5/27/1791 Berlin) & Nathan Potsdam ( - bef 1781) "ch. Jettche (12/6/1736 - 12/18/1811 Berlin) & Itzag Aron Cohn (abt 1725 m. 1/6/1761 - 4/24/1761 Potsdam , Germany)" Mother : Lea Wallich Grandfather : Elie (Elias) Wulff- Dessau (from Dessau , Germany - 3/17/1754 Dessau) hoffactors Grandmother : Zippora (see Gans