Jovinus' end comes after the Visigoths under…

Jovinus' end comes after the Visigoths under Ataulf leave Italy (at Priscus Attalus' advice), ostensibly to join him, carrying with them as hostages the ex-emperor Attalus and Galla Placidia, Honorius' half-sister.

Then Ataulf attacks and killed Sarus, who had also come to support Jovinus.

Jovinus, offended at this act, then fails to consult Ataulf when he elevates his brother Sebastianus as co-emperor.

Insulted, Ataulf allies his Visigoths with Honorius, and they defeat Jovinus' troops.

Sebastianus is executed.

Jovinus flees for his life, but is besieged and captured in Valentia (Valence, Drôme) and taken to Narbo (Narbonne), where Caius Posthumus Dardanus, the praetorian prefect (governor) in Gaul, who has remained loyal to Honorius, has him executed.

Jovinus' and Sebastianus' heads are afterwards sent to Honorius and mounted on the walls of Ravenna (before being passed on to Carthage, where they will be put on permanent display with the heads of four other usurpers).