Agnes of Poitou was a notable medieval queen, born around 1025. She was the daughter of William V of Aquitaine and became the wife of Henry III of Germany, serving as Empress of the Holy Roman Empire. Agnes played a significant role in the political landscape of her time, particularly in the governance of her husband's realm. As a queen, Agnes was known for her piety and support of the church. She was involved in various charitable activities and helped promote the interests of the Cluniac reform movement. Agnes passed away in 1077, leaving a legacy as a powerful and influential figure in European history.