Joan of Flanders was a noblewoman born around 1320 in Flanders, a region that is now part of modern-day Belgium. She was the daughter of Robert III of Flanders and became known for her strong personality and political influence during a time of conflict in the region. Joan played a significant role in the Flemish Wars and was involved in various alliances and disputes. In 1347, Joan married William II of Namur, which further strengthened her political position. She was known for her efforts to defend her family's interests and her involvement in the governance of Flanders. Joan's legacy is remembered for her contributions to the political landscape of her time.