William VI, Landgrave of Hesse-Kassel
Wilhelm VI, Landgrave of Hesse-Kassel (23 May 1629 – 16 July 1663), known as William the Just, was Landgrave of Hesse-Kassel from 1637 to 1663. Life Born in Kassel, he was the son of William V (whom he succeeded) and his wife Amalie Elisabeth, Gräfin of Hanau-Münzenberg (daughter of Philip Louis II of Hanau-Münzenberg and his wife Countess Catharina Belgica of Nassau). His mother remained his guardian until he came of age. Despite Hesse-Kassel's defeat in the Thirty Years' War, William's mother did not wish to acknowledge the accord of 1627. This required that the unmarried Marburger heir and the Landgraves of Hessen-Darmstadt should fall, but Amalie Elisabeth had other ideas and led Hesse-Kessel in 1645 into the "Hessenkrieg", ruling as Landgräfin on her son's behalf. This war began when Hesse-Kassel's troops began to besiege the city of Marburg. Three years later, in 1648, the war ended with a victory for Kassel, although the citizens of Darmstadt also gained from it. Domination over the Marburger territories went over to the landgrave of Hesse-Kassel after the accord was dissolved and a new agreement was reached. William VI succeeded in what his ancestors had tried to do in vain since 1604, that