Vadicassii

The Vadicassii were an ancient Gallic tribe of the Roman period, located near the Meldi, on the frontier between Gallia Celtica and Gallia Belgica.

Name

The tribe is only mentioned once as Ou̓adikássioi by Ptolemy in the 2nd century AD.
They have sometimes been conflated with the Bodiocasses and with the Veliocasses, although the geographical indications given by Ptolemy do not match.
The modern region of Valois, attested as Pagus vadensis in 796 AD, and the town of Vez, attested as Vadum ca. 866, are probably named after the tribe.

Geography

Ptolemy places the tribe near the Meldi, on the borders of Gallia Belgica.
North of the Meldi lay the Carolingian-era Pagus vadisus, whose name closely resembles that of the Vadicassii. This area, situated between the Meldi and the Suessiones, corresponds to modern Valois, a territory that partially overlaps the domain of the Silvanectes.
Ptolemy gives Noiomagos as the Vadicassii capital. No ancient toponym in the region clearly matches that name, apart from Nogeon, though references to Nogeon date only from the 18th century.