Heraclius the Elder died soon after receiving news of his son 's accession to the Byzantine throne .
Using North Africa as a base , the younger Heraclius managed to overthrow Phocas , beginning the Heraclian dynasty , which would rule Byzantium for a century .
Heraclius     died soon after receiving news of Heraclius ' son 's accession to Byzantium Byzantine throne .
Using North Africa as a base , the younger Heraclius managed to overthrow Phocas , beginning the Heraclian dynasty , which would rule Byzantium for a century .