Лугдунская Галлия
Decize is an ancient settlement first noted in the Commentarii de Bello Gallico where Julius Caesar settled a dispute involving the Decetiae from whom comes the town's name—in Roman times the town’s name was Decetia in Gallia Lugdunensis. In later times it belonged to the counts of Nevers, from whom it obtained a charter of franchise in 1226.