About Sebastianus
Lived 400 – 413. Sebastianus was a Roman monarch.
Sebastianus (fl. 411–413), a brother of Jovinus, was an aristocrat of southern Gaul. After Jovinus usurped the throne of the western Roman Emperor Honorius in Gaul in 411, he named Sebastianus as Augustus (co-emperor) in 412. Coins bearing Sebastianus' image were then minted at Arles and Trier.
Due to broken relations between Jovinus and King Ataulf of the Visigoths, however, Ataulf captured Sebastianus in 413 and turned him over to Dardanus, Honorius' praetorian governor in Gaul. Dardanus then executed Sebastianus and sent his head to Honorius' court at Ravenna.
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Important facts
People in Sebastianus's life
Named in this biography and alive at the same time
Related people
Same field, nearest in time
Frequently asked questions
Who was Sebastianus?
5th-century Roman usurper
When was Sebastianus born?
Sebastianus was born in 400 in Narbonne.
When did Sebastianus die?
Sebastianus died in 413 in Narbonne.
What was Sebastianus's occupation?
Sebastianus was a monarch.
What nationality was Sebastianus?
Sebastianus was Roman.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Sebastianus. https://biography.guide/sebastianus/
MLA: "Sebastianus." Biography.guide, https://biography.guide/sebastianus/.
Chicago: "Sebastianus." Biography.guide. https://biography.guide/sebastianus/.
Data last updated: 2026-09-23 · Spot an error? Report a correction.
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