When Caesar crushed the Belgic coalition forces at the confluence of the Aisne and the Miette, at Berry-au-Bac in 57 BC, the village of Acy-Romance had been in decline for some ten years. In contrast, the sacred site at Nanteuil-sur-Aisne and the oppidum at Château-Porcien were expanding rapidly.
The next twenty-five years would see profound changes in the area as a direct result of the Roman conquest, since Reims would become a civitas foederata, or client kingdom, in recompense for its alliance with the conqueror, and eventually be named capital of Gallia Belgica during the reign of Augustus. The major routes of communication linking Durocortorum to the Gallic towns would play a major role and the smaller towns, sacred sites and villages located alongside them would expand to the detriment of the more distant settlements. Which did not prevent the inhabitants of Acy-Romance from wearing the latest jewellery and buying new pottery. A cellar was found to contain the debris from the house above after it burned down, with a complete set of tableware, locks and some coins struck in Rome in 10 BC. Some large oval jars for holding liquids lay alongside plates made of the local terra rubra bearing the potters' stamps on their base, and pitchers made of light clay, all manufactured in the Remi region.
In the early 1st century AD, the last villager was cremated with his glassware and bone objects in the traditional Roman style. A limestone bust carved by a local craftsman probably shows a figure in a niche, from the front, the hair styled or wearing a hairnet. Found in the craftsmen's quarter, it is the last piece of evidence of activity in the village itself.
