Zosimus, New History 3.02
Zosimus (Greek Ζώσιμος): Early Byzantine, pagan author of a history of the Roman Empire, published in the first quarter of the sixth century CE.
The translation of Zosimus' New History offered here was printed in 1814 by W. Green and T. Chaplin in London, and was probably prepared by J. Davis of the Military Chronicle and Military Classics Office. The translator is anonymous. The text was found at Tertullian.org. The notes were added by Jona Lendering.
[3.2.1] Constantius, having approved her advice, sent for Julian from Athens, where he lived among the philosophers, and excelled all his masters in every kind of learning. Accordingly, Julian returning from Greece into Italy, Constantius declared him caesar, gave him in marriage his sister Helena, and sent him beyond the Alps.
[3.2.2] But being naturally distrustful, he could not believe that Julian would be faithful to him, and therefore sent along with him Marcellus and Sallustius, to whom, and not to Caesar, he committed the entire administration of that government. Constantius, having thus disposed of Julian, marched himself into Pannonia and Moesia, and having there suppressed the Quadi and the Sarmatians, proceeded to the east, and was provoked to war by the inroads of the Persians.
[3.2.3] Julian by this time had arrived beyond the Alps into the Gallic nations which he was to rule. Perceiving that the barbarians continued committing the same violence, Eusebia, for the same reasons as before, persuaded Constantius to place the entire management of those countries into the hands of Julian.
[3.2.4] Of Julian's actions from that period through the short course of his future life, may be read at large in the historians and poets, though none that have ever written of him have fully reached to the justice of his character. Whoever desires it may see his own orations and epistles, and in them survey what he performed for the public service. Indeed I would give a fuller account of him, but that I ought not to interrupt the order of my history. However I shall notice his most signal actions in their proper place and particularly such circumstances as others have omitted.