Alexios IV Angelos

Alexios IV Angelos
Emperor and Autocrat of the Romans
15th-century portrait of Alexios IV (from a 15th-century codex containing a copy of the Extracts of History by Joannes Zonaras)
Byzantine emperor
Reign	19 July 1203 – 27 January 1204
Coronation	1 August 1203[1]
Predecessor	Alexios III Angelos
Successor	Alexios V Doukas
Co-Emperor	Isaac II Angelos
Born	c. 1182
Died	February 1204 (aged 21) Constantinople (now Istanbul, Turkey)
Names Alexios Angelos Αλέξιος Άγγελος
Dynasty	Angelos
Father	Isaac II Angelos
Mother	Irene (Palaiologos?)
Religion	Eastern Orthodox

Alexios IV Angelos (Greek: Ἀλέξιος Ἄγγελος, romanized: Aléxios Ángelos; c. 1182 – February 1204), Latinized as Alexius IV Angelus, was Byzantine Emperor from August 1203 to January 1204. He was the son of Emperor Isaac II Angelos and his first wife, an unknown Palaiologina, who became a nun with the name Irene. His paternal uncle was his predecessor Emperor Alexios III Angelos. He is widely regarded as one of the worst Byzantine emperors for calling upon the Fourth Crusade to help him gain power, which ultimately led to the sack of Constantinople.