Duchess Bertha of Brittany was a noblewoman born around 1000 AD. She was the daughter of Duke Conan I of Brittany and Ermengarde of Anjou. Bertha played a significant role in the political landscape of her time, particularly through her marriage to Count Alan III of Brittany, which strengthened alliances between noble families. Bertha is also known for her contributions to the cultural and religious life in Brittany. She was a patron of the church and supported the establishment of monasteries, which helped promote education and Christianity in the region. Her legacy is remembered as part of the rich history of Brittany.