John Sigismund was a Prince-elector of the Margraviate of Brandenburg from the House of Hohenzollern. He became the Duke of Prussia through his marriage to Duchess Anna, the eldest daughter of Duke Albert Frederick of Prussia who died without... Wikipedia
Born: November 8, 1572, Halle (Saale), Germany
Died: December 23, 1619 (age 47 years), Berlin, Germany
Spouse: Duchess Anna of Prussia (m. 1594–1619)