Jovinus ya zo ne bayan da Visigoths a karkashin Ataulf suka bar Italiya (a kan shawarar Priscus Attalus), a fili don shiga tare da shi, suna dauke da su a matsayin 'yan gudun hijira tsohon sarki Attalus da Galla Placidia, dan uwan Honorius. Sai Ataulf ya kai hari kuma ya kashe Sarus, wanda kuma ya zo ya goyi bayan Jovinus. Jovinus, wanda aka yi masa laifi a wannan aikin, to, bai tuntubi Ataulf ba lokacin da ya ɗaga ɗan'uwansa Sebastianus a matsayin co-emperor. An yi masa ba'a, Ataulf ya haɗa kai da Visigoths tare da Gaorius, kuma sun ci sojojin Jovinus. An kashe Sebastianus. Jovinus ya gudu don rayuwarsa, amma an kewaye shi kuma aka kama shi a Valentia (Valentia, Drômebo) da kuma Narbonna (Narbonna), inda aka kama shi da Caius Posthumus, Dardanus, da kuma Honorius.
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