The disgrace and exile of Promotus were signified by a peremptory order, to repair, without delay, to a military station on the banks of the Danube; and the death of that general (though he was slain in a skirmish with the Barbarians) was imputed to the perfidious arts of Rufinus.

The sacrifice of a hero gratified his revenge; the honors of the consulship elated his vanity; but his power was still imperfect and precarious, as long as the important posts of praefect of the East, and of praefect of Constantinople, were filled by Tatian, and his son Proculus; whose united authority balanced, for some time, the ambition and favor of the master of the offices.

The two praefects were accused of rapine and corruption in the administration of the laws and finances.
For the trial of these illustrious offenders, the emperor constituted a special commission: several judges were named to share the guilt and reproach of injustice; but the right of pronouncing sentence was reserved to the president alone, and that president was Rufinus himself.
The father, stripped of the praefecture of the East, was thrown into a dungeon; but the son, conscious that few ministers can be found innocent, where an enemy is their judge, had secretly escaped; and Rufinus must have been satisfied with the least obnoxious victim, if despotism had not condescended to employ the basest and most ungenerous artifice.

The prosecution was conducted with an appearance of equity and moderation, which flattered Tatian with the hope of a favorable event: his confidence was fortified by the solemn assurances, and perfidious oaths, of the president, who presumed to interpose the sacred name of Theodosius himself; and the unhappy father was at last persuaded to recall, by a private letter, the fugitive Proculus.

He was instantly seized, examined, condemned, and beheaded, in one of the suburbs of Constantinople, with a precipitation which disappointed the clemency of the emperor.