See, on this ecclesiastical revolution of Rome, Ammianus, xv. 7. Athanas. tom. i. p. 834, 861 [tom. i. p. 307, ed. Bened.]. Sozomen, l. iv. c. 15. Theodoret, l. ii. c. 17. Sulp. Sever. Hist. Sacra 1. ii. p. 413. Hieronym. Chron. Marcellin. et Faustin. Libell. p. 3, 4. Tillemont, Mem. Eccles. tom. vi. p. 336.