Avranchin

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.

Avranchin is located in the Armorican Massif south of Cotentin in the department of Manche in western or lower Normandy.

During Roman rule it became part of the second division of Gallia Lugdunensis, which roughly corresponds to modern-day Normandy.

In 933 William Longsword was given control of a large part of Brittany (Avranchin included) in return for recognizing Rudolph of France as king of West Francia.