The materials for the lives of all these tyrants are taken from six contemporary historians, two Latins and four Greeks: Orosius, 1. vii. c. 42, p. 581, 582, 583; Renatus Profuturus Frigeridus, apud Gregor. Turon. l. ii. c. 9, in the Historians of France, tom. ii. p. 165, 166; Zosimus,1. vi. [c. 2] p. 370, 371; Olympiodorus, apud Phot. p. 180, 181, 184, 185 [p. 57 sqq., ed. Bekk.]; Sozomen, 1. ix. c. 12, 13, 14, 15; and Philostorgius, 1. xii. c. 5, 6, with Godefroy's Dissertations, p. 477-481; besides the four Chronicles of Prosper Tyro, Prosper of Aquitain, Idatius, and Marcellinus.