Auguste Longnon,
1911 Encyclopædia Britannica, Volume 5…
(1911)
“ Its name—in Latin Campania, “country of plains”—is derived from the immense plains near Reims, Châlons and Troyes. It was constituted towards the end of the middle ages by joining to the countship of Champagne the ecclesiastical duchies of Reims and Langres, together with the ecclesiastical countship of Châlons. Documents of the 12th and 13th centuries make it possible to determine the territorial configuration of the countship of Champagne with greater accuracy than in the case of any other fief of the crown of France. ”
