A Dictionary of Greek and Roman biography and mythology

7. The name is found in some other ancient authors; for instance in Aetius in several places, in each of which the same person is probably intended. Now the person quoted by Aetius (2.2. 91. p. 291) is the same who is quoted by Nicolaus Myrepsus (36.138. p. 738), and called " Actuarius ; " and as the title of " Actuarius " was only in use at the court of Constantinople (see Dict. of Ant. p. 748b. 2d ed.), this Theodorus probably lived in the fifth century after Christ, and cannot therefore be (as Haller supposed) the physician quoted by Pliny.