Titus Flavius Titianus was Procurator of Alexandria during the reign of Caracalla. He was put to death by Theocritus, the favourite of Caracalla, about AD 216.Cassius Dio, lxxvii. 21.Dictionary of Greek and Roman Biography and Mythology, vol. III, p. 1157 ("Titianus, Flavius"). He is probably the same Titus Flavius Titianus who was consul suffectus about 200; that Titianus was the son of Titus Flavius Claudius Sulpicianus, and brother of Flavia Titiana, the wife of the emperor Pertinax. Titianus was married to Postumia Varia.Mennen, Power and Status in the Roman Empire, p. 122.
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Bibliography Lucius Cassius Dio, Roman History. Dictionary of Greek and Roman Biography and Mythology, William Smith, ed., Little, Brown and Company, Boston (1849). Inge Mennen, Power and Status in the Roman Empire, AD 193–284, Brill (2011).