Gisela of Lotharingia 10th and early 11th-century Carolingian princess (0860–0907) Parents Lothair II of Lotharingia Waldrada of Lotharingia Children Siegfried I of Guînes Siblings Ermengarde of Lotharingia Hugh, Duke of Alsace Bertha of Lotharingia Partners Godfrid, Duke of Frisia