PETROMANTALUM in Gallia, is placed by the Antonine Itinerary on a road which runs from Carocotinum through Rotomagus ( Rouen) to Lutetia (Paris). It also appears on a road from Caesaromagus ( Beauvais) to Briva Isarae or Pontoise, on the Oise. a branch of the Seine. In the Table the name, is written Petrumviaco. The site is uncertain. The name bears some resemblance to that of Magni;but the site of Magnidoes not accurately correspond to the distances in the Itineraries.
[G.L]