John of Brienne: King of Jerusalem, Emperor of Constantinople, c.1175-1237

John of Brienne's progress, from mid-ranking knightly status to king of Jerusalem and, later, Latin emperor of Constantinople, traces one of the most remarkable careers in the entire medieval period. But how and why did he achieve such heights? This biographical study of aristocratic social and geographical mobility in the 'Age of the Crusades' reassesses John's fascinating life, and explores how families and dynasticism, politics, intrigue, religion and war all contributed to John's unprec...