Margaret of Brittany was born in 1344 and was the daughter of John IV, Duke of Brittany and Joan of France. She became a significant figure in the political landscape of medieval France, particularly during the Hundred Years' War. In 1361, Margaret married Charles II of Navarre, which strengthened alliances between Brittany and Navarre. Her marriage was politically motivated, aiming to secure peace and stability in the region. Margaret's life was marked by her efforts to navigate the complexities of noble politics during a tumultuous period in European history.