proper noun/kɔʁ.nwaj/
Cornouaille is feminine in French.
Cornouaille (a historical region of Brittany, France, settled by princes from Cornwall)
Inherited from Middle French Cornuaille, from Old French Cornuaille, from Early Medieval Latin Cornugallēnsis, of Celtic/Brythonic origin, corresponding to Proto-Brythonic *Körnɨw + the Germanic wealas (“Romans, Celts”) (see wealh). More at Cornouaille.