The History of the Decline and Fall of the Roman Empire, by Edward Gibbon

Chapter XXXI: Invasion Of Italy, Occupation Of Territories By Barbarians

Invasion Of Italy By Alaric.—Manners Of The Roman Senate And People.—Rome Is Thrice Besieged, And At Length Pillaged, By The Goths.—Death Of Alaric.—The Goths Evacuate Italy.—Fall Of Constantine.—Gaul And Spain Are Occupied By The Barbarians. —Independence Of Britain.