Regaliānus, Regalliānus
or
Regilliānus. A Dacian who served with distinction under
the emperors Claudius and Valerian. The Moesians, terrified by the cruelties inflicted by
Gallienus on those who had taken part in the rebellion of Ingenuus, suddenly proclaimed
Regalianus emperor, and quickly, with the consent of the soldiers, in a new fit of alarm, put
him to death, A.D. 263. Hence he is enumerated among the
Thirty Tyrants (q.v.).