in 268 AD, before the city was founded, the Roman Emperor Gallienus defeated the usurper Aureolus near the bridge crossing, but was killed after the battle by a conspiracy instigated by Aureolus.
There has been a lot more archaeological evidence found to attest to Roman occupation in the parish, including A dispersed hoard of 300 to 400 Roman coins, mostly of Postumus, but including examples minted by Gallienus and Hostilian which were found via metal detecting in the 1980s.
In any event, Postumus ignored his invitation and Aureolus, unsupported by the Gallic usurper, was defeated by Gallienus in a battle on the River Adda east of Milan at a place known for centuries as Pontirolo (from Latin Pons Aureoli i.e. 'The Bridge of Aureolus').
The Battle of Naissus (268 or 269 AD) was the defeat of a Gothic coalition by the Roman Empire under Emperor Gallienus (or Claudius II) near Naissus (Niš in present-day Serbia).
Under threat of invasion by multiple tribes, Gallienus' troubles primarily lay with Postumus, whom he could not attack because his attention was required in dealing with Macrianus and the invading "Skythai."
Previously it had been speculated that Egnatius Marinianus was the father of Egnatia Mariniana, who was the wife of Valerian and mother of Gallienus.
This discovery, and especially Regallianus' existence, attracted the attention of scientists, as in the prosopography of the whole Roman Empire, the only occurrence of the cognomen "Regal(l)ianus" is that of a usurper who revolted against the emperor Gallienus (256 -268), Regalianus.
When the Macriani were defeated, he probably proclaimed himself emperor, but was defeated and killed by Aurelius Theodotus, a general sent by Gallienus.
The Philippopolis Inscription (epigraphic source 1. above) records that before he began to receive Imperial commissions as a dux Marcianus had been the tribunus of a Praetorian Cohort and a Protector of Gallienus.
If he was thus promoted, his authority is likely to have been confined to those provinces under Valerian's direct control – i.e. Asia, Mesopotamia and Syria – while Silvanus may have acted for Gallienus in an equivalent office.
But having been tempted to quit his stronghold and descend into the plain, he was there encountered and slain by Causisoleus, an Egyptian, one of the generals of Gallienus (dux Gallieni), brother of Theodotus who had defeated Mussius Aemilianus.