Severus Alexander

Marcus Aurelius Severus Alexander (1 October 208 AD – March 235 AD), also known as Alexander Severus, was Roman emperor from 222 until 235 AD. He was the last emperor from the Severan dynasty and, at the age of 13, became the youngest sole emperor of the united Roman Empire.

Alexander became emperor at age 13, succeeding his slain cousin, Emperor Elagabalus as his heir. Alexander and Elagabalus were both grandsons of Julia Maesa, the sister of the empress Julia Domna, who had arranged for Elagabalus's acclamation as emperor by the Third Gallic Legion.

Elagabalus had been murdered along with his mother Julia Soaemias by his own guards, who, as a mark of contempt, had the two bodies cast into the Tiber river.