Sebastianus was born in 391. The exact name of Sebastianus is unknown. Sebastianus became emperor of the Roman state in 412.
Sebastianus is an aristocrat. Sebastianus was interested in philosophy. Sebastianus had no idea of being an emperor. But Sebastianus was declared a Roman emperor by his brother.
Sebastianus tried to make economic investments to strengthen the Roman state Sebastianus created money for himself. But the Visigoths started a war against Sebastianus.
In 413 Sebastianus battled the Visigoths, but Sebastianus lost this war. And the Visigoths took Sebastianus as prisoner. Sebastianus was executed and killed by Visigoths.