Frederick, Duke of Lower Lorraine count of Malmedy from 1035 and Duke of Lower Lorraine from 1046 (1003–1065) Parents Irmentrude van de Wetterau Frederick of Luxembourg Children Judith von Luxemburg Siblings Henry VII, Duke of Bavaria Giselbert of Luxembourg Imiza of Luxembourg Hermann of Gleiberg Adalbero III of Luxembourg Ogive of Luxembourg Gisela von Luxemburg Partners Gerberga of Boulogne Ida of Saxony