Princess Wilhelmine, Duchess of Sagan
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Katharina Friederike Wilhelmine Benigna, Princess of Courland, Duchess of Sagan; died 29 November 1839 in Vienna, Austrian Empire was a German noble from the ruling family of Courland and Semigallia and a Duchess of Sagan. Wikipedia
Born: February 8, 1781, Jelgava, Latvia
Died: November 29, 1839 (age 58 years), Vienna, Austria
Parents: Peter von Biron and Dorothea von Medem
Spouse: Prince Louis de Rohan-Guémenée (m. 1800)
Great-grandparents: Catharina Hedwig von Raab gen. Thülen, Georg Christoph von Medem, Anna Elisabeth von Wildemann, and more
Great grandchildren: Carl August Reinhold Lars Armfelt and Carl Eugen Armfelt
Children: Gustava Armfelt and Wilhelmina Armfelt