Friederike Henriette Erbkam Daughter of Theologian Friedrich Samuel Gottfried Sack (1781–1852) Parents Johanna Wilhelmine Sack Friedrich Samuel Gottfried Sack Children Wilhelm Heinrich Erbkam Georg Erbkam Siblings Charlotte Wilhelmine Louise von Hüser Wilhelm Friedrich Sack Amalie Eichhorn Karl Heinrich Sack Friedrich Ferdinand Adolph Sack Partners Johann Wichardt Erbkam