is an ancient trève attached to that of Plouguer in the thirteenth century. The Breton name is Karaez (spelled Carahes in the eleventh century in a charter of Count Hoel, based on the prefix "Kaer" which means "fortified place"). Carhaix is certainly the city behind the Carahes of medieval texts. At the time of the Tour d'Auvergne and the nineteenth century, it was believed in Kaer Ahès, the name, Ahès, of the legendary daughter of Gradlon that would have led Ys in his loss. The main roads leading to Carhaix were therefore often called "paths of Ohès" or "roads d'Ahès" (Bernard Tanguy). Ohès as Ahès are close to the name Hoël. The identification of the place Corophesium, mentioned only in the Annals of Lausanne, is debated (Carhaix or Coray?) For a place of war led by Louis the Pious against the Breton king Morman. It may be that Corophesium represents neither one nor the other, but corresponds, as Léon Fleuriot indicates in his book The Origins of Brittany (1987), to an error of the scribe. Bernard Tanguy brings Karaes closer to Carofes, attested in Low-Latin for the name of the city of Diablintes and for Charroux (Vienna). It would then be an old * Carofum / * Carofensis (evolution of quadruvium in carruvium), registering Carhaix in its function of road junction. For him, the Corophesium where Louis the Pious surrenders in 818 is a cacography of Carophesium. Moreover, could the association of Charlemagne with Carhaix in the novel of Aiquin be based on the expedition of his son, Louis the Pious, about which is named Corophesium? The permanence of the Carhaix crossroads function, together with its decline in the Lower Empire, may explain that, although the city was the capital of Osism, they did not leave their name as it was the case. more often in Gaul. History The city was called Vorgium at the time of the Roman Empire. It was the chief town of the Osismii. Culture The Vieilles Charrues Festival (Literally: Old Ploughs Festival) is held every year in mid-July. This festival is one of the largest music events in Europe, attracting more than 200,000 people every year. It is held in the fields once held by the famille de Saisy de Kerampuil and the festival venue is next to the Chateau Kerampuil. In continental histories Carhaix is thought to be Carohaise of King Leodegrance and the