When Princess Hedwig Sophie of Brandenburg Hohenzollern Landgravine of Hesse-Kassel was born on 14 July 1623, in Berlin, Brandenburg, Prussia, her father, Kurfürst Georg Wilhelm von Brandenburg, was 27 and her mother, Countess Elizabeth Charlotte von Wittelsbach, was 25. She married ‘William the Just’ William VI, Landgrave of Hesse-Kassel on 2 July 1649, in Cöln, Berlin, Brandenburg, Germany. They were the parents of at least 5 sons and 3 daughters. She died on 26 June 1683, in Schmalkalden, Sachsen-Coburg-Gotha, Thüringen, Germany, at the age of 59, and was buried in Kassel, Gelnhausen, Hesse-Nassau, Prussia, Germany.