Constance of Brittany was a notable historical figure born around 1161. She was the daughter of Duke Conan IV of Brittany and became the Duchess of Brittany in her own right after her father's death. Constance played a crucial role in the political landscape of medieval France, particularly through her marriages and alliances. Her first marriage to Geoffrey Plantagenet, the son of King Henry II of England, strengthened ties between Brittany and England. After Geoffrey's death, she married Bretagne's Duke Peter, further solidifying her influence. Constance's legacy includes her efforts to maintain Brittany's autonomy during a time of shifting power dynamics in France.