Alexios IV Angelos

Alexios IV Angelos (lived 1182—1204, reigned 1203—1204) was a Byzantine emperor and the son of Emperor Isaac II Angelos. He is considered one of the worst Byzantine emperors because he called on the leaders of the Fourth Crusade to divert from their original goal of seizing Jerusalem from the Muslims to help him gain power. This led to the sacking of Constantinople, much of which was destroyed, and its treasures were looted and taken to Venice.