High Quality Content by WIKIPEDIA articles! Princess Adelheid Amalie Gallitzin (also known as Amaliia Samuilovna Golitsyna or in Russian as Амалия Самуиловна Голицына; 28 August 1748 – 17 April 1806) was the daughter of the Prussian Field Marshal Samuel von Schmettau and the mother of Prince Demetrius Augustine Gallitzin.