Saloninus - Reign

Reign

Bray conjectures that Saloninus's appointment as Caesar, like that of his elder brother, Valerian II, in Illyria, was made at the instigation of Valerian I who was, simultaneously, the senior Emperor (Augustus) and grandfather of the two young Caesars and, as head of the Licinius clan, exercised also the potestas patriae over all members of the Imperial family, including his son Gallienus, his co-Emperor (and co-Augustus). Bray suggests that Valerian's motive in making these appointments was securing the succession and establishing a lasting imperial dynasty. We do not know how Valerian envisaged his grandson interacting with the existing governors and military commanders of the Gallic provinces. There is no reason to suppose that he ever thought the thing through as systematically as Diocletian when he established the Tetrarchy some thirty years later. However, Silvanus must have been a seasoned soldier and administrator, and he does seem to have harboured the notion that, as guardian of Saloninus, he should exercise real authority in Gaul. This was demonstrated by the circumstances in which he fell out with the usurper Postumus.

In 260 (probably in July) Silvanus (no doubt in Saloninus's name) ordered Postumus to hand over some booty that Postumus's troops had seized from a German warband which had been on its way home from a successful raid into Gaul. However, Postumus's men took violent exception to this attempt to enforce the rights of the representative of a distant emperor who was manifestly failing in his duty to protect the Gallic provinces. Asserting what was probably the prevailing custom of the frontier, they turned on Saloninus and Silvanus, who had to then flee to Cologne with some loyal troops. It was probably at this time that Postumus was acclaimed emperor by his army. Riding the tiger of military discontent which he could barely control, Postumus then besieged Saloninus and Silvanus in Cologne.