States and territories disestablished in the 1030s

Domnonée is the modern French form of Domnonia or Dumnonia (Latin for "Devon"; ), a historic kingdom in northern Armorica (modern Brittany). It was founded by British immigrants from Dumnonia in Sub-Roman Britain who fled the Saxon invasions of Britain in the early Middle Ages. Headed by the same ruling dynasty, Domnonée was at times separate from, and at other times united with, its British motherland, and the Latin name Domnonia was applied to both regions interchangeably. On the continent, Domnonée encompassed the areas of Trégor, Dol-de-Bretagne, Goélo, and Penthièvre.