The time he lived is not certain : he may have lived as early as the 3rd century AD .
It is more likely that he lived in the time of the emperors Anastasius I and Justin I , in the early 6th century .
The time he lived is not certain : he may have lived as early as the 3rd century AD , but it is more likely that he lived in the time of the emperors Anastasius I and Justin I , in the early 6th century .