See Life by Vopiscus in Historiae Augustae Scriptores; also Eutropius, ix.
The letter of Hadrian to the consul Servianus (in Vopiscus, Vita Saturnini, 8) is no longer considered genuine.
The earliest occurrence of the name in any author is in the Vita Aureliani of Vopiscus (ch.
Vopiscus, Carinus (mainly the recital of his crimes); Aurelius Victor, De Caesaribus, 38, Epit.
Of his great work, we possess only the epitome by Justin, the prologi or summaries of the 44 books, and fragments in Vopiscus, Jerome, Augustine and other writers.
C. i 1, §§ 18 ff.; Julius Capitolinus, De Bello Marcomannico, 17; Vopiscus, Probus, 18; Dexippus, Excerpta, pp. 19 ff.
Life by Vopiscus; Zosimus i.