Landgraves of Hesse-Kassel

William V (German: Wilhelm) (13 February 1602 – 21 September 1637), a member of the House of Hesse, was Landgrave of Hesse-Kassel from 1627 to 1637. Having come to rule in unfavorable circumstances and in the midst of the Thirty Years' War, he continued to suffer losses of territory and wealth.