Astronomer, landgrave of hesse-kassel
William IV, Landgrave of Hesse-Kassel , was born on June 24, 1532, in Kassel and died on August 25, 1592, also in Kassel . He was the son of Philip I, Landgrave of Hesse , and Christine of Saxony . William IV is known as the first Landgrave of the Landgraviate of Hesse-Kassel and is also referred to as William the Wise .
He was an astronomer , politician , and Landgrave with German nationality and citizenship . As a father, he had several children, including Anna Maria of Hesse-Kassel , Maurice, Landgrave of Hesse-Kassel , Hedwig of Hesse-Kassel , and Christine of Hesse-Kassel (1578–1658) .