 She was the daughter of the Ramnulfid duke William V of Aquitaine (d. 1030) and Agnes of Burgundy.She thereby was the sister of Duke William VI of Aquitaine, Duke Odo of Gascony, Duke William VII, and Duke William VIII of Aquitaine.Her maternal grandparents were Count Otto-William of Burgundy and Ermentrude of Rheims, daughter of Renaud of Roucy.