JULIACUM a town in Gallia Belgica. In the Antonine Itin. a road runs from Castellum ( Cassel) through Tongernto Juliacum, and thence to Colonia ( Cologne). Juliacum is 18 leagues from Colonia. Another road runs from Colonia Trajana to Juliacum, and from Juliacum through Tiberiacum to Cologne. On this road also Juliacum is placed 18 leagues from Cologne. Juliacum is Juliers, or Jülich, as the Germans call it, on the river Roer, on the carriage road from Cologneto Aix-la-Chapelle.
The first part of the word seems to be the Roman name Juli-, which is rendered more probable by finding between Juliacum and Colonia a place Tiberiacum ( Bercheimor Berghen). Acumis a common ending of the names of towns in North Gallia.
[G.L]