Valerian

Valerian ruled as emperor of the Roman Empire from 253 CE until his capture in 260 CE. In 253 CE an elderly Roman military commander and experienced former senator was proclaimed emperor by his troops - a very common occurrence at the time. As emperor Publius Lucinius Valerianus - commonly referred to as Valerian - would battle repeated incursions from the north and east, rarely stepping foot in Rome. Eventually, however, he would meet his unfortunate death at the hands of an enemy king and so become the only emperor to ever die in captivity.