Flavia'nus
2. FLAVIANUS, one of the praefects of the praetorium under Alexander Severus. He was appointed to the office on the accession of Alexander, in conjunction with Chrestus (A. D. 222). They were both men of military and administrative ability ; but the appointment of Ulpian nominally as their colleague, but really as their superior, having led to conspiracies on the part of the praetorian soldiers against Ulpian, Flavian and Chrestus were deposed and executed, and Ulpian made sole praefect. The year of their death is not ascertained, but it was not long before that of Ulpian himself, which took place at latest A. D. 228. (D. C. 80.2; Zosim. 1.11; Zonar. 12.15.)