British troops were hired to support the usurpation of Magnus Maximus, who is said to have settled them in Armorica. Settlements expanded when invading Anglo-Saxons expanded westward within Britain. Strong links existed in the 6th century between the British and Armorican territories. Legends about King Arthur and the Matter of Britain make frequent reference to the maritime connections between the peoples of Wales, southern Ireland, Cornwall in southwestern Britain and the early kingdoms of Brittany, cf. the tale of Tristan and Iseult. The existence of an ancient district in Anjou called "la Cornuaille" has led to the hypothesis that Cornouaille may have been a geographical or military label for all of southern Brittany as far as the northern shore of Domnonée in the 6th or 7th century. At the origin of this feudal county, the reigning dynasty acceded to a dukedom of the region, which then passed to the Ancient Lord-Bishop of Quimper. Diocese The name Cornouaille signifies the diocese of Quimper which persisted until the French Revolution. The diocese covered more than half of the south of Finistère, and extended over part of Morbihan and the Côtes-d'Armor. There were two archdeacons, one for Cornouaille and one for Poher. There were also a cantor, a treasurer, a theologian and twelve canons. This episcopal division was the poorest in Brittany. After the French Revolution, the new constitution created a diocese of Finistère, erasing that of the diocese of Kerne (Cournouaille); most of the old diocese was absorbed into the new. Traditional districts List of rulers Gradlon (semi-legendary) Rivelen Mor Marthou (c. 430) Congar (c. 450) Daniel Drem Rud (c. 500) Melar (c. 500s) Budic II (c. 545) Macliau (544–577) Judicael (circa 857–874) – the county of Cornouaille is not yet precisely defined. Its leaders represent the interests of "western Brittany" and join the King of Brittany in fights against the Vikings. Riwallon (circa 874) Gourmaëlon (early 10th century) Alan II (early to mid-10th century) Alain Canhiart Hoel of Cornouaille, who ruled Brittany as Duke jure uxoris. Alan IV Notes Medieval Brittany Geography of Brittany Geography of Finistère Barbarian kingdoms Geographical, historical and cultural regions of France Former principalities