A map of Avranchin from 1716
The Avranchin is an area in Normandy, France corresponding to the territory of the Abrincatui, a tribe of Celts from whom the city of Avranches, the main town of the Avranchin, takes its name.
In 867, by the Treaty of Compiègne, Charles the Bald gave the Avranchin to Salomon, King of Brittany. In 933 it was reunited with the Duchy of Normandy by William I of Normandy.
- (French) Richard Seguin, Olivier Basselin, Essai sur l'histoire de l'industrie du bocage, Vire, Adam, 1910