Princess Sophia Dorothea of Prussia was the ninth child and fifth daughter of Frederick William I of Prussia and Sophia Dorothea of Hanover. By marriage, she was a Margravine of Brandenburg-Schwedt. Wikipedia
Born: January 25, 1719, Berlin, Germany
Died: November 13, 1765 (age 46 years), Schwedt, Germany
Grandchildren: Maria Feodorovna, Princess Louise of Prussia, Duke Louis of Württemberg, and more
Parents: Sophia Dorothea of Hanover and Friedrich Wilhelm I of Prussia
Spouse: Frederick William, Margrave of Brandenburg-Schwedt (m. 1734–1765)
Siblings: Frederick the Great