Ermengarde of Burgundy was a noblewoman born around 1125, known for her role in the medieval European aristocracy. She was the daughter of Hugh II of Burgundy and Mathilde of Mayenne. Ermengarde married Fulk IV of Anjou, which strengthened the ties between the two powerful families. Ermengarde became the Countess of Anjou through her marriage and was the mother of several notable children, including Geoffrey Plantagenet, who would later become the father of King Richard I of England. Her lineage played a significant role in the political landscape of the time, influencing the future of the English monarchy.