Analysis of information sources in references of the Wikipedia article "Phocas" in English language version.
The reign of Phocas the Thracian, which lasted for eight years, was the realisation of that dreaded something whose approach had long been felt.
The name Phocas appears as early as the fifth century; it is also attested for the sixth century; and there is of course, the Emperor Phocas, apparently of Cappadocian origin, who overthrew Maurice and was in turn overthrown by Heraclius early in the seventh century.
