Frederick I, Duke of Upper Lorraine Frankish nobleman (d. 0978) Parents Cunigunda of France Wigeric of Lotharingia Children Adalbero II of Ardenne Theodoric I Ita von Lothringen Siblings Liutgarde of Bidgau Adabero I of Ardenne Giselbert Gozlin, Count of Bidgau Siegfried of Luxembourg Sigebert Mathilde von Lothringen Partners Beatrice of France