Otaci'lia Seve'ra, Ma'rcia>
the wife of the elder M. Julius Philippus, and the mother of the boy who was put to death by the praetorians. after the battle of Verona, A. D. 249.
She appears to have had a daughter also, since Zosimus speaks of a certain Severianus as the son-in-law of the emperor. No other circumstances are known regarding this princess, except that she was believed by many of the ancients to have been a Christain. The Alexandrian Chronicle makes a positive assertion to this effect, and Eusebius (Euseb. Hist. Eccl. 6.36
) mentions a letter, said to have been addressed to her by Origen. (Tillemont, Notes sur l' Empereur Philippe,
in his Histoire des Empereurs,
vol. lii. p, 499; Eckhel, vol. vii. p. 332; Zosim. 1.19.)