Old French province in the Loire valley, an English possession from 1154 to 1204 (5)
I believe the answer is:
anjou
(Other definitions for anjou that I've seen before include "Whence Angevins came" , "featured in American journal" , "Old province of the Loire valley, an English possession 1154-1204" , "Ancient region of France, capital Angers" , "Province formerly" .)