Agnes of Brunswick-Grubenhagen abbess of Gandersheim Abbey (1406–1439) Parents Elisabeth of Brunswick-Göttingen Eric I, Duke of Brunswick-Grubenhagen Children Siblings Margaret of Brunswick-Grubenhagen Henry III, Duke of Brunswick-Grubenhagen Ernest II, Duke of Brunswick-Grubenhagen Elisabeth of Brunswick-Grubenhagen Anna of Brunswick-Grubenhagen-Einbeck Albert II, Duke of Brunswick-Grubenhagen Sophie von Braunschweig-Grubenhagen