In the 9th century the island was devastated by the Vikings and the priory was placed under the secular protection of the Counts of Cornouaille ( in Armorican Brittany ).
42.
During the declining years of the Roman Empire, the earliest Brythonic populations in the Armorican peninsula, and Riothamus is called King of the Britons by the chronicler Jordanes.
43.
The Armorican Celtic style in northwestern Gaul also developed from Celtic designs from the Rhine valley, themselves derived from earlier Greek prototypes such as the wine scroll and split palmette.
44.
"Armorican " ( Brittany ) and Northern French neolithic culture is based on traditions of the Linear Pottery culture or " Limburg pottery " in association with the La Hoguette culture.
45.
The region is generally hilly because it corresponds to the western end of the Armorican massif, a very old range that also extends in Normandy and the Pays de la Loire region.
46.
The Armorican Massif does not stop at the border with Brittany, the neighbouring region, but extends to the d�partment of Manche, south-west of Calvados and west of Orne.
47.
The southern Armorican Massif shows a rather similar spatial organisation in the eastern Vend�e; here dextral shear zones in dekakilometric spacing and the intervening far less deformed synclinoria follow the same trend.
48.
The massif is cut in three by two major late Hercynian southeast-northwest striking shear zones ( the " North " and " South Armorican Shear Zones " ).
49.
To the south it is bounded by the Vindelician Ridge ( " Vindelizische Schwelle " ) and, to the west and northwest, by the Armorican and London-Brabant Massifs.
50.
The pre-medieval region of Cornouaille ( Br . " Kernev " ) in the Brittany region of the Armorican peninsula is assumed to owe its name to descendants originating in insular Cornwall.
