Middle Ages- Western Timeline By 2005487 400 he Barbarian invasion of the Western Roman Empire 400-499 476 The last Western Roman Emperor is deposed Jan 1, 793 The Vikings begin attacking Christian settlements Jan 1, 800 Charlemagne is crowned as Emperor of the Holy Roman Empire Jan 1, 1066 The Normans conquer England Jan 1, 1099 The First Crusade captures Jerusalem from the Muslims Jan 1, 1291 The last Crusade fails