Joachim Frederick, of the House of Hohenzollern, was Prince-elector of the Margraviate of Brandenburg from 1598 until his death. Wikipedia
Born: January 27, 1546, Cölln, Germany
Died: July 18, 1608 (age 62 years), Köpenick, Berlin, Germany
Grandchildren: George William, Elector of Brandenburg, Catherine of Brandenburg, Maria Eleonora of Brandenburg, and more
Grandparents: Joachim II Hector, Magdalena of Saxony, Frederick II of Legnica, and more
Parents: John George, Elector of Brandenburg and Sophie of Legnica
Spouse: Eleanor of Prussia (m. 1603–1607) and Catherine of Brandenburg-Küstrin (m. 1570–1602)