Chauny is a commune in the Aisne department in Hauts-de-France in northern France.

History

There has been a settlement on the site, more or less continuously, since at least the Carolingian era. Known variously as Calgny, Cauny, Canni, Calni or as Chaulni. In Latin, contemporary chroniclers and historians such as Flodoard, Guibert

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