Gerberga of Burgundy - 1020/1023 Parents Otto-William, Count of Burgundy Ermentrude of Roucy Children Fulk Bertrand of Provence Geoffrey I of Provence William IV Siblings Guy I of Mâcon Matilda of Burgundy Reginald I, Count of Burgundy Agnes of Burgundy, Duchess of Aquitaine Béatrice de Mâcon Partners William II of Provence