Rabenau and v. Richthoven. Kaiser Wilhelm I was presented with the "Silberne Buch“ of the Sack Family on his 90th birthday in remembrance of the "Höchstdero Taufe und Confirmation" by the court preacher and first Prussian bishop Friedrich Samuel Gottfried Sack. The foundation which Simon Heinrich Sack established still exists today and has over 17,000 listed members in it so-called 'Silver Book'. Many records and works of art relating to Simon Heinrich Sack and his descendants are to be found with the Prussian Museum in Wesel and Minden, Germany, including the famous painting of Luise von Mecklenburg-Strelitz (1776-1810), wife of Friedrich Wilhelm III. See also Privy Councillor Simon Heinrich Sack Family Foundation References External links www.sackstiftung.de www.sacks.cc http://www.preussenmuseum.de/index.php http://www.rambow.de/familienstiftung-sack.html 1723 births 1791 deaths Prussian politicians European University Viadrina alumni