Crispus soon had reason to complain, that while his infant brother Constantius was sent, with the title of Caesar, to reign over his peculiar department of the Gallic provinces, he, a prince of mature years, who had performed such recent and signal services, instead of being raised to the superior rank of Augustus, was confined almost a prisoner to his father's court; and exposed, without power or defence, to every calumny which the malice of his enemies could suggest.

Under such painful circumstances, the royal youth might not always be able to compose his behavior, or suppress his discontent; and we may be assured, that he was encompassed by a train of indiscreet or perfidious followers, who assiduously studied to inflame, and who were perhaps instructed to betray, the unguarded warmth of his resentment.

An edict of Constantine, published about this time, manifestly indicates his real or affected suspicions, that a secret conspiracy had been formed against his person and government.

By all the allurements of honors and rewards, he invites informers of every degree to accuse without exception his magistrates or ministers, his friends or his most intimate favorites, protesting, with a solemn asseveration, that he himself will listen to the charge, that he himself will revenge his injuries; and concluding with a prayer, which discovers some apprehension of danger, that the providence of the Supreme Being may still continue to protect the safety of the emperor and of the empire.
The informers, who complied with so liberal an invitation, were sufficiently versed in the arts of courts to select the friends and adherents of Crispus as the guilty persons; nor is there any reason to distrust the veracity of the emperor, who had promised an ample measure of revenge and punishment.

The policy of Constantine maintained, however, the same appearances of regard and confidence towards a son, whom he began to consider as his most irreconcilable enemy.