating: 3.62
name: Sean Martin
about: Author of bestsellers The Knights Templar: The History &amp; Myths of the Legendary Military Order, The Gnostics: The First Christian Heretics and The Cathars: The Rise &amp; Fall of the Great Heresy. My new book, A Short History of Disease, will be published in June 2015.