Florianus

Marcus Annius Florianus (died 276), also known as Florian, was briefly Roman emperor in the year 276. He took the throne after the death of his half-brother Tacitus, but was killed after 88 days by his own troops during his confrontation with the rival emperor Probus, who took over the Eastern provinces after Tacitus' death.

Source: Wikipedia — https://en.wikipedia.org/wiki/Florianus