"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. ...
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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." - (en.wikipedia.org 31.01.2020)