Background
He was the son of Ludwig V and Magdalene of Brandenburg.
He was the son of Ludwig V and Magdalene of Brandenburg.
From 1645 to 1648 he led the so-called Hessenkrieg against the Landgravine Amalie Elizabeth of Hesse-Kassel over the inheritance of the extinct line of Hesse-Marburg. This conflict resulted in the loss of Hesse-Marburg to Hesse-Kassel.