Margarethe von Braunschweig-Wolfenbüttel Peerage person ID=7704 (1451–1509) Parents Helen of Cleves Henry the Peaceful, Duke of Brunswick-Lüneburg Children Margarethe, Gräfin von Henneberg-Schleusingen William IV, Count of Henneberg-Schleusingen Partners William III, Princely Count of Henneberg-Schleusingen