Margaret III, Countess of Flanders was a noblewoman born in 1344, known for her influential role in the medieval European aristocracy. She was the daughter of Louis II, Count of Flanders and Margaret of France. Margaret married Philip the Bold, Duke of Burgundy, which strengthened the ties between Flanders and the powerful Burgundian state. As Countess, Margaret played a significant role in the governance of Flanders, especially during her husband's absence. Her marriage helped to consolidate power and wealth, leading to the rise of the Burgundian Netherlands. Margaret III passed away in 1405, leaving a lasting legacy in the region's history.