Frederick William, Prince von Hessenstein, was a Swedish soldier and statesman. He was an extramarital son of King Frederick I of Sweden and his royal mistress Hedvig Taube. Wikipedia
Born: November 26, 1735, Stockholm, Sweden
Died: July 27, 1808 (age 72 years), Panker, Germany
Grandparents: Charles I, Landgrave of Hesse-Kassel, Maria Amalia of Courland, and Christina Maria Falkenberg
Parents: Frederick I of Sweden and Hedvig Taube
Great-grandparents: Jacob Kettler, Princess Louise Charlotte of Brandenburg, Hedwig Sophie of Brandenburg, and more