A second marriage to his niece, Martina, was widely blamed for many of the problems that befell the 
A second marriage to his niece, Martina, was widely blamed for many of the problems that befell the second portion of his reign as Byzantine Emperor, including the loss of Syria and Egypt to the Arabs. The first part, however, was filled with victories over the Sassanid Persians, who occupied large portions of the empire at the time of his accession. FTP, name this Emperor who sailed from Carthage to Constantinople to save the empire from its Persian foes.
A second marriage to his niece, Martina, was widely blamed for many of the problems that befell the second portion of his reign as Byzantine Emperor, including the loss of Syria and Egypt to the Arabs.
Heraclius I