Phocas

Phocas (Latin: Flavius Phocas Augustus; Greek: Φωκᾶς, Phokas) was Byzantine Emperor from 602 to 610. He usurped the throne from the Emperor Maurice, and was himself overthrown by Heraclius after losing a civil war.

Read more about Phocas:  Origins, Accession, Reign, Overthrow and Death